view-activity跟控件在onkey事件上的传递关系

android 中Activity跟View对于键盘的监听，主要有以下几个方法

//按键按下
public boolean onKeyDown(int keyCode, KeyEvent event)  {}
//按键弹起
public boolean onKeyUp(int keyCode, KeyEvent event) {}
//常按
public boolean onKeyLongPress(int keyCode, KeyEvent event) {}

我们今天先看的就是按下、弹起两个事件，在activity跟view两者之间的传递关系。

我们先看如下的测试代码

首先是自定义view，重写了onkeyDown 跟onkeyUp两个方法

@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {// TODO Auto-generated method stubboolean a = super.onKeyDown(keyCode, event);Log.e("123", "view_onkeydown|a===" + a);return a;}@Overridepublic boolean onKeyUp(int keyCode, KeyEvent event) {// TODO Auto-generated method stubboolean a = super.onKeyUp(keyCode, event);Log.e("123", "view_onkeyup|a==" + a);return a;}

接下来是在activity中重写了上面两个方法

@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {// TODO Auto-generated method stubLog.e("123", "activity_onkeydown");return super.onKeyDown(keyCode, event);}@Overridepublic boolean onKeyUp(int keyCode, KeyEvent event) {// TODO Auto-generated method stubLog.e("123", "activity_onkeyup");return super.onKeyUp(keyCode, event);}

然后我们打下log

1.当焦点不在自定义view上的时候

  1 00-01 08:59:54.755: E/123(9250): activity_onkeydown2 01-01 08:59:54.951: E/123(9250): activity_onkeyup3 01-01 08:59:55.757: E/123(9250): activity_onkeydown4 01-01 08:59:55.964: E/123(9250): activity_onkeyup

2.当焦点在view上的时候

  1 01-01 09:01:14.914: E/123(9250): view_onkeydown|a===true2 01-01 09:01:15.043: E/123(9250): view_onkeyup|a==false3 01-01 09:01:15.044: E/123(9250): activity_onkeyup4 01-01 09:01:16.451: E/123(9250): view_onkeydown|a===true5 01-01 09:01:16.614: E/123(9250): view_onkeyup|a==false6 01-01 09:01:16.615: E/123(9250): activity_onkeyup