Android Studio：从activity_main.xml检索单选按钮ID

Question

I am trying to retrieve the checked radio button ID so that I can then do a Switch and have something happen depending on what the user has checked, followed by them pressing the "complete survey" button. However, the method below retrieves some odd ID (not one that I've specified for that radio button in the XML file. It gives me a large name like "android.widget.RadioButton@5363daa0." What gives?

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

    //set up our textview
    showChoiceTextView = (TextView)findViewById(R.id.showTextView);
    radioGroup = (RadioGroup)findViewById(R.id.radioGroupID);
    showButton = (Button)findViewById(R.id.showChoiceButton);


    showButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {


            int selectedOption = radioGroup.getCheckedRadioButtonId();
            radioChoiceButton = (RadioButton)findViewById(selectedOption);
            String text = radioChoiceButton.toString();
            Toast.makeText(getApplicationContext(),text,Toast.LENGTH_LONG).show();
        }
    });

Answer 1

To get a view's text you must use view.getText() method. Remember the a radioGroup is an object and the text is one of it's values.

Also, to retrieve it's id you must use getId() method.

The id you want to retrieve is the name of the constant, and getId() retrieves it's value. If i say for example:

int id = 10;

Then 10 is it's value (use getId() to retrieve) and "id" is it's name.