Android 单选框RadioGroup

Android 单选框RadioGrop的使用。里面添加的是RadioButton

package com.radiodemo;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.TextView;public class MainActivity extends Activity {/************************************* * 单选框RadioButton的使用 *  * 1.定义见布局文件 2.事件的添加方法 *  ***********************************/private TextView textView;private RadioGroup radioGroup;private RadioButton radioButton1, radioButton2;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);// 关联布局中的控件textView = (TextView) findViewById(R.id.textView);// 用来显示选择radioGroup = (RadioGroup) findViewById(R.id.radioGroup);radioButton1 = (RadioButton) findViewById(R.id.radioButton1);radioButton2 = (RadioButton) findViewById(R.id.radioButton2);radioGroup.setOnCheckedChangeListener(mChangeListener);}// 响应事件的函数。private RadioGroup.OnCheckedChangeListener mChangeListener = new RadioGroup.OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {// TODO Auto-generated method stubif (radioButton1.getId() == checkedId) {textView.setText(radioButton1.getText());} else {textView.setText(radioButton2.getText());}}};@Overridepublic 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;}}

布局文件main.xml

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