nativescript admob插件错误

我将nativescript admob插件添加到我的nativescript Angular项目中，并在我注入组件的服务中包含以下代码：

import { Injectable } from "@angular/core";
import * as Admob from "nativescript-admob";

@Injectable()
export class AdmobService {

  private androidBannerId = "ca-app-pub-3940256099942544/6300978111";
  private iosBannerId = "";

  public createBanner() {
    Admob.createBanner({
      testing: false,
      size: Admob.AD_SIZE.SMART_BANNER,
      // iosBannerId: this.iosBannerId,
      androidBannerId: this.androidBannerId,
      // iosTestDeviceIds: ["yourTestDeviceUDIDs"],
      margins: {
        bottom: 500
      }
    }).then(function() {
      console.log("admob createBanner done test");
    }, function(error) {
      console.log("admob createBanner error: " + error);
    });
  }

  public hideBanner() {
    Admob.hideBanner().then(function() {
      console.log("admob hideBanner done");
    }, function(error) {
      console.log("admob hideBanner error: " + error);
    });
  }
}

import { Component } from "@angular/core";
import { Page } from "tns-core-modules/ui/page";
import { AdmobService } from "~/service/admob.service";

@Component({
  selector: "Start",
  moduleId: module.id,
  templateUrl: "./start.component.html",
  styleUrls: ["./start.component.scss"]
})
export class StartComponent {

  constructor(private page: Page, private admob: AdmobService) {
    this.page.on("loaded", () => {
      this.admob.createBanner();
    });
  }

}

下面是我如何在组件中使用它：

import { Injectable } from "@angular/core";
import * as Admob from "nativescript-admob";

@Injectable()
export class AdmobService {

  private androidBannerId = "ca-app-pub-3940256099942544/6300978111";
  private iosBannerId = "";

  public createBanner() {
    Admob.createBanner({
      testing: false,
      size: Admob.AD_SIZE.SMART_BANNER,
      // iosBannerId: this.iosBannerId,
      androidBannerId: this.androidBannerId,
      // iosTestDeviceIds: ["yourTestDeviceUDIDs"],
      margins: {
        bottom: 500
      }
    }).then(function() {
      console.log("admob createBanner done test");
    }, function(error) {
      console.log("admob createBanner error: " + error);
    });
  }

  public hideBanner() {
    Admob.hideBanner().then(function() {
      console.log("admob hideBanner done");
    }, function(error) {
      console.log("admob hideBanner error: " + error);
    });
  }
}

import { Component } from "@angular/core";
import { Page } from "tns-core-modules/ui/page";
import { AdmobService } from "~/service/admob.service";

@Component({
  selector: "Start",
  moduleId: module.id,
  templateUrl: "./start.component.html",
  styleUrls: ["./start.component.scss"]
})
export class StartComponent {

  constructor(private page: Page, private admob: AdmobService) {
    this.page.on("loaded", () => {
      this.admob.createBanner();
    });
  }

}

当我在页面加载后启动AdMob横幅时，没有显示任何广告横幅，我正在使用AdMob提供的android测试横幅ID，我在控制台中得到以下输出，这看起来像是一个错误：

chromium: [INFO:library_loader_hooks.cc(36)] Chromium logging enabled: level = 0, default verbosity = 0
07-21 14:17:56.082 22107 22107 I cr_BrowserStartup: Initializing chromium process, singleProcess=false
07-21 14:17:56.174 22107 22107 I zygote  :   at void com.android.webview.chromium.WebViewChromium.init(java.util.Map, boolean) (PG:53)
07-21 14:17:56.175 22107 22107 I zygote  :   at void com.android.webview.chromium.WebViewChromium.init(java.util.Map, boolean) (PG:53)
07-21 14:17:56.176 22107 22107 I zygote  :   at void com.android.webview.chromium.WebViewChromium.init(java.util.Map, boolean) (PG:53)
07-21 14:17:56.176 22107 22107 I zygote  :   at void com.android.webview.chromium.WebViewChromium.init(java.util.Map, boolean) (PG:53)
07-21 14:17:56.177 22107 22107 I zygote  :   at void com.android.webview.chromium.WebViewChromium.init(java.util.Map, boolean) (PG:53)
07-21 14:17:56.178 22107 22107 I zygote  :   at void com.android.webview.chromium.WebViewChromium.init(java.util.Map, boolean) (PG:53)

---

我需要做什么才能让AdMob横幅正常工作？

这实际上是AdMob插件的一个奇怪错误。因此，当您第一次导航到应用程序中的某个页面时，加载的事件被触发，但广告从未出现。当你第二次导航到它时，广告确实会出现。为了解决这个问题，我还向navigatedTo事件添加了banner初始化函数

this.page.on("navigatedTo", () => {
  this.admob.createBanner();
});

这解决了这个问题，这样横幅在第一次出现时以及之后每次导航到页面时都会出现