UIActivityIndicatorView Not Appearing - ios

Question

I am trying to show a UIActivityIndicatorView while my table view is loading data and have it disappear once loading is finished. The loading indicator never appears. What am I doing wrong?
#define kBgQueue dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
#define storeURL [NSURL URLWithString: #"https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&maxResults=25&playlistId=PL9DC706DCCCE00188&key=AIzaSyBS4do208_KPGHAhszfVkHadSvtfSgr7Mo"]
#import "BBYoutubeVideosTableViewController.h"
#import "Reachability.h"
#import "TSMessage.h"
#import "TSMessageView.h"
#import "YoutubeCell.h"
#import "KFBYoutubeVideoView.h"
#import "KFBAppDelegate.h"
#interface BBYoutubeVideosTableViewController ()
{
UIActivityIndicatorView *loadingIndicator;
}
#end
#implementation BBYoutubeVideosTableViewController
#synthesize title, videoID, thumbURL, descriptionString, url, titleArray, videoIDArray, thumbArray, descriptionArray;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"" style:UIBarButtonItemStylePlain target:nil action:nil];
UIImageView *backgroundImage = [[UIImageView alloc]initWithImage:[UIImage imageNamed:#"plain_app-background.png"]];
CGFloat width = [[UIScreen mainScreen]bounds].size.width;
CGFloat height = [[UIScreen mainScreen]bounds].size.height;
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)
{
loadingIndicator = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(width / 2, height / 2, 37, 37)];
loadingIndicator.center = CGPointMake(width / 2, height / 2 - 37);
}
else
{
loadingIndicator = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(142, 365, 37, 37)];
}
loadingIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
loadingIndicator.hidesWhenStopped = YES;
Reachability *networkReachability = [Reachability reachabilityForInternetConnection];
NetworkStatus networkStatus = [networkReachability currentReachabilityStatus];
if(networkStatus == NotReachable)
{
[TSMessage showNotificationWithTitle:#"Network Error" subtitle:#"No active network connection!" type:TSMessageNotificationTypeError];
[loadingIndicator stopAnimating];
}
else {
[self.tableView addSubview:loadingIndicator];
[loadingIndicator startAnimating];
}
self.title = #"Bluegrass & Backroads";
self.tableView = [[UITableView alloc]initWithFrame:CGRectZero style:UITableViewStyleGrouped];
self.tableView.backgroundView = backgroundImage;
url = [NSURL URLWithString:#"https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&maxResults=25&playlistId=PL9DC706DCCCE00188&key=AIzaSyBS4do208_KPGHAhszfVkHadSvtfSgr7Mo"];
dispatch_async(kBgQueue, ^{
NSData *data = [NSData dataWithContentsOfURL:url];
if (data == nil)
{
NSLog(#"data is nil");
}
else
{
[self performSelectorOnMainThread:#selector(fetchedData:) withObject:data waitUntilDone:YES];
}
});
}
- (void)viewDidDisappear:(BOOL)animated
{
[loadingIndicator stopAnimating];
}
- (void)fetchedData:(NSData *)responseData
{
NSError *error;
titleArray = [[NSMutableArray alloc]init];
videoIDArray = [[NSMutableArray alloc]init];
thumbArray = [[NSMutableArray alloc]init];
descriptionArray = [[NSMutableArray alloc]init];
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:&error];
NSArray *items = [json objectForKey:#"items"];
for (NSDictionary *item in items)
{
NSDictionary *snippet = [item objectForKey:#"snippet"];
title = [snippet objectForKey:#"title"];
videoID = [[snippet objectForKey:#"resourceId"] objectForKey:#"videoId"];
thumbURL = [[[snippet objectForKey:#"thumbnails"] objectForKey:#"default"] objectForKey:#"url"];
descriptionString = [snippet objectForKey:#"description"];
[titleArray addObject:title];
[videoIDArray addObject:videoID];
UIImage *thumbnailImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:thumbURL]]];
[thumbArray addObject:thumbnailImage];
[descriptionArray addObject:descriptionString];
}
[self.tableView reloadData];
[loadingIndicator stopAnimating];
}
- (IBAction)morePressed:(id)sender
{
NSURL *kyfbVideos = [NSURL URLWithString:#"https://www.youtube.com/playlist?list=PL9DC706DCCCE00188"];
[[UIApplication sharedApplication] openURL:kyfbVideos];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [titleArray count];
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 215;
}
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
return 60;
}
- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
UIColor *kfbBlue = [UIColor colorWithRed:8.0/255.0f green:77.0/255.0f blue:139.0/255.0f alpha:1];
UIView *footerView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.frame.size.width, tableView.frame.size.height)];
footerView.backgroundColor = [UIColor clearColor];
CGFloat width = footerView.frame.size.width;
UIButton *moreButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
moreButton.backgroundColor = [UIColor clearColor];
[moreButton setTitle:#"More" forState:UIControlStateNormal];
[moreButton setTitleColor:kfbBlue forState:UIControlStateNormal];
moreButton.titleLabel.textAlignment = NSTextAlignmentCenter;
moreButton.titleLabel.font = [UIFont fontWithName:#"FranklinGothicStd-ExtraCond" size:25.0];
moreButton.frame = CGRectMake(width / 2 - 25, 0, 50, 50);
moreButton.layer.cornerRadius = 25.0;
moreButton.layer.borderWidth = 2.0f;
moreButton.layer.borderColor = kfbBlue.CGColor;
moreButton.clipsToBounds = YES;
moreButton.backgroundColor = [UIColor clearColor];
[moreButton addTarget:self action:#selector(morePressed:) forControlEvents:UIControlEventTouchUpInside];
[footerView addSubview:moreButton];
return footerView;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UIColor *kfbBlue = [UIColor colorWithRed:8.0/255.0f green:77.0/255.0f blue:139.0/255.0f alpha:1];
YoutubeCell *cell = [tableView dequeueReusableCellWithIdentifier:#"youtubeCell"];
if (!cell)
{
NSArray *nibs =[[NSBundle mainBundle] loadNibNamed:#"YoutubeCell" owner:self options:NULL];
cell = [nibs firstObject];
}
cell.videoTitle.text = [titleArray objectAtIndex:indexPath.row];
cell.videoDescription.text = [descriptionArray objectAtIndex:indexPath.row];
cell.videoThumbnail.image = [thumbArray objectAtIndex:indexPath.row];
cell.videoTitle.textColor = kfbBlue;
cell.videoDescription.textColor = kfbBlue;
cell.videoTitle.font = [UIFont fontWithName:#"FranklinGothicStd-ExtraCond" size:22.0];
cell.videoDescription.font = [UIFont fontWithName:#"FranklinGothicStd-ExtraCond" size:16.0];
cell.backgroundColor = [UIColor clearColor];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)
{
KFBYoutubeVideoView *videoView = [[KFBYoutubeVideoView alloc]init];
videoView.videoIDString = [videoIDArray objectAtIndex:indexPath.row];
videoView.videoTitle = [titleArray objectAtIndex:indexPath.row];
videoView.videoDescription = [descriptionArray objectAtIndex:indexPath.row];
[self.navigationController pushViewController:videoView animated:YES];
}
else
{
KFBYoutubeVideoView *videoView = [[KFBYoutubeVideoView alloc]initWithNibName:nil bundle:nil];
videoView.videoIDString = [videoIDArray objectAtIndex:indexPath.row];
videoView.videoTitle = [titleArray objectAtIndex:indexPath.row];
videoView.videoDescription = [descriptionArray objectAtIndex:indexPath.row];
NSMutableArray *details = [self.splitViewController.viewControllers mutableCopy];
UINavigationController *detailNav = [[UINavigationController alloc]initWithRootViewController:videoView];
[details replaceObjectAtIndex:1 withObject:detailNav];
KFBAppDelegate *appDelegate = (KFBAppDelegate *)[[UIApplication sharedApplication]delegate];
appDelegate.splitViewController.viewControllers = details;
appDelegate.window.rootViewController = self.splitViewController;
appDelegate.splitViewController.delegate = videoView;
[appDelegate.splitViewController viewWillAppear:YES];
}
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end

Answer 1

I figured it out. tableView was being initialized after adding loadingIndicator as a subview.