nsurlconnection

问题 I am developing one small app in which i have multiple NSURLConnection.I have created that NSURL Connection but i don't know how to handle it.My code is like below. -(void) loadTrafficAndEvent { int a=10; //Get the map view bounds for fetch the travel time markers from web service MKCoordinateRegion region = mapView.region; float print = region.center.latitude; // NSLog(@"region.center=%g",print); CGPoint firstcorner = CGPointMake(self.mapView.bounds.origin.x , mapView.bounds.origin.y);

问题 After reading APNS documentation, I have implemented apns into my app. Everything works fine, but I have a question. I don't know if it is possible, but I would like to do a task when my app is in background and I receive a apns notification. This is my dictionary inside the notification: aps = { alert = "message"; sound = "default"; }; If my app is in foreground, I execute this code: - (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo {

问题 I'm fairly new to consuming webservices using SSL channel. After fairly good search I had found a way to perform SSL/HTTPS authentication using NSURLConnection delegate APIs. Following is the code snippet that does the actual authentication thing: - (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge { [self printLogToConsole:@"Authenticating...."]; [self printLogToConsole:[NSString stringWithFormat:@"\n%@\n",

问题 I need to implement video streaming service with http protocol. I know how to set url into MPMoviePlayerController, and how to set headerField into NSMutableURLRequest, but I have no idea how to combine them. I implement like below code, but not working, and I assume because there is no file info in the binary data. - (void) openUrl { NSMutableURLRequest *reqURL = [NSMutableURLRequest requestWithURL: [NSURL URLWithString:@"http://111.222.33.44/MOV/2013/4/123123123"] cachePolicy

问题 I want to make http form post using NSURLConnection in iOS. I have two form fields and one file upload option in an HTML form. When I am doing same thing using NSURLConnection I am not getting a response. NSString *urlString = @"http://url/test.php"; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; [request setURL:[NSURL URLWithString:urlString]]; [request setHTTPMethod:@"POST"]; NSString *contentType = [NSString stringWithFormat:@"multipart/form-data"]; [request addValue

问题 I was looking at the NSURLConnection class which could be used to establish a sync or async connection to an URL and then retrieve its data... a lot of changes have been made to this class with IOS 5 and I've seen they introduced some formal protocols related to authentication or download, but I don't see, for example, if the connection:didReceiveResponse: message (that was previously sent to the delegate and that it is no more available) is still available in some protocols.. How do you

问题 I am using the code below to check for an internet connection. It was working correctly but after the Swift 2.0 update I now see an error on the line var data = NSURLConnection.sendSynchronousRequest(request, returningResponse: &response, error: nil) as NSData? saying extra argument 'error' in call. class func isConnectedToNetwork()->Bool{ var Status:Bool = false let url = NSURL(string: "http://google.com/") let request = NSMutableURLRequest(URL: url!) request.HTTPMethod = "HEAD" request

问题 I have multiple views which make the same NSURLRequest/NSURLConnection request . Ideally, in order to get some code reuse, I'd like to have some sort of a "proxy" which does all the underlying work of creating/executing the (asynchronous) request/connection, setting up all the delegate methods, etc., so I don't have to copy all those NSURLConnection delegate method handlers in each view. First of all, is this design approach reasonable? Second, how would I go about doing something like that?

问题 I'm using NSURLConnection in an iPhone application and the interface seems to slow down after sending initWithRequest: to my NSURLConnection instance. I'm not sure if this is occurring because my processing code is taking a long time to handle the response, or if it's because NSURLConnection is blocking the main thread. Can anyone confirm that NSURLConnection will create the connection and wait for data on a separate thread, and then call its delegate methods on the main thread? Thanks! 回答1:

问题 I want to download a file with a NSURLRequest and save it but in the line with the NSData * data = ... happens an error. NSURL *Urlstring = [NSURL URLWithString:@"http://yourdomain.com/yourfile.pdf"]; NSURLRequest *request = [NSURLRequest requestWithURL: Urlstring]; NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; NSURL *documentsURL = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];