Horizontal FlatList inside sectionList
Horizontal FlatList inside SectionList in ReactNative
According to SectionList, one can create a SectionList with a section title and the items in the section in vertical fashion. Here I will show you what was the problem I faced while creating horizontal list items inside SectionList and the modifications I did to resolve it.My Output view should be like:
Initially My data is in the format mentioned by SectionList. Where each of the data item is an object.
sectionData = [
{title: 'abc', data:[{},{},{}]},
{title: 'abc', data:[{},{},{}]},
.....
]
And the render component will be like:<SectionList sections={sectionData} renderSectionHeader={({ section }) => ( <Text> {section.category}</Text> // layout changed in my screenshot )} renderItem={({ item, index, section
}) => ( <FlatList data={item} horizontal={true} renderItem={({ item }) => <Text>{item.name}</Text>} // placed images in my case /> )} />
So when i render sectionlist with this data the output will be like:
It is rendering multiple horizontal flatlists where number of flatlists = number of objects inside data.
Reason: sectionList will add each data item to the vertical list.
Work around: My tweak is if we change the data object a bit we can get the desired output.
sectionData = [
{title: 'abc', data:[[{},{},{}]]},
{title: 'abc', data:[[{},{},{}]]},
.....
]
Now if you pass this data to the sectionList, you can get the desired output.
How is the performance? if have to render above 50 images? I used the same technique but it is so lag. Did use windowSize, removeClippedSubviews, initialNumToRender, updateCellsBatchingPeriod in FLATLIST but does not improve anything
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DeleteThanks! :)
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