startActivity(intent): Is there any way to know if the application will be resumed or restarted?

Question

I am using startActivity(intent) to start an application. I need to know whether the application will be resumed form background or will it be restarted (i.e. it is not in background), before launching the application.

Before Lollipop, I used to get the list of recent tasks and check if it has an application with matching package name.
But in Lollipop I cannot use getRecentTask, so this won't help.

Just for trial, I have also tried:

originalIntent = context.getPackageManager().getLaunchIntentForPackage(packageName);

if(originalIntent != null){
    mainActivityIntent = context.getPackageManager().getLaunchIntentForPackage(packageName);
    mainActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
    if(originalIntent.equals(mainActivityIntent))
        Log.d("temp", "New Task");
    else
        Log.d("temp", "Background Task");
}

without any success.

What can be done?

Note: The other application I am switching to can be any other application installed on the phone and not necessary my application.

Is the second app your own application? You can in second app send intent, and receive it in first app using broadcast receiver. — Unmerciful, Dec 23 '14 at 08:14
Did you try http://stackoverflow.com/questions/24590533/how-to-get-recent-tasks-on-android-l — Pankaj Kumar, Dec 23 '14 at 08:21

score 1 · Answer 1 · answered Dec 23 '14 at 08:05

Use onRestart and onResume method

@Override
    protected void onRestart() {
        // TODO Auto-generated method stub
        super.onRestart();

    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();

    }

score 1 · Answer 2 · answered Dec 23 '14 at 08:07

When is restarted activity (not in exec) always execute onCreate, when come from background not.

In onCreate method set a variable:

isNewLaunch = true;

And check it in onResume:

if(isNewLaunch) {

} else {

}

Set a false in onPause or onStop

isNewLaunch = false;

startActivity(intent): Is there any way to know if the application will be resumed or restarted?

2 Answers2