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I am trying to implement a list with videos like vine or Instagram app. Where they play video plays when list item is shown or fully visible and video pauses when list item gets hided. I am using textureview with media player to play a video from url and added it as list item in recyclerview. Following is my code.
VideosAdapter Class:
public class VideosAdapter extends RecyclerView.Adapter<VideosAdapter.ViewHolder> {
Context context;
private ArrayList<String> urls;
public static class ViewHolder extends RecyclerView.ViewHolder {
public LinearLayout layout;
public TextView textView;
public ViewHolder(View v) {
super(v);
layout = (LinearLayout) v.findViewById(R.id.linearLayout);
textView = (TextView) v.findViewById(R.id.textView);
}
}
public VideosAdapter(Context context, ArrayList<String> urls) {
this.context = context;
this.urls = urls;
}
// Create new views (invoked by the layout manager)
@Override
public VideosAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.view_main, parent, false);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
String url = urls.get(position);
holder.textView.setText(url);
playVideo(holder, url);
}
@Override
public int getItemCount() {
return urls.size();
}
private void playVideo(ViewHolder holder, String url)
{
final CustomVideoPlayer vid = new CustomVideoPlayer(String.valueOf(url), context);
holder.layout.addView(vid);
holder.layout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
vid.changePlayState();
}
});
}
}
CustomVideoPlayer Class:
public class CustomVideoPlayer extends TextureView implements TextureView.SurfaceTextureListener
{
Context context;
String url;
MediaPlayer mp;
Surface surface;
SurfaceTexture s;
public CustomVideoPlayer(Context context, AttributeSet attrs)
{
super(context, attrs);
this.context = context;
}
public CustomVideoPlayer(String ur, Context context)
{
super(context);
this.setSurfaceTextureListener(this);
this.url = ur;
this.context = context;
}
@Override
public void onSurfaceTextureAvailable(final SurfaceTexture surface, int arg1, int arg2) {
this.s = surface;
Log.d("url", this.url);
startVideo(surface);
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture arg0) {
return true;
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture arg0, int arg1,int arg2) {
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture arg0) {
}
public void setVideo(String url)
{
this.url = url;
}
public void startVideo(SurfaceTexture t)
{
this.surface = new Surface(t);
this.mp = new MediaPlayer();
this.mp.setSurface(this.surface);
try {
Uri uri = Uri.parse(this.url);
this.mp.setDataSource(url);
this.mp.prepareAsync();
this.mp.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
mp.setLooping(true);
mp.start();
}
});
} catch (IllegalArgumentException e1) {
e1.printStackTrace();
} catch (SecurityException e1) {
e1.printStackTrace();
} catch (IllegalStateException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
try {
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
}
try {
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
public void changePlayState()
{
if(this.mp.isPlaying())
this.mp.pause();
else
this.mp.start();
}
}
When i run this code there are multiple issues in it.
1) First two items/videos buffers and play fine. But when i scroll it does not load third video and first video also gets removed from the list.
2) On scroll videos/list items starts buffering again for the item that was already buffered.
3) On fast scroll list gets too laggy and get stuck and crashes.
Attached is the image of logcat that i get while list scroll and video playing.
Can anyone guide me through this? What is the right way to create a list like vine app?
I was able to achieve that by first downloading the videos from url and then playing it with custom player. Here is how i did in case if anyone else needed that:
1) Get all url's need to be played
2) Start downloading videos (in queue) from urls in local storage and keep a flag in preferences (that a video is already downloaded or not)
3) Assign urls to Adapter in which initialize object of video player controller that handles video playbacks
4) Set addOnScrollListener to check which position/video is currently visible and check if video is already downloaded or not if yes then play it.
Following is complete code:
MainActivity
VideosAdapter
VideosDownloader
VideoPlayerController
VideoPlayer
IVideoDownloadListener
IVideoPreparedListener
You should maintain a cache of videos locally by downloading them at backend and play one video at a time from local memory to keep the list scroll smooth.
Why don't you add the custom video view in the layout file 'view_main' itself. Check the visibility of the video view and play only if the view is visible.
Code for checking visiblity. Call this in scroll state changed listener when the scroll state is idle.
Also you will have to use an AsyncTask for downloading videos ,but only download one video at a time or you might get out of memory error.