Get the list of fragment and call each one with the parameters :P
You need to call supportPostponeEnterTransition() on create to wait until Picasso have the image loaded and then start the posponed animation with supportStartPostponedEnterTransition.
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Check if you want to know more tips check faster/boost gradle builds (2/2) - enjoy local cache
Just need to use a @Body param with a TypedFile: