Android开发之RadioGroup的简单使用与监听示例

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="horizontal" >
  <radiogroup
    android:id="@+id/radiogroup1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="horizontal" >
    <radiobutton
      android:id="@+id/radio0"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:checked="true"
      android:text="男" />
    <radiobutton
      android:id="@+id/radio1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="女" />
  </radiogroup>
</linearlayout>

package com.example.hello;
import android.support.v7.app.actionbaractivity;
import android.widget.radiogroup;
import android.widget.toast;
import android.widget.radiogroup.oncheckedchangelistener;
import android.os.bundle;
public class mainactivity extends actionbaractivity implements oncheckedchangelistener{
  private radiogroup rg;
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    rg = (radiogroup) findviewbyid(r.id.radiogroup1);
    rg.setoncheckedchangelistener(this);
  }
  @override
  public void oncheckedchanged(radiogroup group, int checkedid) {
    switch(checkedid){
      case r.id.radio0:
        toast.maketext(mainactivity.this, "男", 1).show();
        break;
      case r.id.radio1:
        toast.maketext(mainactivity.this, "女", 1).show();
        break;
    }
  }
}