ExtraLayoutSpace of RecyclerView

kyobashi.dex #2 @amyu_san

ABOUT ME

▸ Name : Yuki Mima

▸ Twitter : @amyu_san

▸ github : amyu

▸ Work : Android App Engineer

Why do you use RecyclerView

I can not be implemented in the ListView

The good point of RecyclerView

▸ Easy implementation of Animation

▸ Easy implementation of pre-load

▸ Easy implementation of Cache

What is ExtraLayoutSpace

▸ The amount of extra space that should be laid out by LayoutManager.

ExtraLayoutSpace = 0

https://www.youtube.com/watch?v=1xMNmMjqEbI

ExtraLayoutSpace = Display Heigh

https://www.youtube.com/watch?v=4c7ZID7yjII

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)

Laying out invisible elements will eventually come with performance cost!

But it improves user experience!!!!

Try to use!

ExtraLayoutSpace of RecyclerView

Technology

Transcript of ExtraLayoutSpace of RecyclerView

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