对所有的webview添加userAgent

在appdelegate中- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法中加入下面代码

NSString *oldUserAgent = [[[UIWebView alloc] init] stringByEvaluatingJavaScriptFromString:@"navigator.userAgent"];
    NSLog(@"%@",oldUserAgent);
    NSString *customUserAgent =  [oldUserAgent stringByAppendingString:@"e-money"];;
    [[NSUserDefaults standardUserDefaults] registerDefaults:@{@"UserAgent":customUserAgent}];