Android 如果单选按钮不为'；t检查

正在开发教育android应用程序。一个通过

EditText

输入、单选按钮和

复选框提供答案

我想检查一下
RadioGroup
，当单击no
RadioButton
时，它将提示学生并阻止提交。我成功地编辑了
EditText
，但对
RadioButton
不成功

public void checkEmptyButtons(View view){
  RadioGroup rg = (RadioGroup) findViewById(R.id.myRg);
    if (rg.getCheckedRadioButton()==-1{

    // this is where I have a problem
    //I don't even know how to search on the                     //dev.anderoid site
        }
    }

if (rg.getCheckedRadioButtonId() == -1) {
    //no radio buttons are checked
}
else {
    //any one of the radio buttons is checked
}

那就是我被绊倒的地方。提前谢谢
.
使用
getCheckedRadioButtonId（）
代替
getCheckedRadioButton（）

您需要选中radioGroup更改侦听器：

rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
              //here you will get callback everytime radio button is checked along with id. You can have boolean checked here to know if any of your radio button is checked


            }
        });

可能的重复可能的重复