NullPointerException in BindingViewHelper.java line 181

I am using instant search on 2 different screens. Both screens point to the same index but have different facet refinement values and different layout files for the hits item layout. Instant search is working on the home screen which is a fragment but it’s crashing on the other screen which is an activity. If I comment out/remove the home screen code, then the 2nd starts working again. I have attached the log below

java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getId()' on a null object reference
        at com.algolia.instantsearch.ui.databinding.BindingHelper.getFullAttribute(BindingHelper.java:181)
        at com.algolia.instantsearch.ui.views.Hits$HitsAdapter.onBindViewHolder(Hits.java:473)
        at com.algolia.instantsearch.ui.views.Hits$HitsAdapter.onBindViewHolder(Hits.java:409)
        at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6673)
        at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6714)
        at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5647)
        at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5913)
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5752)
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5748)
        at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2232)
        at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1559)
        at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1519)
        at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:614)
        at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3812)
        at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3529)
        at android.support.v7.widget.RecyclerView.consumePendingUpdateOperations(RecyclerView.java:1737)
        at android.support.v7.widget.RecyclerView$ViewFlinger.run(RecyclerView.java:4928)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
        at android.view.Choreographer.doCallbacks(Choreographer.java:723)
        at android.view.Choreographer.doFrame(Choreographer.java:655)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
        at android.os.Handler.handleCallback(Handler.java:790)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6494)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

Please let me know if you need more details.

[hackertronix]

Hi @PLNech, Sorry for the delayed response.

Variants did seem to fix my issue. Thanks for pointing it out. One small feedback; in my opinion the document could be better structured to cover all of the features of InstantSearch instead of the bare minimum ones, required to get started.

This would really help people in situations like these because honestly I spent way too much time scavenging the internet on how to fix the problem before deciding on opening an issue here 😅

[PLNech]

Your feedback is on point, we know of some shortcomings in our documentation and are working on a new structure and more guides to cover various use-cases.

This being said, your thoughts could be very useful to help us improve our docs!

• What kind of structure would be an improvement for you?
• Which topics/features do you think should be covered further?