RadioButton和CheckBox的区别及使用场景

RadioButton

      一组RadioButton，只能同时选中一个

      单个RadioButton在选中后，通过点击无法变为未选中 

      RadioButton依附于RadioGroup下

      

CheckBox

      

      一组CheckBox，能同时选中多个

      单个CheckBox在选中后，通过点击可以变为未选中

实例说明: (并添加监听事件)

activity1.xml文件布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.yongninggo.helloworld1.MainActivity"
    android:orientation="vertical"
    android:gravity="center_horizontal">

    <CheckBox
        android:id="@+id/nan"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="男"/>

    <CheckBox
        android:id="@+id/nv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="女"/>

    <RadioGroup
        android:id="@+id/radio1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_marginTop="100dip">
        <RadioButton
            android:checked="true"
            android:id="@+id/nan1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="男"/>

        <RadioButton
            android:id="@+id/nv1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="女"/>
    </RadioGroup>

</LinearLayout>

activity1.java文件

package com.yongninggo.helloworld1;

import android.os.Bundle;
import android.support.annotation.IdRes;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioGroup;

public class Activity1 extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener {


    private CheckBox nan;
    private CheckBox nv;

    private RadioGroup radioGroup;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity1);

        nan = (CheckBox) findViewById(R.id.nan);
        nv = (CheckBox) findViewById(R.id.nv);

        radioGroup = (RadioGroup) findViewById(R.id.radio1);

        nan.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked){
                  String text = nan.getText().toString();
                    Log.i("myc",text);
                }
            }
        });

        nv.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked){
                    String text = nv.getText().toString();
                    Log.i("myc",text);
                }
            }
        });

        radioGroup.setOnCheckedChangeListener(this);
    }

    @Override
    public void onCheckedChanged(RadioGroup group, @IdRes int checkedId) {
        switch (checkedId){
            case R.id.nan1 :
                Log.i("myc","选择男");
                break;
            case R.id.nv1 :
                Log.i("myc","选择女");
                break;
            default:
                break;
        }
    }
}