RecyclerView layoutmanager for changing row and column span
A little bit late, but it might help everyone else...
I was looking for the same and finally, after 2 days of googling I found a solution. Big thanks to Nick Butcher! His layout manager called SpannableGridLayoutManager
is capable of doing this. In my case I was doing a pattern like your first two rows:
Solution is easy:
1. Download SpannableGridLayoutManager from here
For some reason I had to change this line:
while (availableSpace > 0 && lastVisiblePosition < lastItemPosition) {
to
while (lastVisiblePosition < lastItemPosition) {
to got the manager working.
2. Set SpannableGridLayoutManger to your RecyclerView
In my case:
SpannedGridLayoutManager manager = new SpannedGridLayoutManager(
new SpannedGridLayoutManager.GridSpanLookup() {
@Override
public SpannedGridLayoutManager.SpanInfo getSpanInfo(int position) {
// Conditions for 2x2 items
if (position % 6 == 0 || position % 6 == 4) {
return new SpannedGridLayoutManager.SpanInfo(2, 2);
} else {
return new SpannedGridLayoutManager.SpanInfo(1, 1);
}
}
},
3, // number of columns
1f // how big is default item
);
Which gave me exactly what I wanted (numbers are position of item in adapter):
EDIT: error with styleable
Put those lines into attrs.xml
<declare-styleable name="SpannedGridLayoutManager">
<attr name="android:orientation" />
<attr name="spanCount" />
<attr name="aspectRatio" format="string" />
</declare-styleable>
Finally did it, it will help everyone who is trying to achieve any kind of patterns
I was looking for the same result but with one header and lazy loading footer. I tried @Kristyna answers of Nick Butcher Library too. But it has many issues like fast scrolling view disappear problem with the extra space or fixed cell height issue.
I found another library of Arasthel SpannedGridLayoutManager and tried to implement it. But it also has many issues like fixed height and footers extra space issue
Finally, after 5hr of digging Arasthel's SpannedGridLayoutManager, I fixed the issues and found my result.
My final edited forked library download from here SpannedGridLayoutManager.
In my case
val adapter = GridItemAdapter()//This is your adapter
val spannedGridLayoutManager = SpannedGridLayoutManager(orientation = VERTICAL, spans = 3)
spannedGridLayoutManager.itemOrderIsStable = true
recyclerview.layoutManager = spannedGridLayoutManager
And
spannedGridLayoutManager.spanSizeLookup = SpannedGridLayoutManager.SpanSizeLookup { position ->
when {
position == 0 -> {
/**
* 150f is now static
* should calculate programmatically in runtime
* for to manage header hight for different resolution devices
*/
SpanSize(3, 1, 150f)
}
position % 7 == 1 ->
SpanSize(2, 2)
else ->
SpanSize(1, 1)
}
}
recyclerview.adapter = adapter
This spanSizeLookup logic may vary according to the requirement, for me I had set it randomly for testing purposes.