So rufen Sie mehrere Ruhe-API nacheinander in Schleife

Question

Ich versuche, Daten vom Server lokal zu speichern, wenn erforderlich. Die Daten sind an verschiedenen Orten vorhanden. Ich möchte all diese Apis auf einen einzigen Refresh-Klick anrufen. Hilf mir, das zu lösen.

-(void) call:(NSString *)url{ 

      NSURLRequest *Request1 = [NSURLRequest requestWithURL :[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30.0]; 
      // calling only one api 
      NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:Request1 delegate:self startImmediately:YES]; 
      //   flag = true; 
      [SVProgressHUD showWithStatus:@"Wait while we fetch data .."]; 
      if (connection){ 
       NSLog(@"connection success"); 
      } 
      else{ 
       // handle error here 
      } 

} 

Answer 1

Try this,

**.h** 

    @property (nonatomic, strong) NSArray *arrURLs; 

**.m** 

- (void)viewDidLoad 
{ 
     [super viewDidLoad]; 

     self.arrURLs = [[NSArray alloc]initWithObjects:@"URL1",@"URL2",@"URL3", nil]; 
      NSTimer *timer; 

timer = [NSTimer scheduledTimerWithTimeInterval: 5 
             target: self 
             selector: @selector(fetchContent) 
             userInfo: nil 
             repeats: YES]; 

} 

-(void)fetchContent 
{ 
    [self fetchContentOnebyOne:0]; 
} 

- (void)fetchContentOnebyOne:(int)index 
    { 
    __block int cIndex = index; 


    if(index >= self.arrURLs.count) 
     return; 


NSString *strURL = [self.arrURLs objectAtIndex:index]; 

[self fetchfromServer:strURL withCompletion:^(BOOL isSuccessful) 
{ 
    if (isSuccessful) { 

     cIndex++; 

     [self fetchContentOnebyOne:cIndex]; 

    } 
    else 
    { 
     cIndex++; 
     [self fetchContentOnebyOne:cIndex]; 
    } 
    if (cIndex == self.arrURLs.count) { 
     NSLog(@"updated all content...."); 
    } 
}]; 
} 



- (void)fetchfromServer:(NSString*)strURL withCompletion:(void (^)(BOOL isSuccessful))completion 
{ 

NSURLRequest *Request1 = [NSURLRequest requestWithURL :[NSURL URLWithString:strURL] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30.0]; 
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:Request1 delegate:self startImmediately:YES]; 
//   flag = true; 
[SVProgressHUD showWithStatus:@"Wait while we fetch data .."]; 
if (connection){ 
    NSLog(@"connection success"); 
    completion(true); 
} 
else{ 
    // handle error here 
    completion(false); 
} 

}