what is the best way to do a button group that can be selected and activate independently?

Question

I\'m trying to do in android a group of buttons that can be selected and activate only one of them. I need to work with the same logic of a radiogroup and radiobuttons.

Answer 1

You could still use Radio Buttons inside a Radio Group, and attributes to make each radio button look like a button.

In xml, for each radio button set android:button="@null", so that dots won't be visible. You could add some padding to make it look different.

In code, set a CheckedChangeListener to your radioGroup, then find the reference to the checkedView (RadioButton) with checkedId. In this example I've just changed the background color of the view, but you could add a different background too. If the radioButton is not null, it means it has already been changed, so I'll set its initial state again.

radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
  @Override
  public void onCheckedChanged(RadioGroup group, int checkedId) {
    if (radioButton != null) {
      radioButton.setBackgroundColor(Color.TRANSPARENT);
      radioButton.setButtonDrawable(0); // removes the image
    }
    radioButton = (RadioButton) group.findViewById(checkedId);
    radioButton.setBackgroundColor(Color.YELLOW);
    radioButton.setButtonDrawable(R.drawable.icon); //sets the image
  }
});

Hope this helps!