androidcentercenteringandroid-radiobuttonandroid-radiogroup

Android RadioButton not centering

I have the following RadioButtons:

enter image description here

They are generated programmatically in this method:

 private void initializeAbilityComponents() {
    rgAbility = view.findViewById(R.id.rgAbility);

    for (int i = 0; i < abilities.size(); i++) {
        RadioButton radioButton = new RadioButton(context);
        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        layoutParams.setMargins(4,4,4,4);
        radioButton.setLayoutParams(layoutParams);
        radioButton.setText(abilities.get(i).getName());
        radioButton.setId(i);
        radioButton.setGravity(Gravity.CENTER);
        PokemonUtils.setRoundedBackgroundColorToView(radioButton,selectedPokemon.getColor());
        rgAbility.addView(radioButton);
    }

And added to this xml RadioGroup:

  <RadioGroup
                android:id="@+id/rgAbility"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="6dp"
                android:layout_marginEnd="6dp"
                android:layout_marginBottom="4dp"
                android:layoutAnimation="@anim/default_layout_right_to_left_animation"
                android:orientation="vertical" />

However , as you can see , they are not really centered , the output I expect when I center is this :

enter image description here

How can I fix this ?

Solution

  • You have to add:

    radioButton.setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
radioButton.setPadding(0,0,100,0); //left, top, right, bottom

    With the value 100 for right you move your text to the left