Redirect to particular Activity when launching app from recents

Question

Assume you are in Activity A and press home button now your app will goto background. Now long press your home button and you can see recent's app. If I click my app it should take to particular activity not Activity A.

Answer 1

With reference of this post - How can I detect user pressing HOME key in my activity? have implemented below logic.

Detect Home button press by using above post and store a flag in preferences. While launching app from Recent's list by first OnRestart() method will be fired so check home button pressed flag and launch particular activity.

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        if (isApplicationSentToBackground(this)) {
            // Do what you want to do on detecting Home Key being Pressed
             preferences.setHomeButtonPressed(true);
        }

    }

    @Override
    protected void onRestart() {
        super.onRestart();
    // Do what you want to do on detecting app launching from recents section
        if (preferences.isHomeButtonPressed()) {
            Intent i = new Intent(this,
                    ParticularActivity.class);
            startActivity(i);
            preferences.setHomeButtonPressed(false);
        }

    }

    public static boolean isApplicationSentToBackground(final Context context) {
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
        if (!tasks.isEmpty()) {
            ComponentName topActivity = tasks.get(0).topActivity;
            if (!topActivity.getPackageName().equals(context.getPackageName())) {
                return true;
            }
        }
        return false;
    }