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ReactNativeのFlatlistでデフォルトでレンダリングされる数を変更する

Posted at

Flatlistのデフォルトでレンダリングされる数は10ですが、
ScrollToIndexとかを使うときにこんなエラーが出て困ったりします.

Invariant Violation: scrollToIndex should be used in conjunction withgetItemLayout or onScrollToIndexFailed,
otherwise there is no way to know the location of offscreen indices or handle failures.

#解決

initialNumToRender={レンダリングする数}でデフォルトででレンダリングされる数を変更できます.

<Flatlist
   ...
    initialNumToRender={9999}
   ...
 />
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