Get php website response in Objective-C

Question

I have a php website that returns YES or NO upon request. For example

www.test.com/test.php?variable=test1 will return me YES and www.test.com/test.php?variable=test2 will return me NO

I am trying to get this response into an Objective-C application I am creating but I have no luck up to now. Here is my code

NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.test.com/test.php?variable=test1"]
                                          cachePolicy:NSURLRequestUseProtocolCachePolicy
                                      timeoutInterval:60.0];
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if (theConnection) {
    NSMutableData *receivedData = [NSMutableData data];
    NSString *strData = [[NSString alloc]initWithData:receivedData encoding:NSUTF8StringEncoding];
    NSLog(@"This is the response: %@", strData);
}else {
 }

Can anybody help me on that? is there any other way to do it? Am I doing something wrong?

Thanks a lot guys

When you say that you "have no luck up to now", what is happening? Crash, "This is the response: " never prints? Do you have the delegate set up to receive the data as it comes in? — gaige
– gaige, Commented Mar 10, 2012 at 22:12

ilhan çetin · Accepted Answer · 2012-03-10 22:21:15Z

2

     - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
        {
            [receivedData appendData:data];
        // declre receivedData as a property of the class(in xxx.m)
            NSError *error=nil;
            NSDictionary *result=[NSJSONSerialization JSONObjectWithData:data options:
                                  NSJSONReadingMutableContainers error:&error];
            NSLog("%@", result);
    //do whatever you want...

           //the result dictionary is a JSON object and you can use it as KVC(key-value-coding) rules  
 }

If your app targets iOS 5 just use this code to your xxx.m file under the method you create the request. And if you want to use it in some other versions of iOS, Take a look JSON parser frameworks..

answered Mar 10, 2012 at 22:21

ilhan çetin

3835 silver badges19 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

user1015777 Over a year ago

can you please elaborate on that? Because I am trying to use it but I get a lot of errors

ilhan çetin Over a year ago

in your... .h file declare a property for receivedData and sysnthesyze it in .m.. And your receivedData is nsmutabledata, declare it as nsmutabledictionary(or just nes dictionary).

Mundi · Accepted Answer · 2012-03-10 22:21:02Z

It seems you are setting up your connection correctly. However, you then have to catch the data in the NSURLConnection Delegate methods documented in the NSURLConnection.h file:

@protocol NSURLConnectionDataDelegate <NSURLConnectionDelegate>
@optional
- (NSURLRequest *)connection:(NSURLConnection *)connection willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response;
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response;

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data;

- (NSInputStream *)connection:(NSURLConnection *)connection needNewBodyStream:(NSURLRequest *)request;
- (void)connection:(NSURLConnection *)connection   didSendBodyData:(NSInteger)bytesWritten
                                                 totalBytesWritten:(NSInteger)totalBytesWritten
                                         totalBytesExpectedToWrite:(NSInteger)totalBytesExpectedToWrite;

- (NSCachedURLResponse *)connection:(NSURLConnection *)connection willCacheResponse:(NSCachedURLResponse *)cachedResponse;

- (void)connectionDidFinishLoading:(NSURLConnection *)connection;
@end

Of particular interest are didReceiveData and connectionDidFinishLoading.

Collectives™ on Stack Overflow

Get php website response in Objective-C

2 Answers 2

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related