Android Home key press behavior | Activity stack confused when launching app

Hello Droid Guys

I found an strange issue with the behavior of Home key press in android.Please

check below link if you want more details about this issue.

https://code.google.com/p/android/issues/detail?id=26658

Actually, I think this is an android bug. If an app is installed via market, market 

update, or download from browser and the user launches the app directly from the

installer (ie: when the installer completes it offers the user the options to launch(open)

and done and when use select open the app now) it is launched in such a way that 

the OS gets confused.

If, after the app is launched, the user presses the HOME key to return to the home 

screen and then tries to return to the app by selecting it from the list of applications 

(or by putting a shortcut on the home screen and then selecting the shortcut), the OS

launches the root activity of the app AGAIN, bringing the existing task to the foreground

and placing ANOTHER instance of the root activity on top of the existing activity stack.

This behavior is extremely difficult to debug and has certainly caused countless hours 

of head-scratching by developers.

Note: I too found the same issue when I install an app from my mail and directly launch

the app.Go to Activity "A" then goes to Activity "B" and then I pressed "Home button".

Then ,When I open the same app pressing the app launcher on home screen,Instead of 

taking me directly to Activity "B" where I left it last time , It loads the app from the start.

It takes lots of my time to fixed this issue but finally I did that. I found the

way to resolve this problme :) .
I Added following code in the onCreate() method of my launcher activity and then Its

works fine for me.

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);

if (!isTaskRoot()) {
           Intent intent = getIntent();
           String action = intent.getAction();
           if (intent.hasCategory(Intent.CATEGORY_LAUNCHER) && action != null &&                           action.equals(Intent.ACTION_MAIN)) {
               finish();
               return;
           }
    }
}

Hope, my above code will save some one time.
Enjoy Coding :)