RadioButton

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.pingyijinren.helloworld.MainActivity">

    <RadioGroup
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:id="@+id/group">
        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="音乐"
            android:id="@+id/music"/>
        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="电视剧"
            android:id="@+id/movie"/>
    </RadioGroup>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="button"
        android:id="@+id/button"/>

</LinearLayout>

package com.pingyijinren.helloworld;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private RadioGroup group;
    private RadioButton music;
    private RadioButton movie;
    private Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        group=(RadioGroup)findViewById(R.id.group);
        music=(RadioButton)findViewById(R.id.music);
        movie=(RadioButton)findViewById(R.id.movie);

        group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                if(music.isChecked()){
                    Toast.makeText(MainActivity.this,"音乐",Toast.LENGTH_SHORT).show();
                }
                else{
                    Toast.makeText(MainActivity.this,"电影",Toast.LENGTH_SHORT).show();
                }
            }
        });

        button=(Button)findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                group.clearCheck();
            }
        });
    }
}