iOS REST XML in iphone development

[Sergio10]

Hi,

How to implement REST XML?

What does it mean in general? As I understand application sends request as http. And receives XML as respons.
Correct?

Thank you

 

[aikhan]

to call some GET REST Service

- (void)getPickUpLinesFromWebService{
	[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:TRUE];
	NSString *URLstr = GET_PICKUP_LINES_URL;
	
	NSURL *theURL = [NSURL URLWithString:URLstr];
	NSURLRequest *theRequest = [NSURLRequest requestWithURL:theURL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10.0];
	
	NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
	
	if(theConnection){
		responseData = [[NSMutableData data] retain];
	}
	else{
		[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:FALSE];
	}

}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
	[responseData appendData:data];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection{
	[self parsePickUpLines:responseData];
	[connection release];
	[responseData release];
}

- (void)parsePickUpLines:(NSData *)pickUpLinesXMLData{
	if(pickUpLinesParser)
		[pickUpLinesParser release];
	pickUpLinesParser = [[NSXMLParser alloc] initWithData:pickUpLinesXMLData];
	[pickUpLinesParser setDelegate:self];
	[pickUpLinesParser setShouldResolveExternalEntities:NO];
	[pickUpLinesParser parse];
}

And the you implement NSXMLParser delegate Methods

For POST REST Service

- (void)SomeServiceMethod
{
	NSData *thumbsupData = [[NSString stringWithFormat:
								 @"<rootElement> \
								<element> \
								<line_id>%@</line_id> \
								<thumbsup>%@</thumbsup> \
								</element> \
								 </rootElement>",  line_id]
								dataUsingEncoding: NSASCIIStringEncoding];
	

	
	NSString *URLstr = SOME_URL;
	NSURL *theURL = [NSURL URLWithString:URLstr];
	
	NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:theURL];
	
	[theRequest setHTTPMethod:@"POST"];
	[theRequest setValue:@"text/xml"forHTTPHeaderField:@"Content-type"];
	[theRequest setHTTPBody:thumbsupData];
	
	[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:TRUE];
	
	NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
	if(!theConnection){
		NSLog(@"Error, Invalid Request");
		
	}
}

Its pretty easy just follow the code youll understand