ExtraLayoutSpace of RecyclerView
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This document discusses the RecyclerView component in Android and the concept of ExtraLayoutSpace. It is authored by Yuki Mima, an Android app engineer. ExtraLayoutSpace refers to the amount of extra space that the LayoutManager can use to pre-load views for smooth scrolling. The document recommends overriding the LinearLayoutManager's getExtraLayoutSpace method to implement custom pre-caching logic, though it notes this may have performance costs versus user experience benefits.
ExtraLayoutSpace of RecyclerView
- 2. ABOUT ME ▸ Name : Yuki Mima ▸ Twitter : @amyu_san ▸ github : amyu ▸ Work : Android App Engineer
- 3. Why do you use RecyclerView
- 4. I can not be implemented in the ListView
- 5. TEXT The good point of RecyclerView ▸ Easy implementation of Animation ▸ Easy implementation of Animation ▸ Easy implementation of Animation ▸ Easy implementation of Animation ▸ Easy implementation of pre-load ▸ Easy implementation of Cache
- 6. TEXT What is ExtraLayoutSpace ▸ The amount of extra space that should be laid out by LayoutManager.
- 11. TEXT How to implement ▸ Override the LinearLayoutManager#getExtraLayoutSpace Returns the amount of extra space that should be laid out by LayoutManager. By default, LinearLayoutManager lays out 1 extra page of items while smooth scrolling and 0 otherwise. You can override this method to implement your custom layout pre-cache logic. protected int getExtraLayoutSpace (RecyclerView.State state)
- 13. Laying out invisible elements will eventually come with performance cost!
- 14. But it improves user experience!!!!
- 15. Try to use!