Android初级教程小案例之单选框RadioGroup与复选框CheckBox

Android里面的单选框和html中的其实是一样的效果。这里用到两个控件：CheckBox和RadioGroup。直接上代码：

radio.xml布局文件：

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

String.xml代码：

<?xml version="1.0" encoding="utf-8"?>    Hello World, Activity07!    activity07    男    女    swim    run    read

RadioTest:

package mars.activity07;import android.app.Activity;import android.os.Bundle;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.Toast;public class RadioTest extends Activity {    /** Called when the activity is first created. *///对控件对象进行声明private RadioGroup genderGroup = null;private RadioButton femaleButton = null;private RadioButton maleButton = null;private CheckBox swimBox = null;private CheckBox runBox = null;private CheckBox readBox = null;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.radio);        //通过控件的ID来得到代表控件的对象        genderGroup = (RadioGroup)findViewById(R.id.genderGroup);        femaleButton = (RadioButton)findViewById(R.id.femaleButton);        maleButton = (RadioButton)findViewById(R.id.maleButton);        swimBox = (CheckBox)findViewById(R.id.swim);        runBox = (CheckBox)findViewById(R.id.run);        readBox = (CheckBox)findViewById(R.id.read);        //为RadioGroup设置监听器，需要注意的是，这里的监听器和Button控件的监听器有所不同        genderGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {// TODO Auto-generated method stubif(femaleButton.getId() == checkedId){System.out.println("famale");Toast.makeText(RadioTest.this, "famle", Toast.LENGTH_SHORT).show();}else if(maleButton.getId() == checkedId){System.out.println("male");Toast.makeText(RadioTest.this, "male", Toast.LENGTH_SHORT).show();}}});                //为多选按钮添加监听器        swimBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {// TODO Auto-generated method stubif(isChecked)//未选中到选中状态是执行这里：{System.out.println("swim is checked");}else//由选中状态到未选中状态时候执行这里：{System.out.println("swim is unchecked");}}});        runBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {// TODO Auto-generated method stubif(isChecked){System.out.println("run is checked");}else{System.out.println("run is unchecked");}}});        readBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {// TODO Auto-generated method stubif(isChecked){System.out.println("read is checked");}else{System.out.println("read is unchecked");}}});    }    }

注册文件进行注册：

执行效果图：

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