Follow the steps below: -
1) Visit: -
http://allseeing-i.com/ASIHTTPRequest/Setup-instructions
Go to this link and download classes which are as told.
2) Read this code for easy understanding:-
//
// demoViewController.m
// SendAsynchronousRequest
//
// Created by Ashish on 8/17/13.
// Copyright (c) 2013 ashish. All rights reserved.
//
#import "demoViewController.h"
#import "ASIHTTPRequest.h"
#import "ASIHTTPRequestDelegate.h"
#import "ASINetworkQueue.h"
#import "ASIFormDataRequest.h"
@interface demoViewController ()
@end
@implementation demoViewController
NSMutableString *getData;
NSMutableString *getData1;
NSMutableString *getData2;
//XML Parser
//---xml parsing---
NSXMLParser *xmlParser;
NSMutableString *soapResults;
BOOL elementFound;
int flag;
NSMutableData *webData;
@synthesize activity,MainCatId;
-(void)connectionString
{
[activity startAnimating];
NSURL *url=[NSURL URLWithString:@""];
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
[request setDelegate:self];
[request setRequestMethod:@"POST"];
[request addRequestHeader:@"Content-Type" value:@"text/xml"];
[request addRequestHeader:@"SOAPAction" value:@"http://tempuri.org/Search"];
NSString *soapString=[NSString stringWithFormat:
@"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
]";
NSLog(@"%@",soapString);
NSString *msgLength =[NSString stringWithFormat:@"%d", [soapString length]];
[request addRequestHeader:@"Content-Length" value:msgLength];
[request appendPostData:[soapString dataUsingEncoding:NSUTF8StringEncoding]];
[request setDelegate:self];
[request setDidFinishSelector:@selector(requestDone:)];
[request setDidFailSelector:@selector(requestWentWrong:)];
[request startAsynchronous];
if (request)
{
webData = [NSMutableData data];
//NSLog(@"response= %@",responseData);
}
}
-(void)parseUser:(NSString *)xml{
NSData* data=[xml dataUsingEncoding:NSUTF8StringEncoding];
xmlParser = [[NSXMLParser alloc] initWithData:data];
[xmlParser setDelegate:self];
[xmlParser setShouldProcessNamespaces:NO];
[xmlParser setShouldReportNamespacePrefixes:NO];
[xmlParser setShouldResolveExternalEntities:NO];
[xmlParser parse];
}
# pragma mark View Connection Functionalities
-(void) connection:(NSURLConnection *) connection
didReceiveResponse:(NSURLResponse *) response {
[webData setLength: 0];
// NSLog(@"didReceiveResponse");
}
-(void) connection:(NSURLConnection *) connection
didReceiveData:(NSData *) data {
[webData appendData:data];
//NSLog(@"didReceiveData");
}
-(void) parser:(NSXMLParser *) parser
didStartElement:(NSString *) elementName
namespaceURI:(NSString *) namespaceURI
qualifiedName:(NSString *) qName
attributes:(NSDictionary *) attributeDict {
// CurrentElement = [elementName copy];
// NSUserDefaults *userdefaults=[NSUserDefaults standardUserDefaults];
NSLog(@"Element name %@%@",elementName,soapResults);
if( [elementName isEqualToString:@"NewDataSet"]) //enter the tag you want to start
{
if (!soapResults)
{
soapResults = [[NSMutableString alloc] init];
}
elementFound = true;
}
}
-(void)parser:(NSXMLParser *) parser foundCharacters:(NSString *)string
{
if(elementFound)
{
soapResults = (NSMutableString *) [string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSLog(@"soap results %@",soapResults);
}
}
-(void)parser:(NSXMLParser *)parser
didEndElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI
qualifiedName:(NSString *)qName
{
if([elementName isEqualToString:@""])
{
[arr1 addObject:soapResults];
}
if([elementName isEqualToString:@""])
{
[arr2 addObject:soapResults];
}
if([elementName isEqualToString:@""])
{
[arr3 addObject:soapResults];
}
}
- (void)requestDone:(ASIHTTPRequest *)request{
NSString *response = [request responseString];
NSLog(@"%@",response);
[self parseUser:response];
[activity stopAnimating];
activity.hidden=TRUE;
}
- (void)requestWentWrong:(ASIHTTPRequest *)request
{
NSError *error = [request error];
NSLog(@"%@",error);
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self connectionString];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
