NSURLConnection Sample

getnote.m

//
//  SNViewController.m
//  SimpleNetwork
//
//  Created by Bryan Barnard on 11/11/12.
//  Copyright (c) 2012 Bryan Barnard. All rights reserved.
//

#import "SNViewController.h"

@interface SNViewController ()
@end

@implementation SNViewController
@synthesize responseData;

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSLog(@"viewdidload");
    [self fetchNotes];
}

- (void)fetchNotes {
    self.responseData = [NSMutableData data];
    
    NSURL *briteredNotes = [NSURL URLWithString:@"http://britrednotes.azurewebsites.net/api/notes?pageIndex=1&pageSize=10"];
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:briteredNotes];
    
    /* add custom header */
    [request addValue:@"0ca532cc-1918-475e-ae30-a4a3ac25625c" forHTTPHeaderField:@"AuthorId"];
    
   connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    NSLog(@"didReceiveResponse");
    
    NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
    int code = [httpResponse statusCode];
    NSLog(@"HTTP Response Status Code: %d", code);    
    [self.responseData setLength:0];
}

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

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
    NSLog(@"didFailWithError");
    //NSLog([NSString stringWithFormat:@"Connection failed: %@", [error description]]);
}

/* this is the meat */
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    NSLog(@"connectionDidFinishLoading");
    NSLog(@"Succeeded! Received %d bytes of data", [self.responseData length]);

    //​=​ ​[​[​N​S​S​t​r​i​n​g​ ​a​l​l​o​c​]​ ​i​n​i​t​W​i​t​h​D​a​t​a​:​ self.responseData​ e​n​c​o​d​i​n​g​:​N​S​U​T​F​8​S​t​r​i​n​g​E​n​c​o​d​i​n​g​]​;
    NSString *t = [[NSString alloc] initWithData:self.responseData encoding:NSUTF8StringEncoding];
    NSLog(@"jsonCheck: %@", t);
    
    // convert to JSON
    NSError *myError = nil;
    NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData:self.responseData options:NSJSONReadingMutableContainers error:&myError];
    
    if (!jsonArray) {
        NSLog(@"error parsing json response");
    } else {
        for(NSDictionary *item in jsonArray) {
            NSLog(@"Item: %@", item);
        }
    }
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end