URLストリーミングのメディアプレーヤー？

Question

私はAndroidで新しく、ウェブURLからビデオファイルを取得してビデオを表示したいのですが、私のSDカードにファイルをダウンロードしようとしていますが、例外があります。

try 
     { 
      Runnable r = new Runnable() { 
       public void run() { 
        try 
        { 
         //mPlayer.setDataSource(item.getStrMusicUrl()); 
         ////////////////////////// 
         Log.i("Music Stream","Strats"); 
         URL url = new URL(item.getStrMusicUrl()); 
         URLConnection cn = url.openConnection(); 
         cn.connect(); 
         Log.i("Music Stream","Connected"); 
         InputStream stream = cn.getInputStream(); 
         if (stream != null) 
         { 
          Log.i("Music Stream","Getting the Stream"); 
          File temp = File.createTempFile("replicaMedia", "dat"); 
          String tempPath = temp.getAbsolutePath(); 
          Log.i("Music File Path",tempPath); 
          FileOutputStream out = new FileOutputStream(temp); 
          Log.i("Music Stream","Stream saved"); 
          byte buf[] = new byte[16384]; 
          Log.i("Music Stream","reading the saved Stream"); 
          int INTIAL_KB_BUFFER = 96*10/8; 
          int totalBytesRead = 0, incrementalBytesRead = 0; 
          do { 
           int numread = stream.read(buf); 
           if (numread <= 0) 
            break; 
           out.write(buf, 0, numread); 
           Log.i("Stream Buffer"," "+numread); 
           totalBytesRead += numread; 
           incrementalBytesRead += numread; 
           totalKbRead = totalBytesRead/1000; 
           //// Call MP to start 
           if(totalKbRead >= INTIAL_KB_BUFFER) 
           { 
            totalBytesRead = 0; 
            if(mPlayer != null && mPlayer.isPlaying()) 
            { 
             mPlayer.pause(); 
            } 

            Log.i("Music Stream","Setting the stream path to MP"); 
            mPlayer.setDataSource(tempPath);  
            mPlayer.prepare(); 
            mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); 
            Log.i("Music Stream","Playing"); 
           } 

          } while (true); 

          stream.close();         

         } 
         else 
         { 
          Log.i("Music Stream ","No Music Stream"); 
         } 
        } catch (Exception e) { 
         e.printStackTrace(); 
        } 
       } 
      }; 

      new Thread(r).start(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
      if (mPlayer != null) 
      { 
       mPlayer.stop(); 
       mPlayer.release(); 
      } 
     } 

Answer 1

public class VedioViewActivity extends Activity { 
private ProgressDialog mProgress; 
private VideoView mVideoView; 
private String url; 
private String videoName; 
private boolean flag; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.vedio_view_xml); 

    flag=false; 
    url=(String)getIntent().getExtras().getString("VideoUrl"); 


    mVideoView=(VideoView)findViewById(R.id.vedio_view); 
    //File root = Environment.getExternalStorageDirectory(); 

    videoName=url.substring(url.lastIndexOf("/")+1); 

    File file=new File("/mnt/sdcard/"); 

    File []fileArr=file.listFiles(); 
    int i; 
    for(i=0;i<fileArr.length;i++){ 
     if(videoName.equals(fileArr[i].toString().substring(fileArr[i].toString().lastIndexOf("/")+1))){ 
      flag=true; 
      break; 
     } 
    } 

    if(flag){ 
     try{ 
      flag=false; 
      URL u = new URL(url); 
      HttpURLConnection c = (HttpURLConnection) u.openConnection(); 
      //Log.i("Main", "content "+c.getContentLength()+" "+fileArr[i].length()); 
      int fileSize=(int)fileArr[i].length(); 
      if(fileSize==c.getContentLength()){ 
       mVideoView.setVideoPath("/mnt/sdcard/"+videoName); 
       mVideoView.setMediaController(new MediaController(this)); 
       mVideoView.start(); 
      }else{ 
       new NetCom().execute(url); 
      } 
      c.disconnect(); 
     }catch(Exception ex){ 
      ex.printStackTrace(); 
     } 
    }else { 
     new NetCom().execute(url); 
    } 
} 

class NetCom extends AsyncTask<String, String, String>{ 

    public NetCom() { 
     mProgress=new ProgressDialog(VedioViewActivity.this); 
     mProgress.setIcon(R.drawable.icon_72); 
     mProgress.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); 
     mProgress.setMessage("Buffering Video..."); 
     mProgress.show(); 
    } 

    @Override 
    protected String doInBackground(String... param) { 

     try{ 

      long availableByte=0; 
      URL u = new URL(param[0]); 
      HttpURLConnection c = (HttpURLConnection) u.openConnection(); 
      c.setRequestMethod("GET"); 
      c.setDoOutput(true); 
      c.connect(); 

      File root = Environment.getExternalStorageDirectory(); 
      FileOutputStream f = new FileOutputStream(new File(root,videoName)); 
      InputStream in = c.getInputStream(); 
      availableByte=c.getContentLength(); 

      int bufferSize=(int)availableByte/100; 

      byte[] buffer = new byte[1024]; 
      int len1 = 0; 
      int total=0; 
      int i=1; 
      while ((len1 = in.read(buffer)) > 0) { 
       total+=len1; 
       if(total>=bufferSize){ 
        total=0; 
        mProgress.setProgress(i++); 
       } 
       f.write(buffer,0, len1); 
      } 
      f.flush(); 
      f.close(); 
      in.close(); 
     }catch(Exception ex){ 
      ex.printStackTrace(); 
     } 
     return null; 
    } 

    @Override 
    protected void onPostExecute(String result) { 
     super.onPostExecute(result); 
     handler.handleMessage(null); 

    } 
    private Handler handler = new Handler() { 
     public void handleMessage(android.os.Message msg) { 
      try { 
       mProgress.dismiss(); 

       String path = "/mnt/sdcard/"+videoName; 
       mVideoView.setVideoPath(path); 
       mVideoView.setMediaController(new MediaController(VedioViewActivity.this)); 
       mVideoView.start(); 

      }catch(Exception ex){ 

      } 
     } 
}; 
     } 
     }