I have an alarm broadcast receiver where I want to check if my app is completely closed, which means app is neither running in foreground nor background.
Can anyone tells me how can I check this ?
You can create a service and overwrite the onTaskRemoved() method
From the Documentation
the user has removed a task means swiping the app out from the task
list. Stopping the Service from the phone's settings does not trigger
Service.onTaskRemoved().
Code:
public class AppStopped extends Service {
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d("Service", "Service Started");
return START_NOT_STICKY;
}
#Override
public void onDestroy() {
super.onDestroy();
Log.d("Service", "Service Destroyed");
}
#Override
public void onTaskRemoved(Intent rootIntent) {
Log.e("Service", "END");
Toast.makeText(getApplicationContext(), "App Stopped", Toast.LENGTH_SHORT).show();
//Code here
stopSelf();
}
}
In Manifest:
<service android:name="com.example.AppStopped"
android:stopWithTask="false" />
Start the service in your activity like:
startService(new Intent(getBaseContext(), AppStopped.class));
In your Application class:
public class MyApplication extends Application {
#Override
public void onTerminate() {
super.onTerminate();
// your app is closed
}
}
Related
I created an app that reads books to the user.
The user needs to be able to continue reading
from the same position as he was in a previous app session.
How do i do something like that, if a process kill can occur anytime?
you can create here a service class in your app like this and create an api with your backend too :-
Service Class OnClearFromRecentService.class:-
public class OnClearFromRecentService extends Service {
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_NOT_STICKY;
}
#Override
public void onDestroy() {
super.onDestroy();
}
#Override
public void onTaskRemoved(Intent rootIntent) {
callApi();
stopSelf();
}
public void callApi(){
//set your api here
}
}
and set this service class in your manifeast :-
<service
android:name=".halper.OnClearFromRecentService"
android:stopWithTask="false" />
and start this service when your video is play :-
OnClearFromRecentService onClearFromRecentService = new OnClearFromRecentService();
or stop your service where your you need to stop service like this:-
onClearFromRecentService.onTaskRemoved(new Intent(LandingScreen.this, OnClearFromRecentService.class));
So I have code that I want called when my application is closed. Not just when it is sent to the background or the surface is destroyed. How do I do this? Is there a method that I can override in a SurfaceView or Activity class?
New Edit - current BackgroundService class:
public class BackgroundService extends Service {
private String savedString;
public void onCreate() {
System.out.println("Service created");
super.onCreate();
}
public int onStartCommand(Intent intent, int flags, int startId) {
System.out.println("start command: ");
savedString = intent.getStringExtra("myString);
return super.onStartCommand(intent, flags, startId);
}
public IBinder onBind(Intent intent) {
return null;
}
public void onTaskRemoved(Intent rootIntent) {
System.out.println("the saved string was: " + savedString);
super.onTaskRemoved(rootIntent);
}
public void onDestroy() {
System.out.println("destroyed service");
super.onDestroy();
}
}
Where I then have this in my other class:
Intent serviceIntent = new Intent(activity.getApplicationContext(), BackgroundService.class);
serviceIntent.putExtra("myString", "this is my saved string");
activity.startService(serviceIntent);
you need to add a background service
public class BackgroundServices extends Service
{
#Override
public void onCreate() {
Toast.makeText(this, "start", Toast.LENGTH_SHORT).show();
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onDestroy() {
super.onDestroy();
}
}
then in your activity. where you want to trigger this service
use
startService(new Intent(getBaseContext(), BackgroundServices.class));
in your case it will be call on onDestory function of that activity
Yes when the process is terminated
That is not possible in general. Nothing in your app is called when the process is terminated.
For example when you open the running apps screen, and swipe away the app to stop it from running
That is a task removal. It may result in your process being terminated, and there are many ways in which your process can be terminated that has nothing to do with task removal.
To detect task removal, override onTaskRemoved() in a Service.
How Whatsapp service keep working in background in huawei phones ?
I removed whatsapp of protected apps but Whatsapp service not closed in screen
off time.
I'm writing critical app that need to run every time but my service killed in screen off.
I want to write service like Whatsapp or AirDroid service
anyone can explain about that ?
I mean how to write service that specially not close by screen off in HUAWEI phones
This is my service code
AppLifeService
public class AppLifeService extends Service {
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
startForeground(5, AppLifeReciever.createNotification(this));
return START_STICKY;
}
#Override
public void onDestroy() {
//startService(new Intent(this, AppLifeService.class)); Updated : not need
super.onDestroy();
}
}
You need to create a Service to "reopen" BroadcastService automatically when it's closed.
For example:
BroadcastService
public class MyBroadcastService extends BroadcastReceiver
{
#Override
public void onReceive(final Context context, Intent intent)
{
//do something
}
}
Service to "reopen" automatically
public class MyService extends Service
{
#Override
public void onCreate()
{
// Handler will get associated with the current thread,
// which is the main thread.
super.onCreate();
ctx = this;
}
#Override
public IBinder onBind(Intent arg0)
{
// TODO Auto-generated method stub
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId)
{
Log.i(TAG, "onStartCommand");
//Toast.makeText(this, "onStartCommand", Toast.LENGTH_LONG).show();
return START_STICKY;
}
//launch when its closed
#Override
public void onDestroy()
{
super.onDestroy();
sendBroadcast(new Intent("YouWillNeverKillMe"));
Toast.makeText(this, "YouWillNeverKillMe TOAST!!", Toast.LENGTH_LONG).show();
}
}
Declare on your AndroidManifest.XML
<receiver android:name=".BroadcastServicesBackground.MyBroadcastService">
<intent-filter>
<!--That name (YouWillNeverKillMe) you wrote on Myservice-->
<action android:name="YouWillNeverKillMe"/>
<data android:scheme="package"/>
</intent-filter>
<intent-filter>
<!--To launch on device boot-->
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
<service android:name=".Services.MyService"/>
Service with START_STICKY in retrun onStartCommand() will start again automatically you dont need to start it again in onDestroy()
#Override
public void onDestroy() {
// startService(new Intent(this, AppLifeService.class));
super.onDestroy();
}
#Sohail Zahid Answer tells you a way to repeatedly start a service again and again when stopped. But in order to keep a service alive like playing a song in a background.
The best Approach I found is
startForeground(int, Notification)
where int value must be unique for every notification
You'll need to supply a Notification to the method which is displayed in the Notifications Bar in the Ongoing section. In this way the app will keep alive in background without any interuption.
For a demo I print a Toast after Evert 10 sec. using Service class.
It works fine, I'm getting the Toast after every 10 sec if I am on the Activity when I leave the app, Service is not giving the o/p.
But I want to that toast either I'll kill the App or back press Here is code snippet :
ServiceDemo.java
public class ServiceDemo extends Activity {
private Handler myHandler = new Handler();
private Runnable drawRunnable = new Runnable() {
#Override
public void run() {
as();
myHandler.postDelayed(this, 10000);
}
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_service_demo);
myHandler.postDelayed(drawRunnable, 10000);
startService(new Intent(this, MyService.class));
}
public void as(){
startService(new Intent(this, MyService.class));
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
}
}
Service.java
public class MyService extends Service {
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
Toast.makeText(this, "HOHO Service Created...", Toast.LENGTH_LONG).show();
}
#Override
public void onDestroy() {
}
#Override
public void onStart(Intent intent, int startid) {
Toast.makeText(this, "Service Started...", Toast.LENGTH_LONG).show();
}
}
Edit 1
moveTaskToBack(true);
I put this into the onBackPressed method I Service give the o/p if I am not on the screen but When I kill the App, Service not responding
I think you need to override onStartCommand instead of onStart()
like:
public int onStartCommand(Intent intent, int flags, int startid)
{
Toast.makeText(this, "Service Started...", Toast.LENGTH_LONG).show();
return Service.START_STICKY;
}
i think AlarmManager is what you want.
You have to user AlarmManager, here's an example : Alarm Manager Example
Your task will be executed even if the application is terminated.
But if the application is killed by the user, the Alarm will be canceled. See this discussion How to create a persistent AlarmManager
I write this code in the onDestroy() method.
#Override
public void onDestroy()
{
MessageService.this.stopSelf();
messageThread.isRunning = false;
System.exit(0);
super.onDestroy();
}
And close the service in other Activity.
stopService(new Intent(MainOptionActivity.this,MessageService.class));
I tried many code, it can not close the service when close the background. Could anyone give me some advice? Thanks.
Here is a simple code for service class
public class MyService extends Service {
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
Toast.makeText(getApplicationContext(), "MSG onCreate SERVICE", Toast.LENGTH_LONG).show();
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(getApplicationContext(), "MSG onStartCommand SERVICE", Toast.LENGTH_LONG).show();
return super.onStartCommand(intent, flags, startId);
}
#Override
public void onDestroy() {
Toast.makeText(getApplicationContext(), "MSG STOP SERVICE", Toast.LENGTH_LONG).show();
super.onDestroy();
}
}
and here is the code for testing this service
startService(new Intent(this, MyService.class));
new Timer().schedule(new TimerTask() {
#Override
public void run() {
startService(new Intent(getApplicationContext(), MyService.class));
}
}, 5000);
new Timer().schedule(new TimerTask() {
#Override
public void run() {
stopService(new Intent(getApplicationContext(), MyService.class));
}
}, 10000);
this is working just fine. Also add this code in manifest
<service android:name=".MyService" />
Don't use System.exit(0) on Android, instead use finish (in Activity for example).
But there is no need to stop itself onDestroy method, it is actually gonna be stopped and destroyed (that's what onDestroy method is for).
You stop the execution of the method with System.exit(0); and therefore system never reaches super.onDestroy(); point and service is not destroyed.
Try just
#Override
public void onDestroy() {
messageThread.isRunning = false;
super.onDestroy();
}