UIRefreshControl Почему я не могу получить данные из моего webApi

Question

- (void)viewDidLoad 
{ 

[super viewDidLoad]; 
Name = @"Name"; 
thumbnail = @"Thumbnail"; 
titlename = @"TitleName"; 
stw = @"stw"; 
shopname = @"shopname"; 
telno = @"telno"; 
adress = @"adress"; 
hour = @"hour"; 
textview = @"textview"; 

myObject = [[NSMutableArray alloc] init]; 

NSData *jsonSource = [NSData dataWithContentsOfURL: 
         [NSURL URLWithString:@"http://yy33k.net78.net/json.php"]]; 

id jsonObjects = [NSJSONSerialization JSONObjectWithData: 
        jsonSource options:NSJSONReadingMutableContainers error:nil]; 

for (NSDictionary *dataDict in jsonObjects) { 
    NSString *Name_data = [dataDict objectForKey:@"Name"]; 
    NSString *thumbnail_data = [dataDict objectForKey:@"Thumbnail"]; 
    NSString *stw_data = [dataDict objectForKey:@"stw"]; 
    NSString *titlename_data = [dataDict objectForKey:@"TitleName"]; 
    NSString *shopname_data = [dataDict objectForKey:@"shopname"]; 
    NSString *hour_data = [dataDict objectForKey:@"hour"]; 
    NSString *adress_data = [dataDict objectForKey:@"adress"]; 
    NSString *telno_data = [dataDict objectForKey:@"telno"]; 
    NSString *textview_data = [dataDict objectForKey:@"textview"]; 



    NSLog(@"Name: %@",Name_data); 
    NSLog(@"THUMBNAIL: %@",thumbnail_data); 
     NSLog(@"AUTHOR: %@",stw_data); 
    NSLog(@"titlename: %@",titlename_data); 

    dictionary = [NSDictionary dictionaryWithObjectsAndKeys: 
        Name_data, Name, 
        thumbnail_data, thumbnail, 
        stw_data,stw, 
        titlename_data, titlename, 
        hour_data, hour, 
        shopname_data, shopname, 
        telno_data, telno, 
        adress_data, adress, 
        textview_data, textview, 
        nil]; 
    [myObject addObject:dictionary]; 
}// Do any additional setup after loading the view, typically from a nib. 




[self addRefreshViewController]; 

} 


-(void)addRefreshViewController{ 


self.refreshControl = [[UIRefreshControl alloc] init]; 
self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:@"下拉刷新"]; 
[self.refreshControl addTarget:self action:@selector(RefreshViewControlEventValueChanged) 
     forControlEvents:UIControlEventValueChanged]; 
} 

-(void)RefreshViewControlEventValueChanged 

{ 

if (self.refreshControl.refreshing) { 

    NSLog(@"refreshing"); 

    self.refreshControl.attributedTitle = [[NSAttributedString alloc]initWithString:@"刷新中"]; 



    [self performSelector:@selector(loadData) withObject:nil afterDelay:0.3]; 

} 

} 


-(void)loadData{ 


[self.refreshControl endRefreshing]; 
self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:@"下拉刷新"]; 


[self.tableView reloadData]; 
} 

Answer 1

Вот реализация вашего метода refreshControlValueChanged:. Вы также можете повторно использовать метод loadJSON в viewDidLoad.

- (void)refreshControlValueChanged:(UIRefreshControl *)control { 

    if (control.refreshing) { 
     [self loadJSON]; 
    } 
} 

- (void)loadJSON { 

    NSURL *jsonURL = [NSURL URLWithString:@"YOUR JSON SOURCE URL STRING HERE"]; 
    NSURLRequest *request = [NSURLRequest requestWithURL:jsonURL]; 

    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { 

     if (!connectionError) { 

      NSError *jsonParsingError; 

      id obj = [NSJSONSerialization JSONObjectWithData:data options:0 error:&jsonParsingError]; 

      if (!jsonParsingError) { 

       // Checking for the type of the top level container we received 
       if ([obj isKindOfClass:[NSDictionary class]]) { 

        // Got a dictionary, continue processing the data... 
        NSDictionary *myDict = (NSDictionary *)obj; 

       } 

       // After you've done with processing the received data, you can update the UI here... 

       [self.tableView reloadData]; 
      } 
      else { 

       // Could not parse the JSON, probably malformed JSON/wrong data was downloaded, handle it! 
      } 
     } 
     else { 

      // Got an error while downloading JSON, handle it! 
     } 

     [self.refreshControl endRefreshing]; 
    }]; 
}