android gridview viewholder button onclick
//add a viewholder to your adapter!!!!!!!!!!!!!!!!
holder.button = convertView.findViewById(R.id.group_button);
holder.button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Bundle bundle = new Bundle();
bundle.putString("buttonText", holder.button.getText().toString());
ChatRoomFragment chatRoomFragment = new ChatRoomFragment();
chatRoomFragment.setArguments(bundle);
((NavigationHost) context).navigateTo(chatRoomFragment, true);
}
});