Fetch json data UIViewController - ios

Question

I'm trying to fetch json data from UIViewcontroller in objective-c.But it's not change anything in view.
what should I do ?
- (void)api {
NSLog(#"test");
AFSecurityPolicy *securityPolicy = [[AFSecurityPolicy alloc] init];
[securityPolicy setAllowInvalidCertificates:YES];
NSString *urlPath = [NSString stringWithFormat:#"http://test.com/api/index.php"];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = #{#"process":#"musteri_detay",#"id": self.customerId,#"where":#""};
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:#"text/html"];
[manager setSecurityPolicy:securityPolicy];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
[manager POST:urlPath parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSString *string = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
NSError *error = nil;
NSData *jsonData = [string dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *dataDictionary = [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:&error];
self.customerCards = [NSMutableArray array];
NSArray *customersArray = [dataDictionary objectForKey:#"musteri_list"];
for (NSDictionary *customersDictionary in customersArray) {
ApiClass *customer = [ApiClass customersWithTitle:[customersDictionary objectForKey:#"adi"]];
customer.tel = [customersDictionary objectForKey:#"tel1"];
customer.grubu = [customersDictionary objectForKey:#"grubu"];
customer.adres = [customersDictionary objectForKey:#"adres"];
NSNumber *customerType = [customersDictionary objectForKey:#"kayit_tipi"];
/*
if (customerType == 1) {
customer.kayitTipi_string = #"Müşteri";
} else if (customerType == 2) {
customer.kayitTipi_string = #"Kişi";
} else if (customerType == 10) {
customer.kayitTipi_string = #"Bayi";
} else if (customerType == 20) {
customer.kayitTipi_string = #"Aday";
} else {
customer.kayitTipi_string = #"";
}
*/
[self.customerCards addObject:customer];
}
NSLog(#"Get data %#",dataDictionary);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
}
This is getDetails.
-(void) getDetails {
ApiClass *customers = [self.customerCards objectEnumerator];
//self.kayitTipi.text = customers.kayitTipi_string;
self.Adi.text = customers.adi;
self.faliyetAlani.text = customers.grubu;
}
And This is my viewDidLoad method.
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(#"ID: %#",self.customerId);
[self api];
[self getDetails];
// Do any additional setup after loading the view.
}
When I start the debuging its going api method.And [manager POST:urlPath parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
after this line its going the end of method.Then going to viewdidload again.And going to getdetails method.After turn back the api method.And fetching data.But its not changing anything.