Pull to refresh functionality isn't working - ios

Question

I've put the code below in, and it looks close but I can't figure out why it's not doing the actual refresh. It has the "Pull to refresh" and the updated text displaying properly, but it's not updating the actual data. Am I missing something obvious, or do I have it misplaced or something?
I edited to add the self tableview call to reload the data. Still no luck.
FINAL EDIT___User below solved it with calling the data feed.
- (void)viewDidLoad
{
[super viewDidLoad];
UIRefreshControl *refresh = [[UIRefreshControl alloc] init];
refresh.attributedTitle = [[NSAttributedString alloc] initWithString:#"Pull to refresh"];
[refresh addTarget:self action:#selector(refreshmytable:) forControlEvents:UIControlEventValueChanged];
self.refreshControl = refresh;
NSURLSessionConfiguration *config =
[NSURLSessionConfiguration defaultSessionConfiguration];
_session = [NSURLSession sessionWithConfiguration:config
delegate:self
// delegate:nil
delegateQueue:nil];
[self fetchFeed];
}
- (void)refreshmytable:(UIRefreshControl *)refreshControl{
[self fetchFeed]; //Added 12:12 9.16.14
refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:#"Updating"];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"MMM d, h:mm a"];
NSString *updated = [NSString stringWithFormat:#" Last Update: %#", [formatter stringFromDate:[NSDate date]]];
refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:updated];
[refreshControl endRefreshing];
[self.tableView reloadData]; //Added this 11:32 9.16.14
}
- (void)fetchFeed
{
NSString *userEID = MAP_getUsername();
//NSLog(userEID);
NSString *requestString1 = [#"URL" stringByAppendingString:userEID];
NSString *requestString2 = #"&status=pending";
NSString *requestString = [requestString1 stringByAppendingString:requestString2];
//NSLog(requestString);
/*NSString *requestString = #"http://URL";
*/
NSURL *url = [NSURL URLWithString:requestString];
NSURLRequest *req = [NSURLRequest requestWithURL:url];
NSURLSessionDataTask *dataTask =
[self.session dataTaskWithRequest:req
completionHandler:
^(NSData *data, NSURLResponse *response, NSError *error) {
NSDictionary *jsonObject = [NSJSONSerialization JSONObjectWithData:data
options:0
error:nil];
self.changeList = jsonObject[#"List"];
//self.changeList=nil; //tried to add here to remove duplicate data
NSLog(#"%#", self.changeList);
//- add code here to populate BNRItemStore with the change order list.
// - following code should be rewritten in fetchFeed that will load BNRItemStore.
if (self.changeList.count>0) {
for (int i = 0; i < self.changeList.count; i++) {
NSDictionary *coItem = self.changeList[i];
[[BNRItemStore sharedStore]
addItemWithApproverEid:coItem[#"approverEid"]
assignmentGroup:coItem[#"assignmentGroup"]
changeOrder:coItem[#"changeOrder"]
subcategory:coItem[#"subCatagory"]
title:coItem[#"title"]
];
}
}
//NSLog(#"sizeof(NSInteger) = %#", #(sizeof(NSInteger)));
//- end comment
dispatch_async(dispatch_get_main_queue(), ^{
[self.tableView reloadData];
});
//self.changeList=nil; //trying to null out list for refresh non duplicate data
// NSString *json = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
// NSLog(#"%#", json);
}];
[dataTask resume];
}

Answer 1

You are not fetching the new data. You have a method/message call fetchFeed that you call in the viewDidLoad but you never call it in the refresh method/message. I assume that if you refresh, then you need to fetch new data. Call `[self fetchFeed];' before reloading the table view. If you are fetch the data asynchronously, then you need to have the table view reload in the completion block when fetching the new data is complete.

Answer 2

You need to call to reloadData somewhere in refreshmytable method for the table view to update the data
- (void)refreshmytable:(UIRefreshControl *)refreshControl{
refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:#"Updating"];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"MMM d, h:mm a"];
NSString *updated = [NSString stringWithFormat:#" Last Update: %#", [formatter stringFromDate:[NSDate date]]];
refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:updated];
[refreshControl endRefreshing];
[self.tableView reloadData]
}