My app has a service that registers ScreenStateReceiver which creates a handler when the screen is on and removes it when the screen is off.
My problem is that handler.removeCallbacksAndMessages doesn't work when the screen is off. I know that because I get multiple logs from all the handlers created whenever the screen is on.
My code:
public class mainActivity extends ActionBarActivity {
static Button setButton;
static Context activityContext;
static SharedPreferences preferences;
static SharedPreferences.Editor editor;
static long handlerDelay;
static Handler handler;
static Runnable notificationRunnable;
static Runnable lockRunnable;
static String handlerType;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setButton = (Button) findViewById(R.id.setButton);
activityContext = this;
preferences = getSharedPreferences("values", Context.MODE_PRIVATE);
editor = preferences.edit();
setButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
setButton.setEnabled(false);
setButton.setText("Done");
editor.putBoolean("appSet", true).apply();
handlerDelay = 10000;
editor.putLong("handlerDelay", handlerDelay).apply();
editor.putString("handlerType", "Notification").apply();
Intent intentService = new Intent(activityContext, mainActivity.service.class);
startService(intentService);
lockRunnable = new Runnable() {
@Override
public void run() {
Toast.makeText(activityContext, "Lock Handler", Toast.LENGTH_SHORT).show();
}
};
handler = new Handler();
notificationRunnable = new Runnable() {
@Override
public void run() {
Toast.makeText(activityContext, "Notification Handler", Toast.LENGTH_SHORT).show();
editor.putString("handlerType", "lock").apply();
editor.putLong("handlerDelay", 10 * 1000).apply();
handlerDelay = preferences.getLong("handlerDelay", 0);
handler.postDelayed(lockRunnable, handlerDelay);
}
};
handler.postDelayed(notificationRunnable, handlerDelay);
}
});
}
static public class screenStateReceiver extends BroadcastReceiver {
@Override
public void onReceive(final Context context, Intent intent) {
preferences = context.getSharedPreferences("values", Context.MODE_PRIVATE);
editor = preferences.edit();
handler = new Handler();
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
handler.removeCallbacksAndMessages(null);
}
if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
handlerDelay = preferences.getLong("handlerDelay", 0);
editor.putLong("handlerDelay", handlerDelay).apply();
handlerType = preferences.getString("handlerType", "notification");
if(!(handlerDelay < 0)) {
if (handlerType.equals("notification")) {
notificationRunnable = new Runnable() {
@Override
public void run() {
Toast.makeText(context, "Notification Handler", Toast.LENGTH_SHORT).show();
editor.putString("handlerType", "lock").apply();
editor.putLong("handlerDelay", 10 * 1000).apply();
handlerDelay = preferences.getLong("handlerDelay", 0);
handler.postDelayed(lockRunnable, handlerDelay);
}
};
handler.postDelayed(notificationRunnable, handlerDelay);
}
else if(handlerType.equals("lock")) {
lockRunnable = new Runnable() {
@Override
public void run() {
if(handlerType.equals("lock")) {
Toast.makeText(context, "Lock Handler", Toast.LENGTH_SHORT).show();
Log.e("lock handler", "Lock Handler");
editor.putString("handlerType",null).apply();
}
}
};
handler.postDelayed(lockRunnable, handlerDelay);
}
}
}
}
}
static public class service extends Service {
BroadcastReceiver mReceiver;
@Override
public void onCreate() {
super.onCreate();
IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
mReceiver = new screenStateReceiver();
registerReceiver(mReceiver, filter);
}
@Override
public void onDestroy(){
super.onDestroy();
unregisterReceiver(mReceiver);
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
}
The app is supposed to start another runnable after starting the second runnable.
