WKWebView相当于UIWebView的scalesPageToFit [英] WKWebView equivalent for UIWebView's scalesPageToFit

问题描述

我正在更新我的iOS应用，用 WKWebView 替换 UIWebView 。但是我不明白如何用 WKWebView 实现相同的行为。使用 UIWebView 我使用 scalesPageToFit 来确保显示的网页大小与屏幕大小相同（以便在没有滚动的情况下显示全屏。）

I am updating my iOS app to replace UIWebView with WKWebView. However I don't understand how to achieve the same behavior with WKWebView. With UIWebView I used scalesPageToFit to ensure the web pag was displayed with the same size as the screen size (so as to appear full screen without scrolling).

我在网上找到了解决方案，但它不起作用：

I found that solution on the web however it does not work :

- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation {
NSString *javascript = @"var meta = document.createElement('meta');meta.setAttribute('name', 'viewport');meta.setAttribute('content', 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no');document.getElementsByTagName('head')[0].appendChild(meta);";
[webView evaluateJavaScript:javascript completionHandler:nil];
}

推荐答案

你也可以试试WKUserScript 。

you can also try the WKUserScript.

这是我的工作配置：

NSString *jScript = @"var meta = document.createElement('meta'); meta.setAttribute('name', 'viewport'); meta.setAttribute('content', 'width=device-width'); document.getElementsByTagName('head')[0].appendChild(meta);";

WKUserScript *wkUScript = [[WKUserScript alloc] initWithSource:jScript injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];
WKUserContentController *wkUController = [[WKUserContentController alloc] init];
[wkUController addUserScript:wkUScript];

WKWebViewConfiguration *wkWebConfig = [[WKWebViewConfiguration alloc] init];
wkWebConfig.userContentController = wkUController;

wkWebV = [[WKWebView alloc] initWithFrame:self.view.frame configuration:wkWebConfig];

您可以为WKWebViewConfiguration添加其他配置。

you can add additional configuration to your WKWebViewConfiguration.

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