Question

我只是使用翻新功能下载视频文件并将其转换为tempFile，但是将其转换后将无法播放视频。

这就是我所做的。

@Streaming
@GET("media/attachment")
fun getAttachmentFromMedia(): Observable<ResponseBody>


fun getAttachment() {
    getApi().getAttachmentFromMedia()
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(
            {
                if (fileType.contains("image")) { 
                    //.. some stuff here
                } else if (fileType.contains("video")) {
                    val tmpFile = File.createTempFile("default", ".mp4")
                    tmpFile.deleteOnExit()

                    try {
                        val output = FileOutputStream(tmpFile)
                        var read = 0
                        output.use { _ ->
                            val buffer = ByteArray(4 * 1024)
                            while (it.byteStream().read(buffer).let { read = it; read != -1 }) {
                                output.write(buffer, 0, read)
                            }
                            output.flush()
                        }
                    } finally {
                        it.byteStream().close()

                        val mediaController = MediaController(holder.itemView.context)
                        mediaController.setAnchorView(holder.videoView)
                        holder.videoView.setMediaController(mediaController)

                        holder.videoView.setVideoURI(Uri.fromFile(tmpFile))
                        holder.videoView.start()

                        holder.videoView.visibility = View.VISIBLE
                    }
                }
            },
            {
                Log.e(TAG, "getAttachment failed", it)
            }
        )
}

当附件为图片时，此代码有效，但是在视频中，我真的不知道为什么视频无法播放。

我也不知道为什么在调用此getAttachmentFromMedia() API时，应用程序暂时冻结了。

我在这里做对吗，还是应该更改一些内容？

感谢您的帮助。谢谢。

Answer 1

   VideoView videoView;


    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        videoView = (VideoView)findViewById(R.id.ViewVideo);


        String videopath = "android.resource://com.example.cloudanalogy.play_video/"+R.raw.a; //com.example.cloudanalogy.play_video this is my package name,and inside the raw file a.mp4 video
        Uri vidUri = Uri.parse(videopath);
        videoView.setVideoURI(vidUri);
        videoView.start();
        MediaController mediaController = new MediaController(this);
        mediaController.setAnchorView(videoView);
        videoView.setMediaController(mediaController);


    }
}

Answer 2

在设备中下载文件后，像这样从file_path播放视频。

将以下代码放入您的finally块中。

MediaController mediaController = new MediaController(getActivity());
mediaController.setMediaPlayer(videoView);
videoView.setVideoURI(Uri.parse(mFilePath));
videoView.setMediaController(mediaController );
videoView.start();

直接从video_url播放视频。

          try {
                pDialog.show();
                MediaController mediacontroller = new MediaController(this);
                mediacontroller.setAnchorView(videoview);
                Uri video = Uri.parse(VideoURL);
                videoview.setMediaController(mediacontroller);
                videoview.setVideoURI(video);
                videoview.requestFocus();
                videoview.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                public void onPrepared(MediaPlayer mp) {
                       pDialog.dismiss();
                       videoview.start();
                    }
                });
            } catch (Exception e) {
                pDialog.dismiss();
                e.printStackTrace();
            }

VideoView无法播放InputStream中的视频

2 个答案: