16 no permission request popup solution for no androidx branch

android_notify/an_utils.py

@@ -6,7 +6,7 @@
 from .config import (
                      get_python_activity_context, app_storage_path,ON_ANDROID,
                      BitmapFactory, BuildVersion, Bundle,
-                     NotificationManagerClass,AndroidNotification
+                     NotificationManagerClass,AndroidNotification,Intent, Settings, Uri, String, Manifest
                     )
 
 if ON_ANDROID:
@@ -143,7 +143,6 @@ def get_package_path():
     return os.path.dirname(os.path.abspath(__file__))
 
 def get_bitmap_from_path(img_full_path):
-  Uri = autoclass('android.net.Uri')
   uri = Uri.parse(f"file://{img_full_path}")
   return BitmapFactory.decodeStream(context.getContentResolver().openInputStream(uri))
 
@@ -156,3 +155,35 @@ def icon_finder(icon_name):
         # Fallback if pkg_resources not available
         package_dir = get_package_path()
         return os.path.join(package_dir, "fallback-icons", icon_name)
+
+def can_show_permission_request_popup():
+    """
+    Check if we can show permission request popup for POST_NOTIFICATIONS
+    :return: bool
+    """
+    if not ON_ANDROID or BuildVersion.SDK_INT < 33:
+        return False
+
+    return context.shouldShowRequestPermissionRationale(Manifest.POST_NOTIFICATIONS)
+
+def open_settings_screen():
+    intent = Intent()
+    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+    package_name = String(context.getPackageName())    # String() is very important else fails silently with a toast
+    # saying "The app wasn't found in the list of installed apps" - Xiaomi or "unable to find application to perform this action" - Samsung and Techno
+
+    if BuildVersion.SDK_INT >= 26:    # Android 8.0 - android.os.Build.VERSION_CODES.O
+        intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS)
+        intent.putExtra(Settings.EXTRA_APP_PACKAGE, package_name)
+    elif BuildVersion.SDK_INT >= 22:    # Android 5.0 - Build.VERSION_CODES.LOLLIPOP
+        intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS")
+        intent.putExtra("app_package", package_name)
+        intent.putExtra("app_uid", context.getApplicationInfo().uid)
+    else:    # Last Retort is to open App Settings Screen
+        intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
+        intent.addCategory(Intent.CATEGORY_DEFAULT)
+        intent.setData(Uri.parse("package:" + package_name))
+
+    context.startActivity(intent)
+
+    # https://stackoverflow.com/a/45192258/19961621

android_notify/config.py

@@ -44,6 +44,9 @@ def get_activity_class_name():
     NotificationChannel = autoclass('android.app.NotificationChannel')
     RemoteViews = autoclass('android.widget.RemoteViews')
     AndroidNotification = autoclass("android.app.Notification")
+    Settings = autoclass("android.provider.Settings")
+    Uri = autoclass("android.net.Uri")
+    Manifest = autoclass('android.Manifest$permission')
 
     ON_ANDROID = bool(RemoteViews)
 except Exception as e:

android_notify/core.py

@@ -1,7 +1,7 @@
 """ Non-Advanced Stuff """
 import random
 import os, traceback
-from .config import get_python_activity
+from .config import get_python_activity, Manifest
 ON_ANDROID = False
 
 def on_flet_app():
@@ -37,6 +37,8 @@ def on_flet_app():
         traceback.print_exc()
         print("Error importing notification styles")
 
+from .an_utils import can_show_permission_request_popup, open_settings_screen
+
 
 def get_app_root_path():
     path = ''
@@ -55,18 +57,25 @@ def asks_permission_if_needed(no_androidx=False):
     """
     Ask for permission to send notifications if needed.
     """
+    if BuildVersion.SDK_INT < 33 or not ON_ANDROID:
+        return True
+
+    if not can_show_permission_request_popup():
+        print("""android_notify- Permission to send notifications has been denied permanently. Please enable it from settings.
+                This happens when the user denies permission twice from the popup.""")
+        open_settings_screen()
+        return
+
+
     if on_flet_app() or no_androidx:
         Activity = autoclass("android.app.Activity")
-        Manifest = autoclass("android.Manifest$permission")
         PackageManager = autoclass("android.content.pm.PackageManager")
-        VERSION_CODES = autoclass('android.os.Build$VERSION_CODES')
-
-        if BuildVersion.SDK_INT >= 33:
-            permission = Manifest.POST_NOTIFICATIONS
-            granted = context.checkSelfPermission(permission)
+
+        permission = Manifest.POST_NOTIFICATIONS
+        granted = context.checkSelfPermission(permission)
 
-            if granted != PackageManager.PERMISSION_GRANTED:
-                context.requestPermissions([permission], 101)
+        if granted != PackageManager.PERMISSION_GRANTED:
+            context.requestPermissions([permission], 101)
     else: # android package is from p4a which is for kivy
         try:
             from android.permissions import request_permissions, Permission,check_permission # type: ignore

android_notify/sword.py

@@ -6,7 +6,8 @@
 from .an_types import Importance
 from .an_utils import can_accept_arguments, get_python_activity_context, \
     get_android_importance, generate_channel_id, get_img_from_path, setLayoutText, \
-    get_bitmap_from_url, add_data_to_intent, get_sound_uri, icon_finder, get_bitmap_from_path
+    get_bitmap_from_url, add_data_to_intent, get_sound_uri, icon_finder, get_bitmap_from_path, can_show_permission_request_popup, open_settings_screen
+
 
 from .config import from_service_file, get_python_activity,get_notification_manager,ON_ANDROID,on_flet_app
 from .config import (Bundle, String, BuildVersion,
@@ -18,7 +19,7 @@
 from .config import (AndroidNotification, NotificationCompatBuilder,
                      NotificationCompatBigTextStyle,NotificationCompatBigPictureStyle,
                      NotificationCompatInboxStyle,
-                     Color
+                     Color, Manifest
                      )
 from .styles import NotificationStyles
 from .base import BaseNotification
@@ -1081,13 +1082,29 @@ def asks_permission(cls,callback=None):
         Ask for permission to send notifications if needed.
         Passes True to callback if access granted
         """
-        if cls.__requesting_permission or not ON_ANDROID:
+        if cls.__requesting_permission:
             return True
-            
+
         if BuildVersion.SDK_INT < 33: # Android 12 below
             print("android_notify- On android 12 or less don't need permission")
-            if callback:
-                callback(True)
+
+        if not ON_ANDROID or BuildVersion.SDK_INT < 33: # Android 12 below:
+            try:
+                if callback:
+                    if can_accept_arguments(callback, True):
+                        callback(True)
+                    else:
+                        callback()
+            except Exception as request_permission_error:
+                print('Exception: ',request_permission_error)
+                print('Permission response callback error: ',traceback.format_exc())
+
+            return
+
+        if not can_show_permission_request_popup():
+            print("""android_notify- Permission to send notifications has been denied permanently. Please enable it from settings.
+                    This happens when the user denies permission twice from the popup.""")
+            open_settings_screen()
             return
 
         def on_permissions_result(permissions, grants):