Obj-C UITable not populating with MutableArray - ios

Question

I have an array that loads when the app starts and it gets the correct data and fills the array but once I go to the tableviewcontroller it says the array is null.
This is where I get the data
AppDelegate.h
#interface AppDelegate : UIResponder <UIApplicationDelegate>
{
NSMutableArray *tableDicsArrayTickets;
NSMutableArray *dictionaryStack;
NSMutableString *textInProgress;
NSError *errorPointer;
}
#property (strong, nonatomic) NSMutableArray *tableDicsArrayTickets;
#property (strong, nonatomic) UIWindow *window;
#property (strong, nonatomic) NSString *photo_URL;
+(NSDictionary *)dictionaryForXMLData:(NSData *)data error:(NSError **)errorPointer;
+(NSDictionary *)dictionaryForXMLString:(NSString *)string error:(NSError **)errorPointer;
+(AppDelegate *) getInstance;
AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
self.tableDicsArrayTickets = [[NSMutableArray alloc] init];
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration:defaultConfigObject delegate:nil delegateQueue:[NSOperationQueue mainQueue]];
NSURL *url = [NSURL URLWithString:#"http://MYURLexample.php"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
NSString *deviceCode = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
NSString *post = [[NSString alloc] initWithFormat:#"parameter=%#", deviceCode];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[post dataUsingEncoding:NSUTF8StringEncoding]];
NSURLSessionDataTask *dataTask = [defaultSession dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
NSLog(#"Response:%# %#\n", response, error);
if(error == nil)
{
NSString *text =[[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
NSLog(#"Data = %#",text);
NSDictionary *dics = [[NSDictionary alloc]initWithDictionary:[AppDelegate dictionaryForXMLString:text error:nil]];
NSLog(#"dics is %#", dics);
[self.tableDicsArrayTickets addObject:[[dics valueForKey:#"response"] valueForKey:#"text"]];
NSLog(#"Array2 is %#", self.tableDicsArrayTickets);
}
}];
[dataTask resume];
ViewController.h
#interface HistoryViewController : UIViewController<UITableViewDataSource, UITableViewDelegate>
{
AppDelegate *mainDelegate;
}
#property (strong, nonatomic) AppDelegate *mainDelegate;
ViewController.m
#pragma
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [mainDelegate.tableDicsArrayTickets count];
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 60;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSMutableArray *array = mainDelegate.tableDicsArrayTickets;
NSString *cellIdentifier = #"Cell";
PhotoTableViewCell *cell = (PhotoTableViewCell *) [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if(cell == nil)
{
cell = [[PhotoTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
NSLog(#"Array is %#", [[array objectAtIndex:indexPath.row] objectForKey:#"text"]);
cell.ticketNumber.text = [[array objectAtIndex:indexPath.row] objectForKey:#"text"];
return cell;
}
Im not having a problem getting the data for the array its just once I finally go to the view controller with the table on it the array becomes null.

Answer 1

I think you're doing a number of things wrong...
First:
// AppDelegate.h
#interface AppDelegate : UIResponder <UIApplicationDelegate>
{
// this should NOT be here
NSMutableArray *tableDicsArrayTickets;
NSMutableArray *dictionaryStack;
NSMutableString *textInProgress;
NSError *errorPointer;
}
#property (strong, nonatomic) NSMutableArray *tableDicsArrayTickets;
// ...
That should give you a compile warning:
autosynthesized property 'tableDicsArrayTickets' will use synthesized instance
variable '_tableDicsArrayTickets', not existing instance variable 'tableDicsArrayTickets'
Same with:
//HistoryViewController.h
#interface HistoryViewController : UIViewController<UITableViewDataSource, UITableViewDelegate>
{
// this should NOT be here
AppDelegate *mainDelegate;
}
#property (strong, nonatomic) AppDelegate *mainDelegate;
Which should give you:
autosynthesized property 'mainDelegate' will use synthesized instance
variable '_mainDelegate', not existing instance variable 'mainDelegate'
Then, you're not showing where you have this in HistoryViewController.m (should probably be in viewDidLoad()):
_mainDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];