Databases
StackOverflow2013
Postsdbo
POTWRequest in background
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POTWRequest in background
    primarykey
    data
    text
    <pre><code>- (void)fetchImages { if (self.profileImages == nil) { self.profileImages = [[NSMutableDictionary alloc] initWithCapacity:200]; } dispatch_async(dispatch_get_global_queue(0, 0), ^{ for (id tweet in self.timeline) { TWRequest *fetchUserImageRequest = [[TWRequest alloc] initWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://api.twitter.com/1/users/profile_image/%@", [tweet valueForKeyPath:@"user.screen_name"]]] parameters:nil requestMethod:TWRequestMethodGET]; [fetchUserImageRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) { if ([urlResponse statusCode] == 200) { [self.profileImages setObject:[UIImage imageWithData:responseData] forKey:[tweet valueForKeyPath:@"user.screen_name"]]; NSArray *indexPath = [NSArray arrayWithObject:[NSIndexPath indexPathForRow:[self.timeline indexOfObject:tweet] inSection:0]]; [self.tableView reloadRowsAtIndexPaths:indexPath withRowAnimation:UITableViewRowAnimationNone]; } }]; } }); } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"FavoriteCell"]; // configure cell id tweet = [self.timeline objectAtIndex:[indexPath row]]; UILabel *tweetLabel = (UILabel *)[cell viewWithTag:102]; tweetLabel.text = [tweet objectForKey:@"text"]; UILabel *usernameLabel = (UILabel *)[cell viewWithTag:101]; usernameLabel.text = [tweet valueForKeyPath:@"user.name"]; UIImageView *profileImage = (UIImageView *)[cell viewWithTag:100]; profileImage.image = [self.profileImages objectForKey:[tweet valueForKeyPath:@"user.screen_name"]]; UILabel *dateLabel = (UILabel *)[cell viewWithTag:103]; NSString *labelString = [[tweet objectForKey:@"created_at"] substringToIndex:10]; dateLabel.text = labelString; return cell; } </code></pre> <p>I get the timeline then want to get the profile images for all of users in the timeline. I need to loop through the tweets and get the image. I'm curious how I can determine when all of the images have been fetched then reload the tableview. As of now this isn't happening. The TWRequest is running after the table is reloaded. What am I doing wrong here? Maybe there is a better way to do this?</p> <p>Thanks a lot. </p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USkschins
    1. USkschins
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POTWRequest in background
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI updated the method above to reflect what it currently stands as when I'm receiving the error below.
      singulars
      1. POTWRequest in background
      1. USkschins
    2. COEdited my response, forget the beginUpdates/endUpdates. I think it should all be solved now.
      singulars
      1. POTWRequest in background
      1. USfbernardo
    3. COYeah, I don't know. This is also what I tried since I know UI updates are supposed to be handled by the main thread but the same error. I will have to investigate it a bit more on my own. I'm not sure why the table view update is inconsistent. This method should be okay.
      singulars
      1. POTWRequest in background
      1. USkschins
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload