UIWebView 役に立ちそうなメソッド集 #iOS

タイトルの取得

NSString *title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];

ソースの取得

NSString *source = [self stringByEvaluatingJavaScriptFromString:@"document.getElementsByTagName('html')[0].innerHTML"];

/* Body内のみ */
// NSString *source = [self stringByEvaluatingJavaScriptFromString:@"document.body.innerHTML"];

表示をクリア

[webView loadHTMLString:@"<html><head></head><body></body></html>" baseURL:nil];

Cookieの削除

NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie  *cookie in [storage cookies]) {
    [storage deleteCookie:cookie];
}

Cacheの削除

NSURLCache *cache = [NSURLCache sharedURLCache];
[cache removeAllCachedResponses];

XMLのエスケープ

NSMutableString+XMLEscape.m

- (NSMutableString *)xmlSimpleUnescape
{
    [self replaceOccurrencesOfString:@"&amp;"  withString:@"&"  options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"&quot;" withString:@"\"" options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"&#x27;" withString:@"'"  options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"&#x39;" withString:@"'"  options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"&#x92;" withString:@"'"  options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"&#x96;" withString:@"'"  options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"&gt;"   withString:@">"  options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"&lt;"   withString:@"<"  options:NSLiteralSearch range:NSMakeRange(0, [self length])];

    return self;
}

- (NSMutableString *)xmlSimpleEscape
{
    [self replaceOccurrencesOfString:@"&"  withString:@"&amp;"  options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"\"" withString:@"&quot;" options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"'"  withString:@"&#x27;" options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@">"  withString:@"&gt;"   options:NSLiteralSearch range:NSMakeRange(0, [self length])];
    [self replaceOccurrencesOfString:@"<"  withString:@"&lt;"   options:NSLiteralSearch range:NSMakeRange(0, [self length])];

    return self;
}

URLのエスケープ

NSString+URLEscape.m

- (NSString*)escapedUrlString
{
    return (NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(
                                                               NULL,
                                                               (CFStringRef)self,
                                                               NULL,
                                                               (CFStringRef)@"!*'();:@&=+$,/?%#[]._-",
                                                               kCFStringEncodingUTF8 ));
}

- (NSString*)decodedUrlString
{
    return (NSString *) CFBridgingRelease(CFURLCreateStringByReplacingPercentEscapesUsingEncoding(
                                                                                                  NULL,
                                                                                                  (CFStringRef)self,
                                                                                                  CFSTR(""),
                                                                                                  kCFStringEncodingUTF8));
}