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POMultiple Asynchronous HTTP Requests in Background iPhone
 

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  1. POMultiple Asynchronous HTTP Requests in Background iPhone
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    <p>I have an application that has many views (Using tab bar controller). I want to make concurrent asynchronous http requests, independently of the current view that the user is viewing. When an http request is responded , I want to update the User Interface, and then request again. If I write the code inside a UIViewController Subclass, everything works fine. Where can I write my code so as to work , without knowing which tab the user is viewing? I would like to avoid using threads. Is that possible?</p> <p>I have made a webservice that takes http requests and responds when it has something new. So, then i request for the new information and then i reopen the window for the webservice to talk me. That way I make a "persistent" connection. </p> <p>Finally i would like to know, what is the best way to inform my model for the changes that will be made to it. NSNotification? Delegation? </p> <p><strong>UPDATE</strong></p> <p>The code below DOES NOT receive any response. It receives BAD_ACCESS and it crashes.</p> <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; // Override point for customization after application launch. // Request Data ConnectionHandler *connectionHandler = [[ConnectionHandler alloc] init]; [connectionHandler requestSO]; [connectionHandler requestSopen]; // Make Root View Controller MainViewController *mainViewcontroller = [[MainViewController alloc] initWithNibName:@"MainViewController" bundle:nil]; [self.window setRootViewController:mainViewcontroller]; // self.window.backgroundColor = [UIColor whiteColor]; [self.window makeKeyAndVisible]; return YES; } </code></pre>
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    1. USGeorge Sachpatzidis
    1. USGeorge Sachpatzidis
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