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POHow to call url on button click in iphone
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  1. POHow to call url on button click in iphone
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    copied!<p>I am passing a URL when the user clicks on a button with this method, but my application crashes and I don't know what am I doing wrong.</p> <p>I've written this code (the one that handles the connection) in another Controller which is being called from the button event in the first view. </p> <p>In particular, this line of code:</p> <pre><code>NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:url]cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0]; </code></pre> <p>Produces the following error:</p> <blockquote> <p>/Users/pradeepyadav/Desktop/RegexKitLiteDemo/Classes/SearchView.m:19:0 /Users/pradeepyadav/Desktop/RegexKitLiteDemo/Classes/SearchView.m:19: warning: incompatible Objective-C types 'struct NSURL *', expected 'struct NSString *' when passing argument 1 of 'URLWithString:' from distinct Objective-C type</p> </blockquote> <p>Here's the full code: </p> <pre><code>- (void)LoadAirport { NSString *urlString = [NSString stringWithFormat:@"http://www.bookryanair.com/SkySales/FRSearch.aspx?AvailabilitySearchInputFRSearchView%24ButtonSubmit=Search%20For%20Flights%20&amp;AvailabilitySearchInputFRSearchView%24DropDownListMarketDay1=&lt;%i&gt;&amp;AvailabilitySearchInputFRSearchView%24DropDownListMarketDay2=&lt;%i&gt;&amp;AvailabilitySearchInputFRSearchView%24DropDownListMarketDestination1=&lt;%@&gt;&amp;AvailabilitySearchInputFRSearchView%24DropDownListMarketMonth1=&lt;%i&gt;&amp;AvailabilitySearchInputFRSearchView%24DropDownListMarketMonth2=&lt;%i&gt;&amp;AvailabilitySearchInputFRSearchView%24DropDownListMarketOrigin1=&lt;%@&gt;&amp;AvailabilitySearchInputFRSearchView%24DropDownListPassengerType_ADT=1&amp;AvailabilitySearchInputFRSearchView%24DropDownListPassengerType_CHD=0&amp;AvailabilitySearchInputFRSearchView%24DropDownListPassengerType_INFANT=0&amp;AvailabilitySearchInputFRSearchView%24RadioButtonFlowSelector=FlightAndCar&amp;AvailabilitySearchInputFRSearchView%24RadioButtonMarketStructure=RoundTrip&amp;AvailabilitySearchInputFRSearchView%24discountPax=0&amp;__EVENTARGUMENT=&amp;__EVENTTARGET=&amp;__VIEWSTATE=%2FwEPDwUBMGRkg4UKvNNb1NbM14%2F2n9zUxhNQ%2B%2BA%3D&amp;errorlist=",day,day1,DestinCode,fromDate1,fromDate2,OriginCode]; NSURL *url = [NSURL URLWithString:urlString]; NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:url]cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0]; NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self]; if (theConnection) { webData = [[NSMutableData data] retain]; NSLog(@"%@",webData); } else { } } - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { //responseData = [[NSMutableData alloc] init]; [webData setLength: 0]; } - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { //[responseData appendData:data]; [webData appendData:data]; } - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { [connection release]; [webData release]; NSLog(@"Connection failed! Error - %@ %@", [error localizedDescription], [[error userInfo] objectForKey:NSURLErrorFailingURLStringErrorKey]); //[textView setString:@"Unable to fetch data"]; } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { loginStatus = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding]; [connection release]; } </code></pre>
 

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