播放使用textureview在recyclerview视频 [英] Playing video using textureview in recyclerview
本文介绍了播放使用textureview在recyclerview视频的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想实现与像藤或Instagram的应用程序，视频列表。当他们玩视频的播放列表项显示或完全显示和视频暂停时，列表项被藏起来的时候。我使用textureview与媒体播放器播放从URL的视频，并将其添加在recyclerview列表项。以下是我的code。
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类：
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类：
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();
}
}
当我运行此code存在于它的多个问题。
When i run this code there are multiple issues in it.
1）前两项/视频缓冲和播放罚款。但是，当我把它的滚动不加载第三方视频和第一视频也将被从列表中删除。
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）在滚动视频/列表中的项目重新开始缓冲对于已缓存的项目。
2) On scroll videos/list items starts buffering again for the item that was already buffered.
3）在快速滚动列表变得过于延迟非常明显，会被卡住而崩溃。
3) On fast scroll list gets too laggy and get stuck and crashes.
附上的logcat的形象，我得到的，而列表中滚动和视频播放。
Attached is the image of logcat that i get while list scroll and video playing.
任何人都可以指导我通过这个？什么是正确的方式来创建一个像藤的应用程序列表？
Can anyone guide me through this? What is the right way to create a list like vine app?
推荐答案
我是能够做到这一点，首先从下载URL中的视频，然后用自定义播放器播放。这里是我做的情况下，如果别人需要的：
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）获取所有的URL需要播放的
1) Get all url's need to be played
2）开始从本地存储的URL下载视频（队列），并保持在preferences标志（即已经下载的视频或没有）
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）指定网址适配器在初始化处理视频回放的视频播放器控制器对象
3) Assign urls to Adapter in which initialize object of video player controller that handles video playbacks
4）套装addOnScrollListener检查哪个位置/视频是当前可见的，并检查是否视频已下载与否，如果是的话那么玩。
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.
以下是完整的code：
Following is complete code:
MainActivity
public class MainActivity extends ActionBarActivity implements IVideoDownloadListener {
private static String TAG = "MainActivity";
private Context context;
private RecyclerView mRecyclerView;
private ProgressBar progressBar;
private VideosAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
private ArrayList<Video> urls;
VideosDownloader videosDownloader;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
context = MainActivity.this;
mRecyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
urls = new ArrayList<Video>();
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = new VideosAdapter(MainActivity.this, urls);
mRecyclerView.setAdapter(mAdapter);
videosDownloader = new VideosDownloader(context);
videosDownloader.setOnVideoDownloadListener(this);
if(Utils.hasConnection(context))
{
getVideoUrls();
mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
}
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
super.onScrollStateChanged(recyclerView, newState);
if (newState == RecyclerView.SCROLL_STATE_IDLE) {
LinearLayoutManager layoutManager = ((LinearLayoutManager) recyclerView.getLayoutManager());
int firstVisiblePosition = layoutManager.findFirstVisibleItemPosition();
int findFirstCompletelyVisibleItemPosition = layoutManager.findFirstCompletelyVisibleItemPosition();
Video video;
if (urls != null && urls.size() > 0)
{
if (findFirstCompletelyVisibleItemPosition >= 0) {
video = urls.get(findFirstCompletelyVisibleItemPosition);
mAdapter.videoPlayerController.setcurrentPositionOfItemToPlay(findFirstCompletelyVisibleItemPosition);
mAdapter.videoPlayerController.handlePlayBack(video);
}
else
{
video = urls.get(firstVisiblePosition);
mAdapter.videoPlayerController.setcurrentPositionOfItemToPlay(firstVisiblePosition);
mAdapter.videoPlayerController.handlePlayBack(video);
}
}
}
}
});
}
else
Toast.makeText(context, "No internet available", Toast.LENGTH_LONG).show();
}
@Override
public void onVideoDownloaded(Video video) {
mAdapter.videoPlayerController.handlePlayBack(video);
}
private void getVideoUrls()
{
Video video1 = new Video("0", "1", "http://techslides.com/demos/sample-videos/small.mp4");
urls.add(video1);
Video video2 = new Video("1", "2", "http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4");
urls.add(video2);
Video video3 = new Video("2", "3", "http://sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4");
urls.add(video3);
Video video4 = new Video("3", "4", "http://dev.exiv2.org/attachments/341/video-2012-07-05-02-29-27.mp4");
urls.add(video4);
Video video5 = new Video("4", "5", "http://techslides.com/demos/sample-videos/small.mp4");
urls.add(video5);
Video video6 = new Video("5", "6", "http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4");
urls.add(video6);
Video video7 = new Video("6", "7", "http://sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4");
urls.add(video7);
mAdapter.notifyDataSetChanged();
progressBar.setVisibility(View.GONE);
videosDownloader.startVideosDownloading(urls);
}
}
VideosAdapter
public class VideosAdapter extends RecyclerView.Adapter<VideosAdapter.ViewHolder> {
private static String TAG = "VideosAdapter";
Context context;
private ArrayList<Video> urls;
public VideoPlayerController videoPlayerController;
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView textView;
public ProgressBar progressBar;
public RelativeLayout layout;
public ViewHolder(View v) {
super(v);
layout = (RelativeLayout) v.findViewById(R.id.layout);
textView = (TextView) v.findViewById(R.id.textView);
progressBar = (ProgressBar) v.findViewById(R.id.progressBar);
}
}
public VideosAdapter(Context context, final ArrayList<Video> urls) {
this.context = context;
this.urls = urls;
videoPlayerController = new VideoPlayerController(context);
}
// Create new views (invoked by the layout manager)
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.view_main, parent, false);
Configuration configuration = context.getResources().getConfiguration();
int screenWidthDp = configuration.screenWidthDp; //The current width of the available screen space, in dp units, corresponding to screen width resource qualifier.
int smallestScreenWidthDp = configuration.smallestScreenWidthDp; //The smallest screen size an application will see in normal operation, corresponding to smallest screen width resource qualifier.
ViewHolder viewHolder = new ViewHolder(v);
int screenWidthPixels = Utils.convertDpToPixel(screenWidthDp, context);
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, screenWidthPixels);
viewHolder.layout.setLayoutParams(rel_btn);
return viewHolder;
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
Video video = urls.get(position);
holder.textView.setText("Video " + video.getId());
final VideoPlayer videoPlayer = new VideoPlayer(context);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
videoPlayer.setLayoutParams(params);
holder.layout.addView(videoPlayer);
videoPlayerController.loadVideo(video, videoPlayer, holder.progressBar);
videoPlayer.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
videoPlayer.changePlayState();
}
});
}
@Override
public void onViewRecycled(ViewHolder holder) {
super.onViewRecycled(holder);
Log.d(TAG, "onViewRecycledCalled");
holder.layout.removeAllViews();
}
@Override
public int getItemCount() {
return urls.size();
}
}
VideosDownloader
public class VideosDownloader {
private static String TAG = "VideosDownloader";
Context context;
FileCache fileCache;
IVideoDownloadListener iVideoDownloadListener;
public VideosDownloader(Context context) {
this.context = context;
fileCache = new FileCache(context);
}
/////////////////////////////////////////////////////////////////
// Start downloading all videos from given urls
public void startVideosDownloading(final ArrayList<Video> videosList)
{
Thread thread = new Thread(new Runnable() {
@Override
public void run()
{
for(int i=0; i<videosList.size(); i++)
{
final Video video = videosList.get(i);
String id = video.getId();
String url = video.getUrl();
String isVideoDownloaded = Utils.readPreferences(context, video.getUrl(), "false");
boolean isVideoAvailable = Boolean.valueOf(isVideoDownloaded);
if(!isVideoAvailable)
{
//Download video from url
String downloadedPath = downloadVideo(url);
//Log.i(TAG, "Vides downloaded at: " + downloadedPath);
Activity activity = (Activity) context;
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
Utils.savePreferences(context, video.getUrl(), "true");
iVideoDownloadListener.onVideoDownloaded(video);
}
});
}
}
}
});
thread.start();
}
/////////////////////////////////////////////////////////////////
private String downloadVideo(String urlStr)
{
URL url = null;
File file = null;
try
{
file = fileCache.getFile(urlStr);
url = new URL(urlStr);
long startTime = System.currentTimeMillis();
URLConnection ucon = null;
ucon = url.openConnection();
InputStream is = ucon.getInputStream();
BufferedInputStream inStream = new BufferedInputStream(is, 1024 * 5);
FileOutputStream outStream = new FileOutputStream(file);
byte[] buff = new byte[5 * 1024];
//Read bytes (and store them) until there is nothing more to read(-1)
int len;
while ((len = inStream.read(buff)) != -1) {
outStream.write(buff, 0, len);
}
//clean up
outStream.flush();
outStream.close();
inStream.close();
}
catch (MalformedURLException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
return file.getAbsolutePath();
}
public void setOnVideoDownloadListener(IVideoDownloadListener iVideoDownloadListener) {
this.iVideoDownloadListener = iVideoDownloadListener;
}
}
VideoPlayerController
public class VideoPlayerController {
private static String TAG = "VideoPlayerController";
Context context;
FileCache fileCache;
int currentPositionOfItemToPlay = 0;
Video currentPlayingVideo;
private Map<String, VideoPlayer> videos = Collections.synchronizedMap(new WeakHashMap<String, VideoPlayer>());
private Map<String, ProgressBar> videosSpinner = Collections.synchronizedMap(new WeakHashMap<String, ProgressBar>());
public VideoPlayerController(Context context) {
this.context = context;
fileCache = new FileCache(context);
}
public void loadVideo(Video video, VideoPlayer videoPlayer, ProgressBar progressBar) {
//Add video to map
videos.put(video.getIndexPosition(), videoPlayer);
videosSpinner.put(video.getIndexPosition(), progressBar);
handlePlayBack(video);
}
//This method would check two things
//First if video is downloaded or its local path exist
//Second if the videoplayer of this video is currently showing in the list or visible
public void handlePlayBack(Video video)
{
//Check if video is available
if(isVideoDownloaded(video))
{
// then check if it is currently at a visible or playable position in the listview
if(isVideoVisible(video))
{
//IF yes then playvideo
playVideo(video);
}
}
}
private void playVideo(final Video video)
{
//Before playing it check if this video is already playing
if(currentPlayingVideo != video)
{
//Start playing new url
if(videos.containsKey(video.getIndexPosition()))
{
final VideoPlayer videoPlayer2 = videos.get(video.getIndexPosition());
String localPath = fileCache.getFile(video.getUrl()).getAbsolutePath();
if(!videoPlayer2.isLoaded)
{
videoPlayer2.loadVideo(localPath, video);
videoPlayer2.setOnVideoPreparedListener(new IVideoPreparedListener() {
@Override
public void onVideoPrepared(Video mVideo) {
//Pause current playing video if any
if(video.getIndexPosition() == mVideo.getIndexPosition())
{
if(currentPlayingVideo!=null)
{
VideoPlayer videoPlayer1 = videos.get(currentPlayingVideo.getIndexPosition());
videoPlayer1.pausePlay();
}
videoPlayer2.mp.start();
currentPlayingVideo = mVideo;
}
}
});
}
else
{
//Pause current playing video if any
if(currentPlayingVideo!=null)
{
VideoPlayer videoPlayer1 = videos.get(currentPlayingVideo.getIndexPosition());
videoPlayer1.pausePlay();
}
boolean isStarted = videoPlayer2.startPlay();
{
//Log.i(TAG, "Started playing Video Index: " + video.getIndexPosition());
//Log.i(TAG, "Started playing Video: " + video.getUrl());
}
currentPlayingVideo = video;
}
}
}
else
{
//Log.i(TAG, "Already playing Video: " + video.getUrl());
}
}
private boolean isVideoVisible(Video video) {
//To check if the video is visible in the listview or it is currently at a playable position
//we need the position of this video in listview and current scroll position of the listview
int positionOfVideo = Integer.valueOf(video.getIndexPosition());
if(currentPositionOfItemToPlay == positionOfVideo)
return true;
return false;
}
private boolean isVideoDownloaded(Video video) {
String isVideoDownloaded = Utils.readPreferences(context, video.getUrl(), "false");
boolean isVideoAvailable = Boolean.valueOf(isVideoDownloaded);
if(isVideoAvailable)
{
//If video is downloaded then hide its progress
hideProgressSpinner(video);
return true;
}
showProgressSpinner(video);
return false;
}
private void showProgressSpinner(Video video) {
ProgressBar progressBar = videosSpinner.get(video.getIndexPosition());
if(progressBar!=null)
progressBar.setVisibility(View.VISIBLE);
}
private void hideProgressSpinner(Video video) {
ProgressBar progressBar = videosSpinner.get(video.getIndexPosition());
if(progressBar!=null && progressBar.isShown())
{
progressBar.setVisibility(View.GONE);
Log.i(TAG, "ProgressSpinner Hided Index: " + video.getIndexPosition());
}
}
public void setcurrentPositionOfItemToPlay(int mCurrentPositionOfItemToPlay) {
currentPositionOfItemToPlay = mCurrentPositionOfItemToPlay;
}
}
的VideoPlayer
public class VideoPlayer extends TextureView implements TextureView.SurfaceTextureListener {
private static String TAG = "VideoPlayer";
/**This flag determines that if current VideoPlayer object is first item of the list if it is first item of list*/
boolean isFirstListItem;
boolean isLoaded;
boolean isMpPrepared;
IVideoPreparedListener iVideoPreparedListener;
Video video;
String url;
MediaPlayer mp;
Surface surface;
SurfaceTexture s;
public VideoPlayer(Context context) {
super(context);
}
public VideoPlayer(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public void loadVideo(String localPath, Video video) {
this.url = localPath;
this.video = video;
isLoaded = true;
if (this.isAvailable()) {
prepareVideo(getSurfaceTexture());
}
setSurfaceTextureListener(this);
}
@Override
public void onSurfaceTextureAvailable(final SurfaceTexture surface, int width, int height) {
isMpPrepared = false;
prepareVideo(surface);
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
if(mp!=null)
{
mp.stop();
mp.reset();
mp.release();
mp = null;
}
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
public void prepareVideo(SurfaceTexture t)
{
this.surface = new Surface(t);
mp = new MediaPlayer();
mp.setSurface(this.surface);
try {
mp.setDataSource(url);
mp.prepareAsync();
mp.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
isMpPrepared = true;
mp.setLooping(true);
iVideoPreparedListener.onVideoPrepared(video);
}
});
} 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();
}
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
}
@Override
protected void onVisibilityChanged(View changedView, int visibility) {
super.onVisibilityChanged(changedView, visibility);
}
public boolean startPlay()
{
if(mp!=null)
if(!mp.isPlaying())
{
mp.start();
return true;
}
return false;
}
public void pausePlay()
{
if(mp!=null)
mp.pause();
}
public void stopPlay()
{
if(mp!=null)
mp.stop();
}
public void changePlayState()
{
if(mp!=null)
{
if(mp.isPlaying())
mp.pause();
else
mp.start();
}
}
public void setOnVideoPreparedListener(IVideoPreparedListener iVideoPreparedListener) {
this.iVideoPreparedListener = iVideoPreparedListener;
}
}
IVideoDownloadListener
public interface IVideoDownloadListener {
public void onVideoDownloaded(Video video);
}
IVideo preparedListener
public interface IVideoPreparedListener {
public void onVideoPrepared(Video video);
}
这篇关于播放使用textureview在recyclerview视频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IT屋！
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