Firemonkey Android AlarmManager to open application

[Ruslan 6]

I need to open application periodically every minute.

For testing I have a simple application with just this code that should open the application:

function getTimeAfterInSecs(Seconds: Integer): Int64;
var
  Calendar: JCalendar;
begin
  Calendar := TJCalendar.JavaClass.getInstance;
  Calendar.add(TJCalendar.JavaClass.SECOND, Seconds);
  Result := Calendar.getTimeInMillis;
end;

procedure TForm2.Button1Click(Sender: TObject);
var
  Intent: JIntent;
  PendingIntent: JPendingIntent;
  LFlags: Integer;
begin
  Intent := TJIntent.Create;
  Intent.setClassName(TAndroidHelper.Context, StringToJString('com.embarcadero.firemonkey.FMXNativeActivity'));
  LFlags := TJPendingIntent.JavaClass.FLAG_UPDATE_CURRENT or TJPendingIntent.JavaClass.FLAG_IMMUTABLE;
  PendingIntent := TJPendingIntent.JavaClass.getActivity(TAndroidHelper.Context, 1, Intent, LFlags);
  TAndroidHelper.AlarmManager.&set(TJAlarmManager.JavaClass.RTC_WAKEUP, getTimeAfterInSecs(60),  PendingIntent);
end;

procedure TForm2.Button2Click(Sender: TObject);
var
  Intent: JIntent;
  PendingIntent: JPendingIntent;
  LFlags: Integer;
  AlarmManager: JAlarmManager;
begin
  Intent := TJIntent.Create;
  Intent.setClassName(TAndroidHelper.Context, StringToJString('com.embarcadero.firemonkey.FMXNativeActivity'));
  LFlags := TJPendingIntent.JavaClass.FLAG_UPDATE_CURRENT or TJPendingIntent.JavaClass.FLAG_IMMUTABLE;
  PendingIntent := TJPendingIntent.JavaClass.getActivity(TAndroidHelper.Context, 0, Intent, LFlags);
  AlarmManager := TJAlarmManager.Wrap(TAndroidHelper.Context.getSystemService(TJContext.JavaClass.ALARM_SERVICE));
  AlarmManager.setExactAndAllowWhileIdle(TJAlarmManager.JavaClass.RTC_WAKEUP, getTimeAfterInSecs(60), PendingIntent);
end;

Unfortunately the application does not open.

What am I doing wrong?

 

Edited May 20, 2024 by Ruslan

[Dave Nottage 599]

1 hour ago, Ruslan said:

What am I doing wrong?

It could be this:

 

https://developer.android.com/about/versions/14/changes/schedule-exact-alarms

 

..and/or it could be this:

https://developer.android.com/guide/components/activities/background-starts

 

Using a logcat viewer to check what messages are emitted by the system would help diagnose the problem.