RecyclerView IndexOutOfBoundsException 问题

在项目中遇到一个RecyclerView 偶现的奔溃，查看日志，发现是： java.lang.IndexOutOfBoundsException: Index: 39, Size: 39 at java.util.LinkedList.checkElementIndex(LinkedList.java:555) at java.util.LinkedList.get(LinkedList.java:476) at android.support.v7.widget.RecyclerView.dispatchOnScrolled(RecyclerView.java:4844) at android.support.v7.widget.RecyclerView.dispatchLayoutStep3(RecyclerView.java:3909) at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3540) at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:4082) at android.view.View.layout(View.java:19781) at android.view.ViewGroup.layout(ViewGroup.java:6144) at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:606) at android.view.View.layout(View.java:19781) at android.view.ViewGroup.layout(ViewGroup.java:6144) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:19781) at android.view.ViewGroup.layout(ViewGroup.java:6144) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1816) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1660) at android.widget.LinearLayout.onLayout(LinearLayout.java:1569) at android.view.View.layout(View.java:19781)

猜测原因是，RecyclerView的对于的数据被更改，比如，RecyclerView 当前的List 的size是39，然后，把这个List 删除了一部分，这个操作没有及时调用RecyclerView的notify造成了。 由于项目这个List修改的地方很多，很底层，目前使用临时的解决方案(网上其他方案都无法彻底catch这个异常，有这个烦恼的，请查看下面的代码)，对异常进行try-catch 处理，具体代码如下：

public class LinearLayoutMgr extends LinearLayoutManager { public LinearLayoutMgr(Context context) { super(context); } public LinearLayoutMgr(Context context, int orientation, boolean reverseLayout) { super(context, orientation, reverseLayout); } public LinearLayoutMgr(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { super(context, attrs, defStyleAttr, defStyleRes); } @Override public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) { try { super.onLayoutChildren(recycler, state); } catch (Exception e) { e.printStackTrace(); LogUtil.d("catch exception"); } } @Override public void scrollToPosition(int position) { try { super.scrollToPosition(position); } catch (Exception e) { e.printStackTrace(); LogUtil.d("catch exception"); } } }

在初始化RecyclerView 的时候，使用这个LinearLayoutMgr 代替系统的LinearLayoutManager即可

转载于:https://www.cnblogs.com/bylijian/p/10372905.html

相关资源：数据结构—成绩单生成器