Android back&menu 物理按键使用

今天项目中要使用到back按键,网上看了下别人的做法,但是没有搞定.换了下思路,到java层改了下,简单实用
重写下dispatchKeyEvent 或者dispatchTouchEvent
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
// TODO Auto-generated method stub
if(event.getKeyCode() == KeyEvent.KEYCODE_BACK){
Log.i(“keycoude”, “KEYCODE_BACK is click”);
}
if(event.getKeyCode() == KeyEvent.KEYCODE_MENU)
Log.i(“keycoude”, “KEYCODE_MENU is click”);

    return super.dispatchKeyEvent(event);
}