How to get the id of selected radio button in android?

Question

I am working on quiz application in android. We have created Select.java page which displays the questions and options(with radio buttons) from sqlite datab

Answer 1

I know it's a old question but i don't see my answer in anywhere and i found it more simple than others..

so here we go:

int myRadioChecked;
if(radioGroup.getCheckedRadioButtonId() == findViewById(R.id.YOUR_RADIO_BUTTON).getId()) {
  /**Do Stuff*/
  //ex.: myRadioChecked = 1;
}

Answer 2

final RadioGroup radioGroup = (RadioGroup) findViewById(R.id.MyRadioGroup);

radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

    @Override
    public void onCheckedChanged(RadioGroup arg0, int arg1) {
        int selectedId = radioGroup.getCheckedRadioButtonId();
        Log.i("ID", String.valueOf(selectedId));

    }
});

Answer 3

In RadioGroup Class you can use method getCheckedRadioButtonId();

RadioGroup rg = findViewById(R.id.radioGroup); rg.getCheckedRadioButtonId();

Returns the identifier of the selected radio button in this group. Upon empty selection, the returned value is -1.

Answer 4

Hmmm, just add one more member variable in UserBO to store selected answer.

Class UserBO {

private int userID;
private String userName;
private String question;
private String option1;
private String option2;
private String option3;

private int answerID;

//create getter and setters for above member variables
} 

then within onclick listener of Adapter class, do like as following

radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(RadioGroup radioGroup,
                int radioButtonID) {
        switch(radioButtonID) {
                case R.id.option1:
                       listItem.setAnswerID(1);
            break;
        case R.id.option2:
                listItem.setAnswerID(2);
            break;

                 }
        }
    });

then change your header constructor to receive userarraylist (which contains user details with answer)

ArrayList<USerBO> userList;
Header(Context context, AttributeSet attrs, ArrayList<UserBO> userALt) {
userList = userAL;
}

//on next button click

onclick() {
    for(UserBO userObj: userList) {
        if (userObj.getAnswerID != 0)
         Log.d("AnswerID", userObj.getAnswerID);
    }
}

it just like sudo code.. i hope this will help u..

Answer 5

This is the best way:

RadioButton button = findViewById(v.getId());

Answer 6

you can get the id of selected button by the following this.Here

int position = group.indexOfChild(radioButton);

will give you the id.Also you can to Toast to see id like this

 Toast.makeText(MainActivity.this,"Id of radio button"+position+, Toast.LENGTH_SHORT).show();

This will pop up - "Id of radio button you clicked is 0" if you clicked first button.