Programmatically-added RadioButtons refuse to obey LayoutParams weighting

Question

I\'m trying to create a RadioGroup within an Android layout where the child RadioButtons are stretched to evenly fill the entire width of the

Answer 1

I ran into this issue too, I used the RadioGroup.LayoutParams with weight defined. However I also found once I'd created programatically the buttons weren't responding to touch so set clickable and enabled to true and that fixed things.

  private RadioButton createMyTypeRadioButton(MyType type){

    //create using this constructor to use some of the style definitions
    RadioButton radio = new RadioButton(this, null, R.style.MyRadioStyle);

    RadioGroup.LayoutParams layoutParams = new RadioGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, 1f);
    radio.setLayoutParams(layoutParams);
    radio.setGravity(Gravity.CENTER);

    //tag used by the setOnCheckedChangeListener to link the radio button with mytype object
    radio.setTag(type.getId());

    //enforce enabled and clickable status otherwise they ignore clicks
    radio.setClickable(true);
    radio.setEnabled(true);

    radio.setText(type.getTitle());


    return radio;
}

private void updateMyTypesUi() {

    //populate RadioGroup with permitted my types
    for (int i = 0; i < myTypes.size(); i++) {
        MyType type = myTypes.get(i);           
        RadioButton radioButton = createSwapTypeRadioButton(type);
        myRadioGrp.addView(radioButton);

    }

    myRadioGrp.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(RadioGroup group, int checkedId) {
            RadioButton checkedType = (RadioButton) group.findViewById(checkedId);              
            String idOfMyTypeChecked = (String) checkedType.getTag();
            //do something with idOfMyTypeChecked
        }
    });
}