Load More Table View in ios - ios

Question

i want to load a data when user scroll a table view from web services. my web services contain three page but i get only one page JSON data. My code for this like as
in .h file
#property(strong,nonatomic)IBOutlet UITableView *table;
#property(strong,nonatomic)NSArray *imagesa;
#property(strong,nonatomic)IBOutlet UIActivityIndicatorView *spinner;
and in .m file first define two macro queue with url
#define kBgQueue dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0)
#define imgURL [NSURL URLWithString:#"http://www.truemanindiamagazine.com/webservice/news.php"]
and then view like as
- (void)viewDidLoad
{
[super viewDidLoad];
dispatch_async(kBgQueue, ^{
jdata = [NSData dataWithContentsOfURL: imgURL];
[self performSelectorOnMainThread:#selector(fetchedData:) withObject:jdata waitUntilDone:YES];
});
self.table.pagingEnabled=YES;
[self.table reloadData];
-(void)fetchedData:(NSData *)responsedata
{
NSError* error;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:responsedata options:kNilOptions error:&error];
self.imagesa=[json objectForKey:#"data"];
if (self.imagesa.count)
{
dispatch_async(dispatch_get_main_queue(), ^{
[self.table reloadData];
});
}
NSLog(#"images,%#",self.imagesa);
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return self.imagesa.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellidentifier=#"Cell";
CustumCell *cell=[tableView dequeueReusableCellWithIdentifier:cellidentifier];
if (cell == nil)
{
NSArray *nib=[[NSBundle mainBundle]loadNibNamed:#"CustumCell" owner:self options:nil];
cell=[nib objectAtIndex:0];
}
NSDictionary *dict = [self.imagesa objectAtIndex:indexPath.row];
NSString *img2=[dict valueForKey:#"post_image"];
[cell.photoimage sd_setImageWithURL:[NSURL URLWithString:[img2 stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]] placeholderImage:[UIImage imageNamed:#"Hisoka.jpg"] options:SDWebImageProgressiveDownload completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(#"downloaded");
});
}];
NSString *name=[dict valueForKey:#"post_title"];
cell.namelabel.text=name;
NSString *des=[dict valueForKey:#"post_content"];
cell.deslabel.text=des;
NSDateFormatter * dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:#"yyyy-MM-dd hh:mm:ss"];
NSString *date=[dict valueForKey:#"post_date"];
NSDate * dateNotFormatted = [dateFormatter dateFromString:date];
[dateFormatter setDateFormat:#"d-MMM-YYYY"];
NSString * dateFormatted = [dateFormatter stringFromDate:dateNotFormatted];
NSLog(#"Date %#",dateFormatted);
cell.datelabel.text=dateFormatted;
[self.spinner stopAnimating];
self.spinner.hidesWhenStopped=YES;
if (indexPath.row == [self.imagesa count] - 1)
{
[self.table reloadData];
}
return cell;
}
how i get paging in table view and load more data in to table view like as in android load more list view.

Answer 1

you have to call service again with increase pagenumber. i dont see any pagenumber parameter you are passing to get data. maybe if your service contain 3 pages then your service must have pagenumber parameter so you can get data as per page.
-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
CGFloat offsetY = scrollView.contentOffset.y;
CGFloat contentHeight = scrollView.contentSize.height;
if (offsetY > contentHeight - scrollView.frame.size.height)
{
// when your table is at last cell then increase your pagenumber and call service again and send increased pagenumber.
pageNum = pageNum + 1;
[self getData];
}
}
-(void)getData
{
dispatch_async(kBgQueue, ^{
jdata = [NSData dataWithContentsOfURL: imgURL];
[self performSelectorOnMainThread:#selector(fetchedData:) withObject:jdata waitUntilDone:YES];
});
}
Maybe this will help you.