Android: how to group buttons?

Question

Hello, in my application I have a textview with a question and then I have 3 buttons that are the possible options for the answer.

Can anyone tell me how to group these 3 buttons to have a kind of Group Buttons, is there any way to do this? (if they were radio Uttons would use RadioGroup as container, but for normal buttons there is some way to do it?)

Thank you.

Answer 1

There is no component that does this for you similar to RadioGroup. You have to do this via code, something like:

...
firstButton.setOnClickListener(new View.OnClickListener() {
    @Override
        public void onClick(View v) {
            changeButtonState(true, false, false);
        }
});
secondButton.setOnClickListener(new View.OnClickListener() {
    @Override
        public void onClick(View v) {
            changeButtonState(false, true, false);
        }
});

thirdButton.setOnClickListener(new View.OnClickListener() {
    @Override
        public void onClick(View v) {
            changeButtonState(false, false, true);
        }
});
...

And to change the state of your Button:

private void changeButtonState(boolean first, boolean second, boolean third) {
    // caso você queira alterar a cor do botao selecionado
    if (first) {
        firstButton.setColorFilter(R.color.yourColor);
        secondButton.setColorFilter(R.color.yourColor2);
        thirdButton.setColorFilter(R.color.yourColor2);
    } else if (second) {
        firstButton.setColorFilter(R.color.yourColor2);
        secondButton.setColorFilter(R.color.yourColor);
        thirdButton.setColorFilter(R.color.yourColor2);
    } else {
        firstButton.setColorFilter(R.color.yourColor2);
        iBtnRatingMedium.setColorFilter(R.color.yourColor2);
        thirdButton.setColorFilter(R.color.yourColor);
    }

    firstButton.setSelected(first);
    secondButton.setSelected(second);
    thirdButton.setSelected(third);
}