Android Back Button Utilization Inside ActivityGroup

Question

I am developing an application using TabHost. I am using android default back button to move back to previous activity from current activity by overriding onBackPressed() method inside ActivityGroup of each tab.

Now , the problem is , in one of my activity i have an EditText which get focused when the activity starts. Then , if i press back , it does not go to previous activity , instead it closes the application. By searching about the problem on internet what i have found is that when the EditText get focused which is a child view of activity's view , the activity loss focus and then if back button is pressed , for lack of focus on the current activity it closes the application. Still i am little bit confused or can be say not clear about the problem.

So, any how , i have managed to set and remove focus over EditText on run time using code. But still now , as the EditText does not have focus , if the back button is pressed , it closes the application. I am really confused what's actually going on. So , if anyone have any idea or solution about the problem , please help on the issue. I will appreciate that very much. Thanks.

Answer 1

You can override this behavior by adding Key Listener to your EditText. Try this out,

    name_edit.setOnKeyListener(new OnKeyListener() {

        public boolean onKey(View v, int keyCode, KeyEvent event) {

            if (event.getAction() == KeyEvent.ACTION_DOWN
                    && event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
                Log.i("Back event Trigered", "Back event");
                activitygroup.back();
            }
            return false;
        }
    });

Answer 2

try this

 public void onBackPressed() {

      startActivity(new Intent(currentActivity.this, previousActivity.class));
        finish();
    }

Answer 3

try this..

@Override
    public void onBackPressed() {
        onKeyDown(KeyEvent.KEYCODE_BACK, new KeyEvent(KeyEvent.ACTION_DOWN,KeyEvent.KEYCODE_BACK));
        super.onBackPressed();
    }