Pagination in objective-c UITableViewController - ios

Question

I'm Trying to make pagination with this code.But When I scroll bottom its going 50-60 pages.
What I'm doing wrong.
NSInteger pagesNumber = 1;
- (void)api {
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":#"search_customer",#"page": [NSString stringWithFormat:#"%d",pagesNumber]};
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:#"tel"];
NSLog(#"%#",customer.tel);
[self.customerCards addObject:customer];
}
[self.tableView reloadData];
NSLog(#"GET: %#", string);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
}
And This is my scrollViewDidScroll method.
- (void)scrollViewDidScroll:(UIScrollView *)scrollView_ {
if(self.tableView.contentOffset.y >= (self.tableView.contentSize.height - self.tableView.bounds.size.height))
{
pagesNumber = pagesNumber + 1;
[self api];
}
}
So I what should I do in this section.And When I scroll Up data is missing.Its showing currentPageData.
Thanks

Answer 1

Declaration:
NSInteger pagesNumber = 1;
Call "api" method from viewDidLoad, to load data:
- (void)api {
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":#"search_customer",#"page": [NSString stringWithFormat:#"%d",pagesNumber]};
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:#"tel"];
NSLog(#"%#",customer.tel);
[self.customerCards addObject:customer];
}
[self.tableView reloadData];
NSLog(#"GET: %#", string);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
}
//instead of using scrollViewDidScroll better use willDisplayCell:
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
if(self.customerCards.count>1){
if(indexPath.row == self.customerCards.count-1){
pagesNumber=pagesNumber+1;
[self api];
}
}
}