recyclerview/androidx.recyclerview.widget/GridLayoutManager/SpanSizeLookup

SpanSizeLookup

abstract class SpanSizeLookup(source)

A helper class to provide the number of spans each item occupies.

Default implementation sets each item to occupy exactly 1 span.

See also

Inheritors

Constructors

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constructor()

Functions

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open fun getSpanGroupIndex(adapterPosition: Int, spanCount: Int): Int
Returns the index of the group this position belongs.
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open fun getSpanIndex(position: Int, spanCount: Int): Int
Returns the final span index of the provided position.
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abstract fun getSpanSize(position: Int): Int
Returns the number of span occupied by the item at position.
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open fun invalidateSpanGroupIndexCache()
Clears the span group index cache.
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open fun invalidateSpanIndexCache()
Clears the span index cache.
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open fun isSpanGroupIndexCacheEnabled(): Boolean
Returns whether results of getSpanGroupIndex method are cached or not.
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open fun isSpanIndexCacheEnabled(): Boolean
Returns whether results of getSpanIndex method are cached or not.
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open fun setSpanGroupIndexCacheEnabled(cacheSpanGroupIndices: Boolean)
Sets whether the results of getSpanGroupIndex method should be cached or not.
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open fun setSpanIndexCacheEnabled(cacheSpanIndices: Boolean)
Sets whether the results of getSpanIndex method should be cached or not.