[QUESTION] Updating existing DataManager and ItemBinder of the changes in model or list

[premacck]

Is there any way to update just the existing DataManager object and its associated ItemBinder, when the model is updated/changed (in an adapter of multiple DataManagers and ItemBinders)?

[DevAhamed]

Hi, 2.x version has been released with this feature. Kindly let me know if its working out for you.

[nidhinek]

App get crashed while calling notifyDataSetChanged. I am using 2.x version Logs java.lang.ClassCastException: com.bestlaysoft.arivu.viewItems.HeaderItemBinder$HeaderViewHolder cannot be cast to com.bestlaysoft.arivu.viewItems.SingleClassItem$SingleClassViewHolder at com.bestlaysoft.arivu.viewItems.SingleClassItem.bindViewHolder(SingleClassItem.java:22) at mva2.adapter.MultiViewAdapter.onBindViewHolder(MultiViewAdapter.java:453) at mva2.adapter.MultiViewAdapter.onBindViewHolder(MultiViewAdapter.java:66) at androidx.recyclerview.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6986) at androidx.recyclerview.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5903) at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6170) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6009) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6005) at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2302) at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1627) at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1587) at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:665) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4040) at androidx.recyclerview.widget.RecyclerView.onMeasure(RecyclerView.java:3446) at android.view.View.measure(View.java:23355) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6758) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1535) at android.widget.LinearLayout.measureVertical(LinearLayout.java:825) at android.widget.LinearLayout.onMeasure(LinearLayout.java:704) at android.view.View.measure(View.java:23355) at androidx.recyclerview.widget.RecyclerView$LayoutManager.measureChildWithMargins(RecyclerView.java:9261) at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1653) at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1587) at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:665) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4040) at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3757) at androidx.recyclerview.widget.RecyclerView.consumePendingUpdateOperations(RecyclerView.java:1869) at androidx.recyclerview.widget.RecyclerView$1.run(RecyclerView.java:412) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1172) at android.view.Choreographer.doCallbacks(Choreographer.java:984) at android.view.Choreographer.doFrame(Choreographer.java:806) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1158) at android.os.Handler.handleCallback(Handler.java:873) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6863) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

[DevAhamed]

Hi @nidhinek, It might be because of the incorrect value returned from ItemBinder's (SingleClassItem) 'canBindData()' method. Note : This is a complete different issue from the original thread, so please file a separate issue if you are still facing any problems.