How to add pagination in UITableView.? [closed]

Answer 1

declare a global variable pagingCount and initialize it with 1 in viewdidload.

make this change in your data fetcher method.

NSURL *theURL = [NSURL URLWithString:@"http://qa.networc.in:1336/api/dispatcher/rideScheduled/:%d",pagingCount];

now you will pass this paging count & call your data fetcher method whenever the last cell is about to display. update the paging count with +1

- (void)tableView:(UITableView *)tableView willDisplayCell: (UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == [getid count] - 1 ) {
//call your method of fetching data with paging which will be increased with 1
//increase the pagingCount
pagingCount += 1;

//call your data fetcher
            }
         }

Answer 2

There are many way to achieve this like following way:

• First you need to create one global NSMutableArray that load in TableView Delegates and DataSaurce.
• Now on your api call you need to add That records in global Array.
• On last cell or the tableview you can call it again with next page URL based on your API and reload table on each Call
• You can use for loadMore many thirdParty library available on github:

https://github.com/OpenFibers/DragRefreshAndLoadMoreTableDemo

https://github.com/Abizern/PartialTable

https://github.com/robertmryan/UITableView-Bottom-Refresh

Based On your code:

in .h class

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
   NSURL* nextURL;
    int currentPage;

}

in .M Class

- (void)viewDidLoad {

    currentPage = 1;

    [self LoadData];
    [super viewDidLoad];

}


-(void)LoadData
{

    NSURL *theURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://qa.networc.in:1336/api/dispatcher/rideScheduled/:%d",currentPage]];
    NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:theURL      cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:20.0f];

    //Specify method of request(Get or Post)
    [theRequest setHTTPMethod:@"GET"];

    //Pass some default parameter(like content-type etc.)
    [theRequest setValue:@"application/json" forHTTPHeaderField:@"Accept"];
    [theRequest setValue:@"application/json; charset=UTF-8" forHTTPHeaderField:@"Content-Type"];

    [theRequest addValue:token forHTTPHeaderField:@"x-access-token"];
    NSURLResponse *theResponse = NULL;
    NSError *theError = NULL;

    NSData *responseData = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:&theResponse error:&theError];
    if (responseData == nil)
    {
        return;
    }

    NSDictionary *dataDictionaryResponse = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:&theError];
    NSLog(@"url to send request= %@",theURL);
    NSLog(@"%@",dataDictionaryResponse);



    NSURLSession *session = [NSURLSession sharedSession];

    NSURLSessionDataTask *task = [session dataTaskWithRequest:theRequest
                                            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);
                                      }


                                      currentPage ++;
                                      dictionary = [[NSJSONSerialization JSONObjectWithData:data options:0 error:nil]objectForKey:@"data"];

                                      NSArray *total =  [dictionary objectForKey:@"total"];
                                      NSLog(@"latlop %@", total);


                                      [getid addObjectsFromArray:total];

                                       [self updateTable];

                                  }];

    [task resume];
}

Answer 3

I was done same using following code

#pragma mark --- UIScrollView Delegate Method ---

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
    float offset = (scrollView.contentOffset.y - (scrollView.contentSize.height - scrollView.frame.size.height));
    btnloadMore.hidden = YES;

    if (offset >= 0 && offset <= 105)
    {
        if(isLoadMoreCheck == TRUE)
        {
            NSLog(@"Hi");
            //btnloadMore.hidden = NO;
            [self addMoreData];
        }
    }

    NSLog(@"Scroll : %f",offset);
}

- (void)addMoreData
{
    isLoadMoreCheck = FALSE;
    isLoadMore = TRUE;
    currentPage++;
    [self getNewsFeeds:currentPage];// Here you can call your method for load next page data
}