FlatList with getItemLayout(): Invariant Violation: Should not have to estimate frames when a measurement metrics function is provided

Is this a bug report?

yes

Environment

Environment: OS: Windows 10 x64 Node: 10.0 npm: 5.5.1 Watchman: 4.9.0

Packages: react-native: 0.50.0 react: 16.0.0

Target Platform: Android

Steps to Reproduce

Use a FlatList and pass in a getItemLayout prop

Expected Behavior

Everything works normal and I get a beautiful FlatList

Actual Behavior

The items are rendered but I get a red error screen of death stating the following:

Invariant Violation: TaskQueue: Error with task: Should not have to estimate frames when a measurement metrics function is provided

.

Reproducible Demo

Just return a <FlatList getItemLayout={() => { return {length: 33, index: 3, offset: 334} }} data={['asdf', 'sdfsdf']} renderItem={({item}) => <Text>{item}</Text>} /> from the render method of a component and let the magic happen

[bolan9999]

FlatList and SectionList is bad performance. Try this,please. may be it is a surprise for you

https://github.com/bolan9999/react-native-largelist

[ChrisLahaye]

@Phrosh Well if you expect someone to seriously help you, then you should come with a more detailed problem description. Your getItemLayout method needs to depend on index.