所以我有一个使用Angular(NG 5.1.1 / Angular 7.x)的Nativescript应用
我有一个带网络视图的视图。
@ViewChild("myWebView") webViewRef: ElementRef;
<WebView class="webview" #myWebView [src]="myURL"></WebView>
在我的webview.component.ts内部,我有这个。
ngAfterViewInit(): void {
const webview: WebView = this.webViewRef.nativeElement;
webview.on(WebView.loadFinishedEvent, (args: LoadEventData) => {
this.setIndicatorFalse();
if (webview.ios) {
webview.ios.scrollView.delegate = UIScrollViewDelegateZ.new();
webview.ios.scrollView.minimumZoomScale = 1;
webview.ios.scrollView.maximumZoomScale = 1;
}
});
webview.on(WebView.loadStartedEvent, (args: LoadEventData) => {
if (webview.android) {
webview.android.getSettings().setBuiltInZoomControls(false);
webview.android.getSettings().setDisplayZoomControls(false);
} else {
// @ts-ignore
webview.ios.multipleTouchEnabled = false;
webview.ios.scalesPageToFit = false;
webview.ios.scrollView.bounces = false;
webview.ios.scrollView.showsHorizontalScrollIndicator = true;
webview.ios.scrollView.showsVerticalScrollIndicator = true;
webview.ios.opaque = false;
webview.ios.scrollView.allowsInlineMediaPlayback = true;
webview.ios.scrollView.mediaPlaybackRequiresUserAction = false;
}
});
}
如您所见,我已经尝试了各种方法来使该Webview不会缩放。
我正在使用覆盖我的ViewDelegate
webview.ios.scrollView.delegate = UIScrollViewDelegateZ.new();
那个文件在这里
export class UIScrollViewDelegateZ extends NSObject implements UIScrollViewDelegate {
public static ObjCProtocols = [UIScrollViewDelegate];
static new(): UIScrollViewDelegateZ {
console.log("here we are");
return <UIScrollViewDelegateZ>super.new();
}
viewForZoomingInScrollView(scrollView: UIScrollView): UIView {
console.log("viewForZoomingInScrollView");
return null;
}
scrollViewDidScroll(scrollView: UIScrollView): void {
console.log("scrollViewDidZoom");
return null;
}
scrollViewWillBeginZoomingWithView(scrollView: UIScrollView, view: UIView): void {
console.log("scrollViewWillBeginZoomingWithView " + scrollView);
return null;
}
}
当我加载Web视图并进行缩放时,控制台日志会显示以下内容:
CONSOLE LOG file:///app/app/webview/scrollDelegate.js:9:20: here we are
CONSOLE LOG file:///app/app/webview/scrollDelegate.js:21:20: scrollViewWillBeginZoomingWithView <WKScrollView: 0x7fb140afe000; baseClass = UIScrollView; frame = (0 0; 375 603); clipsToBounds = YES; gestureRecognizers = <NSArray: 0x600000ab2100>; layer = <CALayer: 0x600000537480>; contentOffset: {0, 0}; contentSize: {375, 1916}; adjustedContentInset: {0, 0, 0, 0}>
CONSOLE LOG file:///app/app/webview/scrollDelegate.js:17:20: scrollViewDidZoom
所以我觉得我已经接近了??但我无法继续前进?我以为是在尝试缩放时会返回null / undefined?这是其他一些SO答案/网络说要执行的操作,但无济于事。
HTML页面还具有正确的metatag标头...
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0, minimal-ui"/>
任何帮助将不胜感激!谢谢!
答案 0 :(得分:0)
您必须覆盖tns-core-modules设置的默认元数据。
import { WebView } from 'tns-core-modules/ui/web-view';
declare var WKUserScript, WKUserScriptInjectionTime, WKUserContentController, WKWebViewConfiguration, WKWebView, CGRectZero;
(<any>WebView.prototype).createNativeView = function () {
const jScript = `var meta = document.createElement('meta');
meta.setAttribute('name', 'viewport');
meta.setAttribute('content', 'initial-scale=1.0 maximum-scale=1.0');
document.getElementsByTagName('head')[0].appendChild(meta);`;
const wkUScript = WKUserScript.alloc().initWithSourceInjectionTimeForMainFrameOnly(jScript, WKUserScriptInjectionTime.AtDocumentEnd, true);
const wkUController = WKUserContentController.new();
wkUController.addUserScript(wkUScript);
const configuration = WKWebViewConfiguration.new();
configuration.userContentController = wkUController;
configuration.preferences.setValueForKey(
true,
"allowFileAccessFromFileURLs"
);
return new WKWebView({
frame: CGRectZero,
configuration: configuration
});
};
这里是Playground Sample,因为您使用的是Angular,因此可以将以上几行添加到app.component.ts