从URL下载SD卡上的视频 [英] Download Video on SDCard from url

问题描述

我有一个应用程序从URL下载视频的SD卡。我指的这个<一href="http://stackoverflow.com/questions/3692252/android-how-do-i-download-a-video-file-to-sd-card/3692492#3692492">link.但这个链接中包含的网址为.MP4​​格式。我要下载新闻提要视频。我的格式不.MP4格式。这将是主要的.swf。  我的网址是，

I am having an application to download video on sdcard from url. I refer this link. But this link contains the url as .mp4 format. I have to download news feed videos. My format is not .mp4 format. It will be mostly .swf. The url of mine is,

<$c$c>http://cdnapi.kaltura.com/index.php/kwidget/wid/_483511/uiconf_id/5590821/entry_id/0_cf39ej0c

我是通过解析RSS订阅（新闻供稿）获得此URL。

I was getting this url by parsing rss feed( news feed).

我的code是：

public class MainActivity extends Activity {
    public final String TAG = "MainActivity";
    private final String PATH = "/sdcard/downloadVideo/";
    private final int TIMEOUT_CONNECTION = 5000;// 5sec
    private final int TIMEOUT_SOCKET = 300000;// 30sec
    //public final String imageURL = "http://www.cbsnews.com/video/watch/?id=50149183n&tag=api";
    public final String imageURL = "http://cdnapi.kaltura.com/index.php/kwidget/wid/_483511/uiconf_id/5590821/entry_id/0_cf39ej0c";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        DownloadFromUrl(imageURL, PATH);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    public void DownloadFromUrl(String VideoURL, String fileName) { // this is
                                                                    // the
                                                                    // downloader
                                                                    // method
        try {
            URL url = new URL(VideoURL);
            long startTime = System.currentTimeMillis();
            Log.i(TAG, "image download beginning: " + VideoURL);

            // Open a connection to that URL.
            URLConnection ucon = url.openConnection();

            // this timeout affects how long it takes for the app to realize
            // there's a connection problem
            ucon.setReadTimeout(TIMEOUT_CONNECTION);
            ucon.setConnectTimeout(TIMEOUT_SOCKET);

            // Define InputStreams to read from the URLConnection.
            // uses 3KB download buffer
            InputStream is = ucon.getInputStream();
            BufferedInputStream inStream = new BufferedInputStream(is, 1024 * 5);
            FileOutputStream outStream = new FileOutputStream(fileName);
            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();

            Log.i(TAG, "download completed in "
                    + ((System.currentTimeMillis() - startTime) / 1000)
                    + " sec");

        } catch (IOException e) {
            Log.d("VideoManager", "Error: " + e);
        }

    }
}

但我不能得到这个视频？

But I couldn't get this video?

其实我想实现视频流。但我不知道该怎么做。

Actually I am trying to achieve video streaming. But I don't know that how to do it.

我在做什么错误在我的code？

Am i doing any wrong in my code?

请给你的建议，以实现上述。

Please give your suggestion to achieve the above.

感谢你在前进！

推荐答案

试试这个：

取代手工定义到SD卡的路径，用

Instead of defining the path to the SD card manually, use

String Path = Environment.getExternalStorageDirectory().getPath();

并添加一个文件名后面，像

and add a file name behind that, like

String filename = Path + "/filename.mp4"

和传递这些文件名串到你的的FileOutputStream 秒。

and pass these filename strings to your FileOutputStreams.

编辑：

而不是下载该文件，查看它直接使用VideoView，用code是这样的：

Instead of downloading the file, view it directly using VideoView, with code like this:

VideoView mVideoView;
MediaController mcon;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.videoplay);
    mVideoView = (VideoView) findViewById(R.id.videoview);
    String videourl="http://cdnapi.kaltura.com/index.php/kwidget/wid/_483511/uiconf_id/5590821/entry_id/0_cf39ej0c";
    mcon.setMediaPlayer(mVideoView); // add this line
    mcon = new MediaController(this);
    mVideoView.setMediaController(mcon);
    mVideoView.requestFocus();
    mVideoView.setVideoURI(Uri.parse(videourl));
    mcon.show();
    mVideoView.start();
}

和不要忘记提及在互联网权限的Andr​​oidManifest.xml ：

And dont forget to mention the internet permission in androidmanifest.xml:

<uses-permission android:name="android.permission.INTERNET" />

这篇关于从URL下载SD卡上的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！