NSMutable Array problems - ios

Question

All,
I have an issue with my NSMutable array LogoURL. when the UITable reloads it only shows at array location [0] and not at [1] or [2]. Here is my code, can someone look at see where I am going wrong. Its very minor problem but its driving me crazy!
#import "ViewController.h"
#interface ViewController ()
#property (nonatomic, strong) MSTable *table;
#property (nonatomic, strong) NSMutableArray *items;
#property (weak, nonatomic) IBOutlet UITableView *MainTableView;
#end
#implementation ViewController
- (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.logoURL = [[NSMutableArray alloc] init];
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];
//[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];
[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 [self.rowitems count];
}
-(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"];
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
It is erroring at CASE (1), cos it cannot see the object. any help would be brilliant, thanks.

Answer 1

Error at case (1) happens because you reload your table view 3 times. and every time you say to your tableView that it has 3 rows via numberOfRowsInSection: method. But in first and second iteration your self.logoURL has only 1 and then 2 objects. try this code:
if (self.logoURL.count > indexPath.row) {
[cell.imageView setImageWithURL:[NSURL URLWithString:self.logoURL[indexPath.row]] placeholderImage:[UIImage imageNamed:#"greybox40.png"]];
}
else
cell.imageView.image = nil;
also, you dont need to create NSMutableArray instance self.rowitems = [[NSMutableArray alloc] init]; because you then reassign self.rowitems property self.rowitems = [items mutableCopy];

Answer 2

because your for loop is override the array value and store last value only.
[array insertObject:finalString atIndex:i];
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.logoURL count];
}