Android中单选按钮（RadioGroup）的使用

1.activity_main.xml文件中

2.MainActivity.java文件中

package com.t20.RadioGroup;


import android.app.Activity;
import android.os.Bundle;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.Toast;

public class MainActivity extends Activity implements OnCheckedChangeListener {
	private RadioGroup rgSex;
	private String sex;// 性别

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		rgSex = (RadioGroup) findViewById(R.id.rgSex);

		// 绑定事件
		rgSex.setOnCheckedChangeListener(this);
	}

	@Override
	public void onCheckedChanged(RadioGroup radioGroup, int id) {
		// TODO Auto-generated method stub
		switch (id) {
		// 选择男
		case R.id.rbMale:
			sex = "男";
			break;

		// 选择女
		case R.id.rbFemale:
			sex = "女";
			break;
		default:
			break;
		}
		Toast.makeText(MainActivity.this, sex, Toast.LENGTH_SHORT).show();
	}
}