悬案解决： java.lang.IndexOutOfBounds

monkey经常会出现这个问题：
java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 6(offset:6).state:11 androidx.recyclerview.widget.RecyclerView错误
不幸的是新项目，手点，也能点出此问题

第一种：解决方案：包装LinearLayoutManager

public class RecyclerViewNoBugLinearLayoutManager extends LinearLayoutManager {
    public RecyclerViewNoBugLinearLayoutManager(Context context) {
        super( context );
    }

    public RecyclerViewNoBugLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {
        super( context, orientation, reverseLayout );
    }

    public RecyclerViewNoBugLinearLayoutManager(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super( context, attrs, defStyleAttr, defStyleRes );
    }

    @Override
    public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
        try {
            //try catch一下
            super.onLayoutChildren( recycler, state );
        } catch (IndexOutOfBoundsException e) {
            e.printStackTrace();
        }

    }
}

问题存在。

相关链接：https://www.jianshu.com/p/7c675d5d2074

最终问题解决：

 private fun beginSearch() {
      mSearchResultListData.clear()
        val keyWords = etSearchTrim
        OkGoUtils.getRequest(
            ConstantUtils.getUrlConstant().video_searcher + "?keywords=" + keyWords + "&page=1",
            object : JsonCallBack<SeacherListBean>(SeacherListBean::class.java, this) {
                override fun onCacheSuccess(response: Response<SeacherListBean>?) {
                    //                super.onCacheSuccess(response);
                }

                override fun onSuccess(response: Response<SeacherListBean>) {
                    //获取搜索内容
              
                    val body = response.body()
                    et_seacher!!.setText(keyWords)
                    type = 0
                    mSearchResultListData.addAll(body.data)
                    if (mSearchResultListData.size > 0) {
                        mSearchResultAdapter!!.setNewData(mSearchResultListData)
                        refreshSearchResult(body.total)
                    } else {
                        showNoData()
                    }
                }
            })
    }

 private fun beginSearch() {

        val keyWords = etSearchTrim
        OkGoUtils.getRequest(
            ConstantUtils.getUrlConstant().video_searcher + "?keywords=" + keyWords + "&page=1",
            object : JsonCallBack<SeacherListBean>(SeacherListBean::class.java, this) {
                override fun onCacheSuccess(response: Response<SeacherListBean>?) {
                    //                super.onCacheSuccess(response);
                }

                override fun onSuccess(response: Response<SeacherListBean>) {
                    //获取搜索内容
                    mSearchResultListData.clear()
                    val body = response.body()
                    et_seacher!!.setText(keyWords)
                    type = 0
                    mSearchResultListData.addAll(body.data)
                    if (mSearchResultListData.size > 0) {
                        mSearchResultAdapter!!.setNewData(mSearchResultListData)
                        refreshSearchResult(body.total)
                    } else {
                        showNoData()
                    }
                }
            })
    }

移动了这一行的代码位置，相比大家也都清楚为甚么。原来的垃圾代码导致。

原来的下拉加载实在是不知所云：
期间还牵涉到两个方法：

  private fun refreshSearchResult(total: Int) {

        if (mSearchResultListData.size == 0) {
            mSearchResultAdapter!!.loadMoreEnd()
        }
        //如果总页数=1不用刷新
        if (total > 1) {
            mSearchResultAdapter!!.setOnLoadMoreListener {
                page++
                getLoadData()
            }
        } else {
            mSearchResultAdapter!!.loadMoreEnd(false)
        }


    }

   private fun getLoadData() {
        OkGoUtils.getRequest(
            ConstantUtils.getUrlConstant().video_searcher + "?keywords=" + etSearchTrim + "&page=" + page,
            object : JsonCallBack<SeacherListBean>(SeacherListBean::class.java, this) {

                override fun onStart(request: Request<SeacherListBean, out Request<*, *>>?) {
                    //                super.onStart(request);
                }

                override fun onCacheSuccess(response: Response<SeacherListBean>?) {
                    //                super.onCacheSuccess(response);
                }

                override fun onError(response: Response<SeacherListBean>) {
                    super.onError(response)
                    //触发搜索延迟
                    mSearchResultAdapter!!.loadMoreFail()
                }

                override fun onSuccess(response: Response<SeacherListBean>) {
                    if (response.body().data.size > 0) {
                        mSearchResultAdapter!!.addData(response.body().data)
                    }
                    //如果不够一页就显示更多布局
                    if (response.body().data.size < response.body().per_page) {
                        mSearchResultAdapter!!.loadMoreEnd(false)
                    } else {
                        mSearchResultAdapter!!.loadMoreComplete()
                    }

                }
            })
    }

可以看到他为了下载加载，写了三个方法，并且getLoadData和beginSearch，两个方法高度类似。只是传page的地方不一致。

解决方案：全部换成一个方法，beginSearch，将page变成活的参数，类似于getLoadData，调用轮子自带的下拉刷新api，重新写onSucess中方法。

    private fun beginSearch() {

        val keyWords = etSearchTrim
        OkGoUtils.getRequest(
            ConstantUtils.getUrlConstant().video_searcher + "?keywords=" + keyWords + "&page="+page,
            object : JsonCallBack<SeacherListBean>(SeacherListBean::class.java, this) {
                override fun onCacheSuccess(response: Response<SeacherListBean>?) {
                    //                super.onCacheSuccess(response);
                }

                override fun onSuccess(response: Response<SeacherListBean>) {

                    val body = response.body()
                    mSearchResultAdapter?.addData(body.data)
                    if (body.next_page_url==null) {
                        mSearchResultAdapter?.loadMoreEnd(false)
                    } else {
                        page++
                        mSearchResultAdapter?.loadMoreComplete()
                    }
                }

                override fun onError(response: Response<SeacherListBean>?) {
                    super.onError(response)
                    mSearchResultAdapter?.loadMoreFail()
                }
            })
    }