RecycleView异常Added View has RecyclerView as parent but view is not a real child. Unfiltered index:0_at android.support.v7.widget.recyclerview$layoutma-优快云博客

本文分析了Android RecyclerView出现java.lang.IllegalStateException异常的原因，并提供了解决方案。异常发生在RecyclerView同时执行下拉刷新和加载更多操作时。

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Android RecycleView 异常

java.lang.IllegalStateException:Added View has RecyclerView as parent but view is not a real child. Unfiltered index:0

log日志:

07-16 14:54:12.075: E/AndroidRuntime(20475): java.lang.IllegalStateException:
Added View has RecyclerView as parent but view is not a real child. Unfiltered
index:0
07-16 14:54:12.075: E/AndroidRuntime(20475):     at
android.support.v7.widget.RecyclerView$LayoutManager.addViewInt(RecyclerView.java:6720)
07-16 14:54:12.075: E/AndroidRuntime(20475):     at
android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:6686)
07-16 14:54:12.075: E/AndroidRuntime(20475):     at
android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:6674)

在使用RecycleView中偶尔出现了该异常

追踪该异常发现出自

android.support.v7.widget.RecyclerView$LayoutManager.addViewInt(RecyclerView.java:6720)

if (child.getParent() == mRecyclerView) { // it was not a scrap but a valid child
                // ensure in correct position
                int currentIndex = mChildHelper.indexOfChild(child);
                if (index == -1) {
                    index = mChildHelper.getChildCount();
                }
                if (currentIndex == -1) {
                    throw new IllegalStateException("Added View has RecyclerView as parent but"
                            + " view is not a real child. Unfiltered index:"
                            + mRecyclerView.indexOfChild(child));
                }
                if (currentIndex != index) {
                    mRecyclerView.mLayout.moveView(currentIndex, index);
                }
            }

发现异常原因是 :

recycleView同时进行 "下拉刷新" 和 "加载更多" 而产生冲突 .

recycleView 执行异步的"加载更多"操作后 , 当调用recycleView 的addviewInt方法填充数据时, 发现列表已经被"下拉刷新"删除了. 找不到常规的child.

解决异常:

禁止 RecycleView "下拉刷新" 和 "加载更多" 同时执行 .

同一时间只允许用户使用一种动作 (即: 刷新不加载加载不刷新 )

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谢谢