When the recyclerview plays more videos, the problem of refreshing the current video is solved.

The background of the story is like this ： What the project does is a short video playback function similar to Tiktok , Click to enter the video details , Play full screen , Then slide up and down to switch video , It's using RecyclerView Combined with Alibaba cloud player Video streaming , Because the background is a paging interface , Therefore, more data needs to be loaded when there is almost no data on the slide . It used to be ： 

this.list.clear(); // Clear data source

this.list.addAll(list); // Update data source

adapter.notifyDataSetChanged();// Refresh List

Then there is a small problem , Request per page 10 strip , If the home page currently has a total of 10 A video , From the home page, directly click Page 10 individual , That is, currently playing the 10 A video , Then directly request the next page of video data , Using the above code will cause the currently playing video to restart playing , The experience is not very good , And as we all know notifyDataSetChanged（） refresh all , Efficiency is the lowest . Just want to use RecyclerView To replace the local refresh , namely

notifyItemRangeChanged(this.list.size()-list.size(),this.list.size());  // Only refresh and load the extra data list 

Then run and find no effect , Many data slides do not appear ！ Muddled ing...  (tip: Before, I usually used RecyclerView Make a list , This is the first time to do this kind of complex video streaming ~)

// Finally, it was changed to this kind of writing , Successfully refresh data , At the same time, the progress of the currently playing video will not be interrupted ：

this.list.addAll(list);// Update data source 
notifyItemRangeInserted(this.list.size()-list.size(),this.list.size());// Update the number of lists 
notifyItemRangeChanged(this.list.size()-list.size(),this.list.size());// Update list data 

seeing the name of a thing one thinks of its function , Insert the number of lists first , Then perform a local refresh operation , Make a note of , Why haven't you seen the source code yet , Let's settle it first ,over.