RecyclerView inconsistency detected. Invalid line item

This may look like a repeating question, but it is not!

I get this rare crash on my RecyclerView

java.lang.IndexOutOfBoundsException: 
Inconsistency detected. 
Invalid item position 1(offset:1).state:4 at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5014).

I am sure that after changing the data, I do not miss notifications about this to the adapter!

Besides the crash, one thing I can't figure out with is that I'm using android.support.v7.widget.RecyclerView, and the crash is on line 5014 in this java file

CODE FROM RecyclerView.java where my crash occurred

 if (offsetPosition < 0 || offsetPosition >= mAdapter.getItemCount()) {
            throw new IndexOutOfBoundsException("Inconsistency detected. Invalid item "
                    + "position " + position + "(offset:" + offsetPosition + ")."
                    + "state:" + mState.getItemCount());
        }

so for this the failure either

offsetPosition < 0

or

offsetPosition >= mAdapter.getItemCount()

from the crash log it is clear my offsetPosition is 1, so

offsetPosition >= mAdapter.getItemCount()

must be true !! but in my adapter I implemented getItemCount, like this

@Override
public int getItemCount() {
    return list.size() + 3;
}

so at least getItemCount should return 3, so the 2nd statement also cannot be true.

full crash log

java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 1(offset:1).state:4
                                     at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5014)
                                     at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4970)
                                     at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2029)
                                     at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1414)
                                     at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1377)
                                     at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:578)
                                     at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3315)
                                     at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3124)
                                     at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3568)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
                                     at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
                                     at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
                                     at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
                                     at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.support.design.widget.HeaderScrollingViewBehavior.layoutChild(HeaderScrollingViewBehavior.java:131)
                                     at android.support.design.widget.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:42)
                                     at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:1364)
                                     at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:846)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:1197)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
                                     at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
                                     at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
                                     at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
                                     at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
                                     at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
                                     at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
                                     at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
                                     at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678)
                                     at android.view.View.layout(View.java:16651)
                                     at android.view.ViewGroup.layout(ViewGroup.java:5440)
                                     at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2183)
                                     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1943)

? !! !.

+4

Source: https://habr.com/ru/post/1674966/


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