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2013-02-15T09:33:16.797
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For asynchronous fetch of HTML source code, I recommend you to use <a href="https://github.com/AFNetworking/" rel="nofollow">AFNetworking</a> 1) Then subclass AFHTTPCLient, for example: <pre><code>//WebClientHelper.h #import "AFHTTPClient.h" @interface WebClientHelper : AFHTTPClient{ } +(WebClientHelper *)sharedClient; @end //WebClientHelper.m #import "WebClientHelper.h" #import "AFHTTPRequestOperation.h" NSString *const gWebBaseURL = @"http://dummyBaseURL.com/"; @implementation WebClientHelper +(WebClientHelper *)sharedClient { static WebClientHelper * _sharedClient = nil; static dispatch_once_t oncePredicate; dispatch_once(&oncePredicate, ^{ _sharedClient = [[self alloc] initWithBaseURL:[NSURL URLWithString:gWebBaseURL]]; }); return _sharedClient; } - (id)initWithBaseURL:(NSURL *)url { self = [super initWithBaseURL:url]; if (!self) { return nil; } [self registerHTTPOperationClass:[AFHTTPRequestOperation class]]; return self; } @end </code></pre> 2) Request asynchronously HTML source code, put this code in any relevant part <pre><code>NSString *testNewsURL = @"http://whatever.com"; NSURL *url = [NSURL URLWithString:testNewsURL]; NSURLRequest *request = [NSURLRequest requestWithURL:url]; AFHTTPRequestOperation *operationHttp = [[WebClientHelper sharedClient] HTTPRequestOperationWithRequest:request success:^(AFHTTPRequestOperation *operation, id responseObject) { NSString *szResponse = [[[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding] autorelease]; NSLog(@"Response: %@", szResponse ); } failure:^(AFHTTPRequestOperation *operation, NSError *error) { NSLog(@"Operation Error: %@", error.localizedDescription); }]; [[WebClientHelper sharedClient] enqueueHTTPRequestOperation:operationHttp]; </code></pre>
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1. POObject-c/iOS :How to use ASynchronous to get a data from URL?
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