UIWebView 添加 UA 标识。

//get the original user-agent of 

webviewUIWebView*webView = [[UIWebViewalloc] initWithFrame:CGRectZero];

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

NSLog(@"old agent :%@", oldAgent);//add my info to the new agent

NSString*newAgent = [oldAgent stringByAppendingString:@"Bobo_Ma"];

NSLog(@"new agent :%@", newAgent);//regist the new agent

NSDictionary*dictionnary = [[NSDictionaryalloc] initWithObjectsAndKeys:newAgent,@"UserAgent",nil];

[[NSUserDefaultsstandardUserDefaults] registerDefaults:dictionnary];