Spinner does not support multiple view types [36928962]

WAI

Bug

Status Update

No update yet.

Description

sh...@gmail.com

created issue #1

May 25, 2011 04:44AM

I have my own sub-class of BaseAdapter. I use Spinner#setAdapter to set the adapter to my sub-class. However, #getViewTypeCount and #getItemViewType do not get called. The expected behavior should be that #getViewTypeCount actually gets called.

The source code shows that Spinner#DropDownAdapter delegate most calls to the injected adapter, except for #getViewTypeCount and #getItemViewType which just return 1 and 0 respectively.

I am using Honeycomb. The workaround is to unify all the different view types into a single layout view, and hide all except one of the views.

Comments

ar...@gmail.com <ar...@gmail.com> #2Mar 7, 2012 06:00AM

Thanks for the report. I was puzzled.

pa...@gmail.com <pa...@gmail.com> #3Nov 27, 2012 03:17PM

The same for me. Android 4.0.4.

al...@android.com <al...@android.com> #4Jul 26, 2013 07:13PM

Status: Won't Fix (Intended Behavior)

This is intentional to reduce complexity of Spinner's API and implementation. Consider using a full-blown ListView in a dialog instead.

be...@gmail.com <be...@gmail.com> #5Jul 30, 2013 08:05AM

Here is a proposed workaround:

http://stackoverflow.com/questions/16398468/why-is-android-recycling-the-wrong-view-type-in-my-spinneradapter

mi...@mictale.com <mi...@mictale.com> #6Dec 23, 2013 08:06PM

I just spent 3 hours on this issue and I disagree that it is "working as intended". If you want to make developers happy, fail fast.

Spinner$DropDownAdapter wraps the client's adapter and shadows getItemViewType() and getViewTypeCount() and simply returns constants. This will never work as intended if the inner adapter has more view types.

I suggest the DropDownAdapter constructor asserts if adapter.getViewTypeCount() != 1.

j2...@gmail.com <j2...@gmail.com> #7Jun 22, 2014 12:09AM

THIS NEEDS TO BE FIXED.

ar...@gmail.com <ar...@gmail.com> #8Apr 27, 2015 09:50AM

What's going on with this issue?

[Deleted User] <[Deleted User]> #9Aug 14, 2015 12:57AM

Implementation of Spinner.setAdapter() has changed in API 21 to enforce this, and now throws an exception.
From setAdapter's documentation:

On API LOLLIPOP and above, attempting to set an adapter with more than one view type will throw an IllegalArgumentException.