Can I create dynamically RadioGroup with RadioButtons inside it (w/o xml)?

Question

I want to create RadioGroup, with RadioButton list inside it, in the onCreate function. I want to do it as exercise w/o using xml-layout. Is it possible? Thanks.

Possible duplicate of [How to add radio button dynamically as per the given number of counts?](https://stackoverflow.com/questions/19380526/how-to-add-radio-button-dynamically-as-per-the-given-number-of-counts) — Mehdi Dehghani, Jul 25 '18 at 09:05

Vyacheslav Shylkin · Accepted Answer · 2012-03-25T21:24:33.657

4

Something like this:

....
RadioGroup group = new RadioGroup(this); 
group.setOrientation(RadioGroup.HORIZONTAL);
RadioButton btn1 = new RadioButton(this);
btn1.setText("BTN1");
group.addView(btn1);
RadioButton btn2 = new RadioButton(this);
group.addView(btn2);
btn2.setText("BTN2");
.... 
RadioButton btnN = new RadioButton(this);
group.addView(btnN);
btnN.setText("BTNN");
yourLayout.addView(group);
....

edited Mar 25 '12 at 21:24

answered Mar 25 '12 at 16:01

Vyacheslav Shylkin

9,741
5
39
34

score 3 · Answer 2 · edited May 23 '17 at 12:13

This will do the job:

    int buttons = 5;

    RadioGroup rgp = new RadioGroup(getApplicationContext());

    for (int i = 1; i <= buttons; i++) {
        RadioButton rbn = new RadioButton(this);
        rbn.setId(1 + 1000);
        rbn.setText("RadioButton" + i);
        //Attach button to RadioGroup.
        rgp.addView(rbn);
    }

    ViewGroup viewGroup = (ViewGroup) ((ViewGroup) this
            .findViewById(android.R.id.content)).getChildAt(0);
    viewGroup.addView(rgp);

This is a complete example:

public class MainActivity extends AppCompatActivity {

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

        //Defining buttons quantity!
        int buttons = 5;

        //Create a new instance of RadioGroup.
        RadioGroup rgp = new RadioGroup(getApplicationContext());

        //Create buttons!
        for (int i = 1; i <= buttons; i++) {
            RadioButton rbn = new RadioButton(this);
            rbn.setId(1 + 1000);
            rbn.setText("RadioButton" + i);
            //Attach button to RadioGroup.
            rgp.addView(rbn);
        }

        //Get the root view.
        ViewGroup viewGroup = (ViewGroup) ((ViewGroup) this
                .findViewById(android.R.id.content)).getChildAt(0);
        viewGroup.addView(rgp);


    }
}

And this is the result:

If you need to use a RadioGroup defined into the xml layout and add dinamically buttons see this answer.

How to get the value of selected radio which is created dynamically? — Ananta Prasad, Jan 17 '19 at 12:29

Can I create dynamically RadioGroup with RadioButtons inside it (w/o xml)?

2 Answers2