$误差区域= NSCocoaErrorDomain代码= 512 \“的操作不能完成进度操作无法完成。$

误差区域= NSCocoaErrorDomain代码= 512 \“的操作不能完成进度操作无法完成。

Answer 08/08/2019 Developer FAQ 1

我想用将writeToFile到PIC图像存储的文件，却发现下面的错误，怎么解决呢？

错误域= NSCocoaErrorDomain代码= 512 “的操作无法完成。（可可错误512）”{NSFilePath = /用户/ alexqdh /库/应用程序支持/ iPhone模拟器/ 6.0 /应用/ XXX /文件/ girl.png ，NSUnderlyingError = 0x753e630“操作无法完成。是目录”}

-(NSString*)getImagePath:(NSString *)name
{
    NSArray *path =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,  NSUserDomainMask, YES);
    NSString *docPath = [path objectAtIndex:0];
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSString *finalPath = [docPath stringByAppendingPathComponent:name];
    [fileManager createDirectoryAtPath:finalPath withIntermediateDirectories:YES attributes:nil error:nil];
    return finalPath;
}
//below is how to use NSData writeToFile
AFImageRequestOperation *opera = [AFImageRequestOperation imageRequestOperationWithRequest:request imageProcessingBlock:nil
    success:^(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image) {
    img.image = image;
    [self.view addSubview:img];
    NSData *imageData = UIImagePNGRepresentation(img.image);
    if(imageData == nil)
    {
        NSLog(@"imageData nil");
    }
    NSString *picPath = [self getImagePath:@"girl.png"];
    NSLog(@"path:%@",picPath);
    NSError *error = [[NSError alloc]init];
    BOOL a = [imageData writeToFile:picPath options:NSDataWritingAtomic error:&error];
    if(a == YES)
    {
        NSLog(@"YES");
    }
    else
    {
        NSLog(@"NO.error:%@", error);
    }

    /*NSData *imageData = UIImagePNGRepresentation(img.image);
    NSString *picPath = [self getImagePath:@"girl.png"];
    [imageData writeToFile:picPath atomically:YES];*/

    NSLog(@"Got it.code:%d",response.statusCode);
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error) {
    NSLog(@"Failed pic.error:%@",error);
}];

[opera start];

Answer 1:

这个Question是通过创建与图像的名称的目录，然后试图写一个文件来取代目录引起的。换句话说，你首先创建一个名为：

文件/ girl.png /

然后尝试写入文件的路径：

文件/ girl.png

显然，这不是你的意思做。在您的getImagePath:方法，摆脱调用创建的目录。该Documents目录将已经存在。当然，你不想对应文件名的目录。

另一种选择是改变你的getImagePath:到：

- (NSString*)getImagePath:(NSString *)name {
    NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,  NSUserDomainMask, YES);
    NSString *docPath = [path objectAtIndex:0];
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSString *finalPath = [docPath stringByAppendingPathComponent:name];

    // Remove the filename and create the remaining path
    [fileManager createDirectoryAtPath:[finalPath stringByDeletingLastPathComponent] withIntermediateDirectories:YES attributes:nil error:nil];

    return finalPath;
}

这个更新的代码现在支持你顺便name值，其中包括你可能想子目录。

文章来源: Error Domain=NSCocoaErrorDomain Code=512 \"The operation couldn’t be completed.The operation couldn’t be completed. Is a directory