SQLite DataBase 를 SDCARD 로 복사(백업)하려 하는데 폴더만 생성되고 DB 파일은 복사 되지 않습니다.
코드를 첨부 하오니 좀 봐 주세요......
아무런 에러도 뜨는게 없습니다.

API level = 7,
퍼미션은 아래같이 했구요....
 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
 <uses-permission android:name="android.permission.READ_OWNER_DATA"></uses-permission>


        try {      
         File sdcardDir = Environment.getExternalStorageDirectory();        
         String backupDBPath = "Android/data/com.reminder/";
         File backupDir = new File(sdcardDir,  backupDBPath);
         backupDir.mkdir();
         if (backupDir.canWrite()){
          String currentDBdir = "data/data/com.reminder/databases/";
          String currentDBfile = "AVreminder35.db";
          String backupDBdir = "Android/data/com.reminder/";
          String backupDBfile = "AVreminder35.db";
          File dbDatadir = Environment.getDataDirectory();
          File originalDir = new File(dbDatadir, currentDBdir);
          File originalDB = new File(originalDir, currentDBfile);         
          File backupDB = new File(backupDBdir, backupDBfile);   
           if (originalDB.exists()) {          
            FileChannel src = new FileInputStream(originalDB).getChannel();          
            FileChannel dst = new FileOutputStream(backupDB).getChannel();          
            dst.transferFrom(src, 0, src.size());          
            src.close();          
            dst.close();
           }
          }
         }
      catch (Exception e) {
     }








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