RadioGroup和RadioButton的setOnCheckedChangeListener

第一种：

private RadioGroup group;  
private RadioButton rb1 ;
private RadioButton rb2 ;
group = (RadioGroup) findViewById(R.id.group);          
this.rb1 = (RadioButton) this.findViewById(R.id.button1) ;
this.rb2 = (RadioButton) this.findViewById(R.id.button2) ;
// 单选按钮组监听事件  
group.setOnCheckedChangeListener(new OnCheckedChangeListener() {  
@Override  
public void onCheckedChanged(RadioGroup group, int checkedId) {  
// 根据ID判断选择的按钮  
if (checkedId == R.id.button1) {                    
    textView.setText("Android新手"); 
    rb1.setText("我是1") ;
    String msg = rb1.getText().toString() ; //获取单独的radioButton的按钮
    rb2.setText(msg) ;
} else { 
textView.setText("Android高手"); 
rb2.setText("我是2") ;
} } }); 

 

第二种：

    //对控件对象进行声明 

    private RadioGroup genderGroup=null; 

    private RadioButton femaleRadioButton=null; 

    private RadioButton maleRadioButton=null; 

    private EditText editText1=null; 

    @Override 

    public void onCreate(Bundle savedInstanceState) { 

        super.onCreate(savedInstanceState); 

        setContentView(R.layout.main); 

        //通过控件的ID来得到代表控件的对象 

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

        femaleRadioButton=(RadioButton)findViewById(R.id.femaleButton); 

        maleRadioButton=(RadioButton)findViewById(R.id.maleButton); 

        editText1=(EditText)findViewById(R.id.editText1); 

        //给RadioGroup设置事件监听 

        genderGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 

            @Override 

            public void onCheckedChanged(RadioGroup group, int checkedId) { 

                // TODO Auto-generated method stub 

                if(checkedId==femaleRadioButton.getId()){ 

                    editText1.setText("女性"); 

                }else if(checkedId==maleRadioButton.getId()){ 

                    editText1.setText("男性"); 

                } 

            } 

        });

 

第三种：

TextView tv = null;//根据不同选项所要变更的文本控件
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
        
         setContentView(R.layout.main);
        
         //根据ID找到该文本控件
         tv = (TextView)this.findViewById(R.id.tvSex);
         //根据ID找到RadioGroup实例
         RadioGroup group = (RadioGroup)this.findViewById(R.id.radioGroup);
         //绑定一个匿名监听器
         group.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            
             @Override
             public void onCheckedChanged(RadioGroup arg0, int arg1) {
                 // TODO Auto-generated method stub
                 //获取变更后的选中项的ID
                 int radioButtonId = arg0.getCheckedRadioButtonId();
                 //根据ID获取RadioButton的实例
                 RadioButton rb = (RadioButton)MyActiviy.this.findViewById(radioButtonId);
                 //更新文本内容，以符合选中项
                 tv.setText("您的性别是：" + rb.getText());
             }
         });
     }