fix:#1216 Min date picker fixed

mifospay/src/main/java/org/mifos/mobilewallet/mifospay/standinginstruction/ui/SIDetailsActivity.kt

@@ -1,8 +1,11 @@
 package org.mifos.mobilewallet.mifospay.standinginstruction.ui
 
+import android.annotation.SuppressLint
 import android.app.DatePickerDialog
 import android.content.res.Resources
+import android.os.Build
 import android.os.Bundle
+import android.support.annotation.RequiresApi
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
@@ -19,6 +22,9 @@ import org.mifos.mobilewallet.mifospay.standinginstruction.presenter.StandingIns
 import org.mifos.mobilewallet.mifospay.utils.Constants
 import org.mifos.mobilewallet.mifospay.utils.DialogBox
 import org.mifos.mobilewallet.mifospay.utils.Utils
+import java.text.SimpleDateFormat
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
 import java.util.*
 import javax.inject.Inject
 
@@ -41,6 +47,7 @@ class SIDetailsActivity : BaseActivity(), StandingInstructionContract.SIDetailsV
     private lateinit var mStandingInstructionPresenter:
             StandingInstructionContract.StandingInstructorDetailsPresenter
 
+    @SuppressLint("NewApi")
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_si_details)
@@ -68,6 +75,7 @@ class SIDetailsActivity : BaseActivity(), StandingInstructionContract.SIDetailsV
                     DatePickerDialog.OnDateSetListener { view, year, monthOfYear, dayOfMonth ->
                         tv_valid_till.text = "$dayOfMonth-${(monthOfYear + 1)}-$year"
                     }, year, month, day)
+            picker.datePicker.minDate = SimpleDateFormat("dd-MM-yyyy").parse(tv_valid_from.text.toString()).time
             picker.show()
         }