broadcastreceiver

How to read all the coming notifications in android

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First you must declare your intent to receive notifications in your manifest, so that you can get the android.permission.BIND_NOTIFICATION_LISTENER_SERVICE permission. AndroidManifest.xml: <service android:name=”.NotificationListener” android:label=”@string/service_name” android:permission=”android.permission.BIND_NOTIFICATION_LISTENER_SERVICE”> <intent-filter> <action android:name=”android.service.notification.NotificationListenerService” /> </intent-filter> </service> Then create a NotificationListenerService class and override the onNotificationPosted function. For more information, read the developer reference here: https://developer.android.com/reference/android/service/notification/NotificationListenerService.html Also look at this simple … Read more

How to use registerReceiver method?

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The whole code if somebody need it. void alarm(Context context, Calendar calendar) { AlarmManager alarmManager = (AlarmManager)context.getSystemService(ALARM_SERVICE); final String SOME_ACTION = “com.android.mytabs.MytabsActivity.AlarmReceiver”; IntentFilter intentFilter = new IntentFilter(SOME_ACTION); AlarmReceiver mReceiver = new AlarmReceiver(); context.registerReceiver(mReceiver, intentFilter); Intent anotherIntent = new Intent(SOME_ACTION); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, anotherIntent, 0); alramManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent); Toast.makeText(context, “Added”, Toast.LENGTH_LONG).show(); } class AlarmReceiver … Read more

Are Android’s BroadcastReceivers started in a new thread?

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The onReceive() method is always called on the main thread (which is also referred to as “UI thread”), unless you requested it to be scheduled on a different thread using the registerReceiver() variant: Context.registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler)

How to trigger broadcast receiver when gps is turn on/off?

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This is useful when user want to trigger any action on turn On/Off location provides You should add this action in manifest <action android:name=”android.location.PROVIDERS_CHANGED” /> and after add this action you can trigger your broadcast receiver <receiver android:name=”.GpsLocationReceiver”> <intent-filter> <action android:name=”android.location.PROVIDERS_CHANGED” /> <category android:name=”android.intent.category.DEFAULT” /> </intent-filter> </receiver> And in your BroadcastReceiver class you have to … Read more

using getWindowManager() inside BroadcastReceiver

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Simple code you only need context DisplayMetrics metrics = new DisplayMetrics(); WindowManager windowManager = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); windowManager.getDefaultDisplay().getMetrics(metrics); More info go to documentation Or you can use this one context.getResources().getDisplayMetrics() but read documentation Return the current display metrics that are in effect for this resource object. The returned object should be treated as read-only.

startActivity() from BroadcastReceiver

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If your goal is that you want NightClock to be started whenever an ACTION_POWER_CONNECTED broadcast is sent, your approach of using a BroadcastReceiver is fine. However, do not register it from an activity. Rather, register it in the manifest: <receiver android:name=”.OnPowerReceiver”> <intent-filter> <action android:name=”android.intent.action.ACTION_POWER_CONNECTED” /> </intent-filter> </receiver> Then, have your BroadcastReceiver as a public Java … Read more

Widget onUpdate called when Configuration Activity is launched

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Providing an answer after digging into the source code: 1) This is expected behavior see here This method is also called when the user adds the App Widget 2) Seems you have found your own answer. For others looking for the docs go here Note: Updates requested with updatePeriodMillis will not be delivered more than … Read more

How to unregister BroadcastReceiver

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Edit: For an Activity: In order to register your broadcast receiver from within your app, first, remove the <receiver> tag from your AndroidManifest.xml file. Then, call registerReceiver(BroadcastReceiver receiver, IntentFilter filter) in your onResume(). Use unregisterReceiver(BroadcastReceiver receiver) in your onPause() to unregister the Broadcast receiver. For a Service: Remove the receiver tag from the manifest file. … Read more

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