目錄未創建

Question

我不確定爲什麼此代碼無法正常工作。它出現的目錄存在，但後來聲稱它不。

+(NSString *)writeImageToFile:(UIImage *)image { 
    NSLog(@"image 3: %@", image); 
    NSData *fullImageData = UIImageJPEGRepresentation(image, 1.0f); 

    NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/Images/"]; 

    NSFileManager *fileManager = [NSFileManager defaultManager]; 
    if (![fileManager fileExistsAtPath:path isDirectory:nil]) { 
     BOOL success = [fileManager createDirectoryAtPath:path withIntermediateDirectories:NO attributes:nil error:nil]; 
     NSLog(@"success 1: %i", success); 
    } 

    NSString *name = [NSString stringWithFormat:@"%@.jpg", [JEntry generateUuidString]]; 
    NSString *filePath = [path stringByAppendingPathComponent:name]; 
    NSLog(@"file path: %@", filePath); 
    NSError *error = nil; 
    BOOL success = [fullImageData writeToFile:filePath options:NSDataWritingAtomic error:&error]; 
    if (!success) { 
     NSLog(@"Failed to write to file with error: %@", [error description]); 
    } 
} 

我的NSLog：

image 3: <UIImage: 0x6972820> 
file path: /var/mobile/Applications/5E25F369-9E05-4345-A0A2-381EDB3321B8/Documents/Images/3323E0F5-0B13-4CBA-898A-252212C65E2F.jpg 
Failed to write to file with error: Error Domain=NSCocoaErrorDomain Code=512 "The operation couldn’t be completed. (Cocoa error 512.)" UserInfo=0x6987e20 {NSFilePath=/var/mobile/Applications/5E25F369-9E05-4345-A0A2-381EDB3321B8/Documents/Images/3323E0F5-0B13-4CBA-898A-252212C65E2F.jpg, NSUnderlyingError=0x6977290 "The operation couldn’t be completed. Not a directory"} 

Answer 1

正如我的回答你剛纔的問題，我會給你一些代碼，以幫助您調試這個問題。

嘗試改變：

if (![fileManager fileExistsAtPath:path isDirectory:nil]) { 
    BOOL success = [fileManager createDirectoryAtPath:path withIntermediateDirectories:NO attributes:nil error:nil]; 
    NSLog(@"success 1: %i", success); 
} 

到：

BOOL isDirectory = NO; 
BOOL directoryExists = [fileManager fileExistsAtPath:path isDirectory:&isDirectory]; 
if (directoryExists) { 
    NSLog(@"isDirectory: %d", isDirectory); 
} else { 
    NSError *error = nil; 
    BOOL success = [fileManager createDirectoryAtPath:path withIntermediateDirectories:NO attributes:nil error:&error]; 
    NSLog(@"success 1: %i", success); 
    if (!success) { 
     NSLog(@"Failed to create directory with error: %@", [error description]); 
    } 
} 

我的猜測是， 「圖像」 是不是一個目錄。