Fetching and displaying facebook profile picture in a UIImage - iphone

Question

I'm trying to make a facebook friend picker displaying the friends who currently have the app installed that are also facebook friends with the current user.
Here I'm fetching the user's facebook profile picture but, I seem to have a warning where the last statement is not used. Thanks for your help.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"friendCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
PFUser *facebookID = [[PFUser alloc] init];
facebookID = [friendUsers objectAtIndex:0];
NSString *fbIdString = [[NSString alloc] init];
fbIdString = [facebookID objectForKey:#"fbId"];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
NSURL *profilePictureURL = [NSURL URLWithString:[NSString stringWithFormat:#"https://graph.facebook.com/%#/picture?type=large", fbIdString]];
NSData *picData = [NSData dataWithContentsOfURL:profilePictureURL];
UIImage *fbPic = (UIImage *)[self.view viewWithTag:1001];
[fbPic initWithData:picData];
}
// Configure the cell...
return cell;
}

Answer 1

You need to actually assign the result of the initWithData: call to your fbPic image.
E.g.
fbPic = [fbPic initWithData: picData];
From the apple documentation on UIImage:
- (id)initWithData:(NSData *)data
Parameters
data -
The data object containing the image data.
Return Value
An initialized UIImage object, or nil if the method could not initialize the image from the specified data.

Answer 2

A couple of things:
UIImage *fbPic = (UIImage *)[self.view viewWithTag:1001]; - I think you're trying to get the UIImageView from the cell?
There's no UIImageView where you're actually showing the image.
It should be something like this:
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
NSURL *profilePictureURL = [NSURL URLWithString:[NSString stringWithFormat:#"https://graph.facebook.com/%#/picture?type=large", fbIdString]];
NSData *picData = [NSData dataWithContentsOfURL:profilePictureURL];
UIImageView *fbPicImageView = (UIImageView *)[self.view viewWithTag:1001];
[fbPicImageView setImage:[UIImage imageWithData:picData]];
}