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    <p>I use the TouchJSON library available here</p> <p><a href="https://github.com/TouchCode/TouchJSON" rel="nofollow">https://github.com/TouchCode/TouchJSON</a></p> <p>to do something alone the lines of:</p> <pre><code>// For the purpose of this example, use stringWithContentsOfURL NSString *googleURL = @"http://maps.googleapis.com/maps/api/distancematrix/json?origins=Vancouver+BC|Seattle&amp;destinations=San+Francisco|Victoria+BC&amp;mode=bicycling&amp;language=fr-FR&amp;sensor=false"; NSURL *url = [NSURL URLWithString:[googleURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSError *error = NULL; NSString *theJSONString = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:&amp;error]; NSLog(@"%@", theJSONString); // Parse with TouchJSON NSDictionary *replyDict = [NSDictionary dictionaryWithJSONString:theJSONString error:&amp;error]; NSString *distanceString = [[[[[[replyDict objectForKey:@"rows"] objectAtIndex:0] objectForKey:@"elements"] objectAtIndex:0] objectForKey:@"distance"] objectForKey:@"value"]; double distance = distanceString.doubleValue; NSLog(@"Distance: %f", distance); NSLog(@"Error: [%@]", error.description); </code></pre> <p>and that gives me the following output on the console:</p> <pre><code>{ "destination_addresses" : [ "San Francisco, Californie, États-Unis", "Victoria, BC, Canada" ], "origin_addresses" : [ "Vancouver, BC, Canada", "Seattle, État de Washington, États-Unis" ], "rows" : [ { "elements" : [ { "distance" : { "text" : "1 686 km", "value" : 1685690 }, "duration" : { "text" : "3 jours 21 heures", "value" : 336418 }, "status" : "OK" }, { "distance" : { "text" : "136 km", "value" : 136478 }, "duration" : { "text" : "6 heures 59 minutes", "value" : 25117 }, "status" : "OK" } ] }, { "elements" : [ { "distance" : { "text" : "1 426 km", "value" : 1426087 }, "duration" : { "text" : "3 jours 6 heures", "value" : 281311 }, "status" : "OK" }, { "distance" : { "text" : "251 km", "value" : 251174 }, "duration" : { "text" : "12 heures 6 minutes", "value" : 43583 }, "status" : "OK" } ] } ], "status" : "OK" } Distance: 1685690.000000 Error: [(null)] </code></pre> <p>If you want to use SBJson instead you can get it here</p> <p><a href="https://github.com/stig/json-framework" rel="nofollow">https://github.com/stig/json-framework</a></p> <p>replace the line</p> <pre><code>// Parse with TouchJSON NSDictionary *replyDict = [NSDictionary dictionaryWithJSONString:theJSONString error:&amp;error]; </code></pre> <p>with </p> <pre><code>// Parse with SBJson SBJsonParser *parser = [[SBJsonParser alloc] init]; NSDictionary *replyDict = [parser objectWithString:theJSONString]; </code></pre> <p>Remember to include the relevant library in your .h file</p>
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    1. POThe Google Distance Matrix APi (JSON PARSING)
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    1. COThis is a synchronous request which blocks your thread until the request is done. No UI response etc. Hes right at doing it asynchronously, which is so much better.
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    2. CO@Niels Castle... thanks for giving your valuable time . can i fetch the distance from theJSONSting by the help of SBJson.? thanks again
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    3. COJep, the example blocks and there is no error checking. The questions title is "JSON parsing" so I'm focusing on that.
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