Fuzelmomin

app crash when application ForegroundMode

1

E/AndroidRuntime(15670): FATAL EXCEPTION: main E/AndroidRuntime(15670): Process: com.example, PID: 15670 E/AndroidRuntime(15670): java.lang.RuntimeException: Unable to destroy activity {com.example/com.example.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.lifecycle.Lifecycle.removeObserver(androidx.lifecycle.LifecycleObserver)' on a null object reference E/AndroidRuntime(15670):...