CODEWITHSUNDEEP
android
RaagaSudha
RaagaSudha

Reputation: 397

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

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 database. Also we created a header.java file for displaying buttons i.e back and next buttons for the Select.java page.

enter image description here

Here we need to get the selected radio button id and need to send that to Header class. Because header class consists of the next button onclick action. Once the next button is clicked the selected radio button value has to be stored in arraylist. We created radio buttons in Select.java class. So my question is how to get the selected radio button id into that next button click action. Please help me regarding this.

Thanks in Advance.

Upvotes: 6

Views: 38152

Answers (7)

Hadzo
Hadzo

Reputation: 328

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.

Upvotes: 2

cmac
cmac

Reputation: 1

This is the best way:

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

Upvotes: -2

Acauã Pitta
Acauã Pitta

Reputation: 760

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;
}

Upvotes: 5

Real73
Real73

Reputation: 500

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.

Upvotes: 0

A.A
A.A

Reputation: 1148

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));

    }
});

Upvotes: 2

Jayabal
Jayabal

Reputation: 3619

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..

Upvotes: 0

KK_07k11A0585
KK_07k11A0585

Reputation: 2403

Your layout xml file should be like this

<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">

    <RadioGroup 
    android:orientation="vertical"
    android:id="@+id/radiogroup"
     android:layout_width="wrap_content"
  android:layout_height="wrap_content"
    >
    <RadioButton 
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:id="@+id/option1"
       android:text="Option1"
    />
    <RadioButton 
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:id="@+id/option2"
       android:text="Option2"
    />
    <RadioButton 
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:id="@+id/option3"
       android:text="Option3"
    />
    <RadioButton 
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:id="@+id/option4"
       android:text="Option4"
    />
    <RadioButton 
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:id="@+id/option5"
       android:text="Option5"
    />
    </RadioGroup>
</LinearLayout>

Add the below ode in your Activity 

RadioGroup radioGroup = (RadioGroup) findViewById(R.id.radiogroup);
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) 
            {
                RadioButton checkedRadioButton = (RadioButton) findViewById(checkedId);
                String text = checkedRadioButton.getText().toString();
                Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();
            }
        });

Upvotes: 8

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