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TonicArtos / SuperSLiM

A layout manager for the RecyclerView with interchangeable linear, grid, and staggered displays of views, all with configurable section headers including the sticky variety as specified in the material design docs.
http://tonicartos.nz
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Crash On RecyclerView Refresh #223

Open tyforcode opened 7 years ago

tyforcode commented 7 years ago

Hi,

SuperSLiM's been a great library so far. Unfortunately, a bug came up which I can't seem to figure out. The library and layoutmanager work fine when first set of items. However, the layout manager crashes when "notifyItemChanged" is called from the adapter. The dataset I'm using happened to have alternating header/content entries. The current work around I'm using entails creating a new adapter with the new data and replacing the old one attached to the RecyclerView like so:

list.setAdapter(null); listAdapter = new ListAdapter(newData); list.setAdapter(listAdapter);

The support library I'm using is version 25.3.1. Here's the full stack trace:

java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewGroup$LayoutParams android.view.View.getLayoutParams()' on a null object reference at android.support.v7.widget.RecyclerView$LayoutManager.getPosition(RecyclerView.java:7949) at com.tonicartos.superslim.LayoutManager.onItemsUpdated(LayoutManager.java:530) at android.support.v7.widget.RecyclerView$LayoutManager.onItemsUpdated(RecyclerView.java:9366) at android.support.v7.widget.RecyclerView$6.dispatchUpdate(RecyclerView.java:863) at android.support.v7.widget.RecyclerView$6.onDispatchSecondPass(RecyclerView.java:874) at android.support.v7.widget.AdapterHelper.consumeUpdatesInOnePass(AdapterHelper.java:570) at android.support.v7.widget.RecyclerView.processAdapterUpdatesAndSetAnimationFlags(RecyclerView.java:3256) at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3050) at android.view.View.measure(View.java:18794) at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715) at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461) at android.view.View.measure(View.java:18794) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:18794) at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1658) at android.view.View.measure(View.java:18794) at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715) at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461) at android.view.View.measure(View.java:18794) at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:1081) at android.view.View.measure(View.java:18794) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:18794) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) at android.widget.LinearLayout.measureVertical(LinearLayout.java:748) at android.widget.LinearLayout.onMeasure(LinearLayout.java:630) at android.view.View.measure(View.java:18794) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:18794) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139) at android.view.View.measure(View.java:18794) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) at android.widget.LinearLayout.measureVertical(LinearLayout.java:748) at android.widget.LinearLayout.onMeasure(LinearLayout.java:630) at android.view.View.measure(View.java:18794) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:18794) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) at android.widget.LinearLayout.measureVertical(LinearLayout.java:748) at android.widget.LinearLayout.onMeasure(LinearLayout.java:630) at android.view.View.measure(View.java:18794) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at com.android.internal.policy.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2643) at android.view.View.measure(View.java:18794) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2100) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1216)