This might be late but I hope it helps someone.
I was stuck on the same problem for so long. But now I konw how to solve this problem. This is for anyone who might have the same problem.
People keep saying that you have to enable AutoStart but I managed to it with out using auto start.
First of all, WakeFullBroadcastaReceiver is now deprecated and you should use BroadcastReceiver.
Second of all, you have to use the ForegroudService instead of BackgroundService.
I will give you the example in the following:
IntentService.class
public class NotificationService extends IntentService {
//In order to send notification when the app is close
//we use a foreground service, background service doesn't do the work.
public NotificationService() {
super("NotificationService");
}
@Override
public void onCreate() {
super.onCreate();
}
@Override
public int onStartCommand(@Nullable Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
//There is no difference in the result between start_sticky or start_not_sticky at the moment
return START_NOT_STICKY;
}
@Override
protected void onHandleIntent(@Nullable Intent intent) {
//TODO check if the app is in foreground or not, we can use activity lifecyclecallbacks for this
startForegroundServiceT();
sendNotification(intent);
stopSelf();
}
/***
* you have to show the notification to the user when running foreground service
* otherwise it will throw an exception
*/
private void startForegroundServiceT(){
if (Build.VERSION.SDK_INT >= 26) {
String CHANNEL_ID = "my_channel_01";
NotificationChannel channel = new NotificationChannel(CHANNEL_ID,
"Channel human readable title",
NotificationManager.IMPORTANCE_DEFAULT);
((NotificationManager)
getSystemService(Context.NOTIFICATION_SERVICE)).createNotificationChannel(channel);
Notification notification = new Notification.Builder(this, CHANNEL_ID)
.setContentTitle("")
.setContentText("").build();
startForeground(1, notification);
}
}
private void sendNotification(Intent intent){
//Send notification
//Use notification channle for android O+
}
}
start the foreground service in BroadcastReceiver.class
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context, NotificationService.class);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
context.startForegroundService(service);
} else {
context.startService(service);
}
}
}
And the setAlarms like this:
public static void setAlarm(Context context, int requestCode, int hour, int minute){
AlarmManager alarmManager =( AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(context//same activity should be used when canceling the alarm
, AlarmReceiver.class);
intent.setAction("android.intent.action.NOTIFY");
//setting FLAG_CANCEL_CURRENT makes some problems. and doest allow the cancelAlarm to work properly
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 1001, intent, 0);
Calendar time = getTime(hour, minute);
//set Alarm for different API levels
if (Build.VERSION.SDK_INT >= 23){
alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,time.getTimeInMillis(),pendingIntent);
}
else{
alarmManager.set(AlarmManager.RTC_WAKEUP,time.getTimeInMillis(),pendingIntent);
}
Then you have to declare the receiver and the foregroundservice in the manifest.
<receiver android:name=".AlarmReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.NOTIFY">
</action>
</intent-filter>
</receiver>
<service
android:name=".NotificationService"
android:enabled="true"
android:exported="true"></service>
I hope this helps some one.
