contentprovider 에서 MatrixCursor를 사용하려고하는데요.. 이렇게 쓰는게 맞는지 모르겠녜요 ;;
MatrixCursor를 이용해서 새로운 데이터의 커서를 보내고 싶은데 말이죠 ㅠㅠ
부탁드립니다 ㅠㅠ
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public Cursor query(Uri uri, String[] projection, String selection,
   String[] selectionArgs, String sortOrder) {
  String sql;
  MatrixCursor result = null;
  
  // 전체에 대한 쿼리 명령
  sql = "SELECT id, backup_id, package_name, file_path, file_name,file_type FROM BACK_UP_FILE_INFO";
  
  /*
  // 단어 선택 where절 추가
  if (Matcher.match(uri) == ONEFILE) {
   sql += " where eng = '" + uri.getPathSegments().get(1) + "'";
  }*/
  if(Matcher.match(uri)== BACKUP)//백업이라는 uri가 붙어올때
  {
   ArrayList<backUpFileInfo> backUpFiles = new ArrayList<backUpFileInfo>();
         backUpFiles.add(new backUpFileInfo("test.txt",0,"/sdcard/ar2","exam.Data"));
         backUpFiles.add(new backUpFileInfo("test.txt",0,"/sdcard/","exam.Data"));
         try {
    if(backUpFiles.get(0).CopyToSdcard()){// 복사 성공시
     backUpFiles.get(1).CopyToSdcard();
     result = new MatrixCursor(new String[]{"pakage_name","file_path","file_name","file_type"});
     
     result.addRow(new Object[] {
       backUpFiles.get(0).getpackage_name(),
       backUpFiles.get(0).getFile_path(),
       backUpFiles.get(0).getFile_name(),
       backUpFiles.get(0).getFile_type()
     });
     result.addRow(new Object[] {
       backUpFiles.get(1).getpackage_name(),
       backUpFiles.get(1).getFile_path(),
       backUpFiles.get(1).getFile_name(),
       backUpFiles.get(1).getFile_type()
     });
    }
   } catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
  //Cursor cursor = mDB.rawQuery(sql, null);
  return result;
 }