Nikola Protrka CHALLENGES AND Kristijan Marić ASPECTS OF ...
Infinum Android Talks #18 - Create fun lists by Ivan Marić
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We're an independent design & development agency.
Transcript of Infinum Android Talks #18 - Create fun lists by Ivan Marić
We're an independent design & development agency.
Create fun lists (fun for the user)
IVAN MARIĆ
RECYCLER VIEW
Replaces ListView and GridView
Force usage of ViewHolder pattern
More work for a developer
MANUAL WORK
No dividers
No onItemClickListener
LayoutManager
ANIMATIONS
http://stackoverflow.com/questions/3928193/how-to-animate-addition-or-removal-of-android-listview-rows
HOW ANIMATION WORKS
RecyclerView.ItemAnimator
DefaultItemAnimator
animateAppearance() → notifyItemInserted(int)
animateChange() → notifyItemChanged(int)
animateDisappearance() → notifyItemRemoved(int)
animatePersistence() → notifyItemMoved(int, int)
RecyclerView.ItemAnimator RecyclerView.Adapter
SIMPLE ITEM ANIMATOR
animateAdd
animateMove
animateChange
animateRemove
https://github.com/wasabeef/recyclerview-animators
BEFORE YOU START TO CODE
21 Animators
5 Adapters
3000+ stars
DO’S AND DON’TS
PREPARE HOLDER FOR ANIMATION
Initialize view properties before animation start
When saving for run pending
RESET ANIMATIONS
endAnimation(ViewHolder)
Missing views
Ghost Views
ALWAYS CALL DISPATCH END
dispatchMoveFinished
dispatchAddFinished
dispatchRemoveFinished
dispatchChangeFinished
WATCH ANIMATIONS ORDER
runPendingAnimations
Depends on the desired behaviour
Animation start delay
DECORATOR ANIMATIONS
Dividers draw over the items
Animate in the ItemDecoration
Move decoration into the view
PREDICTIVE ANIMATIONS
Animate holder currently not visible
Could cause problems with multiple view types
Option to turn off
Any questions? [email protected] IVAN MARIĆ
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