Deleting last segment error

[bahaahany2019]

Hi, I create segments at runtime all working fine my problem is in deleting the last segment for example if i have 3 segments i can delete the first & second without any problems but if i tried to delete the third the app crashes below is the delete code please advice.

btnDeleteSeg.setOnClickListener(new` View.OnClickListener()
    {
        @Override
        public void onClick (View v){
        bibleSegIndex = segmentedButtonGroup.getPosition();
        if (bibleSegIndex == 0) {
            segmentedButtonGroup.setPosition(0, false);
        } else {
            segmentedButtonGroup.setPosition(0, true);
        }
        segmentedButtonGroup.getButton(bibleSegIndex).setVisibility(View.GONE);
        segmentedButtonGroup.getButtons().remove(bibleSegIndex);
    }
    }