Comments (2)
Old issue but I didn't use this before so maybe this is helpful for others that are searching in 2019. Workaround in Kotlin:
class ListAdapter(
private val items: List<ListObject>
) : RecyclerView.Adapter<RecyclerView.ViewHolder>(), StickyHeaders {
private var stickyHeadersObserver: RecyclerView.AdapterDataObserver? = null
override fun registerAdapterDataObserver(observer: RecyclerView.AdapterDataObserver) {
super.registerAdapterDataObserver(observer)
if (observer::class.java.enclosingClass == StickyHeadersLinearLayoutManager::class.java) {
stickyHeadersObserver = observer
}
}
override fun unregisterAdapterDataObserver(observer: RecyclerView.AdapterDataObserver) {
super.unregisterAdapterDataObserver(observer)
if (observer == stickyHeadersObserver) {
stickyHeadersObserver = null
}
}
fun updateItems(newItems: List<ListObject>) {
// Create a DiffUtil.DiffResult and dispatch it
getListDiff(items, newItems).dispatchUpdatesTo(this)
this.items= newItems
stickyHeadersObserver?.onChanged()
}
}
Basically you can catch the observer and then call onchanged yourself after setting the new items. Because the observer class is a private inner class of StickyHeadersLinearLayoutManager, we check if the enclosing class is that one and therefore we know we have the correct observer. This is made with version 1.0.1.
from stickyheaders.
I personally use SortedList
(https://developer.android.com/reference/android/support/v7/util/SortedList) in my SectioningAdapter
(one for each section)
from stickyheaders.
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from stickyheaders.