Gif not loading when used as placeholder.

[larrytech7]

when i use a Gif as a drawable for my placeholder, the gif shows but doesn;t animate as expected or as it should. It's actually a gif to show 'loading' operation. If there's another way to make this happen i will be very grateful to learn, else if this is an issue, i need to know how to go about resolving it.

Glide Version:
3.7.0

Integration libraries:
None, just firebase

Device/Android Version:
Samsung Note 3, android 5.0 API Level 21

Issue details / Repro steps / Use case background:
Use a local gif as your placeholder resource

Glide load line / GlideModule (if any) / list Adapter code (if any):

Glide.with(context)
                    .load(imageUrl)
                    .crossFade()
                    .placeholder(R.drawable.loading)
                    .into(holder.mediaImage);

[TWiStErRob]

Sorry but using GIF as placeholder is not possible, see #659 for more info.