Android - Check RadioButton ID in a RadioGroup with LinearLayout

Question

Is there any possible way to get the selected radio button in this layout? because rg.getCheckedRadioButtonId() not working on this layout. I can

Answer 1

You can get selected radio button by this way

int selectedId = radioGroup.getCheckedRadioButtonId();
// find the radiobutton by returned id
radioButton = (RadioButton) findViewById(selectedId);

this will return you the id of selected radio button

Answer 2

Check this answer i have done in my studio, hope this helps,

    public class StackOne extends AppCompatActivity {

    private RadioButton rb1, rb2, rb3, rb4;
    private RadioGroup rg;
    private String selectedType = "";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.stack_one);

        rb1 = (RadioButton) findViewById(R.id.rad1);
        rb2 = (RadioButton) findViewById(R.id.rad2);
        rb3 = (RadioButton) findViewById(R.id.rad3);
        rb4 = (RadioButton) findViewById(R.id.rad4);
        rg = (RadioGroup) findViewById(R.id.rg);

        GetSelectedRadioButton();
    }

    private void GetSelectedRadioButton() {

        rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {

                switch (group.getCheckedRadioButtonId()) {
                    case R.id.rad1:
                        selectedType = "rButton1";
                        rb1.setChecked(true);
                        Toast.makeText(StackOne.this,"Radiobutton 1 checked",Toast.LENGTH_LONG).show();
                        break;
                    case R.id.rad2:
                        selectedType = "rButton2";
                        rb2.setChecked(true);
                        Toast.makeText(StackOne.this,"Radiobutton 2 checked",Toast.LENGTH_LONG).show();
                        break;
                    case R.id.rad3:
                        selectedType = "rButton2";
                        rb3.setChecked(true);
                        Toast.makeText(StackOne.this,"Radiobutton 3 checked",Toast.LENGTH_LONG).show();
                        break;
                    case R.id.rad4:
                        selectedType = "rButton2";
                        rb4.setChecked(true);
                        Toast.makeText(StackOne.this,"Radiobutton 4 checked",Toast.LENGTH_LONG).show();
                        break;

                }
            }
        });
    }
}

Checkout this for more detail.