ANDROID笔记:RadioGroup和RadioButton的使用

package com.example.android_dialog;



import android.app.Activity;

import android.os.Bundle;

import android.widget.RadioGroup;

import android.widget.RadioGroup.OnCheckedChangeListener;



public class RadioTestActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);



        setContentView(R.layout.test);



        RadioGroup group = (RadioGroup) findViewById(R.id.group);

        group.setOnCheckedChangeListener(new OnCheckedChangeListener() {



            @Override

            public void onCheckedChanged(RadioGroup arg0, int arg1) {



                switch (arg1) {

                case R.id.b1:

                    System.out.println("1");

                    break;

                case R.id.b2:

                    System.out.println("2");

                    break;

                case R.id.b3:

                    System.out.println("3");

                    break;

                case R.id.b4:

                    System.out.println("4");

                    break;



                }

            }

        });

    }

}

界面布局:

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

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

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >



    <RadioGroup

        android:id="@+id/group"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal" >



        <RadioButton

            android:id="@+id/b1"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:background="@drawable/btn_selector"

            android:button="@null" />



        <RadioButton

            android:id="@+id/b2"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:background="@drawable/btn_selector"

            android:button="@null" />



        <RadioButton

            android:id="@+id/b3"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:background="@drawable/btn_selector"

            android:button="@null" />



        <RadioButton

            android:id="@+id/b4"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:background="@drawable/btn_selector"

            android:button="@null" />

    </RadioGroup>



</LinearLayout>

select

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

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



    <item android:state_checked="true" android:drawable="@drawable/a2"/>

    <!-- not selected -->

    <item android:drawable="@drawable/a1"/>



</selector>

 

效果:

PS:该代码可以代替tabhost的头名称,在类似的导航栏上也可以使用