How to know in BroadcastReceiver if App is running on foreground?

Try this way hope this works for you

public class MyBroadcastReceiver extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        if (isAppForground(context)) {            // App is in Foreground        } else {            // App is in Background        }    }    public boolean isAppForground(Context mContext) {        ActivityManager am = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);        List<RunningTaskInfo> tasks = am.getRunningTasks(1);        if (!tasks.isEmpty()) {            ComponentName topActivity = tasks.get(0).topActivity;            if (!topActivity.getPackageName().equals(mContext.getPackageName())) {                return false;            }        }        return true;    }}

Add this permission

<uses-permission android:name="android.permission.GET_TASKS" />

What do you mean by "the application is running in foreground"?

If you mean there is an Activity currently displayed on the screen, then the easiest way would be to make a base Activity class that sets a global boolean in your `Application' class.

Custom Application class:

public class MyApp extends Application{    public boolean isInForeground = false;}

Custom base Activity class:

abstract public class ABaseActivity extends Activity{    @Override    protected void onResume()    {        super.onResume();        ((MyApp)getApplication()).isInForeground = true;    }    @Override    protected void onPause()    {        super.onPause();        ((MyApp)getApplication()).isInForeground = false;    }}

I assume you are not synchronising from your BroadcastReceiver - you should instead be launching a Service to do the synchronisation. Otherwise the system might kill your app - you must not be doing any long-running tasks in a BroadcastReceiver.

So before you launch your sync service, check the application boolean to see if your app is "in foreground". Alternatively, move the check inside the sync service, which has the advantage of making the BroadcastReceiver even simpler (I am always in favour of trying to make the receivers have as little logic as possible).

This method has the advantages that it is simple to use, understand, and requires no extra permissions.

in case you don't want to do anything if app in foreground you could simply turn off the receiver on your activity onStart method:

ComponentName receiver = new ComponentName(context, MyReceiver.class);context.getPackageManager().setComponentEnabledSetting(receiver,        PackageManager.COMPONENT_ENABLED_STATE_DISABLED,        PackageManager.DONT_KILL_APP);

and you could turn it on onStop method:

ComponentName receiver = new ComponentName(context, MyReceiver.class);context.getPackageManager().setComponentEnabledSetting(receiver,        PackageManager.COMPONENT_ENABLED_STATE_ENABLED,        PackageManager.DONT_KILL_APP);

and if receiver is turned off, no alarms will come to it, and your code will not be executed