Handle notification permission in BaseActivity

app/src/main/java/org/wikipedia/activity/BaseActivity.kt

@@ -2,11 +2,13 @@ package org.wikipedia.activity
 
 import android.content.Intent
 import android.graphics.drawable.ColorDrawable
+import android.os.Build
 import android.os.Bundle
 import android.view.MenuItem
 import android.view.MotionEvent
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.annotation.ColorInt
+import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.ActivityCompat
 import androidx.core.content.pm.ShortcutManagerCompat
@@ -78,8 +80,25 @@ abstract class BaseActivity : AppCompatActivity(), ConnectionStateMonitor.Callba
         }
     }
 
+    @RequiresApi(Build.VERSION_CODES.O)
     private val notificationPermissionLauncher = registerForActivityResult(ActivityResultContracts.RequestPermission()) { granted ->
-        // TODO: Show message(s) to the user if they deny the permission
+        if(!granted){
+            if(ActivityCompat.shouldShowRequestPermissionRationale(this,android.Manifest.permission.POST_NOTIFICATIONS)){
+                //User denied once->Show Snackbar
+                FeedbackUtil.makeSnackbar(this, getString(R.string.notification_permission_rationale))
+                    .setAction(R.string.notification_permission_rationale_action){
+                        DeviceUtil.openNotificationSettings(this)
+                    }
+                    .show()
+            }else{
+                //User denied (with "Don't Ask Again")
+                FeedbackUtil.makeSnackbar(this, getString(R.string.notification_permission_denied))
+                    .setAction(R.string.app_settings){
+                        DeviceUtil.openNotificationSettings(this)
+                    }
+                    .show()
+            }
+        }
     }
 
     private val yearInReviewLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
@@ -193,6 +212,7 @@ abstract class BaseActivity : AppCompatActivity(), ConnectionStateMonitor.Callba
         BreadCrumbLogEvent.logScreenShown(this)
     }
 
+    @RequiresApi(Build.VERSION_CODES.O)
     override fun onStart() {
         super.onStart()
         NotificationPresenter.maybeRequestPermission(this, notificationPermissionLauncher)

app/src/main/java/org/wikipedia/util/DeviceUtil.kt

@@ -2,12 +2,14 @@ package org.wikipedia.util
 
 import android.app.Activity
 import android.content.Context
+import android.content.Intent
 import android.content.res.Configuration
 import android.content.res.Resources
 import android.graphics.Color
 import android.net.ConnectivityManager
 import android.os.Build
 import android.os.Handler
+import android.provider.Settings
 import android.view.KeyCharacterMap
 import android.view.KeyEvent
 import android.view.View
@@ -16,6 +18,7 @@ import android.view.accessibility.AccessibilityManager
 import android.view.inputmethod.InputMethodManager
 import androidx.activity.enableEdgeToEdge
 import androidx.annotation.ColorInt
+import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.core.view.WindowCompat
@@ -107,6 +110,14 @@ object DeviceUtil {
         WindowCompat.getInsetsController(activity.window, activity.window.decorView).isAppearanceLightStatusBars = !WikipediaApp.instance.currentTheme.isDark
     }
 
+    @RequiresApi(Build.VERSION_CODES.O)
+    fun openNotificationSettings(context: Context){
+        val intent= Intent(Settings.ACTION_APP_NOTIFICATION_SETTINGS).apply {
+            putExtra(Settings.EXTRA_APP_PACKAGE,context.packageName)
+        }
+        context.startActivity(intent)
+    }
+
     val isOnWiFi: Boolean
         get() {
             val info = (WikipediaApp.instance.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager)

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

@@ -825,6 +825,9 @@
     <string name="notifications_all_types_text">All types</string>
     <string name="notifications_menu_user_talk_page">%s\'s talk page</string>
     <string name="notifications_offline_disable_message">The function is not available while offline.</string>
+    <string name="notification_permission_rationale">Enable Notification to stay updated</string>
+    <string name="notification_permission_rationale_action">Settings</string>
+    <string name="notification_permission_denied">Notifications are disabled. Enable them in settings.</string>
     <!-- /Notifications -->
 
     <!-- The Feed -->