Web组件点击tel:类型超链接后白屏，未唤起拨打电话

import web_webview from ‘@ohos.web.webview’; 
import call from ‘@ohos.telephony.call’; 
import { BusinessError } from ‘@ohos.base’; 
 
@Entry 
@Component 
struct WebComponent { 
webviewController: web_webview.WebviewController = new web_webview.WebviewController(); 
 
build() { 
Column() { 
Web({ src: $rawfile(‘call.html’), controller: this.webviewController}) 
.onLoadIntercept((event) => { 
if (event) { 
let url: string = event.data.getRequestUrl(); 
// 判断链接是否为拨号链接 
if (url.indexOf(‘tel://’) === 0) { 
call.makeCall(url.substring(6),(err: BusinessError) => { 
if (!err) { 
console.log(“make call success.”); 
} else { 
console.log(“make call fail, err is:” + JSON.stringify(err)); 
} 
}); 
return true; 
} 
} 
return false; 
}) 
} 
} 
}