Android学习笔记——多选按钮CheckBox

 

实现多选按钮的监听有两种方法：OnClickListener 和 OnCheckedChangeListener

下面是这两种方法的实现：

1. OnClickListener 的使用方法

　　　　 activity_main部分

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".MainActivity" >



    <CheckBox

        android:id="@+id/eatId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="吃饭"/>

    

    <CheckBox

        android:id="@+id/sleepId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="睡觉"/>

    

    <CheckBox

        android:id="@+id/playId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="玩耍"/>





</LinearLayout>

activity_main.xml

 　　　　MainActivity.java部分

package com.iddiea.checkbox;



import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.CompoundButton.OnCheckedChangeListener;



public class MainActivity extends Activity {

    

    private CheckBox eatBox;

    private CheckBox sleepBox;

    private CheckBox playBox;

    

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        

        eatBox = (CheckBox)findViewById(R.id.eatId);

        sleepBox = (CheckBox)findViewById(R.id.sleepId);

        playBox = (CheckBox)findViewById(R.id.playId);

                                        

        OnBoxClickListener listener = new OnBoxClickListener();

        eatBox.setOnClickListener(listener);

        sleepBox.setOnClickListener(listener);

        playBox.setOnClickListener(listener);

}



class OnBoxClickListener implements OnClickListener{



        @Override

        public void onClick(View view) {

            CheckBox box =(CheckBox)view;

            if (box.getId()==R.id.eatId) {

                System.out.println("eatBox");    

            }

            else if (box.getId()==R.id.sleepId){

                System.out.println("sleepBox");

            }

            else if (box.getId()==R.id.playId){

                System.out.println("playBox");

            }

            

            if(box.isChecked()){

            System.out.println("Checkbox is clicked ");

            }

            else {

                System.out.println("Checkbox is clicked ");    

            }

        }



        

    }



    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }



}

MainActivity.java

 

　　2.  OnCheckedChangeListener 的使用方法

　　　　activity_main部分

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".MainActivity" >



    <CheckBox

        android:id="@+id/eatId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="吃饭"/>

    

    <CheckBox

        android:id="@+id/sleepId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="睡觉"/>

    

    <CheckBox

        android:id="@+id/playId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="玩耍"/>



</LinearLayout>

activity_main

 

 　　　　MainActivity.java部分

package com.iddiea.checkbox;



import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.CompoundButton.OnCheckedChangeListener;



public class MainActivity extends Activity {

    

    private CheckBox eatBox;

    private CheckBox sleepBox;

    private CheckBox playBox;

    

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        

        eatBox = (CheckBox)findViewById(R.id.eatId);

        sleepBox = (CheckBox)findViewById(R.id.sleepId);

        playBox = (CheckBox)findViewById(R.id.playId);

        

        

        CheckBoxListener listener = new  CheckBoxListener();

        eatBox.setOnCheckedChangeListener(listener);

        sleepBox.setOnCheckedChangeListener(listener);

        playBox.setOnCheckedChangeListener(listener);



}

    

    class CheckBoxListener implements OnCheckedChangeListener{



        @Override

        public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {

            if(buttonView.getId()==R.id.eatId){

                System.out.println("eatBox");

            }

            else if (buttonView.getId()==R.id.sleepId){

                System.out.println("sleepBox");

            }

            else if (buttonView.getId()==R.id.playId){

                System.out.println("playBox");        

            }

            

            if(isChecked){

                System.out.println("Checked");

            }

            else {

                System.out.println("UnChecked");

            }

}

        

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }



}

Main_Activity.java

 

　　3. 实现 选中All  自动选中其他 子项

　　　　activity_main部分

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".MainActivity" >



    <CheckBox

        android:id="@+id/eatId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="吃饭"/>

    

    <CheckBox

        android:id="@+id/sleepId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="睡觉"/>

    

    <CheckBox

        android:id="@+id/playId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="玩耍"/>

    

    <CheckBox

        android:id="@+id/allId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="All"/>



</LinearLayout>

activity_main.xml

 

 　　　　MainActivity部分

package com.iddiea.checkbox;



import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.CompoundButton.OnCheckedChangeListener;



public class MainActivity extends Activity {

    

    private CheckBox eatBox;

    private CheckBox sleepBox;

    private CheckBox playBox;

    private CheckBox allBox;

    

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        

        eatBox = (CheckBox)findViewById(R.id.eatId);

        sleepBox = (CheckBox)findViewById(R.id.sleepId);

        playBox = (CheckBox)findViewById(R.id.playId);

        allBox = (CheckBox)findViewById(R.id.allId);

        

        

        CheckBoxListener listener = new  CheckBoxListener();

        eatBox.setOnCheckedChangeListener(listener);

        sleepBox.setOnCheckedChangeListener(listener);

        playBox.setOnCheckedChangeListener(listener);

        allBox.setOnCheckedChangeListener(listener);

        

    }

    

    class CheckBoxListener implements OnCheckedChangeListener{



        @Override

        public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {



if (buttonView.getId()==R.id.allId) {

                eatBox.setChecked(isChecked);

                sleepBox.setChecked(isChecked);

                playBox.setChecked(isChecked);

            }



        }

        

    }

@Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }



}

MainActivity.java

 

运行结果：