[22548] | 1 | // create the request
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| 2 |
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| 3 | NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.apple.com/"]
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| 4 |
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| 5 | cachePolicy:NSURLRequestUseProtocolCachePolicy
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| 6 |
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| 7 | timeoutInterval:60.0];
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| 8 |
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| 9 | // create the connection with the request
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| 10 |
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| 11 | // and start loading the data
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| 12 |
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| 13 | NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
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| 14 |
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| 15 | if (theConnection) {
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| 16 |
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| 17 | // Create the NSMutableData that will hold
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| 18 |
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| 19 | // the received data
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| 20 |
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| 21 | // receivedData is declared as a method instance elsewhere
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| 22 |
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| 23 | receivedData=[[NSMutableData data] retain];
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| 24 |
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| 25 | } else {
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| 26 |
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| 27 | // inform the user that the download could not be made
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| 28 |
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| 29 | }
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| 30 |
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| 31 | - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
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| 32 |
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| 33 | {
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| 34 |
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| 35 | // this method is called when the server has determined that it
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| 36 |
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| 37 | // has enough information to create the NSURLResponse
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| 38 |
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| 39 |
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| 40 |
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| 41 | // it can be called multiple times, for example in the case of a
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| 42 |
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| 43 | // redirect, so each time we reset the data.
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| 44 |
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| 45 | // receivedData is declared as a method instance elsewhere
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| 46 |
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| 47 | [receivedData setLength:0];
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| 48 |
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| 49 | }
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| 50 |
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| 51 | - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
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| 52 |
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| 53 | {
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| 54 |
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| 55 | // append the new data to the receivedData
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| 56 |
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| 57 | // receivedData is declared as a method instance elsewhere
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| 58 |
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| 59 | [receivedData appendData:data];
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| 60 |
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| 61 | }
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| 62 |
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| 63 | - (void)connection:(NSURLConnection *)connection
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| 64 |
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| 65 | didFailWithError:(NSError *)error
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| 66 |
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| 67 | {
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| 68 |
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| 69 | // release the connection, and the data object
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| 70 |
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| 71 | [connection release];
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| 72 |
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| 73 | // receivedData is declared as a method instance elsewhere
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| 74 |
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| 75 | [receivedData release];
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| 76 |
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| 77 |
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| 78 |
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| 79 | // inform the user
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| 80 |
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| 81 | NSLog(@"Connection failed! Error - %@ %@",
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| 82 |
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| 83 | [error localizedDescription],
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| 84 |
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| 85 | [[error userInfo] objectForKey:NSErrorFailingURLStringKey]);
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| 86 |
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| 87 | }
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| 88 |
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| 89 | - (void)connectionDidFinishLoading:(NSURLConnection *)connection
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| 90 |
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| 91 | {
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| 92 |
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| 93 | // do something with the data
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| 94 |
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| 95 | // receivedData is declared as a method instance elsewhere
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| 96 |
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| 97 | NSLog(@"Succeeded! Received %d bytes of data",[receivedData length]);
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| 98 |
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| 99 |
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| 100 |
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| 101 | // release the connection, and the data object
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| 102 |
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| 103 | [connection release];
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| 104 |
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| 105 | [receivedData release];
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| 106 |
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| 107 | }
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