I am creating one app In which I want to check status of activity like activity is in foreground or in background.this is working perfect from code but I want to bring activity to foreground when it is in background for that I am using service so when activity is going to background state I am calling that service and from that service I am launching activity but service is working ok upto version 10 after that same code of intent is not working.
This is my code.
MainActivity.Java
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if(android.os.Build.VERSION.SDK_INT>=29 &&
!Settings.canDrawOverlays(getApplicationContext())) {
MainActivity.this.startActivity(new
Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION));
}
}
This is DigitalApp class which extend application and from this I am calling service.
public class DigitalApp extends Application implements Application.ActivityLifecycleCallbacks
{
private int activityReferences = 0;
private boolean isActivityChangingConfigurations = false;
#Override
public void onCreate() {
super.onCreate();
registerActivityLifecycleCallbacks(this);
}
#Override
public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
}
#Override
public void onActivityStarted(Activity activity) {
if (++activityReferences == 1 && !isActivityChangingConfigurations) {
// App enters foreground
Toast.makeText(this,"App is in foreground with
activity::"+activity.getLocalClassName(),Toast.LENGTH_LONG).show();
Log.d("Tracking Activity Started", activity.getLocalClassName());
Log.d("TAG","App is in foreground");
}
}
#Override
public void onActivityResumed(Activity activity) {
}
#Override
public void onActivityPaused(Activity activity) {
}
#Override
public void onActivityStopped(Activity activity) {
Toast.makeText(this,"App enters background with
activity::"+activity.getLocalClassName(),Toast.LENGTH_LONG).show();
isActivityChangingConfigurations = activity.isChangingConfigurations();
if (--activityReferences == 0 && !isActivityChangingConfigurations) {
// App enters background
Log.d("Tracking Activity Stopped", activity.getLocalClassName());
Log.d("TAG","App enters background");
Intent i= null;
getApplicationContext().startService(new
Intent(getApplicationContext(),service.class));
}
}
#Override
public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
}
#Override
public void onActivityDestroyed(Activity activity) {
}
}
This is Service class.
#Override
public void onCreate() {
super.onCreate();
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
Toast.makeText(getApplicationContext(), "IN HANDLER OF SERVICE",
Toast.LENGTH_LONG).show();
Intent i = new Intent(getApplicationContext(), MainActivity.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
getApplicationContext().startActivity(i);
}, 3000);
}
I am passing intent in handler to launch activity when it is going to background state.handler is in oncreate method of service.I want launch activity from there again after it is going to background state.
I am using flag new task but with this flag activity is not launching will I add other flags?
from the onStop() of your activity start the service like this-
fun launchService(){
val serviceIntent = Intent(this, LaunchAppService::class.java)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
startForegroundService(serviceIntent)
}else{
startService(serviceIntent)
}
}
and show notification for foreground service like this
Related
I have two activities, A(Login) and B(DashBoard), i create notification for specific times and if the user is already in activity B, then on clicking on the notification nothing should happen and if Application is closed or not opened, on clicking on notification Activity A needs to be opened. how can this be achieved.TIA
i tried the following in braodcastreceiver
#Override
public void onReceive(Context context, Intent intent) {
Log.e("NotificationReceiver","NotificationReceiver");
if(ActivityB.instance!=null){
}else{
Intent i = new Intent();
i.setClassName("com.test","com.test.ActivityA");
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
}
But when my application not opened or closed, else is not executing.
Keep a track of activities in your application class using activityLifeCycleCallbacks
public class MyApplication extends Application implements my.package.ActivityLifecycleCallbacks{
#Override
public void onCreate() {
super.onCreate();
registerActivityLifecycleCallbacks(this);
}
#Override
public void onActivityStopped(Activity activity) {
Log.i("Tracking Activity Stopped", activity.getLocalClassName());
}
#Override
public void onActivityStarted(Activity activity) {
Log.i("Tracking Activity Started", activity.getLocalClassName());
}
#Override
public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
Log.i("Tracking Activity SaveInstanceState", activity.getLocalClassName());
}
#Override
public void onActivityResumed(Activity activity) {
Log.i("Tracking Activity Resumed", activity.getLocalClassName());
}
#Override
public void onActivityPaused(Activity activity) {
Log.i("Tracking Activity Paused", activity.getLocalClassName());
}
#Override
public void onActivityDestroyed(Activity activity) {
Log.i("Tracking Activity Destroyed", activity.getLocalClassName());
}
#Override
public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
Log.i("Tracking Activity Created", activity.getLocalClassName());
}
}
Next receive onClick of the notification in a broadcast, check if activityB is opened from your application class and make a decision
I have an application where I'm using GCM and I want to receive notifications only when app is closed, but when it's foreground don't receive them.
So is there some functionality to disable GcmListenerService for a while?
You do this wrong way. It is irrelevant really when your app will receive GCM message. In your case it's more important when it react to it. So instead of disabling your application component, I'd simply put some logic that would either ignore messages under certain conditions (like it's in foreground) or handle them differently in that case. That, for me, looks like better way than turning your app completely deaf.
You will have to track if your app is in foreground / background using Activity Life cycle callback.
public class SampleApplication extends Application
{
private static int sRunningActivityCount = 0;
#Override
public void onCreate()
{
super.onCreate();
registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks(){
#Override
public void onActivityCreated(Activity activity, Bundle savedInstanceState)
{
}
#Override
public void onActivityStarted(Activity activity)
{
sRunningActivityCount++;
}
#Override
public void onActivityResumed(Activity activity)
{
}
#Override
public void onActivityPaused(Activity activity)
{
}
#Override
public void onActivityStopped(Activity activity)
{
sRunningActivityCount--;
}
#Override
public void onActivitySaveInstanceState(Activity activity, Bundle outState)
{
}
#Override
public void onActivityDestroyed(Activity activity)
{
}
});
}
public static boolean isAppBackground()
{
return sRunningActivityCount == 0;
}
public static boolean isAppForeground()
{
return sRunningActivityCount != 0;
}
}
You can use the following to enable/disable receiving GCM notifications:
public void setNotifications(boolean enabled)
{
mPackageManager.setComponentEnabledSetting(new ComponentName(mContext, YourGcmListenerService.class), enabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
: PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
Intent intent = new Intent(mContext, YourGcmListenerService.class);
if (enabled)
{
mContext.startService(intent);
}
else
{
mContext.stopService(intent);
}
}
I have started an Intent activity from a service. Now, how I can stop that intent activity from service itself?
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void startService (View view) {
Intent intent = new Intent(this,MainService.class);
startService(intent);
}
public void stopService (View view) {
Intent intent = new Intent(this,MainService.class);
stopService(intent);
}
}
startService, stopService have buttons associated.
public class MainService extends Service {
#Override
public void onCreate() {
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(this, "Service started",Toast.LENGTH_LONG).show();
Intent dialogIntent = new Intent(this, calledActivity.class);
dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(dialogIntent);
return START_STICKY;
//return super.onStartCommand(intent,flags,startId);
}
#Override
public void onDestroy() {
//super.onDestroy();
Toast.makeText(this, "Service stopped",Toast.LENGTH_LONG).show();
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
//Intent dialogIntent = new Intent(this, MainActivity.class);
//dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//startActivity(dialogIntent);
return null;
}
}
public class calledActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toast.makeText(this, "I am here", Toast.LENGTH_LONG).show();
displayNumber();
}
#Override
protected void onStop() {
super.onStop();
Toast.makeText(this, "I am stopping", Toast.LENGTH_LONG).show();
finish();
}
#Override
protected void onDestroy () {
super.onDestroy();
Toast.makeText(this, "I am being destroyed", Toast.LENGTH_LONG).show();
finish();
}
public void displayNumber () {
TextView tv = (TextView)findViewById(R.id.textView);
Integer counter = 10;
while (counter > 0) {
//tv.setText("Here you go" + String.valueOf(counter));
tv.setText("Here you go" + counter);
counter = counter - 1 ;
Toast.makeText(this, "I am there "+counter, Toast.LENGTH_LONG).show();
}
}
}
When service invokes the intent activity, I think intent activity is on the foreground. Now, whenever I press stop service button, application crashes. I believe as stopService is associated with the service class but not in the intent activity. Is there any way to stop the intent activity from the service?
Service works on UI thread. Try using IntentService. It runs on background thread.
I have a service and an activity that communicate.
When I click the button(I have galaxy s3 there is only one button) then my activity of course disapear and my service is keep running but if I click the back (touch) button then my service is destroyed.
How can I change that?I want the service to keep running untill the activity destroys it.
EDIT
Here is the code:
Service:
public class MyService extends Service
{
private static final String TAG = "BroadcastService";
public static final String BROADCAST_ACTION = "com.websmithing.broadcasttest.displayevent";
private final Handler handler = new Handler();
private Intent intent;
int counter = 0;
#Override
public void onCreate()
{
super.onCreate();
intent = new Intent(BROADCAST_ACTION);
}
#Override
public void onStart(Intent intent, int startId)
{
// handler.removeCallbacks(sendUpdatesToUI);
handler.postDelayed(sendUpdatesToUI, 1000); // 1 second
}
private Runnable sendUpdatesToUI = new Runnable() {
public void run() {
DisplayLoggingInfo();
handler.postDelayed(this, 1000); // 10 seconds
}
};
private void DisplayLoggingInfo() {
intent.putExtra("counter", String.valueOf(++counter));
sendBroadcast(intent);
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onDestroy() {
handler.removeCallbacks(sendUpdatesToUI);
super.onDestroy();
}
}
Activity:
public class MainActivity extends Activity {
private static final String TAG = "BroadcastTest";
private Intent intent;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
intent = new Intent(this, MyService.class);
startService(intent);
registerReceiver(broadcastReceiver, new IntentFilter(MyService.BROADCAST_ACTION));
}
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
updateUI(intent);
}
};
#Override
public void onDestroy() {
super.onPause();
unregisterReceiver(broadcastReceiver);
stopService(intent);
}
private void updateUI(Intent intent)
{
String counter = intent.getStringExtra("counter");
Log.d(TAG, counter);
TextView txtCounter = (TextView) findViewById(R.id.textView1);
txtCounter.setText(counter);
}
}
you can put your app in the background instead off finishing it.
#Override
public void onBackPressed() {
moveTaskToBack(true);
// super.onBackPressed();
}
Ofcourse your service stops, when you press the back button. The back button most calls finish() on the activity, and it is destroyed. When you press the other button (the home button), it just minimizes your app, and it will be only destroyed later, when the OS wants to free up space.
If you want to keep your service running, make it a foreground service, and dont stop it on activity destroy.
Hi friends i have a one problem to solve...I want to destroy the service completely, once i call onDestroy() method from Activity. But my problem is that i am unable to destroy it completely.. in background its keep on running, i am sharing the sample code what i tried..
//Activity Class
public class ServiceToAct extends Activity {
private static final String TAG = "BroadcastEvent";
private Intent intent;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
intent = new Intent(this, BroadcastService.class);
startService(intent);
registerReceiver(broadcastReceiver, new IntentFilter(myService.BROADCAST_ACTION));
}
/*#Override
protected void onResume() {
super.onResume();
}*/
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(broadcastReceiver);
}
#Override
protected void onDestroy() {
stopService(intent);
Toast.makeText(this, "Destroy Completely", Toast.LENGTH_LONG).show();
}
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
}
};
}
// service class
public class myService extends Service {
private static final String TAG = "BroadcastEvent";
public static final String BROADCAST_ACTION = "com.service.activity.myService";
private final Handler handler = new Handler();
Intent intent;
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
Toast.makeText(this, "created", Toast.LENGTH_LONG).show();
intent = new Intent(BROADCAST_ACTION);
}
#Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
Toast.makeText(this, "start", Toast.LENGTH_LONG).show();
handler.removeCallbacks(sendToUI);
handler.postDelayed(sendToUI, 1000);
}
#Override
public void onDestroy() {
super.onDestroy();
stopSelf();
//stopService(intent);
Toast.makeText(this, "Destroy", Toast.LENGTH_LONG).show();
}
private Runnable sendToUI = new Runnable() {
#Override
public void run() {
myData();
handler.postDelayed(this, 10000);
}
};
private void myData() {
Log.d(TAG, "keep on entering");
Toast.makeText(this, "Keep on despling in UI", Toast.LENGTH_LONG).show();
sendBroadcast(intent);
}
}
Here Actually i want to update my UI from service, Mine everything is working, but if i destroy the service its keep on calling myData() method, and i am getting the Toast msg if i close the application also.
My issue is i don't want that toast msg once the service is desroyed
I used stopService(intent) method, which destroy the service, but background method myData() is keep on calling
for stop service completely use this ..
myActivity.java
#Override
public void onDestroy() {
stopService(intent);
super.onDestroy();
Toast.makeText(this, "Destroy", Toast.LENGTH_LONG).show();
}
service.java
#Override
public void onDestroy()
{
stopSelf();
super.onDestroy();
}
You'd better never call onXxx() derectly.
Use stopService(Intent i) in your activity and stopSelf() in you service to stop instead.
use stopService() method after updating UI
or
Instead of using startService use bindService in the activity. When activity destroys, service also destroys