在尚未显示的UIViewController上预加载UIWebView [英] PreLoad UIWebView on a not yet displayed UIViewController

问题描述

我有一个应用程序，在最后一个UIViewController上有一个UIWebView ...用户浏览应用程序，最后他们可以通过UIWebView转换（模态）到最终的UIViewController ...在它的viewDidLoad我有UIWebView加载页面。

I have an app where on the very last UIViewController there is a UIWebView... the user navigates through the app and at the very end they can transition (modal) to the final UIViewController with a UIWebView... in it's viewDidLoad I have the UIWebView load the page.

问题是加载此页面大约需要8秒钟，这会让用户感到烦恼。

The problem is it takes about 8 seconds to load this page and that annoys users.

如果UIViewController还没有出现，我怎么能提前加载UIWebView方式（比如应用程序首次启动时！）

How can I load the UIWebView way ahead of time (like when the app is first launched!) if that UIViewController hasn't even been presented yet?

推荐答案

我在UIPageViewController中遇到了同样的UIWebView问题，我发现了一个更好的解决方案。

I had your same problem for UIWebView inside a UIPageViewController and I found a better solution.

如果你在 FirstViewController 并且你的 SecondViewController 中有你的webView把 loadHTMLString 或<你的 SecondViewController 的 viewDidLoad 中的code> loadRequest 方法并调用 [secondViewController .view layoutSubviews] 用于开始加载 FirstViewController 。

If you are in FirstViewController and you have your webView in your SecondViewController put the loadHTMLString or loadRequest method in the viewDidLoad of your SecondViewController and call [secondViewController.view layoutSubviews] for start loading in your FirstViewController.

Ex：

FirstViewController

-(void)viewDidLoad{
    [super viewDidLoad];
    // _secondViewController -> An instance of SecondVieController
    [_secondViewController.view layoutSubviews];
}

SecondViewController

-(void)viewDidLoad{
    [super viewDidLoad];
    NSURL *url =[NSURL URLWithString:@"http://www.google.it"];
    NSURLRequest *request =[NSURLRequest requestWithURL:url];
    [self.webView loadRequest:request];
}

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