如何将FBProfile图片导入UIImageView

Question

I have an iOS app that integrated with FBLoging. And I know it can assign the profile picture into a UIView like this.

// This method will be called when the user information has been fetched - (void)loginViewFetchedUserInfo:(FBLoginView *)loginView user:(id<FBGraphUser>)user { self.profilePictureView.profileID = user.id; }

But what I wanna do is to get that profile picture into my already available UIImageView . In order to do this I have a Singleton class. I want to get that image as a UIImage and assign to the variable inside that Singleton class. When another Viewcontroller load I want to assign that singleton class's UIImage into my Viewcontroller 's UIImageView

How can I do this. please help me. Thank you

Answer 1

You can get the image from the profilePictureImageView using this answer . Once you have the image, then you can save it in your Singleton class as is or you can assign it to your imageView.

The method in the link only works once the image has been downloaded into the profilePictureImageView. So you need to take care of that, maybe by waiting. Or keep checking it for non nil value after some time in succession.

Answer 2

you can try following method

[[FBRequest requestForMe] startWithCompletionHandler:^(FBRequestConnection *connection, NSDictionary<FBGraphUser> *FBuser, NSError *error) {
    if (error) {
      // Handle error
    }

    else {
      NSString *userName = [FBuser name];
      NSString *userImageURL = [NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?type=large", [FBuser id]];
    }
  }];

you have to store this url into your singleton class

Answer 3

If you have Facebook user.id with you, you can create the imageURL like this

   NSString * url = [NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?type=large",user.objectID];

Then save this url to your singleton class. And you can download like this if you need.(You can download each time you required or download once and save in to a file, if required ,fetch from file).

NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:url]]];
UIImage *userImage = [UIImage imageWithData:data];