Set default checked Radio Button

Question

I'm creating a RadioGroup with RadioButtons dynamically and need to have one radio button checked by default.

I've done this by using both radioButton.setChecked(true) and radioButton.toggle();

The problem I have is that when I at runtime select another radio button the first one stays checked so I end up with two checked radio buttons in the radio group.

Has anyone had this problem and know how to solve it?

private RadioButton addRadioButton(String type, String price){
        RadioButton radio = new RadioButton(Order.this);
        radio.setText(type + " (" + Utils.formatCurrency(price) + ")");
        radio.setTextAppearance(Order.this, R.style.portalCellTextStyle);
        radio.setTextSize(TypedValue.COMPLEX_UNIT_SP, 10);
        radio.setTag(price);

        if(type.toLowerCase().equals("m"))
            radio.toggle();

        return radio;
    }

Are you sure you add radiobutton to correct radiogroup? – ridvanzoro Dec 16 '13 at 12:11 — ridvanzoro, Dec 16 '13 at 12:11

score 12 · Answer 1 · answered Jan 08 '15 at 16:03

I know I'm late but for those who search for the answer like me this can be useful.

When you add RadioButton to a RadioGroup, you must set the button checked after adding it to the parent like:

RadioGroup radioGroup = new RadioGroup(getContext())
RadioButton radioButton = new RadioButton(getContext());
radioButton.setText("text");
mRadioGroup.addView(radioButton);
radioButton.setChecked(true);

If the view is checked before adding it to the parent, it will be impossible to uncheck it.

score 4 · Answer 2 · answered Sep 17 '14 at 11:10

You can do this simply:

JAVA:

    radiogroup =(RadioGroup)findViewById(R.id.radiogroup);
    radiobutton1 =(RadioButton)findViewById(R.id.radiobutton1);
    radiobutton2 =(RadioButton)findViewById(R.id.radiobutton2);

    if(your first assessment){
        radiobutton1.setChecked(true);
    }else{
        radiobutton2.setChecked(true);
    }

XML:

   <RadioGroup
        android:id="@+id/radiogroup"
        android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <RadioButton
        android:id="@+id/radiobutton1"
        android:checked="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

        <RadioButton
        android:id="@+id/radiobutton2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    </RadioGroup>

score 2 · Answer 3 · edited Sep 11 '15 at 06:18

2

Simple, at first time load the screen check the position of In Getview method and then apply condition:

if (position == 0) {
  holder.act_delivery_rbtn.setChecked(true);
}

edited Sep 11 '15 at 06:18

ifma

3,673
4
26
38

answered Sep 11 '15 at 05:40

Maulik Santoki

532
4
14

score 1 · Answer 4 · answered Dec 16 '13 at 12:07

1

If you are only using one radio box for checking on and off, maybe you should use checkbox or toggle button instead.

http://developer.android.com/resources/tutorials/views/hello-formstuff.html

Scroll down and see checkbox and toggle button.

When using radios you usually have more than one and choose between them. Like easy, medium, hard.

Replace

radio.toggle();

with

radio.setChecked(true);

answered Dec 16 '13 at 12:07

SilentKiller

6,944
6
40
75

I tried both and they both check the button but the button still stays checked if I check another one – thehindutimes Dec 16 '13 at 12:11
are you adding them into single RadioGroup.? – SilentKiller Dec 16 '13 at 12:12

score 1 · Answer 5 · answered Oct 17 '18 at 11:04

1

Just make checked = "true" in your code

answered Oct 17 '18 at 11:04

Dostonbek Oripjonov

1,508
1
12
28

score 0 · Answer 6 · answered Dec 16 '13 at 12:08

0

you should check it in radio group...

radiogroup.check(IdOfYourButton)

answered Dec 16 '13 at 12:08

nitesh goel

6,338
2
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38

score 0 · Answer 7 · answered Dec 16 '13 at 12:27

0

use the clearCheck () function to clear the already checked buttons.I hope this solves your problem.

answered Dec 16 '13 at 12:27

Yogamurthy

988
15
22

score 0 · Answer 8 · answered Dec 16 '13 at 12:41

Turned out to be because I called the checked() method on the radio group straight after setting the OnCheckedChangeListener() causing it to be called immediately and throw a NPE for some reason.

Moved the checked() method call to just before the OnCheckedChangeListener() and it works now.

radios.check(2);
radios.setOnCheckedChangeListener(new OnCheckedChangeListener() {   
                @Override
                public void onCheckedChanged(RadioGroup group, int checkedId) {

                }
            });

private RadioButton addRadioButton(String type, String price){
        RadioButton radio = new RadioButton(Order.this);
        radio.setText(type + " (" + Utils.formatCurrency(price) + ")");
        radio.setTextAppearance(Order.this, R.style.portalCellTextStyle);
        radio.setTextSize(TypedValue.COMPLEX_UNIT_SP, 10);
        radio.setTag(price);

        if(type.toLowerCase().equals("m"))
            radio.setId(2);

        return radio;
    }

score 0 · Answer 9 · answered Aug 06 '20 at 22:47

in Xml add android:checkedButton="@+id/storeRB" to RadioGroup

 <RadioGroup
                android:id="@+id/storeTypeRG"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:checkedButton="@+id/storeRB"
                android:orientation="horizontal"
                app:layout_constraintBottom_toBottomOf="@+id/text2"
                app:layout_constraintStart_toEndOf="@+id/text2"
                app:layout_constraintTop_toTopOf="@+id/text2">

                <RadioButton
                    android:id="@+id/storeRB"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="24dp"
                    android:button="@drawable/radio_button_bg"
                    android:paddingStart="8dp"
                    android:text="@string/store_str"
                    app:layout_constraintBottom_toBottomOf="@+id/text2"
                    app:layout_constraintStart_toEndOf="@+id/text2"
                    app:layout_constraintTop_toTopOf="@+id/text2" />

                <RadioButton
                    android:id="@+id/hyperRB"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="8dp"
                    android:button="@drawable/radio_button_bg"
                    android:paddingStart="8dp"
                    android:text="@string/hyper_str"
                    app:layout_constraintBottom_toBottomOf="@+id/text2"
                    app:layout_constraintStart_toEndOf="@+id/storeRB"
                    app:layout_constraintTop_toTopOf="@+id/text2" />

                <RadioButton
                    android:id="@+id/restaurantRB"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="8dp"
                    android:button="@drawable/radio_button_bg"
                    android:paddingStart="8dp"
                    android:text="@string/restaurant_str"
                    app:layout_constraintBottom_toBottomOf="@+id/text2"
                    app:layout_constraintStart_toEndOf="@+id/hyperRB"
                    app:layout_constraintTop_toTopOf="@+id/text2" />
            </RadioGroup>

Set default checked Radio Button

9 Answers9