problems with the UITableView - please advice - ios

Question

I have this piece of code and it should bring a ActivityIndicator (thats fine), then go out a query databases twice (looking at the logs it brings in all the correct info). I just STILL does not show up on the tableview and it is driving me crazy!! Can you if possible have a look over the code and see whats wrong - I have been on this for days now - please help!
[super viewDidLoad];
// create the activity indicator in the main queue
self.MainTableView.hidden = YES;
UIActivityIndicatorView *ac = [[UIActivityIndicatorView alloc]
initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
[self.view addSubview:ac];
[ac startAnimating];
self.client = [MSClient clientWithApplicationURLString:#"https://outnight-mobile.azure-mobile.net/" applicationKey:#"okYeRGfBagYrsbkaqWIRObeDtktjkF10"];
self.table = [self.client tableWithName:#"notifications"];
self.rowitems = [[NSMutableArray alloc] init];
MSQuery *query = [self.table query];
query.fetchLimit = 3;
[query readWithCompletion:^(NSArray *items, NSInteger totalCount, NSError *error)
{
self.rowitems = [items mutableCopy];
// we have the notifications and the barID in ROWITEMS array
// so lets make this into a dictionary so we can query it
// we need to run this next block of code 3 times, for the 3 bar ids we have got in ROWITEMS
//[self.TableView reloadData];
int a;
for (a = 0; a < 3; a++)
{
NSDictionary *apt = [self.rowitems objectAtIndex:a];
NSLog(#"%#", apt[#"barID"]);
NSDictionary *barIDDictionary = #{ #"myParam": apt[#"barID"]};
self.client = [MSClient clientWithApplicationURLString:#"https://outnight-mobile.azure-mobile.net/" applicationKey:#"okYeRGfBagYrsbkaqWIRObeDtktjkF10"];
[self.client invokeAPI:#"photos" body:barIDDictionary HTTPMethod:#"POST" parameters:nil headers:nil completion:^(id result, NSHTTPURLResponse *response, NSError *error) {
if (error) {
NSLog(#"Error %#", error );
}
else {
NSString *string = [NSString stringWithFormat:#"%#", [result objectForKey:#"rows"]];
NSString *stringWithoutbracketsend = [string stringByReplacingOccurrencesOfString:#")" withString:#""];
NSString *stringWithoutbracketsfront = [stringWithoutbracketsend stringByReplacingOccurrencesOfString:#"(" withString:#""];
NSString *completion = [stringWithoutbracketsfront stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSString *newStr = [completion substringFromIndex:1];
NSString *finalstring = [newStr substringToIndex:newStr.length-(newStr.length>0)];
[self.logoURL addObject:finalstring];
NSLog(#"%#",finalstring);
}
}];
}
}];
[self.MainTableView reloadData];
self.MainTableView.hidden = YES;
}
THIS IS ALL MY CODE THANKS
#import "ViewController.h"
#interface ViewController ()
#property (nonatomic, strong) MSTable *table;
#property (nonatomic, strong) NSMutableArray *items;
#property (nonatomic, strong) NSMutableArray *logoURL;
#property (weak, nonatomic) IBOutlet UITableView *MainTableView;
#end
#implementation ViewController {
dispatch_queue_t MyQueue;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// create the activity indicator in the main queue
self.MainTableView.hidden = YES;
UIActivityIndicatorView *ac = [[UIActivityIndicatorView alloc]
initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
[self.view addSubview:ac];
[ac startAnimating];
self.client = [MSClient clientWithApplicationURLString:#"https://outnight-mobile.azure-mobile.net/" applicationKey:#"okYeRGfBagYrsbkaqWIRObeDtktjkF10"];
self.table = [self.client tableWithName:#"notifications"];
self.rowitems = [[NSMutableArray alloc] init];
MSQuery *query = [self.table query];
query.fetchLimit = 3;
[query readWithCompletion:^(NSArray *items, NSInteger totalCount, NSError *error)
{
self.rowitems = [items mutableCopy];
// we have the notifications and the barID in ROWITEMS array
// so lets make this into a dictionary so we can query it
// we need to run this next block of code 3 times, for the 3 bar ids we have got in ROWITEMS
[self.MainTableView reloadData];
int a;
for (a = 0; a < 3; a++)
{
NSDictionary *apt = [self.rowitems objectAtIndex:a];
NSLog(#"%#", apt[#"barID"]);
NSDictionary *barIDDictionary = #{ #"myParam": apt[#"barID"]};
self.client = [MSClient clientWithApplicationURLString:#"https://outnight-mobile.azure-mobile.net/" applicationKey:#"okYeRGfBagYrsbkaqWIRObeDtktjkF10"];
[self.client invokeAPI:#"photos" body:barIDDictionary HTTPMethod:#"POST" parameters:nil headers:nil completion:^(id result, NSHTTPURLResponse *response, NSError *error) {
if (error) {
NSLog(#"Error %#", error );
}
else {
NSString *string = [NSString stringWithFormat:#"%#", [result objectForKey:#"rows"]];
NSString *stringWithoutbracketsend = [string stringByReplacingOccurrencesOfString:#")" withString:#""];
NSString *stringWithoutbracketsfront = [stringWithoutbracketsend stringByReplacingOccurrencesOfString:#"(" withString:#""];
NSString *completion = [stringWithoutbracketsfront stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSString *newStr = [completion substringFromIndex:1];
NSString *finalstring = [newStr substringToIndex:newStr.length-(newStr.length>0)];
[self.logoURL addObject:finalstring];
NSLog(#"%#",finalstring);
[ac stopAnimating];
[self.MainTableView reloadData];
self.MainTableView.hidden = NO;
}
}];
}
}];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 3;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"cell"];
NSDictionary *stress = [self.rowitems objectAtIndex:indexPath.row];
cell.textLabel.text = stress[#"content"];
// putting an image on a row
switch (indexPath.row) {
case 0:
[cell.imageView setImageWithURL:[NSURL URLWithString:[self.logoURL objectAtIndex:(0)]] placeholderImage:[UIImage imageNamed:#"greybox40.png"]];
break;
case 1:
[cell.imageView setImageWithURL:[NSURL URLWithString:[self.logoURL objectAtIndex:(1)]] placeholderImage:[UIImage imageNamed:#"greybox40.png"]];
break;
case 2:
[cell.imageView setImageWithURL:[NSURL URLWithString:[self.logoURL objectAtIndex:(2)]] placeholderImage:[UIImage imageNamed:#"greybox40.png"]];
break;
}
return cell;
}
#end

Answer 1

Looks like you need to call
[self.MainTableView reloadData];
self.MainTableView.hidden = NO;
inside Completion block

Answer 2

I think your Query is running asynchronously. All you need to do is to put your [tableView reloadData] in the block that runs after completion of the Query Block and make sure that you put the reloadData call inside a dispatch_async block.
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
// Background work
dispatch_async(dispatch_get_main_queue(), ^{
// Update UI
[tableView reloadData];
}); });

Answer 3

Did you implement UITableViewDatasource and UITableViewDelegate protocols?
Implement required methods of this 2 protocols and link your MainTableView.
Programmatically:
MainTableView.datasource = self;
MainTableView.delegate = self;
Via storyboard:
UPD:
Try this code:
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
NSDictionary *stress = [self.rowitems objectAtIndex:indexPath.row];
cell.textLabel.text = [stress objectForKey:#"content"];