RecyclerView Bug：IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter的解决方案（转）

转自:RecyclerView Bug：IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter的解决方案

RecyclerView是Android-support-v7-21版本中新增的一个Widget，RecyclerView在刷新数据的时候会出现以下异常：

[java] view plain copy

1. java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter positionViewHolder{431a7450 position=1 id=-1, oldPos=-1, pLpos:-1 scrap [attachedScrap] tmpDetached no parent}
2. at android.support.v7.widget.RecyclerView$Recycler.validateViewHolderForOffsetPosition(RecyclerView.java:4251)
3. at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4382)
4. at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4363)
5. at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1961)
6. at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1370)
7. at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1333)
8. at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:562)
9. at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2900)
10. at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3071)
11. at android.view.View.layout(View.java:14828)
12. at android.view.ViewGroup.layout(ViewGroup.java:4631)
13. at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:584)
14. at android.view.View.layout(View.java:14828)
15. at android.view.ViewGroup.layout(ViewGroup.java:4631)
16. at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
17. at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
18. at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
19. at android.view.View.layout(View.java:14828)
20. at android.view.ViewGroup.layout(ViewGroup.java:4631)
21. at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
22. at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
23. at android.view.View.layout(View.java:14828)
24. at android.view.ViewGroup.layout(ViewGroup.java:4631)
25. at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
26. at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
27. at android.view.View.layout(View.java:14828)
28. at android.view.ViewGroup.layout(ViewGroup.java:4631)
29. at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1055)
30. at android.view.View.layout(View.java:14828)
31. at android.view.ViewGroup.layout(ViewGroup.java:4631)
32. at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
33. at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
34. at android.view.View.layout(View.java:14828)
35. at android.view.ViewGroup.layout(ViewGroup.java:4631)
36. at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
37. at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
38. at android.view.View.layout(View.java:14828)
39. at android.view.ViewGroup.layout(ViewGroup.java:4631)
40. at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
41. at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
42. at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
43. at android.view.View.layout(View.java:14828)
44. at android.view.ViewGroup.layout(ViewGroup.java:4631)
45. at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
46. at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
47. at android.view.View.layout(View.java:14828)
48. at android.view.ViewGroup.layout(ViewGroup.java:4631)
49. at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
50. at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
51. at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
52. at android.view.View.layout(View.java:14828)
53. at android.view.ViewGroup.layout(ViewGroup.java:4631)
54. at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
55. at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
56. at android.view.View.layout(View.java:14828)
57. at android.view.ViewGroup.layout(ViewGroup.java:4631)
58. at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2074)
59. at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1831)
60. at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1087)
61. at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5696)
62. at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
63. at android.view.Choreographer.doCallbacks(Choreographer.java:574)
64. at android.view.Choreographer.doFrame(Choreographer.java:544)
65. at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
66. at android.os.Handler.handleCallback(Handler.java:733)
67. at android.os.Handler.dispatchMessage(Handler.java:95)
68. at android.os.Looper.loop(Looper.java:136)
69. at android.app.ActivityThread.main(ActivityThread.java:5016)
70. at java.lang.reflect.Method.invokeNative(Native Method)
71. at java.lang.reflect.Method.invoke(Method.java:515)
72. at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
73. at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:608)
74. at dalvik.system.NativeStart.main(Native Method)

大家看这个代码，只是并没有报到我们自己的代码里面来，在底层就崩溃了，在app层面并没有，弹出一个框，说应用程序已奔溃，而是直接就没了，用户感觉很奇怪。这种异常并不是很容易出现，而是偶尔出现，我的也是在后台奔溃日志中，发现了这种异常，我们自己都不知道什么地方报错的，搜索百度，发现有个链接的权重比较高，看的人也比较多：

http://drakeet.me/recyclerview-bug-indexoutofboundsexception-inconsistency-detected-invalid-item-position-solution?utm_source=tuicool&utm_medium=referral
但是，这篇文章写得比较模糊，解决方案也只是给出一个代码片段，我都不知道怎么加进去，之后我用google去搜索，发现这个问题很普遍，很多都是偶尔出现，很难去重现他，终于在stackoverflow上找到了一个解决方法，链接如下：

http://stackoverflow.com/questions/31759171/recyclerview-and-java-lang-indexoutofboundsexception-inconsistency-detected-in

其实也不是什么解决方法，只是把这个异常捕获了，不让他奔溃了，这个问题的终极解决方案还是得让google去修复。

1、创建一个类LinearLayoutManagerWrapper继承LinearLayoutManager，重写onLayoutChildren方法

[java] view plain copy

1. public class WrapContentLinearLayoutManager extends LinearLayoutManager {
2. public WrapContentLinearLayoutManager(Context context) {
3. super(context);
4. }
5. public WrapContentLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {
6. super(context, orientation, reverseLayout);
7. }
8. public WrapContentLinearLayoutManager(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
9. super(context, attrs, defStyleAttr, defStyleRes);
10. }
11. @Override
12. public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
13. try {
14. super.onLayoutChildren(recycler, state);
15. } catch (IndexOutOfBoundsException e) {
16. e.printStackTrace();
17. }
18. }
19. }

2、设置RecyclerView的布局管理为WrapContentLinearLayoutManager对象

[java] view plain copy

1. mRecyclerView.setLayoutManager(new WrapContentLinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));

我经过大量的测试，发现这个异常真的被catch了，没有再出现这种崩溃的问题了，大功告成，希望对大家有所帮助！！！