小编Stu*_*ium的帖子

我目前在从ViewController转移到PFFile的子类时数据丢失时遇到了一些麻烦.传递的数据是要上载到用户配置文件的图像数据.这是选择图像的代码:

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
// Access the uncropped image from info dictionary
UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

// Dismiss controller
[picker dismissViewControllerAnimated:YES completion:nil];

// Resize image
_focusedImage.image = image;


NSData *imageData = UIImageJPEGRepresentation(image, 0.05f);
PFFile *imageFile = [PFFile fileWithName:@"Image.jpg" data:imageData];
[[imageUpload uploadImage] setImagePFFile:imageFile];
}

imageFile此视图中的登录正确打印出来.但是,当我将数据传递给我的单例类时,imageUpload uploadImage这就是数据结构的样子:

+ (imageUpload *) uploadImage
{
static imageUpload*_sharedImageUpload = nil;
_sharedImageUpload = [[self alloc] init];
_sharedImageUpload.imageData = [[NSData alloc] init];

PFUser *user = [PFUser currentUser];
_sharedImageUpload.imagePFFile = [[PFFile alloc] …