[Chip] Support ChipGroup.setOnCheckedChangeListener() regardless of single selection mode

Please consider supporting ChipGroup.setOnCheckedChangeListener() without app:singleSelection="true".

[nclaff89]

@gabrielemariotti thanks for the quick reply. I ended up just making a custom chip and overriding performClick(). I need to be able to react to the state of each individual chip, while multiple are selected. the chips are created at run time, not in the lay out and i need to be able to have singleSelection = false. When a user checks a chip I need to update my UI to display a banner based off if the chips are selected and if a boolean corresponding to one of the chips is true.

EDIT: @gabrielemariotti I ended up playing with it more, and what you suggested worked. I must have been missing something earlier. Thanks again for your speedy response. It is much appreciated.

[tatsuyafujisaki]

@wcshi I use multiple ChoiceGroup(s).

For some ChoiceGroup, I use single-selection chips and add an OnCheckedChangeListener on the ChoiceGroup. For other ChoiceGroup, I use multiple-selection chips and add an OnClickListener (or an OnCheckedChangeListener) on each chip.

It is OK, but it would be great if I could implement listeners in the same way among different ChoiceGroup(s) for maintainability.