ios - 加载 View 后隐藏 subview 图像(使用 Swift)

Question

技术:XCode6、iOS 8.2、Swift

当 View 加载时，我添加一张图片:

override func viewDidLoad() {
    super.viewDidLoad()
    webView.delegate = self
    self.navigationController?.toolbarHidden = false;
    openLoadingPopup()
    if browserHistory.count < 1 {
        backButton.enabled = false
    }
    let imageName = UIImage(named: "image.png")
    let imageview = UIImageView(image: imageName)
    imageview.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)
    self.view.addSubview(imageview)
}

我想删除这里的图像(如果可能的话)。最好的方法是什么？

 func webViewDidFinishLoad(webView: UIWebView) {
    UIApplication.sharedApplication()
        . networkActivityIndicatorVisible = false
    closeLoadingPopup()
    if cacheURL {
        ++browserHistoryIndex
        browserHistory.insert(webView.request!.URL, atIndex: browserHistoryIndex)
        backButton.enabled = browserHistoryIndex != 0
        //forwardButton.enabled = browserHistoryIndex != browserHistory.count - 1
    }
    if webView.request!.URL == lastURL {
        cacheURL = true
    }

}

Answer 1

使 imageView 成为属性而不是局部变量，并在 webViewDidFinishLoad 方法中使用 imageView.removeFromSuperview()。