InAppBrowser事件处理程序无法触发：Ionic 5 + Angular 10 +电容器

如何解决InAppBrowser事件处理程序无法触发：Ionic 5 + Angular 10 +电容器

我在Ionic的CLI产生的blank Angular + Capacitor入门项目中添加了以下代码（在home.page.ts内）：

  openInAppbrowser() {
    const exampleUrl = 'https://ionicframework.com/docs/components';
    const options: InAppbrowserOptions = {
      usewkwebview: 'yes'
    };
    const browser = this.iab.create(exampleUrl,'_blank',options);
    const eventTypes: InAppbrowserEventType[] = ['loadstart','loadstop','beforeload','exit','loaderror'];
    eventTypes.forEach(eventType => {
      browser.on(eventType).subscribe(event => {
        console.log(`Event ${eventType} fired!`); // Doesn't get here
        console.log(`URL: [${event.url}]`);       // or here (obvIoUsly).
        if (event.url && event.url.includes('path-i-am-interested-in')) {
          // Do useful stuff...
        }
      });
    });
    console.log(`browser object after subscription:`);
    console.log(browser);
  }

当我将其部署到iPhone 11模拟器或通过XCode绑定到我的iPhone 11时，console.log调用都不会在侦听器中触发。

我使用此代码构建了一个Ionic-Vue项目，并且工作正常。为什么这不适用于Angular？

以下是具有完整实现的精简存储库：
https://bitbucket.org/aaronw322/ionic-inappbrowser-subscription/src/master/

自述文件概述了我安装/构建它的步骤。

以下是打开InAppbrowser示例站点，单击链接，然后按InAppbrowser窗口底角的Done之后，来自XCode控制台的日志（注意，没有显示所需的日志输出）：>

To Native Cordova ->  InAppbrowser open InAppbrowser694511092 ["options": [https://ionicframework.com/docs/components,_blank,usewkwebview=yes]]
2020-11-07 09:26:23.859892-0500 App[22260:325714] WF: _userSettingsForUser : (null)
2020-11-07 09:26:23.860064-0500 App[22260:325714] WF: _WebFilterIsActive returning: NO
⚡️  [log] - browser object after subscription:
⚡️  [log] - {"_objectInstance":{"channels":{"beforeload":{"type":"beforeload","handlers":{},"state":0,"fireArgs":null,"numHandlers":1,"onHasSubscribersChange":null},"loadstart":{"type":"loadstart","loadstop":{"type":"loadstop","loaderror":{"type":"loaderror","exit":{"type":"exit","customscheme":{"type":"customscheme","numHandlers":0,"message":{"type":"message","onHasSubscribersChange":null}}}}
⚡️  [log] - onscript loading complete
⚡️  WebView loaded
2020-11-07 09:26:24.078843-0500 App[22260:325714] No
2020-11-07 09:26:24.090239-0500 App[22260:325714] didStartProvisionalNavigation
⚡️  [log] - Angular is running in development mode. Call enableProdMode() to enable production mode.
⚡️  [log] - Ionic Native: deviceready event fired after 91 ms
⚡️  [warn] - Native: tried calling StatusBar.styleDefault,but the StatusBar plugin is not installed.
⚡️  [warn] - Install the StatusBar plugin: 'ionic cordova plugin add cordova-plugin-statusbar'
⚡️  [warn] - Native: tried calling SplashScreen.hide,but the SplashScreen plugin is not installed.
⚡️  [warn] - Install the SplashScreen plugin: 'ionic cordova plugin add cordova-plugin-splashscreen'
2020-11-07 09:26:24.427205-0500 App[22260:325714] Unbalanced calls to begin/end appearance transitions for <UIViewController: 0x7fa6c450df80>.
⚡️  To Native ->  App addListener 86862752
2020-11-07 09:41:26.240739-0500 App[22260:325714] [assertion] Error acquiring assertion: <Error Domain=RBSAssertionErrorDomain Code=3 "Target is not running or required target entitlement is missing" UserInfo={RBSAssertionAttribute=<RBSDomainAttribute| domain:"com.apple.webkit" name:"Background" sourceEnvironment:"(null)">,NSLocalizedFailureReason=Target is not running or required target entitlement is missing}>
2020-11-07 09:41:26.240903-0500 App[22260:325714] [ProcessSuspension] 0x10cc0ff00 - ProcessAssertion: Failed to acquire RBS Background assertion 'WebProcess Background Assertion' for process with PID 22267,error: Error Domain=RBSAssertionErrorDomain Code=3 "Target is not running or required target entitlement is missing" UserInfo={RBSAssertionAttribute=<RBSDomainAttribute| domain:"com.apple.webkit" name:"Background" sourceEnvironment:"(null)">,NSLocalizedFailureReason=Target is not running or required target entitlement is missing}