[Feature] Add Splash screen

AnkiDroid/src/main/AndroidManifest.xml

@@ -114,7 +114,7 @@
         <activity
             android:name="com.ichi2.anki.IntentHandler"
             android:configChanges="keyboardHidden|orientation|screenSize"
-            android:theme="@android:style/Theme.Translucent.NoTitleBar"
+            android:theme="@style/Theme_Dark.Launcher"
             android:exported="true"
             >
             <intent-filter>

AnkiDroid/src/main/java/com/ichi2/anki/IntentHandler.kt

@@ -19,7 +19,10 @@ package com.ichi2.anki
 import android.app.Activity
 import android.content.Context
 import android.content.Intent
+import android.os.Build
 import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
 import android.os.Message
 import androidx.annotation.CheckResult
 import androidx.annotation.VisibleForTesting
@@ -31,6 +34,7 @@ import com.ichi2.anki.preferences.sharedPrefs
 import com.ichi2.anki.servicelayer.ScopedStorageService
 import com.ichi2.anki.services.ReminderService
 import com.ichi2.annotations.NeedsTest
+import com.ichi2.libanki.utils.TimeManager
 import com.ichi2.themes.Themes
 import com.ichi2.themes.Themes.disableXiaomiForceDarkMode
 import com.ichi2.utils.FileUtil
@@ -44,6 +48,8 @@ import com.ichi2.utils.copyToClipboard
 import com.ichi2.utils.trimToLength
 import timber.log.Timber
 import java.io.File
+import java.time.Duration
+import java.time.Instant
 import java.util.function.Consumer
 import kotlin.math.max
 import kotlin.math.min
@@ -56,32 +62,61 @@ import kotlin.math.min
  */
 class IntentHandler : Activity() {
     override fun onCreate(savedInstanceState: Bundle?) {
-        // Note: This is our entry point from the launcher with intent: android.intent.action.MAIN
-        super.onCreate(savedInstanceState)
-        Themes.setTheme(this)
-        disableXiaomiForceDarkMode(this)
-        setContentView(R.layout.progress_bar)
-        val intent = intent
-        Timber.v(intent.toString())
-        val reloadIntent = Intent(this, DeckPicker::class.java)
-        reloadIntent.setDataAndType(getIntent().data, getIntent().type)
-        val action = intent.action
-        // #6157 - We want to block actions that need permissions we don't have, but not the default case
-        // as this requires nothing
-        val runIfStoragePermissions = Consumer { runnable: Runnable -> performActionIfStorageAccessible(runnable, reloadIntent, action) }
-        when (getLaunchType(intent)) {
-            LaunchType.FILE_IMPORT -> runIfStoragePermissions.accept(Runnable { handleFileImport(intent, reloadIntent, action) })
-            LaunchType.SYNC -> runIfStoragePermissions.accept(Runnable { handleSyncIntent(reloadIntent, action) })
-            LaunchType.REVIEW -> runIfStoragePermissions.accept(Runnable { handleReviewIntent(intent) })
-            LaunchType.DEFAULT_START_APP_IF_NEW -> {
-                Timber.d("onCreate() performing default action")
-                launchDeckPickerIfNoOtherTasks(reloadIntent)
-            }
-            LaunchType.COPY_DEBUG_INFO -> {
-                copyDebugInfoToClipboard(intent)
-                finish()
+        val init = {
+//            setContentView(R.layout.progress_bar)
+        }
+        val handleScreen = { delay: Long ->
+            Handler(Looper.getMainLooper()).postDelayed({
+                Themes.setTheme(this)
+                disableXiaomiForceDarkMode(this)
+                val intent = intent
+                Timber.v(intent.toString())
+                val reloadIntent = Intent(this, DeckPicker::class.java)
+                reloadIntent.setDataAndType(getIntent().data, getIntent().type)
+                val action = intent.action
+                // #6157 - We want to block actions that need permissions we don't have, but not the default case
+                // as this requires nothing
+                val runIfStoragePermissions = Consumer { runnable: Runnable ->
+                    performActionIfStorageAccessible(runnable, reloadIntent, action)
+                }
+                when (getLaunchType(intent)) {
+                    LaunchType.FILE_IMPORT -> runIfStoragePermissions.accept(Runnable { handleFileImport(intent, reloadIntent, action) })
+                    LaunchType.SYNC -> runIfStoragePermissions.accept(Runnable { handleSyncIntent(reloadIntent, action) })
+                    LaunchType.REVIEW -> runIfStoragePermissions.accept(Runnable { handleReviewIntent(intent) })
+                    LaunchType.DEFAULT_START_APP_IF_NEW -> {
+                        Timber.d("onCreate() performing default action")
+                        launchDeckPickerIfNoOtherTasks(reloadIntent)
+                    }
+                    LaunchType.COPY_DEBUG_INFO -> {
+                        copyDebugInfoToClipboard(intent)
+                        finish()
+                    }
+                }
+            }, delay)
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+            splashScreen.setOnExitAnimationListener { splashScreenView ->
+                val animationDuration = splashScreenView.iconAnimationDuration
+                val animationStart = splashScreenView.iconAnimationStart
+
+                Timber.v("duration :${animationDuration?.toMillis()} start $animationStart")
+                val remainingDuration = if (animationDuration != null && animationStart != null) {
+                    (animationDuration - Duration.between(animationStart, Instant.ofEpochMilli(TimeManager.time.intTimeMS())))
+                        .toMillis()
+                        .coerceAtLeast(0L)
+                } else {
+                    0L
+                }
+                Timber.v("remainDuration :$remainingDuration")
+                handleScreen(remainingDuration)
             }
+            init()
+            super.onCreate(savedInstanceState)
+        } else {
+            handleScreen(1000L)
+            super.onCreate(savedInstanceState)
         }
+        // Note: This is our entry point from the launcher with intent: android.intent.action.MAIN
     }
 
     private fun copyDebugInfoToClipboard(intent: Intent) {

AnkiDroid/src/main/res/drawable/launch_screen.xml

@@ -1,15 +1,16 @@
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android" android:opacity="opaque">
   <!-- The background color, preferably the same as your normal theme -->
   <item android:drawable="@color/material_theme_grey"/>
-  <!-- Your product logo - 144dp color version of your app icon -->
-  <item>
-    <bitmap
-      android:src="@drawable/logo_star_144dp"
+  <!-- Your product logo - 192dp color version of your app icon -->
+  <item
+      android:width="288dp"
+      android:height="288dp"
+      android:drawable="@drawable/splash_icon"
       android:gravity="center"/>
-  </item>
-    <item android:top="200dp">
-        <bitmap
-            android:src="@drawable/ankidroid_txt"
-            android:gravity="center"/>
-    </item>
+  <item
+      android:width="200dp"
+      android:height="80dp"
+      android:drawable="@drawable/splash_branding"
+      android:gravity="center|bottom"
+      android:bottom="48dp"/>
 </layer-list>

AnkiDroid/src/main/res/drawable/splash_branding.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:width="200dp"
+        android:height="80dp"
+        android:drawable="@android:color/transparent"
+        android:gravity="center" />
+    <item
+        android:drawable="@drawable/ankidroid_txt"
+        android:height="31.9dp"
+        android:width="200dp"
+        android:gravity="center" />
+</layer-list>