Question

android里点击监听实现的方法中的view.getid()的作用

Answer 1

view.getid()就是获取当前点击的view的id，这个id一般是你在xml布局文件设置的id

Answer 2

当很多个控件注册同一个监听的时候，就是通过view.getid()返回的id来区别究竟是哪一个控件响应了监听事件.

Button btn1,btn2;
btn1 = (Button)findViewById(R.id.btn1);
btn2 = (Button)findViewById(R.id.btn2);
View.OnclickListener listener = new OnclickListener(){
@Override
public void onClick( View view){
switch(view.getId()){
case R.id.btn1:
Log.d("btn1"," has been clicked! ");
break;
case R.id.btn2:
Log.d("btn2","has been clicked !");
break;
default:
break;
}
}
}

btn1.setOnclickListener(listener);
btn2.setOnclickListener(listener);