LocalNotificationCenter.Current.RequestNotificationPermission Throws NullPointerException #463

Srki94 · 2023-12-17T13:16:39Z

Srki94
Dec 17, 2023

Hi,

I'm using this plugin to notify users daily, using Xamarin Forms Android app.
If I set Alarm and Reminders, plus Notifications permissions prior to starting the app, the App works.
However, my users need to do this often with new updates etc. because they can't login otherwise as my login is wrapped in Try Catch block.

Isn't RequestNotificationPermission() supposed to request the permission?
I get the mentioned error.

Here's the chunk of code :

if (await LocalNotificationCenter.Current.AreNotificationsEnabled() == false) { if (await LocalNotificationCenter.Current.RequestNotificationPermission()) { LocalNotificationCenter.Current.CancelAll(); RegisterReminders(); } } else { LocalNotificationCenter.Current.CancelAll(); RegisterReminders(); }

Any help would be appreciated, thanks!

Here's the full trace :

{Java.Lang.NullPointerException: Attempt to invoke virtual method 'void android.app.Activity.requestPermissions(java.lang.String[], int)' on a null object reference
at Java.Interop.JniEnvironment+StaticMethods.CallStaticVoidMethod (Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x00068] in /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/obj/Release/JniEnvironment.g.cs:13250
at Java.Interop.JniPeerMembers+JniStaticMethods.InvokeVoidMethod (System.String encodedMember, Java.Interop.JniArgumentValue* parameters) [0x00008] in /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/Java.Interop/JniPeerMembers.JniStaticMethods.cs:97
at AndroidX.Core.App.ActivityCompat.RequestPermissions (Android.App.Activity activity, System.String[] permissions, System.Int32 requestCode) [0x00057] in /Users/runner/work/1/s/generated/androidx.core.core/obj/Release/monoandroid12.0/generated/src/AndroidX.Core.App.ActivityCompat.cs:555
at Plugin.LocalNotification.LocalNotificationCenter.RequestNotificationPermissionAsync (Plugin.LocalNotification.NotificationPermission permission) [0x000b3]

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.Activity.requestPermissions(java.lang.String[], int)' on a null object reference
at androidx.core.app.ActivityCompat$Api23Impl.requestPermissions(ActivityCompat.java:893)
at androidx.core.app.ActivityCompat.requestPermissions(ActivityCompat.java:557)
at mono.java.lang.RunnableImplementor.n_run(Native Method)
at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:31)
at android.os.Handler.handleCallback(Handler.java:958)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:230)
at android.os.Looper.loop(Looper.java:319)
at android.app.ActivityThread.main(ActivityThread.java:8893)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:608)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1103)
}