BackButton on android phone not working on fullscreen image?

Question

friends,

i am using following property to show image on full screen

android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

in manifest file

@Override
    public boolean onKeyDown(int keyCode, KeyEvent event) 
    {

        if(keyCode==KeyEvent.KEYCODE_DPAD_LEFT)
        {

             ShowError.setVisibility(View.GONE);
                if(CurrentImageIndex + 1 < mImage_URL.length )
                {
                    CurrentImageIndex  = CurrentImageIndex +1 ;
                    Move();
                }


        }else if(keyCode==KeyEvent.KEYCODE_DPAD_RIGHT)
        {

             ShowError.setVisibility(View.GONE);
                if(CurrentImageIndex > 0 )
                {
                    CurrentImageIndex  = CurrentImageIndex -1 ;
                    Move();

                }


        }           
        return true;

    }






}

when image is display on full screen then backbutton(Hardware button on phone) does not work.

any one guide me what is the solution?

any help would be appreciated.

Answer 1

i was override onkeydown event and forgot to write backevent. on keydown event directly effect keypad and backbutton functionality in case of overriding.

@Override
    public boolean onKeyDown(int keyCode, KeyEvent event) 
    {
if(keyCode == KeyEvent.KEYCODE_BACK)
        {
            Intent intent = new Intent();
            setResult(RESULT_OK, intent);
            finish();


        }

        return true;

    }