android sdk---radioGroup用法实例

需求：

点击radioGroup中的radioButton,下面显示选中的radioButton的文字

代码：

  myTextView1 = (TextView)findViewById(R.id.textView1);
        myRadioGroup1 = (RadioGroup)findViewById(R.id.radioGroup1);
        myRadio1 = (RadioButton)findViewById(R.id.radio0);
        myRadio2 = (RadioButton)findViewById(R.id.radioButton1);
        myTextView1.setText("");
        myRadioGroup1.setOnCheckedChangeListener((OnCheckedChangeListener) mRadioChanged);
   
    }
    private RadioGroup.OnCheckedChangeListener mRadioChanged =
      new RadioGroup.OnCheckedChangeListener()
    {

  @Override
  public void onCheckedChanged(RadioGroup arg0, int checkedId) {
   // TODO Auto-generated method stub
   if(checkedId == myRadio1.getId())
   {
    myTextView1.setText(myRadio1.getText());
   }
   else if(checkedId == myRadio2.getId())
   {
    myTextView1.setText(myRadio2.getText());
   }
  }
    };

 

xml：

    <RadioGroup
        android:id="@+id/radioGroup1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" >

        <RadioButton
            android:id="@+id/radio0"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:checked="true"
            android:text="boy" />

        <RadioButton
            android:id="@+id/radioButton1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="girl" />
    </RadioGroup>

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/radioGroup1"
        android:layout_below="@+id/radioGroup1"
        android:layout_marginTop="82dp"
        android:text="TextView" />

重点：

这个用法和之前的checkBox用法类似，调用的函数也一样：

setOnCheckedChangeListener

OnCheckedChangeListener

onCheckedChanged

区别在于，内部根据传进去的checkId来区分是哪个radioButton