UIWebView を使って BASIC認証のあるページにアクセスする

UIWebView+BacicAuth.m

// NOTE: 望んだように動かない……

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
  UIWebView* webView = [[[UIWebView alloc] initWithFrame:self.window.frame] autorelease];
  webView.delegate = self;
  NSString* url = @"http://example.com/authorization";
  [webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];
  [self.window addSubview:webView];
  [self.window makeKeyAndVisible];
  return YES;
}

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
  NSDictionary *headers = [request allHTTPHeaderFields];
  if(![[headers allKeys] containsObject:@"Authorization"]) {
    NSMutableURLRequest *newRequest = [request mutableCopy];
    [newRequest addValue:@"Basic ${USER:PASSWORD_BASE64}" 
      forHTTPHeaderField:@"Authorization"];
    [webView loadRequest:newRequest];
    [newRequest release];
    return NO;
  }
  return YES;
}

UIWebViewBacicAuth.m

// NOTE: 望んだように動かない……
// → https://github.com/oscardelben/UIWebViewBasicAuth/blob/master/NSMutableURLRequest+BasicAuth.m
// だとうまくいった

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
  UIWebView* webView = [[[UIWebView alloc] initWithFrame:self.window.frame] autorelease];
  webView.delegate = self;
  NSString* url = @"http://example.com/authorization";
  [webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];
  [self.window addSubview:webView];
  [self.window makeKeyAndVisible];
  return YES;
}

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
  NSDictionary *headers = [request allHTTPHeaderFields];
  if(![[headers allKeys] containsObject:@"Authorization"]) {
    NSMutableURLRequest *newRequest = [request mutableCopy];
    [newRequest addValue:@"Basic ${USER:PASSWORD_BASE64}" 
      forHTTPHeaderField:@"Authorization"];
    [webView loadRequest:newRequest];
    [newRequest release];
    return NO;
  }
  return YES;
}