Question

我想用我的视频（.mp4）显示字幕（.srt）我以数据的形式获取数据 JSON并解码它，E.g

视频网址： http://www.example.com/wp-content/uploads/Amshrstry.S02E01.HDTV.x264.mp4

Subtile Url：http://www.example.com/wp-content/uploads/Amshrstry.S02E01.HDTV.x264.srt

我尝试了这个，它就像一个魅力，但我不能使用原始文件夹来读取字幕，我的所有数据fetchin来自我的网站（视频网址和字幕网址），所以我想从网址阅读字幕。

尝试过的代码：

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

txtDisplay = (TextView) findViewById(R.id.txtDisplay);
MediaPlayer player = MediaPlayer.create(this, R.raw.video);

try {
    player.addTimedTextSource(getSubtitleFile(R.raw.sub),
            MediaPlayer.MEDIA_MIMETYPE_TEXT_SUBRIP);
    int textTrackIndex = findTrackIndexFor(
            TrackInfo.MEDIA_TRACK_TYPE_TIMEDTEXT, player.getTrackInfo());
    if (textTrackIndex >= 0) {
        player.selectTrack(textTrackIndex);
    } else {
        Log.w(TAG, "Cannot find text track!");
    }
    player.setOnTimedTextListener(this);
    player.start();
} catch (Exception e) {
    e.printStackTrace();
}
}


private String getSubtitleFile(int resId) {
String fileName = getResources().getResourceEntryName(resId);
File subtitleFile = getFileStreamPath(fileName);
if (subtitleFile.exists()) {
    Log.d(TAG, "Subtitle already exists");
    return subtitleFile.getAbsolutePath();
}
Log.d(TAG, "Subtitle does not exists, copy it from res/raw");

// Copy the file from the res/raw folder to your app folder on the
// device
InputStream inputStream = null;
OutputStream outputStream = null;
try {
    inputStream = getResources().openRawResource(resId);
    outputStream = new FileOutputStream(subtitleFile, false);
    copyFile(inputStream, outputStream);
    return subtitleFile.getAbsolutePath();
} catch (Exception e) {
    e.printStackTrace();
} finally {
    closeStreams(inputStream, outputStream);
}
return "";
}


private void copyFile(InputStream inputStream, OutputStream outputStream)
    throws IOException {
final int BUFFER_SIZE = 1024;
byte[] buffer = new byte[BUFFER_SIZE];
int length = -1;
while ((length = inputStream.read(buffer)) != -1) {
    outputStream.write(buffer, 0, length);
}
}


// A handy method I use to close all the streams
private void closeStreams(Closeable... closeables) {
if (closeables != null) {
    for (Closeable stream : closeables) {
        if (stream != null) {
            try {
                stream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
      }
    }

我想使用Uri代替R.raw.sub。我如何转换getSubtitleFile(R.raw.sub)方法。

Answer 1

用于从网络中读取文件用于例如URLConnection（您可以使用.getInputStream（））。有关详细信息，请参阅http://developer.android.com/reference/java/net/URLConnection.html。

你可以打电话

File dest = new File("destination on SD card");
copyFile(urlConnection.getInputStream(), new FileOutputStream(dest));

以后在播放器中使用相同的文件：

player.addTimedTextSource(dest.getAbsolutePath(),
            MediaPlayer.MEDIA_MIMETYPE_TEXT_SUBRIP);

如何在addTimedTextSource（）方法中使用Uri而不是FileDescriptor？

1 个答案: