I have a service that create a notification when it is started.
And then ondestroy() i want it to be removed.
I just use .cancel(NOTIFICATION_ID);
It works great when it is a normal notification but when i am using ongoing event it just won't cancel it.
I did read something about that services doesn't stop if android have the resources for it, but how to overcome this?
I use this code to start the service
final Intent bg_service = new Intent(BackgroundService.class.getName());
btn_start = (Button)findViewById(R.id.btn_start);
btn_stop = (Button)findViewById(R.id.btn_stop);
btn_start.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
startService(bg_service);
}
});
btn_stop.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
stopService(bg_service);
}
});
I use this in on create
notificationManager = (NotificationManager)
getSystemService(NOTIFICATION_SERVICE);
Notification notification = new Notification(R.drawable.ic_launcher,
"A new notification", System.currentTimeMillis());
notification.flags |= Notification.FLAG_FOREGROUND_SERVICE;
Intent intent = new Intent(this, mainapp.class);
PendingIntent activity = PendingIntent.getActivity(this, 0, intent, 0);
notification.setLatestEventInfo(this, "...",
"...", activity);
notificationManager.notify(19314, notification);
And this in on destroy
noficationManager.cancel(19314);
I would look at doing 'ongoing' notifications a bit differently if you can. There are methods that live on Service that are dedicated to adding and removing an 'ongoing' notification.
Service.startForeground(int, Notification)
Service.stopForeground(boolean)
Perhaps you could just try calling stopForegroud(boolean) from your onDestroy() method first...
Related
i want to ask about FCM. I have an FCM service that is running as it should this is my code
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, "ch1")
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(getString(R.string.app_name))
.setContentText(remoteMessage.getNotification().getBody())
.setAutoCancel(true)
.setContentIntent(pendingIntent);
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
notificationBuilder.setDefaults(Notification.DEFAULT_VIBRATE);
NotificationChannel channel = new NotificationChannel("ch1",
getString(R.string.app_name), NotificationManager.IMPORTANCE_HIGH);
channel.enableLights(true);
channel.enableVibration(true);
mNotificationManager.createNotificationChannel(channel);
}
mNotificationManager.notify(0, notificationBuilder.build());
but i want to disable this notification on spesific activity, for example i have ChatActivity. where if i get notificatin on this activity, the fcm service is not showing a notification. I have tried implement this code but still not work
if(!(this.getApplicationContext() instanceof ChatActivity)){
//build the notification
}
anyone have solution for my problem? thank you.
First of all keep a flag in your SharedPreferences for ChatActivity to know if it's open or not.
Now inside ChatActivity set this flag true in onResume() and false in onStop(). Like this:
#Override
protected void onResume() {
super.onResume();
AppPreferences.getInstance().setBoolean("IS_CHAT_ACTIVITY", true);
}
#Override
protected void onStop() {
super.onStop();
AppPreferences.getInstance().setBoolean("IS_CHAT_ACTIVITY", true);
}
If you don't know anything about SharedPreferences check This Tutorial.
Now in your FCM Service class, you have onMessageReceived() callback, which is triggered every time a notification comes.
Now Do this in your onMessageReceived() callback:
#Override
public void onMessageReceived(RemoteMessage remoteMessage) {
if(remoteMessage.getNotification() != null) {
if (AppPreferences.getInstance().getBoolean("IS_CHAT_ACTIVITY", false)) {
//Do Nothing, Ignore Notification
} else {
//Write code to show notification here
//Show Notification
generateNotification(remoteMessage.getNotification());
}
}
}
That's it, that's how you can prevent the notification while you’re on ChatActivity.
I want to create an app that is constantly checking for location change and put the current location in the firebase (e.g. an app for runners).
Unfortunately the foregroundservice is being stopped or paused every time the device go into sleep mode.
For starters I wanted to create a foreground service that is continuously writing information to the base (that would be a time stamp or a simple string) every second.
After some time it just stops writing to firebase without calling stopself().
The service is working fine on the emulator (even if put to sleep), but stops when tested on a real device – in my case Huawei, Android 8.1.0.
What should I do to force service to run in every state of the device?
My MainActivity:
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
Intent intent = new Intent(this, MyService.class);
intent.putExtra("action", "start");
startForegroundService(intent);
}
else {
Intent intent = new Intent(this, MyService.class);
intent.putExtra("action", "start");
startService(intent);
}
}
#Override
protected void onDestroy() {
super.onDestroy();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
Intent intent = new Intent(this, MyService.class);
intent.putExtra("action", "stop");
startForegroundService(intent);
}
else {
Intent intent = new Intent(this, MyService.class);
intent.putExtra("action", "stop");
startService(intent);
}
}
}
MyService:
public class MyService extends Service {
int i =0;
private String CHANNEL_ID = "2345";
#Override
public void onCreate() {
super.onCreate();
}
public MyService() {
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
startForeground(1000, createNotification());
String action = intent.getExtras().getString("action");
switch (action){
case "start":
final Handler handler = new Handler();
Runnable runnable = new Runnable() {
#Override
public void run() {
myfunction();
handler.postDelayed(this, 1000);
}
};
break;
case "stop":
stopfunction();
break;
}
handler.postDelayed(runnable, 1000);
return START_NOT_STICKY;
}
private void stopfunction() {
stopSelf();
}
private void myfunction() {
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("locations");
myRef.child("location").setValue(i);
i++;
}
#Override
public IBinder onBind(Intent intent) {
// TODO: Return the communication channel to the service.
return null;
}
#RequiresApi(Build.VERSION_CODES.O)
private void createChannel(){
NotificationManager notificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, getString(R.string.infoTxt),
NotificationManager.IMPORTANCE_HIGH);
channel.setShowBadge(false);
channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
notificationManager.createNotificationChannel(channel);
}
private Notification createNotification(){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
createChannel();
}
Intent notificationItent = new Intent(this, MainActivity.class);
notificationItent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(this, 0, notificationItent, 0);
return new NotificationCompat.Builder(this, CHANNEL_ID)
.setColor(ContextCompat.getColor(this, android.R.color.background_dark))
.setContentIntent(intent)
.setSmallIcon(R.drawable.ic_launcher_background)
.setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
.setOnlyAlertOnce(true)
.setContentTitle("GPS Location")
.build();
}
}
I've tried everything: service, foreground service, broadcast receiver, jobSheduler, WorkerManager – nothing helped. Then I found it’s a new HUAWEI feature called “power-intensive app monitor “. It kills every app that runs in the background for a long time unless user gives special permissions to it.
The path to do this:
Settings -> Security & privacy -> Location services -> recent location requests: YOUR APP NAME -> Battery -> uncheck Power-intensive prompt, App launch: Manage manually: check all three positions: Auto-launch, secondary launch, run in background.
I don’t know is there a way to do this programmatically. I think the best way is to create a sort of help activity and explain the user what to do if application won’t work.
Foreground services generally should be used for task which require user attention such as visual processes.
use Background service instead
I want a method to be executed when I press a button on my notification. For that purpose I am adding an action with a PendingIntent to my notification:
Intent intent = new Intent(context, AlertActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
Notification notification = new Notification.Builder(MainActivity.this)
.setContentTitle("New Notification")
.setContentText("Click Here")
.setSmallIcon(R.mipmap.ic_launcher)
.setContentIntent(pendingIntent)
.addAction(R.mipmap.ic_launcher, "Test2", pendingIntent)
.build();
notification.flags |= Notification.FLAG_AUTO_CANCEL;
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
manager.notify(0, notification);
That works, however I don't want to start an Activity when the user invokes the action. I just need to do some work.
For that purpose I implemented a Service which should be targeted by the PendingIntent instead:
public class MyServices extends IntentService {
public MyServices() {
super("MyServices");
}
#Override
protected void onHandleIntent(Intent intent) {
clearNotification();
}
public void clearNotification() {
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notificationManager.cancel(0);
Intent intent = new Intent(MyServices.this, MainActivity.class);
//Starting new activity just to check
startActivity(intent);
}
}
I create the PendingIntent like this:
final Intent intent = new Intent(context, MyServices.class);
final PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
However when I invoke the action on my notification nothing happens. What am I doing wrong?
A Notification is not part of your application. It is managed by the OS. It just so happens that there are APIs you can use to show/cancel/etc notifications.
A pending intent allows for external code (Notifications for example) to launch your app/activity/service/broadcastreceiver. This cannot be done without a pending intent.
What my task is to execute some piece of code when a specific action button is clicked, and clear notification; without starting any activity
You don't have to start an activity. You can do it in a broadcastreceiver that has no UI. Or, as CommonsWare suggested, use an IntentService, depending on what what you are doing in your "piece of code". IntentServices handle work in a separate thread.
I have this object:
public void timerDistraction(final View view) {
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
//Do something after time
Toast.makeText(getApplicationContext(),
"Button is clicked", Toast.LENGTH_LONG).show();
Notification notification = new Notification.Builder(this)
.setContentTitle("Basic Notification")
.setContentText("This is my example of basic notification")
.setSmallIcon(R.drawable.ic_launcher).build();
notification.flags |= Notification.FLAG_AUTO_CANCEL;
NotificationManager notificationManager = getNotificationManager();
notificationManager.notify(0, notification);
Uri notificationSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notificationSound);
r.play();
}
}, 5000);
And the line
Notification notification = new Notification.Builder(this)
Has an error, presumably because of the (this)
Can anyone point me in the right direction. I've tried changing it to the function or null, but no progress. If I have just the notification code itself, without the delay, it works.
When you are in the Runnable, this became the Runnable and not the context of your Activity. Since you must pass a context as parameter, it triggers an error. To get the correct context, you can use the same way as the one you used for the Toast:
Notification notification = new Notification.Builder(getApplicationContext());
In this case, you will effectively pass your Activity context and not your Runnable.
I am loading an HTTP request in the background using loopj HTTP CLIENT and when it is done, I want to display a "success" notification (dialog, toast, etc.)
I have the code in a seperate (non-activity) class with a static method that executes the background request. In the end, the response is in a AsyncHttpResponseHandler under a onSuccess method. In this method, I can print out the response, confirm that the request went through, save data to the sd card/ Shared Preferences, but how do I access the UI thread to display a notification?
Thanks in advance.
you can do it using a Handler, or by calling Activity.runOnUiThread(). so you either pass a Handler, or an Activity object to your static method, then in your onSuccess() method, do,
activity.runOnUiThread(new Runnable() {
#Override
public void run() {
// i'm on the UI thread!
}
}
);
or,
handler.post(new Runnable() {
#Override
public void run() {
// i'm on the UI thread!
}
}
);
I guess you mean a service as a background process. Service has many built in methods like onCreate, onStartCommand, onDestroy, etc. I suggest using a Notification, because notifications do not require a UI thread to do the job.
Create a method to generate a notification and call it after your HTML read is over.
private static void generateNotification(Context context, String message) {
int icon = R.drawable.ic_stat_gcm;
long when = System.currentTimeMillis();
NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(icon, message, when);
String title = context.getString(R.string.app_name);
Intent notificationIntent = new Intent(context, MainActivity.class);
// set intent so it does not start a new activity
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
notification.setLatestEventInfo(context, title, message, intent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(0, notification);
}
You could fire a local broadcast with the message, and show a toast with a receiver.
Do this in the class doing the updates:
Intent intent = new Intent("ACTION_TOAST");
intent.putExtra("message", "Success!");
LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
Then in any activity that might want to know about the update, do this:
BroadcastReceiver receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if ("ACTION_TOAST".equals(intent.getAction()) {
Toast.makeText(MyActivity.this, intent.getStringExtra("message"),
Toast.LENGTH_SHORT).show();
}
}
}
#Override
protected void onStart() {
super.onStart();
LocalBroadcastManager.getInstance(this).registerReceiver(
receiver, new IntentFilter("ACTION_TOAST"));
}
#Override
protected void onStop() {
LocalBroadcastManager.getInstance(this).unregisterReceiver(receiver);
}
You still need to pass a context into your static method, but this works even if that context is a Service or some other context that can't show Toasts / create UI.