Parse.com保存图像IOS

我正尝试使用以下代码将图像保存到parse.com：

        NSData *imageData = UIImagePNGRepresentation(profileImage);
        PFFile *imageFile = [PFFile fileWithName:@"Profileimage.png" data:imageData];
        [imageFile saveInBackground];


        PFUser *user = [PFUser currentUser];
        user[@"fullName"] = name;
        user[@"Location"] = location;
        user[@"gender"] = gender;
        user[@"email"] = email;
        user[@"ProfilePic"] = imageFile;
        [user saveInBackground];

NSURL *pictureURL = [NSURL URLWithString:[NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?type=large&return_ssl_resources=1", facebookID]];
            NSData *data = [[NSData alloc] initWithContentsOfURL:pictureURL];

            UIImage *profileImage = [[UIImage alloc] initWithData:data];

问题是，这似乎并没有保存要解析的图像文件，因为我的数据浏览器中没有填充任何内容。这里的代码对我来说很好，但你们能看到它有什么问题吗

该图像正在从Facebook下载，代码如下：

        NSData *imageData = UIImagePNGRepresentation(profileImage);
        PFFile *imageFile = [PFFile fileWithName:@"Profileimage.png" data:imageData];
        [imageFile saveInBackground];


        PFUser *user = [PFUser currentUser];
        user[@"fullName"] = name;
        user[@"Location"] = location;
        user[@"gender"] = gender;
        user[@"email"] = email;
        user[@"ProfilePic"] = imageFile;
        [user saveInBackground];

NSURL *pictureURL = [NSURL URLWithString:[NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?type=large&return_ssl_resources=1", facebookID]];
            NSData *data = [[NSData alloc] initWithContentsOfURL:pictureURL];

            UIImage *profileImage = [[UIImage alloc] initWithData:data];

有什么想法吗

---

谢谢

问题在于

[imageFile saveInBackground][user saveInBackground]时，尚未执行code>操作

当您调用第一次后台保存时，程序将继续运行

改用
saveinbackgroundithblock
，然后在那里执行
[user saveInBackground]
操作

NSData *imageData = UIImagePNGRepresentation(profileImage);
PFFile *imageFile = [PFFile fileWithName:@"Profileimage.png" data:imageData];
[imageFile saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
    if (!error) {
        if (succeeded) {
           PFUser *user = [PFUser currentUser];
            user[@"fullName"] = name;
            user[@"Location"] = location;
            user[@"gender"] = gender;
            user[@"email"] = email;
            user[@"ProfilePic"] = imageFile;
            [user saveInBackground];
        }
    } else {
         // Handle error
    }        
}];