如何获取除一个之外的所有目录的列表？

Question

由于特殊目的，我想列出SDCARD中的一个目录中的所有目录，除了一个具有特定名称的目录。

比方说，我有四个目录DIR1，DIR2，DIR3，父一个妈妈 dir4。现在，我想列出DIR1，DIR2和dir4只有，而不是DIR3，所以在列表中，则有：

• DIR1
• DIR2
• dir4

如何以编程方式执行此操作？请参阅下面的代码。非常感谢你。

public class DatabaseFileList { 
static final private String FILELIST_TAG = "[DatabaseFileList]"; 

public ArrayList<DatabaseFile> items; 

public DatabaseFileList(String dbPath, String dbExtension) 
{  
    items = new ArrayList<DatabaseFile>(); 

    getDatabaseFileList(dbPath,dbExtension); 
} 

private void getDatabaseFileList(String dbPath, String dbExtension) 
{ 
    items.clear(); 

    File dataDirectory = new File(dbPath); 
    if (!dataDirectory.exists()) //Data directory doesn't exist, create it 
    { 
     if (!dataDirectory.mkdirs()) 
     { 
      Log.i(FILELIST_TAG, "Cannot create directory on sdcard"); 
     } 
     else 
     { 
      Log.i(FILELIST_TAG, "Data directory was created on sdcard"); 
     } 
    } 

    File dataDirectoryAV = new File(dbPath + "dir1"); 
    if (!dataDirectoryAV.exists()) //Data directory doesn't exist, create it 
    { 
     if (!dataDirectoryAV.mkdirs()) 
     { 
      Log.i(FILELIST_TAG, "Cannot create dir1 on sdcard"); 
     } 
     else 
     { 
      Log.i(FILELIST_TAG, "dir1 was created on sdcard"); 
     } 
    } 

    File dataDirectoryVA = new File(dbPath + "dir2"); 
    if (!dataDirectoryVA.exists()) //Data directory doesn't exist, create it 
    { 
     if (!dataDirectoryVA.mkdirs()) 
     { 
      Log.i(FILELIST_TAG, "Cannot create dir2 on sdcard"); 
     } 
     else 
     { 
      Log.i(FILELIST_TAG, "dir2 was created on sdcard"); 
     } 
    } 

    File dataDirectoryVAkd = new File(dbPath + "dir3"); 
    if (!dataDirectoryVAkd.exists()) //Data directory doesn't exist, create it 
    { 
     if (!dataDirectoryVAkd.mkdirs()) 
     { 
      Log.i(FILELIST_TAG, "Cannot create dir3 on sdcard"); 
     } 
     else 
     { 
      Log.i(FILELIST_TAG, "dir3 was created on sdcard"); 
     } 
    } 

    File dataDirectoryVAkd = new File(dbPath + "dir4"); 
    if (!dataDirectoryVAkd.exists()) //Data directory doesn't exist, create it 
    { 
     if (!dataDirectoryVAkd.mkdirs()) 
     { 
      Log.i(FILELIST_TAG, "Cannot create dir4 on sdcard"); 
     } 
     else 
     { 
      Log.i(FILELIST_TAG, "dir4 was created on sdcard"); 
     } 
    } 

    FileFilter ffDir = new FileFilter() 
    { 
     public boolean accept(File f) 
     { 
      return f.isDirectory(); 
     } 
    }; 

    File[] lstDirectory = dataDirectory.listFiles(ffDir); 

    if (lstDirectory != null && lstDirectory.length > 0) 
    { 
     for (File currentDirectory : lstDirectory) 
     { 
      DatabaseFile db = new DatabaseFile(); 
      String path = currentDirectory.getAbsolutePath() + "/" + currentDirectory.getName(); 
      //Log.i(FILELIST_TAG,"Filelist path = " + path); 

      db.fileName = currentDirectory.getName(); 
      db.path = currentDirectory.getPath(); 

      File ifoFile = new File(path + ".ifo"); 

      if (ifoFile.exists()) 
      { 

       String data; 
       String arrData[] = null; 
       try 
       { 
        BufferedReader brIfoFile = new BufferedReader(new FileReader(ifoFile)); 
        while (brIfoFile.ready()) 
        { 
         data = brIfoFile.readLine(); 
         arrData = data.split("="); 
         arrData[0] = arrData[0].trim(); 
         if (arrData[0].equals("name")) 
         { 
          db.dictionaryName = arrData[1].trim(); 

         } 
         else if (arrData[0].equals("from")) 
         { 
          db.sourceLanguage = arrData[1].trim(); 
          //Log.i(FILELIST_TAG, "from = " + arrData[1]); 
         } 
         else if (arrData[0].equals("to")) 
         { 
          db.destinationLanguage= arrData[1].trim(); 
          //Log.i(FILELIST_TAG, "to = " + arrData[1]); 
         } 
         else if (arrData[0].equals("style")) 
         { 
          db.style= arrData[1].trim(); 
          //Log.i(FILELIST_TAG, "style = " + arrData[1]); 
         } 
        } 
       } 
       catch (Exception ex){ 
        db.dictionaryName = db.fileName + " File not read!"; 
        Log.e(FILELIST_TAG, "Can not read ifo file!"); 
       } 
      } 
      else 
      { 
       db.dictionaryName = db.fileName + " - No DB in sdcard/mom/"; 
       Log.i(FILELIST_TAG, "No ifo file found, set db name to file name"); 
      } 
      //add to list 
      items.add(db); 
     } 
     Log.i(FILELIST_TAG,"Found " + items.size() + " dictionaries"); 
    } 
    else 
    { 
     Log.i(FILELIST_TAG,"Do not find any valid db"); 
    } 
} 
} 

Answer 1

实现java.io.FilenameFilter？或者对结果运行过滤器（排除列表）。