"操作无法完成.(可可错误512.)"

Question

我有这个代码,应该是完美的工作,但我不能udnerstand为什么它不是:

+(NSString *)writeImageToFile:(UIImage *)image {

    NSData *fullImageData = UIImageJPEGRepresentation(image, 1.0f);


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

    NSFileManager *fileManager = [NSFileManager defaultManager];
    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];
        if (!success) {
            NSLog(@"Failed to create directory with error: %@", [error description]);
        }
    }

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

    return filePath;
}

它传递了directoryExists而没有错误,但是当它到达writeToFile时,它给了我这个错误:

Error Domain=NSCocoaErrorDomain Code=512 "The operation couldn’t be completed. (Cocoa error 512.)" UserInfo=0x5634ee0 {NSFilePath=/var/mobile/Applications/5E25F369-9E05-4345-A0A2-381EDB3321B8/Documents/Images/18DAE0BD-6CB4-4244-8ED1-9031393F6DAC.jpg, NSUnderlyingError=0x5625010 "The operation couldn’t be completed. Not a directory"}

任何想法为什么会这样？

Answer 1

在路径中首先写入文件时,我能够重现您的错误@"Documents/Images/",然后尝试使用您的代码编写图像.

我认为有两种可能的情况:

1)您之前执行的应用程序错误地创建了该文件.如果您使用以下菜单重置模拟器,将解决此问题:iOS模拟器>重置内容和设置,以及从您的设备卸载应用程序:长按>单击x符号.

2)您的应用程序中的某个地方有一些代码可以创建此文件.如果是这种情况,您应该找到此代码并将其删除.