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Add Spacing to Recycler View Linear Layout Manager Using Item Decoration

Image
In this article we will learn about, item decoration in Android and how we can use it to add even spacing between the child items.
A RecyclerView without spacing will look like the image below but in most cases, we want to add spacing between the items. [You can see there are no margins between the views and only elevation]

A more traditional option is adding margins in the list item xml file. If we take this route, we will soon end up with uneven spacing issues with vertical margins. [There are even left, right, top, bottom margins for all the rows except the last item in the first image and in the subsequent image, the top margin for the first item is half of the other items]



The best way is to add the ItemDecoration to the RecyclerView as it affects the individual items and you can have more control over them.
Kotlin:
/** * Add vertical, horizontal spacing to the recycler view */ class DefaultItemDecorator(private val horizontalSpacing: Int, private val …