Android Launcher - Home Button

I'm developing a Home Screen Launcher App for Android. Now, if the user is already on the homescreen, i want a custom action when the user presses the the homebutton. I know some

Solution 1:

Launcher is some kind of activity.

So I believe that you will gain focus when user is pressing the home button. One thing I can tell you for sure. This is possible!

You got setOnFocusChanged() in a View class

Solution 2:

Referencing this post:

You cannot "detect home key Button press event", sorry.

However on the same post Idistic suggests this as a work around:

longuserInteractionTime=0;

@OverridepublicvoidonUserInteraction() {
    userInteractionTime = System.currentTimeMillis();
    super.onUserInteraction();
    Log.i("appname","Interaction");
}

@OverridepublicvoidonUserLeaveHint() {
    longuiDelta= (System.currentTimeMillis() - userInteractionTime);

    super.onUserLeaveHint();
    Log.i("bThere","Last User Interaction = "+uiLag);
    if (uiDelta < 100)
        Log.i("appname","Home Key Pressed");    
    else
        Log.i("appname","We are leaving, but will probably be back shortly!");  
}