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