Android控件之RadioButton

Android控件之RadioButton

RadioButton示例

创建一个activity，包含3个RadioButton：默认选中第一个；并且点击每个button都会给出相应的提示语。

应用层代码

package com.skywang.control; import android.os.Bundle; import android.app.Activity; import android.widget.RadioButton; import android.widget.Toast; import android.view.View; import android.view.View.OnClickListener; import android.util.Log; public class RadioButtonTest extends Activity implements View.OnClickListener{ private static final String TAG="SKYWANG"; private RadioButton mRadioOne; private RadioButton mRadioTwo; private RadioButton mRadioThree; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.radio_button_test); // RadioButton one

        mRadioOne = (RadioButton) findViewById(R.id.radio_one); mRadioOne.setOnClickListener(this); // RadioButton two

        mRadioTwo = (RadioButton) findViewById(R.id.radio_two); mRadioTwo.setOnClickListener(this); // RadioButton three 

        mRadioThree = (RadioButton) findViewById(R.id.radio_three); mRadioThree.setOnClickListener(this); } @Override public void onClick(View v) { boolean checked = ((RadioButton) v).isChecked(); switch (v.getId()) { case R.id.radio_one:{ Toast.makeText(getApplicationContext(), getString(R.string.text_one), Toast.LENGTH_LONG).show(); break; } case R.id.radio_two:{ Toast.makeText(getApplicationContext(), getString(R.string.text_two), Toast.LENGTH_LONG).show(); break; } case R.id.radio_three:{ Toast.makeText(getApplicationContext(), getString(R.string.text_three), Toast.LENGTH_LONG).show(); break; } default: break; } } }

 

layout文件

<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" >



    <RadioGroup android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical">

    

        <RadioButton android:id="@+id/radio_one" android:layout_width="wrap_content" android:layout_height="wrap_content" android:checked="true" android:text="@string/text_one"/>

        

        <RadioButton android:id="@+id/radio_two" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/text_two"/>

    

        <RadioButton android:id="@+id/radio_three" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/text_three"/>

        

    </RadioGroup>

    

</LinearLayout>

 

manifest文件

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.skywang.control" android:versionCode="1" android:versionName="1.0" >



    <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" />



    <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" >

        <activity android:name="com.skywang.control.RadioButtonTest" android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />



                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>



</manifest>

 

点击下载：源代码

 

运行效果图：