接口 interface

举例：

声明

public interface onUserTouchListener {
public boolean onUserTouch(MotionEvent e);
}

定义

private onUserTouchListener mListener;

方法

public void setOnUserTouchListener(onUserTouchListener listener)
{
mListener = listener;
}

触发调用

mListener.onUserTouch(event);

其他程序实现该接口

views.setOnUserTouchListener(new onUserTouchListener(){
public boolean onUserTouch(MotionEvent e) {
return false;
}

});