iOS中判斷一個文件夾是否存在

#define DOCUMENTS_FOLDER_AUDIO @"" //你定義的audio對應的文件目錄
#define DOCUMENTS_FOLDER_VEDIO @"" //你定義的vedio對應的文件目錄
 
 - (void)createFileDirectories
 {
     
     // 判斷存放音頻、視頻的文件夾是否存在，不存在則創建對應文件夾
     
     NSFileManager *fileManager = [NSFileManager defaultManager];
     
     BOOL isDir = FALSE;
     
     BOOL isDirExist = [fileManager fileExistsAtPath:DOCUMENTS_FOLDER_AUDIO
                                         isDirectory:&isDir];
     
     
     
     if(!(isDirExist && isDir))
         
     {
         
         BOOL bCreateDir = [fileManager createDirectoryAtPath:DOCUMENTS_FOLDER_AUDIO
                                  withIntermediateDirectories:YES
                                                   attributes:nil
                                                        error:nil];
         
         if(!bCreateDir){
             
             NSLog(@"Create Audio Directory Failed.");
             
         }
         
         NSLog(@"%@",DOCUMENTS_FOLDER_AUDIO);
         
     }
     
     
     
     isDir = FALSE;
     
     isDirExist = [fileManager fileExistsAtPath:DOCUMENTS_FOLDER_VEDIO
                                    isDirectory:&isDir];
     
     
     
     if(!(isDirExist && isDir)){
         
         BOOL bCreateDir = [fileManager createDirectoryAtPath:DOCUMENTS_FOLDER_VEDIO
                                  withIntermediateDirectories:YES
                                                   attributes:nil
                                                        error:nil];
         
         if(!bCreateDir){
             
             NSLog(@"Create Audio Directory Failed.");
             
         }
         
         NSLog(@"%@",DOCUMENTS_FOLDER_VEDIO);
         
     }
     
 }