Android開發之RadioButton選項按鈕的使用

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卿篤軍

原文地址：http://blog.csdn.net/qingdujun/article/details/40679959

本文示範，Android選項按鈕的使用。

1）MainActivity.java

package com.dg.radio;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.widget.RadioGroup;import android.widget.RadioGroup.OnCheckedChangeListener;import android.widget.Toast;public class MainActivity extends Activity {RadioGroup rGroup;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                //擷取介面上的RadioGroup組件        rGroup = (RadioGroup)findViewById(R.id.radioGroup1);        rGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup arg0, int arg1) {// TODO Auto-generated method stubswitch(arg1){case R.id.male:Toast.makeText(getApplicationContext(), "您選擇的性別是男", 0).show();break;case R.id.female:Toast.makeText(getApplicationContext(), "您選擇的性別是女", 1).show();break;default:break;}}});    }    @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;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}

2）activity_main.xml

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.dg.radio.MainActivity" >    <RadioGroup        android:id="@+id/radioGroup1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true"        android:layout_marginTop="134dp" ><!-- 預設選擇 ：男-->        <RadioButton            android:id="@+id/male"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:checked="true"              android:text="男" />        <RadioButton            android:id="@+id/female"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="女" />    </RadioGroup></RelativeLayout>

3）運行效果

  

原文地址：http://blog.csdn.net/qingdujun/article/details/40679959

Android開發之RadioButton選項按鈕的使用