javascript - swift - 通过单击 UIWebView 中的按钮打开 ViewController

Question

我有一个名为“test123”的 ViewController，并且有一个带有按钮的 UIWebView:

<button onclick='myFunction()'>Open test123</button>
</body>

<script>
    function myFunction()
    {
        presentViewController('test');

    }
    </script>

我试过this但我得到Use of undeclared type 'test123'

func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {

    if (navigationType == UIWebViewNavigationType.formSubmitted) {
        let VC = self.storyboard?.instantiateViewControllerWithIdentifier("test123") as? test123

        let navigationController = UINavigationController(rootViewController: VC!)
        self.navigationController?.presentViewController(navigationController, animated: true, completion:nil)


    }
    return true
}

那么我做错了什么？

Answer 1

您应该删除 as? test123 部分尝试将对象向下转换为显然不存在的 test123 类型。