Question

i am new in iOS
I want to call google api direction service, and parse it, i know how to call web service by using post method, but i don’t know how to integrate parameters into url, and get json response from that.
please help me.

Answer 1

Please see the below code, you will get some idea.

dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);
dispatch_async(queue, ^{
    NSString *stringOrigin = @"Surandai";
    NSString *stringDestination = @"Coimbatore";
    NSData *dataDirection = [NSData dataWithContentsOfURL:[NSURL URLWithString:[NSString stringWithFormat:@"https://maps.googleapis.com/maps/api/directions/json?origin=%@&destination=%@&sensor=true", stringOrigin, stringDestination]]];
    NSDictionary *dictionaryDirection = [NSJSONSerialization JSONObjectWithData:dataDirection options:NSJSONReadingAllowFragments error:nil];
    dispatch_sync(dispatch_get_main_queue(), ^{
        NSLog(@"dictionaryDirection - %@", dictionaryDirection);
        //Do UI update here
    });
});