android捕获Home键的方法

Level5以上(包含)中，Activity类中有如下方法:
public void onAttachedToWindow ()
Since: API Level 5

Called when the main window associated with the activity has been attached to the window manager. See View.onAttachedToWindow() for more information.

private
 
boolean
 catchHomeKey = 
false
;
    @Override
        public
 
void
 onAttachedToWindow() {
                // TODO Auto-generated method stub
            if
(catchHomeKey) {
                    this
.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
            }
                super
.onAttachedToWindow();
        }
        @Override
        public
 
boolean
 onKeyDown(
int
 keyCode, KeyEvent event) {
                // TODO Auto-generated method stub
                if
(keyCode == KeyEvent.KEYCODE_HOME) {
                        Log.e(TAG, "Home key down"
);
                }
                return
 
super
.onKeyDown(keyCode, event);
        }
重写Activity中的onAttachedToWindow方法，设置Type，就能捕获到Home键。
当不需要捕获时，删除setType这一行就OK

 

评论

1 楼 瘾心丶Android 2015-03-31  

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