utworzyć folder programowo w Xcode - Cel C

Question

Używam następujący wiersz kodu, aby zapisać mój plik yoyo.txt w folderze Documents ::

NSString *docDir = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]; 
NSLog(@"docDir is yoyo :: %@", docDir); 
NSString *FilePath = [docDir stringByAppendingPathComponent:@"yoyo.txt"]; 

Jednak życzę, aby zapisać swój plik w folder yoyo czyli w folderze Dokumenty, tzn. chcę utworzyć kolejny folder o nazwie "yoyo", a następnie zapisać w nim plik yoyo.txt. Jak mogę to zrobić ?? Dzięki.

Answer 1

Oto przykładowy kod (zakładamy manager jest [NSFileManager defaultManager]):

BOOL isDirectory; 
NSString *yoyoDir = [docDir stringByAppendingPathComponent:@"yoyo"]; 
if (![manager fileExistsAtPath:yoyoDir isDirectory:&isDirectory] || !isDirectory) { 
     NSError *error = nil; 
     NSDictionary *attr = [NSDictionary dictionaryWithObject:NSFileProtectionComplete 
                 forKey:NSFileProtectionKey]; 
     [manager createDirectoryAtPath:yoyoDir 
      withIntermediateDirectories:YES 
          attributes:attr 
           error:&error]; 
     if (error) 
      NSLog(@"Error creating directory path: %@", [error localizedDescription]); 
    } 

Answer 2

+(void)createDirForImage :(NSString *)dirName 
{ 
    NSString *path; 
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
    path = [[paths objectAtIndex:0] stringByAppendingPathComponent:dirName]; 
    NSError *error; 
    if (![[NSFileManager defaultManager] fileExistsAtPath:path]) //Does directory already exist? 
    { 
     if (![[NSFileManager defaultManager] createDirectoryAtPath:path 
             withIntermediateDirectories:NO 
                 attributes:nil 
                  error:&error]) 
     { 
      NSLog(@"Create directory error: %@", error); 
     } 
    } 

} 

Answer 3

Tutaj DataPath będzie ostateczna droga do zapisywania pliku

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
     NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder 
     NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"/yoyo"]; 

     if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath]){ 
      [[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error]; //Create folder 
    } 
    dataPath = [dataPath stringByAppendingPathComponent:@"/yoyo.txt"];