RecyclerView-错误收集：当你刷新RecyclerView程序崩掉的时候（1）_scrapped or attached views may not be recycled. is-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_36428870/article/details/78069037

本文针对Android开发中RecyclerView出现的java.lang.IllegalArgumentException错误进行了解析。该异常源于在数据刷新时错误地清空了列表数据。文章提供了具体的代码示例及修正方法，建议将列表清空操作置于数据成功加载之后。

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报错信息

摸着后脑勺，一脸懵逼地看着Android Studio打印着下面这段日志：

 java.lang.IllegalArgumentException: Scrapped or attached views may not be recycled. isScrap:false isAttached:true
                      at android.support.v7.widget.RecyclerView$Recycler.recycleViewHolderInternal(RecyclerView.java:5420)
                      at android.support.v7.widget.RecyclerView$Recycler.quickRecycleScrapView(RecyclerView.java:5506)
                      at android.support.v7.widget.RecyclerView$LayoutManager.removeAndRecycleScrapInt(RecyclerView.java:8023)
                      at android.support.v7.widget.RecyclerView.dispatchLayoutStep3(RecyclerView.java:3447)
                      at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3194)
                      at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3627)
                      at android.view.View.layout(View.java:16009)
                      at android.view.ViewGroup.layout(ViewGroup.java:5181)
                      at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1195)
                      at android.view.View.layout(View.java:16009)
                      at android.view.ViewGroup.layout(ViewGroup.java:5181)
                      at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1795)
                      at android.view.View.layout(View.java:16009)
                      at android.view.ViewGroup.layout(ViewGroup.java:5181)
                      at android.support.design.widget.HeaderScrollingViewBehavior.layoutChild(HeaderScrollingViewBehavior.java:131)
                      at android.support.design.widget.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:42)
                      at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:1367)
                      at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:849)

后来百度发现原因是：
onRefresh方法里的数据清空应该放在请求数据成功后再清空！

 mRecyclerView.setLoadingListener(new XRecyclerView.LoadingListener() {
            @Override
            public void onRefresh() {
                contents.clear();
                current_page = 1;
                netData(current_page + "");
                mRecyclerView.refreshComplete();
            }

            @Override
            public void onLoadMore() {
                current_page++;
                netData(current_page + "");
                mRecyclerView.loadMoreComplete();
            }
        });

其解决方法是：
将列表清空的方法放到获取到接口数据以后执行。

 @Override
                    protected void requestBody(List<BillListEntity> data) {
                            promptDialog.dismissImmediately();
                        if (contents.size() != 0 && "1".equals(current_page) ) {//剔除重复加载第一页
                            contents.clear();
                        }