How to send a Get request in iOS?

Question

I am making a library to get response from a particular URL with specified data and method type. For this, I am making a request with url. But when I set its method type, it shows an exception of unrecognized selector send in [NSURLRequest setHTTPMethod:] I am setting it as

[requestObject setHTTPMethod:@"GET"];

Tell me what could be the problem. Also provide me the code if you have.

Make sure your requestObject is of type NSMutableURLRequest. — Imran Raheem, Jun 02 '11 at 09:09
@Imran Raheem: You should post this as an answer, because that is the solution. — DarkDust, Jun 02 '11 at 09:15

score 82 · Accepted Answer · edited Jul 25 '15 at 22:29

82

NSMutableURLRequest *request = 
[NSMutableURLRequest requestWithURL:[NSURL 
            URLWithString:serverAddress] 
            cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData
                                                   timeoutInterval:10
 ];

[request setHTTPMethod: @"GET"];

NSError *requestError = nil;
NSURLResponse *urlResponse = nil;


NSData *response1 =
        [NSURLConnection sendSynchronousRequest:request
                         returningResponse:&urlResponse error:&requestError];

edited Jul 25 '15 at 22:29

CuriousGeorge

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answered Jun 02 '11 at 09:19

Mobile Developer iOS Android

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How do you process the NSData response? – SleepsOnNewspapers Jan 27 '15 at 01:03

score 12 · Answer 2 · answered Jun 02 '11 at 09:41

12

NSString *getString = [NSString stringWithFormat:@"parameter=%@",yourvalue];
NSData *getData = [getString dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

NSString *getLength = [NSString stringWithFormat:@"%d", [getData length]];

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];

[request setURL:[NSURL URLWithString:@"https:yoururl"]];

[request setHTTPMethod:@"GET"];

[request setValue:postLength forHTTPHeaderField:@"Content-Length"];

[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];

[request setHTTPBody:getData];

self.urlConnection = [[[NSURLConnection alloc] initWithRequest:request delegate:self] autorelease];

NSAssert(self.urlConnection != nil, @"Failure to create URL connection.");

// show in the status bar that network activity is starting
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;

answered Jun 02 '11 at 09:41

Adarsh V C

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1

@simpleBob Didn't work for me either... I got it working fine for POST, but not GET. Then I checked the doco for `setHTTPBody:` which states for the data parameter "The new request body for the receiver. This is sent as the message body of the request, as in an HTTP POST request." – Steph Sharp May 22 '13 at 01:56
@StephSharp I use something like this, maybe it helps you: `NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:WS_URL]]; [request setHTTPMethod:@"GET"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];` – Daniel May 22 '13 at 14:22
The URL should just be the URL with parameters. Something like `http://my.URL.com/test?param1=1&param2=2` – Daniel May 22 '13 at 14:26
@simpleBob Thanks for the code, that's nearly exactly what I ended up doing! – Steph Sharp May 23 '13 at 05:57
Typo: `[request setValue:postLength...` should be `[request setValue:getLength...` – clozach Jul 24 '13 at 18:03

score 2 · Answer 3 · edited Dec 14 '16 at 21:55

Simply call and use:

(void)jsonFetch{

    NSURL *url = [NSURL URLWithString:@"http://itunes.apple.com/us/rss/topaudiobooks/limit=10/json"];

    NSURLSession *session = [NSURLSession sharedSession];

    NSURLSessionDataTask *data = [session dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {

        NSError *erro = nil;

        if (data!=nil) {

            NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&erro ];

            if (json.count > 0) {

                for(int i = 0; i<10 ; i++){

                    [arr addObject:[[[json[@"feed"][@"entry"] objectAtIndex:i]valueForKeyPath:@"im:image"] objectAtIndex:0][@"label"]];

                }

            }
        }
        dispatch_sync(dispatch_get_main_queue(),^{

            [table reloadData];
        });
    }];

    [data resume];
}

score 2 · Answer 4 · answered Jun 02 '11 at 09:16

2

Make sure your requestObject is of type NSMutableURLRequest.

answered Jun 02 '11 at 09:16

Imran Raheem

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How to send a Get request in iOS?

4 Answers4

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