@Override
    public boolean onKeyDown(int keyCode, KeyEvent event)
    {
        super.onKeyDown(keyCode, event);
        switch(keyCode)
        {
        case KeyEvent.KEYCODE_HOME:
            mHomeCheckbox.setChecked(true);
            ButtonsList[3] = 1;
            return true;
        }
        return false;
    }

public boolean isApplicationSentToBackground(final Context context)
    {
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
        if (!tasks.isEmpty())
        {
            mHomeCheckbox.setChecked(true);
            ButtonsList[3] = 1;
            return true;
        }
        return false;
    }

    @Override
    protected void onPause()
    {
        if (isApplicationSentToBackground(this))
        {
        }
        super.onPause();
    }

    @Override
    protected void onStop()
    {
        if (isApplicationSentToBackground(this))
        {
        }
        super.onStop();
    }