diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..aa724b7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/.name b/.idea/.name
new file mode 100644
index 0000000..bd8501b
--- /dev/null
+++ b/.idea/.name
@@ -0,0 +1 @@
+Razorpay Demo
\ No newline at end of file
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..fb7f4a8
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
new file mode 100644
index 0000000..66b5f52
--- /dev/null
+++ b/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+            <option value="$PROJECT_DIR$/library" />
+          </set>
+        </option>
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..2d653d6
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DesignSurface">
+    <option name="filePathToZoomLevelMap">
+      <map>
+        <entry key="app/src/main/res/layout/activity_main.xml" value="0.328125" />
+        <entry key="app/src/main/res/layout/activity_welcome.xml" value="0.3151041666666667" />
+        <entry key="library/src/main/res/drawable/bg_corner_white_10.xml" value="0.294" />
+        <entry key="library/src/main/res/drawable/bg_select_btn.xml" value="0.294" />
+        <entry key="library/src/main/res/drawable/bg_select_btn_ok.xml" value="0.294" />
+        <entry key="library/src/main/res/layout/activity_payment.xml" value="0.34322916666666664" />
+        <entry key="library/src/main/res/layout/dlg_alert.xml" value="0.3140625" />
+      </map>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="Android Studio default JDK" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/.gitignore b/app/.gitignore
new file mode 100644
index 0000000..42afabf
--- /dev/null
+++ b/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
new file mode 100644
index 0000000..00df5b3
--- /dev/null
+++ b/app/build.gradle
@@ -0,0 +1,62 @@
+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+    id 'kotlin-kapt'
+}
+
+android {
+    compileSdk 32
+
+    defaultConfig {
+        applicationId "com.example.razorpaydemo"
+        minSdk 21
+        targetSdk 31
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = '11'
+    }
+    buildFeatures {
+        viewBinding true
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'androidx.core:core-ktx:1.8.0'
+    implementation 'androidx.appcompat:appcompat:1.5.0'
+    implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation project(':library')
+    implementation('com.google.code.gson:gson:2.8.9') {
+        exclude module: 'com.google.code.gson'
+    }
+
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+
+    //retrofit
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation 'com.squareup.okhttp3:logging-interceptor:4.9.0'
+    implementation 'com.razorpay:checkout:1.6.20'
+    implementation 'com.github.oktavianto:ionalert:1.0.4'
+
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+
+}
\ No newline at end of file
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
new file mode 100644
index 0000000..481bb43
--- /dev/null
+++ b/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/app/src/androidTest/java/com/example/razorpaydemo/ExampleInstrumentedTest.kt b/app/src/androidTest/java/com/example/razorpaydemo/ExampleInstrumentedTest.kt
new file mode 100644
index 0000000..8f3fe8d
--- /dev/null
+++ b/app/src/androidTest/java/com/example/razorpaydemo/ExampleInstrumentedTest.kt
@@ -0,0 +1,24 @@
+package com.example.razorpaydemo
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.example.razorpaydemo", appContext.packageName)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..ea345df
--- /dev/null
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.example.razorpaydemo">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:name=".MyApplication"
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.RazorpayDemo"
+        android:usesCleartextTraffic="true"
+        tools:targetApi="31">
+
+        <activity
+            android:name=".MainActivity"
+            android:screenOrientation="portrait"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/app/src/main/java/com/example/razorpaydemo/MainActivity.kt b/app/src/main/java/com/example/razorpaydemo/MainActivity.kt
new file mode 100644
index 0000000..83ef2aa
--- /dev/null
+++ b/app/src/main/java/com/example/razorpaydemo/MainActivity.kt
@@ -0,0 +1,221 @@
+package com.example.razorpaydemo
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.text.TextUtils
+import android.util.Log
+import android.widget.Button
+import android.widget.EditText
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import com.example.razorpaydemo.models.ModelCreateOrder
+import com.example.razorpaydemo.models.ModelPaymentError
+import com.example.razorpaydemo.retrofit.RetrofitClient
+import com.example.razorpaydemo.utils.AppConstants
+import com.example.razorpaydemo.utils.NetworkUtils
+import com.google.gson.JsonObject
+import com.razorpay.PaymentData
+import com.razorpay.library.OpenPaymentController
+import id.ionbit.ionalert.IonAlert
+import okhttp3.Credentials
+import org.json.JSONObject
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+
+
+class MainActivity : AppCompatActivity(), OpenPaymentController.PaymentCallBack {
+    private lateinit var context: Context
+    private var invoiceID: String? = null
+    private var amount: String? = null
+    private var currency: String? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        initViews()
+    }
+
+    private fun initViews() {
+        context = this
+
+        findViewById<Button>(R.id.btnPay).setOnClickListener {
+            if (isValidate()) {
+                if (NetworkUtils.isNetworkAvailable()) {
+                    callApiRazorpayOrderId(
+                        AppConstants.BASE_URL,
+                        findViewById<EditText>(R.id.editTextInvoiceId).text.toString(),
+                        findViewById<EditText>(R.id.editTextAmount).text.toString(),
+                        "INR"
+                    )
+                } else {
+                    IonAlert(context, IonAlert.WARNING_TYPE)
+                        .setContentText("Oops! No internet connection found. Please try again!")
+                        .setConfirmText("OK")
+                        .setConfirmClickListener { sDialog -> sDialog.dismissWithAnimation() }
+                        .show()
+                }
+            }
+        }
+    }
+
+    private fun isValidate(): Boolean {
+        invoiceID = findViewById<EditText>(R.id.editTextInvoiceId).text.toString()
+        amount = findViewById<EditText>(R.id.editTextAmount).text.toString()
+        currency = "INR"
+        if (TextUtils.isEmpty(amount)) {
+            IonAlert(this, IonAlert.WARNING_TYPE)
+                .setContentText("Amount can't be blank!")
+                .setConfirmText("OK")
+                .setConfirmClickListener { sDialog -> sDialog.dismissWithAnimation() }
+                .show()
+            return false
+        } else if (TextUtils.isEmpty(invoiceID)) {
+            IonAlert(this, IonAlert.WARNING_TYPE)
+                .setContentText("Invoice ID can't be blank!")
+                .setConfirmText("OK")
+                .setConfirmClickListener { sDialog -> sDialog.dismissWithAnimation() }
+                .show()
+            return false
+        } else if (TextUtils.isEmpty(currency)) {
+            IonAlert(this, IonAlert.WARNING_TYPE)
+                .setContentText("Currency can't be blank!")
+                .setConfirmText("OK")
+                .setConfirmClickListener { sDialog -> sDialog.dismissWithAnimation() }
+                .show()
+            return false
+        }
+        return true
+    }
+
+    private fun callApiRazorpayOrderId(
+        url: String?,
+        invoiceId: String?,
+        amount: String?,
+        currency: String?
+    ) {
+        val credentials =
+            Credentials.basic(AppConstants.RAZORPAY_TEST_KEY, AppConstants.RAZORPAY_TEST_SECRET)
+        val amountDouble = amount!!.toDouble()
+        val amountINR = amountDouble * 100
+        val finalAmount = amountINR.toLong()
+        val obj = JsonObject()
+        obj.addProperty("amount", finalAmount)
+        obj.addProperty("currency", currency)
+        obj.addProperty("receipt", invoiceId)
+        RetrofitClient.create()
+            .getRazorPayOrderId(credentials!!, url!!, obj)
+            .enqueue(object : Callback<Any> {
+                override fun onResponse(call: Call<Any>, response: Response<Any>) {
+                    try {
+                        if (response.isSuccessful) {
+                            if (response.body() != null) {
+
+                                val model = response.body()
+                                val finalResponse: String =
+                                    MyApplication.getInstance().gson.toJson(model)
+                                val razorpayOrderResponse =
+                                    MyApplication.getInstance().gson.fromJson(
+                                        finalResponse,
+                                        ModelCreateOrder::class.java
+                                    )
+                                razorpayOrderResponse?.let {
+                                    val razorpayOrderId = it.id
+                                    val amountPaid = it.amount
+                                    val currencyINR = it.currency
+                                    val receipt = it.receipt
+                                    callPaymentController(
+                                        razorpayOrderId,
+                                        receipt,
+                                        amountPaid,
+                                        currencyINR
+                                    )
+
+                                }
+                            }
+                        } else if (response.code() == 500) {
+                            IonAlert(context, IonAlert.ERROR_TYPE)
+                                .setContentText("Oops! Server Error found please wait and try again")
+                                .setConfirmText("OK")
+                                .setConfirmClickListener { sDialog -> sDialog.dismissWithAnimation() }
+                                .show()
+                        } else if (response.errorBody() != null) {
+                            try {
+                                val jsonObject = JSONObject(response.errorBody()!!.string())
+                                val jsonObjPrice = jsonObject.getJSONObject("error")
+                                val desc = jsonObjPrice.getString("description")
+                                val code = jsonObjPrice.getString("code")
+
+                                IonAlert(context, IonAlert.ERROR_TYPE)
+                                    .setContentText("$code:$desc")
+                                    .setConfirmText("OK")
+                                    .setConfirmClickListener { sDialog -> sDialog.dismissWithAnimation() }
+                                    .show()
+
+                            } catch (e: java.lang.Exception) {
+                                e.printStackTrace()
+                            }
+                        }
+                    } catch (ex: Exception) {
+                        ex.printStackTrace()
+                    }
+                }
+
+                override fun onFailure(call: Call<Any>, t: Throwable) {
+                    Toast.makeText(context, t.message, Toast.LENGTH_LONG).show()
+                }
+            })
+    }
+
+    private fun callPaymentController(
+        razorpayOrderId: String?,
+        receipt: String?,
+        amountPaid: Long?,
+        currencyINR: String?
+    ) {
+        val intent = Intent()
+        intent.putExtra("order_id", razorpayOrderId)
+        intent.putExtra("receipt", receipt)
+        intent.putExtra("currency", currencyINR)
+        intent.putExtra("name", "Merchant Name")
+        intent.putExtra("description", "Product short description")
+        intent.putExtra("amount", amountPaid)
+        intent.putExtra("email", "")
+        intent.putExtra("mobile", "")
+        intent.putExtra("address", "")
+        intent.putExtra("api_key", AppConstants.RAZORPAY_TEST_KEY)
+        intent.putExtra("key_secret", AppConstants.RAZORPAY_TEST_SECRET)
+
+        OpenPaymentController(this, intent, context)
+    }
+
+    override fun success(s: String?, paymentData: PaymentData?, isSignatureVerified: Boolean) {
+        if (isSignatureVerified) {
+            IonAlert(context, IonAlert.SUCCESS_TYPE)
+                .setContentText("Signature verified and payment has been done.\nPayment ID => ${paymentData?.paymentId}\nOrder ID => ${paymentData?.orderId}")
+                .setConfirmText("OK")
+                .setConfirmClickListener { sDialog ->
+                    sDialog.dismissWithAnimation()
+                }
+                .show()
+        } else
+            Toast.makeText(
+                this,
+                "Signature not verified and payment is under process.",
+                Toast.LENGTH_LONG
+            ).show()
+        Log.d("=>$s", "=>$paymentData")
+    }
+
+    override fun failed(p0: Int, s: String?, p2: PaymentData?) {
+        val paymentError = MyApplication.getInstance().gson?.fromJson(s, ModelPaymentError::class.java)
+
+        IonAlert(context, IonAlert.ERROR_TYPE)
+            .setContentText("${paymentError?.let { it.error.description }}")
+            .setConfirmText("OK")
+            .setConfirmClickListener { sDialog -> sDialog.dismissWithAnimation() }
+            .show()
+        Log.d("=>$s", "=>$p2")
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/razorpaydemo/MyApplication.java b/app/src/main/java/com/example/razorpaydemo/MyApplication.java
new file mode 100644
index 0000000..1e6262d
--- /dev/null
+++ b/app/src/main/java/com/example/razorpaydemo/MyApplication.java
@@ -0,0 +1,25 @@
+package com.example.razorpaydemo;
+
+import android.app.Application;
+
+import com.google.gson.Gson;
+
+public class MyApplication extends Application {
+    private Gson gson;
+    private static MyApplication applicationInstance;
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        applicationInstance = this;
+        gson = new Gson();
+    }
+
+    public Gson getGson() {
+        return gson;
+    }
+
+    public static MyApplication getInstance() {
+        return applicationInstance;
+    }
+}
diff --git a/app/src/main/java/com/example/razorpaydemo/models/ModelCreateOrder.kt b/app/src/main/java/com/example/razorpaydemo/models/ModelCreateOrder.kt
new file mode 100644
index 0000000..f2f61b3
--- /dev/null
+++ b/app/src/main/java/com/example/razorpaydemo/models/ModelCreateOrder.kt
@@ -0,0 +1,16 @@
+package com.example.razorpaydemo.models
+
+data class ModelCreateOrder(
+    val amount: Long,
+    val amount_due: Long,
+    val amount_paid: Long,
+    val attempts: Int,
+    val created_at: Int,
+    val currency: String,
+    val entity: String,
+    val id: String,
+    //val notes: List<Any>,
+    val offer_id: Any,
+    val receipt: String,
+    val status: String
+)
\ No newline at end of file
diff --git a/app/src/main/java/com/example/razorpaydemo/models/ModelPaymentError.kt b/app/src/main/java/com/example/razorpaydemo/models/ModelPaymentError.kt
new file mode 100644
index 0000000..d4a81cd
--- /dev/null
+++ b/app/src/main/java/com/example/razorpaydemo/models/ModelPaymentError.kt
@@ -0,0 +1,13 @@
+package com.example.razorpaydemo.models
+
+data class ModelPaymentError(
+    val error: Error
+) {
+    data class Error(
+        val code: String, // BAD_REQUEST_ERROR
+        val description: String, // Payment processing cancelled by user
+        val reason: String, // payment_cancelled
+        val source: String, // customer
+        val step: String // payment_authentication
+    )
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/razorpaydemo/retrofit/ApiCall.kt b/app/src/main/java/com/example/razorpaydemo/retrofit/ApiCall.kt
new file mode 100644
index 0000000..ca410b9
--- /dev/null
+++ b/app/src/main/java/com/example/razorpaydemo/retrofit/ApiCall.kt
@@ -0,0 +1,16 @@
+package com.example.razorpaydemo.retrofit
+
+import com.google.gson.JsonObject
+import org.json.JSONObject
+import retrofit2.Call
+import retrofit2.http.*
+
+interface ApiCall {
+    @Headers("Content-Type: application/json")
+    @POST()
+    fun getRazorPayOrderId(
+        @Header("Authorization") credentials: String,
+        @Url url: String,
+        @Body jsonObject: JsonObject
+    ): Call<Any>
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/razorpaydemo/retrofit/RetrofitClient.kt b/app/src/main/java/com/example/razorpaydemo/retrofit/RetrofitClient.kt
new file mode 100644
index 0000000..bed70fd
--- /dev/null
+++ b/app/src/main/java/com/example/razorpaydemo/retrofit/RetrofitClient.kt
@@ -0,0 +1,64 @@
+package com.example.razorpaydemo.retrofit
+
+import com.example.razorpaydemo.utils.AppConstants.BASE_URL
+import com.google.gson.GsonBuilder
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+import java.security.KeyManagementException
+import java.security.NoSuchAlgorithmException
+import java.util.concurrent.TimeUnit
+
+object RetrofitClient {
+
+    private var mClient: OkHttpClient? = null
+    private var mGsonConverter: GsonConverterFactory? = null
+
+    /**
+     * Don't forget to remove Interceptors (or change Logging Level to NONE)
+     * in production! Otherwise people will be able to see your request and response on Log Cat.
+     */
+    private val client: OkHttpClient
+        @Throws(NoSuchAlgorithmException::class, KeyManagementException::class)
+        get() {
+            if (mClient == null) {
+                val interceptor = HttpLoggingInterceptor()
+                interceptor.level = HttpLoggingInterceptor.Level.BODY
+
+                val httpBuilder = OkHttpClient.Builder()
+                httpBuilder
+                    .connectTimeout(15, TimeUnit.SECONDS)
+                    .readTimeout(20, TimeUnit.SECONDS)
+                    .addInterceptor(interceptor)  /// show all JSON in logCat
+                mClient = httpBuilder.build()
+
+            }
+            return mClient!!
+        }
+
+
+    private val gsonConverter: GsonConverterFactory
+        get() {
+            if (mGsonConverter == null) {
+                mGsonConverter = GsonConverterFactory
+                    .create(
+                        GsonBuilder()
+                            .setLenient()
+                            .disableHtmlEscaping()
+                            .create())
+            }
+            return mGsonConverter!!
+        }
+
+    fun create(): ApiCall {
+        val retrofit = Retrofit.Builder()
+            .baseUrl(BASE_URL)
+            .addConverterFactory(gsonConverter)
+            .client(client)
+            .build()
+
+        return retrofit.create(ApiCall::class.java)
+    }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/razorpaydemo/utils/AppConstants.kt b/app/src/main/java/com/example/razorpaydemo/utils/AppConstants.kt
new file mode 100644
index 0000000..8e6b072
--- /dev/null
+++ b/app/src/main/java/com/example/razorpaydemo/utils/AppConstants.kt
@@ -0,0 +1,9 @@
+package com.example.razorpaydemo.utils
+
+object AppConstants {
+    const val BASE_URL = "https://api.razorpay.com/v1/orders/"
+
+    // razorpay test key (project)
+    const val RAZORPAY_TEST_KEY = "RAZORPAY_TEST_KEY" //getting from razorpay account
+    const val RAZORPAY_TEST_SECRET = "RAZORPAY_TEST_SECRET" // getting from razorpay account
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/razorpaydemo/utils/NetworkUtils.java b/app/src/main/java/com/example/razorpaydemo/utils/NetworkUtils.java
new file mode 100644
index 0000000..adc2304
--- /dev/null
+++ b/app/src/main/java/com/example/razorpaydemo/utils/NetworkUtils.java
@@ -0,0 +1,37 @@
+package com.example.razorpaydemo.utils;
+
+import android.content.Context;
+import android.location.LocationManager;
+import android.net.ConnectivityManager;
+
+import com.example.razorpaydemo.MyApplication;
+
+import java.math.RoundingMode;
+import java.text.DecimalFormat;
+
+
+public class NetworkUtils {
+
+    public static boolean isNetworkAvailable() {
+        try {
+            ConnectivityManager connectivityManager = (ConnectivityManager) MyApplication.getInstance().getSystemService(Context.CONNECTIVITY_SERVICE);
+            return connectivityManager != null && connectivityManager.getActiveNetworkInfo() != null &&
+                    connectivityManager.getActiveNetworkInfo().isConnected();
+        } catch (Exception e) {
+            return true;
+        }
+    }
+
+    public static boolean isGPSEnabled(Context mContext) {
+        LocationManager locationManager = (LocationManager)
+                mContext.getSystemService(Context.LOCATION_SERVICE);
+        return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
+    }
+
+    public static double roundLocationPoint(double point){
+        DecimalFormat df = new DecimalFormat("#.####");
+        df.setRoundingMode(RoundingMode.HALF_UP);
+        return Double.valueOf(df.format(point).replace(",","."));
+    }
+
+}
diff --git a/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..2b068d1
--- /dev/null
+++ b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/ic_launcher_background.xml b/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..07d5da9
--- /dev/null
+++ b/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..285b44f
--- /dev/null
+++ b/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">-->
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <EditText
+        android:id="@+id/editTextCC"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp"
+        android:visibility="gone"
+        android:hint="country code"
+        android:text="+91"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <EditText
+        android:id="@+id/editTextAmount"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="30dp"
+        android:layout_marginTop="100dp"
+        android:layout_marginEnd="30dp"
+        android:hint="Enter Amount"
+        android:inputType="numberDecimal"
+        android:text=""
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/editTextCC"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <EditText
+        android:id="@+id/editTextInvoiceId"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="30dp"
+        android:layout_marginTop="50dp"
+        android:layout_marginEnd="30dp"
+        android:hint="Enter InvoiceID"
+        android:inputType="text"
+        android:text=""
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/editTextCC"
+        app:layout_constraintTop_toBottomOf="@+id/editTextAmount" />
+
+
+
+    <Button
+        android:id="@+id/btnPay"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="35dp"
+        android:layout_marginTop="32dp"
+        android:layout_marginEnd="35dp"
+        android:text="Pay With Razorpay"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/editTextInvoiceId" />
+
+</androidx.constraintlayout.widget.ConstraintLayout><!--</layout>-->
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..eca70cf
--- /dev/null
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..eca70cf
--- /dev/null
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher.webp b/app/src/main/res/mipmap-hdpi/ic_launcher.webp
new file mode 100644
index 0000000..c209e78
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/ic_launcher.webp differ
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp b/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..b2dfe3d
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher.webp b/app/src/main/res/mipmap-mdpi/ic_launcher.webp
new file mode 100644
index 0000000..4f0f1d6
Binary files /dev/null and b/app/src/main/res/mipmap-mdpi/ic_launcher.webp differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp b/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..62b611d
Binary files /dev/null and b/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher.webp b/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
new file mode 100644
index 0000000..948a307
Binary files /dev/null and b/app/src/main/res/mipmap-xhdpi/ic_launcher.webp differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..1b9a695
Binary files /dev/null and b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp b/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
new file mode 100644
index 0000000..28d4b77
Binary files /dev/null and b/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..9287f50
Binary files /dev/null and b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
new file mode 100644
index 0000000..aa7d642
Binary files /dev/null and b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..9126ae3
Binary files /dev/null and b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp differ
diff --git a/app/src/main/res/values-night/themes.xml b/app/src/main/res/values-night/themes.xml
new file mode 100644
index 0000000..ba0dbb1
--- /dev/null
+++ b/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.RazorpayDemo" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..f8c6127
--- /dev/null
+++ b/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..6306a30
--- /dev/null
+++ b/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Razorpay Demo</string>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
new file mode 100644
index 0000000..e7b481c
--- /dev/null
+++ b/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.RazorpayDemo" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/xml/backup_rules.xml b/app/src/main/res/xml/backup_rules.xml
new file mode 100644
index 0000000..fa0f996
--- /dev/null
+++ b/app/src/main/res/xml/backup_rules.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>
\ No newline at end of file
diff --git a/app/src/main/res/xml/data_extraction_rules.xml b/app/src/main/res/xml/data_extraction_rules.xml
new file mode 100644
index 0000000..9ee9997
--- /dev/null
+++ b/app/src/main/res/xml/data_extraction_rules.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>
\ No newline at end of file
diff --git a/app/src/test/java/com/example/razorpaydemo/ExampleUnitTest.kt b/app/src/test/java/com/example/razorpaydemo/ExampleUnitTest.kt
new file mode 100644
index 0000000..7c1f7ac
--- /dev/null
+++ b/app/src/test/java/com/example/razorpaydemo/ExampleUnitTest.kt
@@ -0,0 +1,17 @@
+package com.example.razorpaydemo
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..7b9b67d
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,10 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    id 'com.android.application' version '7.2.1' apply false
+    id 'com.android.library' version '7.2.1' apply false
+    id 'org.jetbrains.kotlin.android' version '1.6.10' apply false
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..cd0519b
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,23 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..e708b1c
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..362cfa4
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Mon Aug 22 19:21:55 IST 2022
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..4f906e0
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..ac1b06f
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/library/.gitignore b/library/.gitignore
new file mode 100644
index 0000000..42afabf
--- /dev/null
+++ b/library/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/library/build.gradle b/library/build.gradle
new file mode 100644
index 0000000..f2ea5c8
--- /dev/null
+++ b/library/build.gradle
@@ -0,0 +1,54 @@
+plugins {
+    id 'com.android.library'
+    id 'org.jetbrains.kotlin.android'
+    id 'kotlin-kapt'
+}
+
+android {
+    compileSdk 32
+
+    defaultConfig {
+        minSdk 21
+        targetSdk 32
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles "consumer-rules.pro"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    buildFeatures {
+        viewBinding true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = '11'
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.core:core-ktx:1.8.0'
+    implementation 'androidx.appcompat:appcompat:1.5.0'
+    implementation 'com.google.android.material:material:1.6.1'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    implementation 'com.razorpay:checkout:1.6.20'
+    implementation('com.google.code.gson:gson:2.8.9') {
+        exclude module: 'com.google.code.gson'
+    }
+
+    //retrofit
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation 'com.squareup.okhttp3:logging-interceptor:4.9.0'
+
+}
\ No newline at end of file
diff --git a/library/consumer-rules.pro b/library/consumer-rules.pro
new file mode 100644
index 0000000..e69de29
diff --git a/library/proguard-rules.pro b/library/proguard-rules.pro
new file mode 100644
index 0000000..481bb43
--- /dev/null
+++ b/library/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/library/src/androidTest/java/com/razorpay/library/ExampleInstrumentedTest.kt b/library/src/androidTest/java/com/razorpay/library/ExampleInstrumentedTest.kt
new file mode 100644
index 0000000..5f2181a
--- /dev/null
+++ b/library/src/androidTest/java/com/razorpay/library/ExampleInstrumentedTest.kt
@@ -0,0 +1,24 @@
+package com.razorpay.library
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.razorpay.library.test", appContext.packageName)
+    }
+}
\ No newline at end of file
diff --git a/library/src/main/AndroidManifest.xml b/library/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..e374099
--- /dev/null
+++ b/library/src/main/AndroidManifest.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.razorpay.library">
+
+    <application>
+        <activity
+            android:name=".PaymentActivity"
+            android:exported="true" />
+    </application>
+</manifest>
\ No newline at end of file
diff --git a/library/src/main/java/com/razorpay/library/OpenPaymentController.java b/library/src/main/java/com/razorpay/library/OpenPaymentController.java
new file mode 100644
index 0000000..5672002
--- /dev/null
+++ b/library/src/main/java/com/razorpay/library/OpenPaymentController.java
@@ -0,0 +1,45 @@
+package com.razorpay.library;
+
+import android.content.Context;
+import android.content.Intent;
+
+import com.razorpay.PaymentData;
+
+public class OpenPaymentController {
+    private static PaymentCallBack callBack;
+
+    public OpenPaymentController(PaymentCallBack callBack, Intent intent, Context context) {
+        OpenPaymentController.callBack = callBack;
+        Intent intent1 = new Intent(context, PaymentActivity.class);
+
+        intent1.putExtra("order_id", intent.getStringExtra("order_id"));
+        intent1.putExtra("receipt", intent.getStringExtra("receipt"));
+        intent1.putExtra("currency", intent.getStringExtra("currency"));
+        intent1.putExtra("name", intent.getStringExtra("name"));
+        intent1.putExtra("description", intent.getStringExtra("description"));
+        intent1.putExtra("amount", intent.getLongExtra("amount",0L));
+        intent1.putExtra("email", intent.getStringExtra("email"));
+        intent1.putExtra("mobile", intent.getStringExtra("mobile"));
+        intent1.putExtra("address", intent.getStringExtra("address"));
+        intent1.putExtra("api_key", intent.getStringExtra("api_key"));
+        intent1.putExtra("key_secret", intent.getStringExtra("key_secret"));
+
+        context.startActivity(intent1);
+        intent1.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+
+    }
+
+    public static void setSuccess(String s, PaymentData paymentData, boolean isSignatureVerified) {
+        if (callBack != null) callBack.success(s, paymentData, isSignatureVerified);
+    }
+
+    public static void setFailed(int p0, String s, PaymentData p2) {
+        if (callBack != null) callBack.failed(p0, s, p2);
+    }
+
+    public interface PaymentCallBack {
+        void success(String s, PaymentData paymentData, boolean isSignatureVerified);
+
+        void failed(int p0, String s, PaymentData p2);
+    }
+}
diff --git a/library/src/main/java/com/razorpay/library/PaymentActivity.kt b/library/src/main/java/com/razorpay/library/PaymentActivity.kt
new file mode 100644
index 0000000..4e90c57
--- /dev/null
+++ b/library/src/main/java/com/razorpay/library/PaymentActivity.kt
@@ -0,0 +1,157 @@
+package com.razorpay.library
+
+import android.content.Context
+import android.os.Bundle
+import android.util.Log
+import androidx.appcompat.app.AppCompatActivity
+import com.razorpay.Checkout
+import com.razorpay.PaymentData
+import com.razorpay.PaymentResultWithDataListener
+import com.razorpay.library.utils.PrefManager
+import org.json.JSONObject
+
+class PaymentActivity : AppCompatActivity(), PaymentResultWithDataListener {
+    private var name: String? = null
+    private var description: String? = null
+    private var amount: Long? = null
+    private var email: String? = null
+    private var mobile: String? = null
+    private var address: String? = null
+    private var currency: String? = null
+    private var orderId: String? = null
+    private var receipt: String? = null
+    private lateinit var context: Context
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_payment)
+        context = this
+
+        intent?.let {
+
+            orderId = it.getStringExtra("order_id")
+            receipt = it.getStringExtra("receipt")
+            currency = it.getStringExtra("currency")
+            name = it.getStringExtra("name")
+            description = it.getStringExtra("description")
+            amount = it.getLongExtra("amount", 0L)
+            email = it.getStringExtra("email")
+            mobile = it.getStringExtra("mobile")
+            address = it.getStringExtra("address")
+            PrefManager.getInstance(context).setStringValue("api_key", it.getStringExtra("api_key"))
+            PrefManager.getInstance(context)
+                .setStringValue("key_secret", it.getStringExtra("key_secret"))
+
+            initRazorpay(
+                name,
+                description,
+                orderId,
+                receipt,
+                amount,
+                email,
+                mobile,
+                address,
+                currency
+            )
+        }
+    }
+
+    private fun initRazorpay(
+        fullName: String?,
+        description: String?,
+        razorPayOrderId: String?,
+        receipt: String?,
+        amount: Long?,
+        email: String?,
+        mobile: String?,
+        fullAddress: String?,
+        currency: String?
+    ) {
+        val activity: PaymentActivity? = this
+        val co = Checkout()
+        co.setKeyID(PrefManager.getInstance(context).getStringValue("api_key"))
+        try {
+
+            val options = JSONObject()
+            options.put("name", fullName)
+            options.put("description", description)
+            options.put("image", "https://s3.amazonaws.com/rzp-mobile/images/rzp.png")
+            options.put("currency", currency)
+            options.put(
+                "order_id",
+                razorPayOrderId
+            ) //First you have to get razorpayOrderId using razorpay API
+            options.put("amount", amount)
+
+            val preFill = JSONObject()
+            preFill.put("email", email)
+            preFill.put("contact", mobile)
+
+            val noTes = JSONObject()
+            noTes.put("address", fullAddress)
+            noTes.put("merchant_order_id", receipt)
+            options.put("prefill", preFill)
+            options.put("notes", noTes)
+            co.open(activity, options)
+        } catch (e: Exception) {
+            Log.i("tag", "msg=====" + e.message)
+            e.printStackTrace()
+        }
+
+    }
+
+    override fun onPaymentSuccess(s: String?, p1: PaymentData?) {
+
+        try {
+
+            Log.d("Payment", "call onPaymentSuccess() on PaymentActivity")
+            var razorpaySignature: String?
+            var razorpayPaymentId: String?
+            var razorpayOrderId: String?
+
+            p1?.let {
+                razorpaySignature = it.signature
+                razorpayPaymentId = it.paymentId
+                razorpayOrderId = it.orderId
+                Log.d(
+                    "Razorpay",
+                    "Success:$s\nPayId:$razorpayPaymentId  OrderId:$razorpayOrderId   Signature:$razorpaySignature"
+                )
+
+                if (VerifySignatureUtils.isSignatureVerify(
+                        razorpayOrderId, razorpayPaymentId, razorpaySignature, context
+                    )
+                ) {
+                    OpenPaymentController.setSuccess(s, p1, true)
+                    Log.d("Razorpay", "Success:$s")
+                    finish()
+                } else {
+                    OpenPaymentController.setSuccess(s, p1, false)
+                }
+            }
+
+
+        } catch (e: Exception) {
+            e.printStackTrace();
+            Log.d("Razorpay", "Exception:" + e.message);
+        }
+    }
+
+    override fun onPaymentError(p0: Int, s: String?, p2: PaymentData?) {
+
+        Log.d("Payment", "call onPaymentError() on PaymentActivity")
+
+        try {
+            OpenPaymentController.setFailed(p0, s, p2)
+            finish()
+        } catch (e: java.lang.Exception) {
+            e.printStackTrace()
+        }
+    }
+
+    override fun onStop() {
+        super.onStop()
+        Checkout.clearUserData(this)
+    }
+
+}
\ No newline at end of file
diff --git a/library/src/main/java/com/razorpay/library/VerifySignatureUtils.kt b/library/src/main/java/com/razorpay/library/VerifySignatureUtils.kt
new file mode 100644
index 0000000..4302b4a
--- /dev/null
+++ b/library/src/main/java/com/razorpay/library/VerifySignatureUtils.kt
@@ -0,0 +1,38 @@
+package com.razorpay.library
+
+import android.content.Context
+import com.razorpay.library.utils.PrefManager
+import javax.crypto.Mac
+import javax.crypto.spec.SecretKeySpec
+
+object VerifySignatureUtils {
+
+    fun isSignatureVerify(
+        razorpayOrderId: String?,
+        razorpayPaymentId: String?,
+        razorpaySignature: String?,
+        context: Context?
+    ): Boolean {
+        val data = "$razorpayOrderId|$razorpayPaymentId"
+            val generatedSignature = hmacWithJava("HmacSHA256", data, PrefManager.getInstance(context).getStringValue("key_secret"))
+        return generatedSignature.contentEquals(razorpaySignature)
+    }
+
+    private fun hmacWithJava(algorithm: String?, data: String, razorpayTestSecret: String): String {
+        val secretKeySpec = SecretKeySpec(razorpayTestSecret.toByteArray(), algorithm)
+        val mac = Mac.getInstance(algorithm)
+        mac.init(secretKeySpec)
+        return bytesToHex(mac.doFinal(data.toByteArray()))
+    }
+
+    private fun bytesToHex(hash: ByteArray): String {
+        val hexString = StringBuilder(2 * hash.size)
+        for (h in hash) {
+            val hex = Integer.toHexString(0xff and h.toInt())
+            if (hex.length == 1) hexString.append('0')
+            hexString.append(hex)
+        }
+        return hexString.toString()
+    }
+
+}
\ No newline at end of file
diff --git a/library/src/main/java/com/razorpay/library/utils/PrefManager.java b/library/src/main/java/com/razorpay/library/utils/PrefManager.java
new file mode 100644
index 0000000..b8573c5
--- /dev/null
+++ b/library/src/main/java/com/razorpay/library/utils/PrefManager.java
@@ -0,0 +1,92 @@
+package com.razorpay.library.utils;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+public class PrefManager {
+
+    private static PrefManager instance;
+    private static final String PREF_NAME = "razorpayApp";
+    private SharedPreferences preferences;
+    private SharedPreferences.Editor editor;
+    private Context context;
+    int PRIVATE_MODE = 0;
+
+    public PrefManager(Context context) {
+
+        this.context = context;
+        preferences = context.getSharedPreferences(PREF_NAME, PRIVATE_MODE);
+        editor = preferences.edit();
+    }
+
+    public static PrefManager getInstance(Context context) {
+        if (instance == null) {
+            instance = new PrefManager(context);
+        }
+        return instance;
+    }
+
+    public boolean getBooleanValue(String key) {
+        return this.preferences.getBoolean(key, false);
+    }
+
+    public void setBooleanValue(String key, boolean value) {
+        this.editor.putBoolean(key, value);
+        this.editor.commit();
+    }
+
+    public String getStringValue(String key) {
+        return this.preferences.getString(key, "");
+    }
+
+    public void setStringValue(String key, String value) {
+        this.editor.putString(key, value);
+        this.editor.commit();
+    }
+
+    private int getIntValue(String key) {
+        return this.preferences.getInt(key, 0);
+    }
+
+    private void setIntValue(String key, int value) {
+        this.editor.putInt(key, value);
+        this.editor.commit();
+    }
+
+    private long getLongValue(String key) {
+        return this.preferences.getLong(key, 0);
+    }
+
+    private void setLongValue(String key, long value) {
+        this.editor.putLong(key, value);
+        this.editor.commit();
+    }
+
+    public void setLatitudeValue(String key, String value) {
+        this.editor.putString(key, value);
+        this.editor.commit();
+    }
+
+    public String getLatitudeValue(String key) {
+        return this.preferences.getString(key, null);
+    }
+
+    public void setLongitudeValue(String key, String value) {
+        this.editor.putString(key, value);
+        this.editor.commit();
+    }
+
+    public String getLongitudeValue(String key) {
+        return this.preferences.getString(key, null);
+    }
+
+    public void clearPrefs() {
+        this.editor.clear();
+        this.editor.commit();
+    }
+
+    public void removeFromPreference(String key) {
+        this.editor.remove(key);
+        this.editor.commit();
+    }
+}
diff --git a/library/src/main/res/drawable/bg_corner_white_10.xml b/library/src/main/res/drawable/bg_corner_white_10.xml
new file mode 100644
index 0000000..19533d6
--- /dev/null
+++ b/library/src/main/res/drawable/bg_corner_white_10.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/white"/>
+    <corners android:radius="5dp"/>
+
+</shape>
\ No newline at end of file
diff --git a/library/src/main/res/drawable/bg_select_btn.xml b/library/src/main/res/drawable/bg_select_btn.xml
new file mode 100644
index 0000000..788270d
--- /dev/null
+++ b/library/src/main/res/drawable/bg_select_btn.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/buttonRedcolor"/>
+    <corners android:radius="5dp"/>
+</shape>
\ No newline at end of file
diff --git a/library/src/main/res/drawable/bg_select_btn_ok.xml b/library/src/main/res/drawable/bg_select_btn_ok.xml
new file mode 100644
index 0000000..85c05b6
--- /dev/null
+++ b/library/src/main/res/drawable/bg_select_btn_ok.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/green"/>
+    <corners android:radius="5dp"/>
+</shape>
\ No newline at end of file
diff --git a/library/src/main/res/layout/activity_payment.xml b/library/src/main/res/layout/activity_payment.xml
new file mode 100644
index 0000000..626af65
--- /dev/null
+++ b/library/src/main/res/layout/activity_payment.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".PaymentActivity">
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/library/src/main/res/layout/dlg_alert.xml b/library/src/main/res/layout/dlg_alert.xml
new file mode 100644
index 0000000..9108bca
--- /dev/null
+++ b/library/src/main/res/layout/dlg_alert.xml
@@ -0,0 +1,102 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_gravity="center"
+    android:descendantFocusability="beforeDescendants"
+    android:focusableInTouchMode="true"
+    android:gravity="center"
+    android:orientation="vertical"
+    tools:ignore="MissingPrefix">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="25dp"
+        android:background="@drawable/bg_corner_white_10"
+        android:orientation="vertical"
+        android:paddingBottom="10dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1"
+            android:orientation="vertical"
+            android:padding="7dp">
+
+
+            <TextView
+                android:id="@+id/tvTitleAlertDialog"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginHorizontal="12dp"
+                android:layout_marginTop="7dp"
+                android:gravity="center"
+                android:text="Title"
+                android:textColor="@color/black"
+                android:textSize="18sp"
+                android:textStyle="bold" />
+
+
+            <TextView
+                android:id="@+id/tvDescAlertDialog"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginHorizontal="12dp"
+                android:layout_marginTop="7dp"
+                android:gravity="center"
+                android:text="Message content"
+                android:textColor="@color/black"
+                android:textSize="14sp" />
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:layout_marginTop="10dp"
+            android:gravity="center"
+            android:orientation="horizontal">
+
+            <LinearLayout
+                android:id="@+id/llBottomView"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="10dp"
+                android:layout_marginEnd="25dp"
+                android:layout_marginBottom="10dp"
+                android:gravity="end">
+
+                <TextView
+                    android:id="@+id/tvCancelAlertDialog"
+                    style="@style/cancel_button"
+                    android:layout_marginEnd="5dp"
+                    android:gravity="center"
+                    android:paddingHorizontal="20dp"
+                    android:paddingVertical="10dp"
+                    android:text="@string/cancel"
+                    android:textAllCaps="true"
+                    android:textColor="@color/white"
+                    tools:ignore="RtlCompat" />
+
+                <TextView
+                    android:id="@+id/tvOkAlertDialog"
+                    style="@style/ok_button"
+                    android:layout_marginStart="5dp"
+
+                    android:gravity="center"
+                    android:paddingHorizontal="20dp"
+                    android:paddingVertical="10dp"
+                    android:text="@string/ok"
+                    android:textAllCaps="true"
+                    android:textColor="@color/white"
+                    tools:ignore="RtlCompat" />
+            </LinearLayout>
+
+        </LinearLayout>
+
+    </LinearLayout>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/library/src/main/res/values/colors.xml b/library/src/main/res/values/colors.xml
new file mode 100644
index 0000000..16f026e
--- /dev/null
+++ b/library/src/main/res/values/colors.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="white">#FFFFFF</color>
+    <color name="black">#000000</color>
+    <color name="buttonRedcolor">#FF1F0E</color>
+    <color name="green">#43E64A</color>
+</resources>
\ No newline at end of file
diff --git a/library/src/main/res/values/strings.xml b/library/src/main/res/values/strings.xml
new file mode 100644
index 0000000..651ce14
--- /dev/null
+++ b/library/src/main/res/values/strings.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="ok">OK</string>
+    <string name="cancel">Cancel</string>
+</resources>
\ No newline at end of file
diff --git a/library/src/main/res/values/style.xml b/library/src/main/res/values/style.xml
new file mode 100644
index 0000000..a7c1808
--- /dev/null
+++ b/library/src/main/res/values/style.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="cancel_button">
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:background">@drawable/bg_select_btn</item>
+        <item name="android:textSize">12sp</item>
+    </style>
+
+    <style name="ok_button">
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:background">@drawable/bg_select_btn_ok</item>
+        <item name="android:textSize">12sp</item>
+    </style>
+</resources>
\ No newline at end of file
diff --git a/library/src/test/java/com/razorpay/library/ExampleUnitTest.kt b/library/src/test/java/com/razorpay/library/ExampleUnitTest.kt
new file mode 100644
index 0000000..4331d46
--- /dev/null
+++ b/library/src/test/java/com/razorpay/library/ExampleUnitTest.kt
@@ -0,0 +1,17 @@
+package com.razorpay.library
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}
\ No newline at end of file
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..e075f25
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,18 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        google()
+        mavenCentral()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+        maven { url 'https://jitpack.io' }
+    }
+}
+rootProject.name = "Razorpay Demo"
+include ':app'
+include ':library'