使用 SBJson ：

NSDictionary *partialJsonDict = [[[yourIncomingJsonAsAString JSONValue] objectForKey:@"results"]] objectAtIndex:0];
NSDictionary *geometryDict = [partialJsonDict objectForKey:@"geometry"];
Float32 latitude = [[[geometryDict objectForKey:@"location"] objectForKey:@"lat"] floatValue];
Float32 latitude = [[[geometryDict objectForKey:@"location"] objectForKey:@"lng"] floatValue];

是的，真的很简单！ ;）

Yes, it really is just that easy! ;)