我正在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];
问题是这似乎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看起来不错,但是你们能看出它有什么问题吗?
图像是使用以下代码从 Facebook 下载的:
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
最佳答案
问题是调用[user saveInBackground];
时[imageFile saveInBackground];
操作还没有执行
当您调用第一个后台保存时,程序会继续运行。
改用saveInBackgroundWithBlock
,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
}
}];
关于ios - Parse.com 保存图像 IOS,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22820842/