问题描述
我正在使用RecyclerView作为列表来显示可以下载的歌曲.每个项目的View中都有ProgressBar.下载开始时，我使用Handler通知每个项目更新ProgressBar以显示歌曲的下载进度.
I'm using RecyclerView as a list to show songs that can be downloaded. Each item has ProgressBar in its View. When the download starts, then I use a Handler to notify each item to update the ProgressBar to show the song download progress.
第二季度.当我们使用adapter.notifyItemChanged(position);更新单个项目的内容时，RecyclerView崩溃.使用Runnable从Handler调用它.但是，日志中没有显示我的代码的任何痕迹.为什么?
Q2. RecyclerView gets crashed when we use adapter.notifyItemChanged(position); to update the content of single item. It is called from a Handler using Runnable. But, the log don't show any traces for my code. Why?
以下是此问题的日志:
05-06 19:09:45.804: E/AndroidRuntime(32115): FATAL EXCEPTION: main
05-06 19:09:45.804: E/AndroidRuntime(32115): java.lang.IllegalArgumentException: Tmp detached view should be removed from RecyclerView before it can be recycled: ViewHolder{41b7bec0 position=6 id=-1, oldPos=-1, pLpos:-1 update changed tmpDetachedundefined adapter position no parent}
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.support.v7.widget.RecyclerView$Recycler.recycleViewHolderInternal(RecyclerView.java:3861)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.support.v7.widget.RecyclerView.removeAnimatingView(RecyclerView.java:779)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.support.v7.widget.RecyclerView.access$5300(RecyclerView.java:127)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.support.v7.widget.RecyclerView$ItemAnimatorRestoreListener.onAddFinished(RecyclerView.java:8228)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.support.v7.widget.RecyclerView$ItemAnimator.dispatchAddFinished(RecyclerView.java:8573)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.support.v7.widget.DefaultItemAnimator$5.onAnimationEnd(DefaultItemAnimator.java:239)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.support.v4.view.ViewPropertyAnimatorCompatJB$1.onAnimationEnd(ViewPropertyAnimatorCompatJB.java:47)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.view.ViewPropertyAnimator$AnimatorEventListener.onAnimationEnd(ViewPropertyAnimator.java:973)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1012)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.animation.ValueAnimator.access$400(ValueAnimator.java:51)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:623)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.animation.ValueAnimator$AnimationHandler.run(ValueAnimator.java:639)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.view.Choreographer.doCallbacks(Choreographer.java:579)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.view.Choreographer.doFrame(Choreographer.java:547)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.os.Handler.handleCallback(Handler.java:725)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.os.Handler.dispatchMessage(Handler.java:92)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.os.Looper.loop(Looper.java:153)
05-06 19:09:45.804: E/AndroidRuntime(32115): at android.app.ActivityThread.main(ActivityThread.java:5297)
05-06 19:09:45.804: E/AndroidRuntime(32115): at java.lang.reflect.Method.invokeNative(Native Method)
05-06 19:09:45.804: E/AndroidRuntime(32115): at java.lang.reflect.Method.invoke(Method.java:511)
05-06 19:09:45.804: E/AndroidRuntime(32115): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
05-06 19:09:45.804: E/AndroidRuntime(32115): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
05-06 19:09:45.804: E/AndroidRuntime(32115): at dalvik.system.NativeStart.main(Native Method)
我进行了搜索以找到解决方案，但找不到任何合适的答案.
I searched to find the solution for this but couldn't find any appropriate answer.
推荐答案
我们的应用程序中也遇到了这个问题，经过长时间的真正调试之后，我们发现这是由
We also had this issue on our application, and after a really long debugging session we found out that it was caused by adapter.setHasStableIds(true)
我们删除了违规行，问题终于消失了.
We removed the offending line and the issue is finally gone.
希望有帮助.
这篇关于使用Runnable从处理程序中使用notifyItemChanged时，RecyclerView崩溃[IllegalArgumentException]的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！