下载管理器无法

Question

我使用的下载管理器来下载以下网址下载：

http://dj-videos.us/Music/XclusiveSinGleTrack/320%20Kbps/November%202013/Yo%20Yo%20Honey% 20Singh％20-％20Blue％20Eyes- [DJKANG.Com] .mp3

但是下载失败。我甚至击中了浏览器的网址，并且正常运行。它是URL解析的问题吗？

代码：DDownloadService.java

public class DDownloadService extends Service { 
private Looper mServiceLooper; 
private ServiceHandler mServiceHandler; 
Context conte; 
// NotificationManager notificationManager; 
// NotificationCompat.Builder mBuilder; 
boolean playing = false; 
Runnable runnable; 
SharedPreferences pre; 
static int countOfCurrent = 0; 
String downloadName, downloadUrl; 
NotificationManager notificationManager; 
NotificationCompat.Builder mBuilder; 

// .. 
static int downloadNumber = 0; 
DownloadManager mgr[] = new DownloadManager[100]; 
long downloadIds[] = new long[100]; 
BroadcastReceiver cancelDownload; 

private final class ServiceHandler extends Handler { 
    public ServiceHandler(Looper looper) { 
     super(looper); 
    } 

    @Override 
    public void handleMessage(Message msg) { 
     try { 
      Thread.sleep(5000); 
     } catch (InterruptedException e1) { 
      e1.printStackTrace(); 
     } 
     downloadNumber++; 
     downloadName = pre.getString("downloadname", ""); 
     downloadName = viewSD(downloadName); 
     downloadUrl = pre.getString("downloadurl", ""); 
     downloadName = downloadName.toLowerCase(); 
     pre.edit() 
       .putString(
         "songsInDownload", 
         pre.getString("songsInDownload", "") + "|" 
           + downloadName).commit(); 
     pre.edit().putInt(downloadName + "no", +downloadNumber).commit(); 
     mgr[downloadNumber] = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE); 
     try { 
      countOfCurrent++; 
      downloadIds[downloadNumber] = mgr[downloadNumber] 
        .enqueue(new DownloadManager.Request(Uri 
          .parse(downloadUrl)) 
          .setAllowedNetworkTypes(
            DownloadManager.Request.NETWORK_WIFI 
              | DownloadManager.Request.NETWORK_MOBILE) 
          .setAllowedOverRoaming(false) 
          .setTitle("Downloading") 
          .setDescription(downloadName) 
          .setNotificationVisibility(
            DownloadManager.Request.VISIBILITY_HIDDEN) 
          .setDestinationInExternalPublicDir(
            Environment.DIRECTORY_MUSIC, 
            downloadName) 
          .setVisibleInDownloadsUi(false)); 
      pre.edit() 
        .putLong(downloadName + "id", 
          downloadIds[downloadNumber]).commit(); 
      Timer myTimer = new Timer(); 
      myTimer.schedule(new RegrowCornAnimate(downloadNumber, 
        downloadName), 0, 10); 
     } catch (IllegalStateException e) { 
      Toast.makeText(getBaseContext(), "No storage found!", 
        Toast.LENGTH_SHORT).show(); 
      e.printStackTrace(); 
     } catch (Exception e) { 
      Toast.makeText(getBaseContext(), " Something wrong happened!", 
        Toast.LENGTH_SHORT).show(); 
      e.printStackTrace(); 
     } 
    } 
} 

@Override 
public void onCreate() { 
    conte = this; 
    pre = getSharedPreferences("download", 0); 
    downloadName = pre.getString("downloadname", ""); 
    downloadUrl = pre.getString("downloadurl", ""); 
    cancelDownload = new BroadcastReceiver() { 

     @Override 
     public void onReceive(Context arg0, Intent arg1) { 
      try { 
       mgr[pre.getInt(arg1.getExtras().getString("name") + "no", 0)] 
         .remove(pre.getLong(
           arg1.getExtras().getString("name") + "id", 
           0)); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    }; 
    registerReceiver(cancelDownload, new IntentFilter("cancelIt")); 
    notificationManager = (NotificationManager) conte 
      .getSystemService(Context.NOTIFICATION_SERVICE); 
    mBuilder = new NotificationCompat.Builder(conte) 
      .setSmallIcon(R.drawable.icon) 
      .setContentTitle("Downloading in progress").setContentText(""); 
    startForeground(55, mBuilder.build()); 
    notificationManager.cancel(55); 
    HandlerThread thread = new HandlerThread("ServiceStartArguments", 0); 

    // //.................. 
    // notificationManager = (NotificationManager) conte 
    // .getSystemService(Context.NOTIFICATION_SERVICE); 
    // mBuilder = new NotificationCompat.Builder(conte); 
    // RemoteViews remoteViews = new RemoteViews(getPackageName(), 
    // R.layout.notification_layout); 
    // try { 
    // mBuilder.setSmallIcon(R.drawable.icon); 
    // mBuilder.setAutoCancel(false).setOngoing(true) 
    // .setContent(remoteViews); 
    // Uri uri = RingtoneManager 
    // .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); 
    // mBuilder.setSound(uri); 
    // notificationManager.notify(Mp3Constants.NOTIFICATION_NUMBER, 
    // mBuilder.build()); 
    // } catch (Exception e) { 
    // e.printStackTrace(); 
    // } 
    // //................... 

    thread.start(); 
    mServiceLooper = thread.getLooper(); 
    mServiceHandler = new ServiceHandler(mServiceLooper); 
} 

@Override 
public int onStartCommand(Intent intent, int flags, int startId) { 
    // online = intent.getExtras().getString("online"); 
    // link = intent.getExtras().getString("link"); 
    // name = intent.getExtras().getString("name"); 
    Message msg = mServiceHandler.obtainMessage(); 
    msg.arg1 = startId; 
    mServiceHandler.sendMessage(msg); 
    return START_NOT_STICKY; 
} 

@Override 
public IBinder onBind(Intent intent) { 
    return null; 
} 

@Override 
public void onDestroy() { 
    super.onDestroy(); 
    unregisterReceiver(cancelDownload); 
} 

class RegrowCornAnimate extends TimerTask { 

    private final int serial; 
    private final String name_of_da; 
    boolean startFlag = true, errorFlag = true; 

    RegrowCornAnimate(int serial, String name) { 
     this.serial = serial; 
     this.name_of_da = name; 
    } 

    public void run() { 
     // Do stuff 
     int dl_progress = 0; 

     try { 
      DownloadManager.Query q = new DownloadManager.Query(); 
      q.setFilterById(downloadIds[serial]); 
      Cursor c = mgr[serial].query(q); 
      c.moveToFirst(); 
      long bytes_downloaded = c 
        .getInt(c 
          .getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR)); 
      long bytes_total = c 
        .getInt(c 
          .getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES)); 
      dl_progress = (int) ((bytes_downloaded * 100)/bytes_total); 
      pre.edit().putInt(name_of_da, dl_progress).commit(); 
      switch (c.getInt(c 
        .getColumnIndex(DownloadManager.COLUMN_STATUS))) { 
      case DownloadManager.STATUS_FAILED: 
       // msg = "Download failed!"; 
//     Toast.makeText(getBaseContext(), "Url Broken!", 
//       Toast.LENGTH_SHORT).show(); 
       sendNotification(1, serial, name_of_da, dl_progress); 
       this.cancel(); 
       countOfCurrent--; 
       if (countOfCurrent == 0) 
        stopSelf(); 
       break; 

      case DownloadManager.STATUS_PAUSED: 
       // msg = "Download paused!"; 
       if (errorFlag) { 
        errorFlag = false; 
        sendNotification(7, serial, name_of_da, dl_progress); 
       } 
       break; 

      case DownloadManager.STATUS_PENDING: 
       // msg = "Download pending!"; 
       sendNotification(0, serial, name_of_da, dl_progress); 
       break; 

      case DownloadManager.STATUS_RUNNING: 
       // msg = "Download in progress!"; 
       errorFlag = true; 
       if (startFlag) { 
        if (verifyFromSD(name_of_da)) { 
         startFlag = false; 
         sendBroadcast(new Intent("start")); 
        } 
       } 
       sendNotification(0, serial, name_of_da, dl_progress); 
       break; 

      case DownloadManager.STATUS_SUCCESSFUL: 
       // msg = "Download complete!"; 
       pre.edit() 
         .putString(
           "songsInDownload", 
           pre.getString("songsInDownload", "") 
             .replace("|" + name_of_da, "")) 
         .commit(); 
       pre.edit().putInt(name_of_da, 100); 
       sendNotification(0, serial, name_of_da, dl_progress); 
       this.cancel(); 
       countOfCurrent--; 
       if (countOfCurrent == 0) 
        stopSelf(); 
       break; 

      default: 
       // msg = "Download is nowhere in sight"; 
       sendNotification(10, serial, name_of_da, dl_progress); 
       this.cancel(); 
       countOfCurrent--; 
       if (countOfCurrent == 0) 
        stopSelf(); 
       break; 
      } 
      c.close(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
      sendNotification(7, serial, name_of_da, dl_progress); 
      cancel(); 
      countOfCurrent--; 
      if (countOfCurrent == 0) 
       stopSelf(); 
     } 
    } 
} 

public void sendNotification(int tmout, int nin, String name, int progress) { 
    if (tmout == 0) { 

     // notificationManager.notify(nin, mBuilder.build()); 
     if (progress >= 100) { 
      // notificationManager.cancel(nin); 
      mBuilder.setSmallIcon(R.drawable.icon) 
        .setContentTitle("Completed").setContentText(name) 
        .setAutoCancel(true).setOngoing(false) 
        .setProgress(100, 100, false); 
      Uri ttt = Uri.parse(Environment.getExternalStorageDirectory() 
        .toString() + "/Music/" + name); 
      pre.edit().putInt("retry", 1).commit(); 
      Intent inten = new Intent(Intent.ACTION_VIEW, ttt); 
      String arr[] = name.split("\\."); 
      inten.setDataAndType(ttt, "audio/" + arr[arr.length - 1]); 
      PendingIntent i = PendingIntent.getActivity(getBaseContext(), 
        0, inten, 0); 
      mBuilder.setContentIntent(i); 
      notificationManager.notify(nin, mBuilder.build()); 
     } else { 
      mBuilder.setContentTitle("Downloading: " + name) 
        .setContentText(progress + " %") 
        .setSmallIcon(R.drawable.icon).setAutoCancel(false) 
        .setOngoing(true); 
      mBuilder.setProgress(100, progress, false); 
      notificationManager.notify(nin, mBuilder.build()); 
     } 
    } else { 
     if (tmout == 1) { 
      mBuilder.setSmallIcon(R.drawable.icon) 
        .setContentTitle("Failed: " + name) 
        .setContentText(progress + " %").setAutoCancel(true) 
        .setProgress(100, progress, false).setOngoing(false); 
      // Intent intnt = new Intent(Mp3Constants.NOTIFICATION); 
      // intnt.putExtra("resume", "1"); 
      // intnt.putExtra("url", urlD); 
      // intnt.putExtra("name", name); 
      // intnt.putExtra("nin", nin); 
      // PendingIntent i = PendingIntent 
      // .getBroadcast(conte, 0, intnt, 0); 
      // mBuilder.setContentIntent(i); 
     } else if (tmout == 7) { 
      mBuilder.setSmallIcon(R.drawable.icon) 
        .setContentTitle("Cancelled: " + name) 
        .setAutoCancel(true).setProgress(100, progress, false) 
        .setOngoing(false); 
      // Intent intnt = new Intent(Mp3Constants.NOTIFICATION); 
      // intnt.putExtra("resume", "1"); 
      // intnt.putExtra("url", urlD); 
      // intnt.putExtra("name", name); 
      // intnt.putExtra("nin", nin); 
      // PendingIntent i = PendingIntent 
      // .getBroadcast(conte, 0, intnt, 0); 
      // mBuilder.setContentIntent(i); 
     } else { 
      mBuilder.setSmallIcon(R.drawable.icon) 
        .setContentTitle("Interrupted: " + name) 
        .setContentText("No storage found").setAutoCancel(true) 
        .setOngoing(false); 
     } 

     notificationManager.notify(nin, mBuilder.build()); 
    } 
} 

private String viewSD(String naame) { 
    File f = new File(Environment.getExternalStorageDirectory().toString() 
      + "/Music"); 
    File[] files = f.listFiles(); 
    if (files == null) { 
     return naame; 
    } 

    while (true) { 
     String newName = naame; 
     naame = relooper(files, newName); 
     if (newName.equals(naame)) 
      break; 
    } 

    return naame; 
} 

public String relooper(File[] files, String name) { 
    int send = files.length; 
    for (int i = 0; i < send; i++) { 
     File file = files[i]; 
     String myfile = file 
       .getPath() 
       .substring(file.getPath().lastIndexOf("/") + 1, 
         file.getPath().length()).toLowerCase(); 
     if (name.equalsIgnoreCase(myfile)) 
      return "copy_of_" + name; 
    } 
    return name; 
} 

private boolean verifyFromSD(String naame) { 
    File f = new File(Environment.getExternalStorageDirectory().toString() 
      + "/Music"); 
    File[] files = f.listFiles(); 
    if (files == null) { 
     return false; 
    } 
    int send = files.length; 
    for (int i = 0; i < send; i++) { 
     File file = files[i]; 
     String myfile = file 
       .getPath() 
       .substring(file.getPath().lastIndexOf("/") + 1, 
         file.getPath().length()).toLowerCase(); 
     if (naame.equalsIgnoreCase(myfile)) 
      return true; 
    } 
    return false; 
} 

}

编辑：我发现从logcat的问题：

01-07 11:47:37.313: W/DownloadManager(18893): Exception for id 285: Illegal character  in path at index 115: http://dj-videos.us/Music/XclusiveSinGleTrack/320%20Kbps/November%202013/Yo%20Yo%20Honey%20Singh%20-%20Blue%20Eyes-[DJKANG.Com].mp3 
01-07 11:47:37.313: W/DownloadManager(18893): java.lang.IllegalArgumentException: Illegal character in path at index 115: http://dj-videos.us/Music/XclusiveSinGleTrack/320%20Kbps/November%202013/Yo%20Yo%20Honey%20Singh%20-%20Blue%20Eyes-[DJKANG.Com].mp3 
01-07 11:47:37.313: W/DownloadManager(18893): at java.net.URI.create(URI.java:727) 
01-07 11:47:37.313: W/DownloadManager(18893): at android.net.Proxy.getProxy(Proxy.java:113) 
01-07 11:47:37.313: W/DownloadManager(18893): at android.net.Proxy.getPreferredHttpHost(Proxy.java:218) 
01-07 11:47:37.313: W/DownloadManager(18893): at com.android.providers.downloads.DownloadThread.run(DownloadThread.java:174) 

但我还需要知道用来解析URL的格式为DownloadManager。

Answer 1

如果URL包含非法字符，例如[]，则发生IllegalArgumentException。正如评论中提到的，您需要使用URLEncoder对这些字符进行编码。

我实现这种方式在我的代码 -

private String checkUrl(String url) { 
    if(url.contains("[")) { 
      String[] a = url.split("\\["); 
      String b = "[" + a[1]; //contains text after [ e.g. [DJKANG.Com].mp3 
      url = a[0] + URLEncoder.encode(b, "UTF-8"); // encodes illegal characters 
     } 
    return url; 
}