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

    <LinearLayout android:orientation="vertical" android:layout_height="fill_parent" android:layout_width="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android">

    <TextView android:layout_height="wrap_content" android:layout_width="fill_parent" android:text="多选控件：" android:id="@+id/label"/>

    <RadioGroup android:orientation="horizontal" android:layout_height="fill_parent" android:layout_width="fill_parent" android:id="@+id/radionGroup">

    <RadioButton android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="女" android:id="@+id/radioFemale"/>

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

    <Button android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="确定" android:id="@+id/ok"/>

</RadioGroup>

</LinearLayout>

package com.example.yanlei.mytk;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.Button;

import android.widget.RadioButton;

public class MainActivity extends AppCompatActivity  {

    private RadioButton radioFemale;

    private RadioButton radioMale;

    private Button ok;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        radioFemale=(RadioButton)findViewById(R.id.radioFemale);

        radioMale=(RadioButton)findViewById(R.id.radioMale);

        ok=(Button)findViewById(R.id.ok);

        ok.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                String result = "你选择的是：";

                if (radioFemale.isChecked()) {

                    setTitle(result + "女");

                } else {

                    setTitle(result + "男");

                }

            }

        });

    }

}