Fixes #4294 'added profile deleted message'

app/src/main/java/org/oppia/android/app/fragment/FragmentComponentImpl.kt

@@ -54,6 +54,7 @@ import org.oppia.android.app.profile.ResetPinDialogFragment
 import org.oppia.android.app.profileprogress.ProfilePictureEditDialogFragment
 import org.oppia.android.app.profileprogress.ProfileProgressFragment
 import org.oppia.android.app.resumelesson.ResumeLessonFragment
+import org.oppia.android.app.settings.profile.DeleteProfileSuccessDialogFragment
 import org.oppia.android.app.settings.profile.ProfileEditDeletionDialogFragment
 import org.oppia.android.app.settings.profile.ProfileEditFragment
 import org.oppia.android.app.settings.profile.ProfileListFragment
@@ -109,6 +110,7 @@ interface FragmentComponentImpl : FragmentComponent, ViewComponentBuilderInjecto
   fun inject(cellularAudioDialogFragment: CellularAudioDialogFragment)
   fun inject(completedStoryListFragment: CompletedStoryListFragment)
   fun inject(conceptCardFragment: ConceptCardFragment)
+  fun inject(deleteProfileSuccessDialogFragment: DeleteProfileSuccessDialogFragment)
   fun inject(developerOptionsFragment: DeveloperOptionsFragment)
   fun inject(downloadsTabFragment: DownloadsTabFragment)
   fun inject(exitProfileDialogFragment: ExitProfileDialogFragment)

app/src/main/java/org/oppia/android/app/settings/profile/DeleteProfileSuccessDialogFragment.kt

@@ -0,0 +1,54 @@
+package org.oppia.android.app.settings.profile
+
+import android.app.Dialog
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import androidx.appcompat.app.AlertDialog
+import androidx.fragment.app.DialogFragment
+import org.oppia.android.R
+import org.oppia.android.app.administratorcontrols.AdministratorControlsActivity
+import org.oppia.android.app.fragment.FragmentComponentImpl
+import org.oppia.android.app.fragment.InjectableDialogFragment
+
+/** [DialogFragment] that notifies the user after a profile is successfully deleted. */
+class DeleteProfileSuccessDialogFragment : InjectableDialogFragment() {
+
+  companion object {
+    const val TAG = "DELETE_SUCCESS_DIALOG_FRAGMENT"
+
+    /**
+     * This function returns a new instance of [DeleteProfileSuccessDialogFragment]
+     */
+    fun createNewInstance(): DeleteProfileSuccessDialogFragment {
+      return DeleteProfileSuccessDialogFragment()
+    }
+  }
+
+  override fun onAttach(context: Context) {
+    super.onAttach(context)
+    (fragmentComponent as FragmentComponentImpl).inject(this)
+  }
+
+  override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+
+    val alertDialog = AlertDialog
+      .Builder(requireContext(), R.style.OppiaAlertDialogTheme).apply {
+        setMessage(R.string.profile_edit_delete_successful_message)
+        setPositiveButton(R.string.log_out_dialog_okay_button) { _, _ ->
+          if (requireContext().resources.getBoolean(R.bool.isTablet)) {
+            val intent =
+              Intent(requireContext(), AdministratorControlsActivity::class.java)
+            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
+            startActivity(intent)
+          } else {
+            val intent = Intent(requireContext(), ProfileListActivity::class.java)
+            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
+            startActivity(intent)
+          }
+        }
+      }.create()
+    alertDialog.setCanceledOnTouchOutside(false)
+    return alertDialog
+  }
+}

app/src/main/java/org/oppia/android/app/settings/profile/ProfileEditFragmentPresenter.kt

@@ -1,13 +1,11 @@
 package org.oppia.android.app.settings.profile
 
-import android.content.Intent
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.Observer
-import org.oppia.android.R
 import org.oppia.android.app.administratorcontrols.AdministratorControlsActivity
 import org.oppia.android.app.administratorcontrols.ProfileEditDeletionDialogListener
 import org.oppia.android.app.fragment.FragmentScope
@@ -133,18 +131,10 @@ class ProfileEditFragmentPresenter @Inject constructor(
       .deleteProfile(ProfileId.newBuilder().setInternalId(internalProfileId).build()).toLiveData()
       .observe(
         fragment,
-        Observer {
+        {
           if (it is AsyncResult.Success) {
-            if (fragment.requireContext().resources.getBoolean(R.bool.isTablet)) {
-              val intent =
-                Intent(fragment.requireContext(), AdministratorControlsActivity::class.java)
-              intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
-              fragment.startActivity(intent)
-            } else {
-              val intent = Intent(fragment.requireContext(), ProfileListActivity::class.java)
-              intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
-              fragment.startActivity(intent)
-            }
+            DeleteProfileSuccessDialogFragment.createNewInstance()
+              .showNow(fragment.childFragmentManager, DeleteProfileSuccessDialogFragment.TAG)
           }
         }
       )

app/src/main/res/values/strings.xml

@@ -341,6 +341,7 @@
   <string name="profile_edit_delete">Profile Deletion</string>
   <string name="profile_edit_delete_dialog_title">Permanently delete this profile?</string>
   <string name="profile_edit_delete_dialog_message">All progress will be deleted and cannot be recovered.</string>
+  <string name="profile_edit_delete_successful_message">Profile deleted successfully.</string>
   <string name="profile_edit_delete_dialog_positive">Delete</string>
   <string name="profile_edit_delete_dialog_negative">Cancel</string>
   <string name="profile_edit_allow_download_heading">Allow Download Access</string>