I starting an application from a Wearable Listener, but i don't wanna open the app "visually", keeping it on background. I mean, if the user press the button to see the open apps, he must be able to see this app.
How can i do this? I'm not sure if i'm using the correct terms.
You can use IntentService or Service to run any task in background and even without user's interaction. Here goes a sample Service demo,
public class TestService extends Service {
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
return super.onStartCommand(intent, flags, startId);
}
#Override
public IBinder onBind(Intent arg0) {
return null;
}
}
run the service from a button click,
btnStart.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this, TestService.class);
i.putExtra("name", "SurvivingwithAndroid");
MainActivity.this.startService(i);
}
});
Which give you the output in console,
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));
I am developing App-Locker app and i have background service which is running. But i want the exact solution to trigger one function inside that background service when any application is launch or open in mobile.
I am using the below service which runs continuously.
public class NotificationService extends Service {
public NotificationService() {
}
#Override
public IBinder onBind(Intent intent)
{
Log.e("Noftication serveric ", " Onbinddddd");
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId)
{
super.onStartCommand(intent, flags, startId);
return START_STICKY;
}
#Override
public void onDestroy()
{
super.onDestroy();
//Starting Broadcast on destroy method, where this service is called again to run
Intent restartService = new Intent("RestartService");
sendBroadcast(restartService);
}
public void Trigger_Me_If_Any_App_Launch()
{
//This function should be called if any app launch
}
}
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.
I have two applications. One run service and second is only small app. I want to put some data to service in first app, but I want to get this data in second app. How can I do that? I need that because when I use home button on second app and return I need check if id was changed. I think about run service with id in first app and second app when onResume check that id.
This is code service class:
public class ServiceId extends Service{
private int id;
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onCreate() {
}
#Override
public void onDestroy() {
}
#Override
public void onStart(Intent intent, int startid) {
id = MainActivity.getApplicationId();
Log.v("Start", "Webservice started");
}
}
I start service in mainactivity:
startService(new Intent(MainActivity.this, ServiceId.class));
how get that id in other application?