package com.cdp.checkbox;

import android.app.Activity;

import android.os.Bundle;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.Toast;

import android.widget.CompoundButton.OnCheckedChangeListener;

    //使用状态改变检查监听器

public class MainActivity extends Activity implements OnCheckedChangeListener {

    //创建3个CheckBox对象

    private CheckBox cb1, cb2, cb3;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        //实例化3个CheckBox

        cb1 = (CheckBox) findViewById(R.id.cb1);

        cb2 = (CheckBox) findViewById(R.id.cb2);

        cb3 = (CheckBox) findViewById(R.id.cb3);

        cb1.setOnCheckedChangeListener(this);

        cb2.setOnCheckedChangeListener(this);

        cb3.setOnCheckedChangeListener(this);

    }

    //重写监听器的抽象函数

    @Override

    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

        //buttonView 选中状态发生改变的那个按钮

        //isChecked 表示按钮新的状态（true/false）

        if (cb1 == buttonView || cb2 == buttonView || cb3 == buttonView) {

            if (isChecked) {

                //显示一个提示信息

                toastDisplay(buttonView.getText() + "选中");

            } else {

                toastDisplay(buttonView.getText() + "取消选中");

            }

        }

    }

    public void toastDisplay(String str) {

        Toast.makeText(this, str, Toast.LENGTH_SHORT).show();

    }

}