UIWebView *webView=[[UIWebView alloc] init];

//修改useragent

? ?NSString *useragent = [webView stringByEvaluatingJavaScriptFromString:@"navigator.userAgent"];

? ?NSString *uaa = [useragent stringByAppendingString:@"iosclient"];//自定義需要拼接的字符串

? ?NSDictionary *dictionary = [NSDictionary dictionaryWithObjectsAndKeys:uaa, @"UserAgent",@"ww", nil];

? ?[[NSUserDefaults standardUserDefaults] registerDefaults:dictionary];

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

圖片發自簡書App