Android单选框 RadioGroup

  使用RadioGroup步骤
  1、在activity的xml文件中添加代码如下

activity中代码如下：

public class MainActivity extends AppCompatActivity {

    private RadioGroup radioGroup;//选择按钮
    private static final String TAG="MainActivity";
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        /*控制绘图开始与停止*/
        radioGroup = (RadioGroup)findViewById(R.id.radioGroup);
        radioGroup.check(R.id.A_mode);//切换为开始绘图
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, int id) {
                RadioButton radio =(RadioButton)findViewById(id) ;
                if(radio.getText().equals("开始绘图"))
                {    
                }
                else//停止绘图
                {                 
                }
            }
        });
    }
    /*退出时取消绑定服务以及广播监听*/
    @Override
    protected void onDestroy() {
        super.onDestroy();
    }
}

效果如下图所示：