Apps crashes when downloading from Google PlayStore (works fine on computer, emulator and psychical device)

[Fearcoder]

I have an app tested on my phone and emulators and this is working fine. When I upload the app to the google playstore and download it from their the app crash instantly. I have a log file from the Pre-launch report:

Exception java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.ViewGroup.addView(android.view.View)' on a null object reference
  at com.getcapacitor.community.admob.banner.BannerExecutor.lambda$createNewAdView$4 (BannerExecutor.java)
  at com.getcapacitor.community.admob.banner.BannerExecutor.$r8$lambda$SRErdRYNdwgeYcdHD6kfXLEFvHY (BannerExecutor.java)
  at com.getcapacitor.community.admob.banner.BannerExecutor$$InternalSyntheticLambda$3$24b47d65758d39384fe06c20a9cb1f6bdbad8c0af55ff1611fe89e660be5c42c$0.run (BannerExecutor.java)
  at android.os.Handler.handleCallback (Handler.java:938)
  at android.os.Handler.dispatchMessage (Handler.java:99)
  at android.os.Looper.loopOnce (Looper.java:201)
  at android.os.Looper.loop (Looper.java:288)
  at android.app.ActivityThread.main (ActivityThread.java:7839)
  at java.lang.reflect.Method.invoke (Method.java)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:548)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1003)

I saw this issue and I got the same problem:

https://github.com/capacitor-community/admob/issues/57

I initialize the plugin like this (demo code)

import { Component } from '@angular/core';
import { AdMob } from '@capacitor-community/admob';
import { Platform } from '@ionic/angular';

@Component({
  selector: 'app-root',
  templateUrl: 'app.component.html',
  styleUrls: ['app.component.scss'],
})
export class AppComponent {

  constructor(private platform: Platform,) {  

    this.initializeApp();

  }

  initializeApp() {
    this.platform.ready().then(() => {
      /**
       * initialize() require after platform.ready();
       */
      AdMob.initialize({
        requestTrackingAuthorization: true,
        testingDevices: ['2077ef9a63d2b398840261c8221a0c9b'],
        initializeForTesting: true,
      });
    });
  }
}

This is my admob service.ts:

import { Injectable } from '@angular/core';
import { AdMob, BannerAdOptions, BannerAdSize, BannerAdPosition, BannerAdPluginEvents } from '@capacitor-community/admob';

@Injectable({
    providedIn: 'root'
})
export class AdMobService {

    appMargin: number = 0;

    constructor() { }

    public async bannerAd(admobId: string) {

        AdMob.addListener(BannerAdPluginEvents.SizeChanged, (info: any) => {
            // Subscribe Change Banner Size
            this.appMargin = parseInt(info.height, 10);
            if (this.appMargin > 0) {
                const app: HTMLElement = document.querySelector('ion-router-outlet');
                app.style.marginBottom = this.appMargin + 'px';
            }
        });

        const options: BannerAdOptions = {
            adId: admobId,
            adSize: BannerAdSize.ADAPTIVE_BANNER,
            position: BannerAdPosition.BOTTOM_CENTER,
            margin: 0,
            isTesting: true,
            npa: true
        };

        await AdMob.showBanner(options).catch(err => console.error('Could not init Admob banner', err));
    }
}

Package.json

  "dependencies": {
    "@angular/animations": "^14.2.5",
    "@angular/common": "~14.2.5",
    "@angular/core": "~14.2.5",
    "@angular/forms": "~14.2.5",
    "@angular/platform-browser": "~14.2.5",
    "@angular/platform-browser-dynamic": "~14.2.5",
    "@angular/router": "~14.2.5",
    "@awesome-cordova-plugins/firebase-analytics": "^5.45.0",
    "@awesome-cordova-plugins/firebase-dynamic-links": "^5.45.0",
    "@awesome-cordova-plugins/social-sharing": "^5.45.0",
    "@capacitor-community/admob": "^4.0.0-1",
    "@capacitor/android": "^4.3.0",
    "@capacitor/app": "4.0.1",
    "@capacitor/core": "4.3.0",
    "@capacitor/haptics": "4.0.1",
    "@capacitor/keyboard": "4.0.1",
    "@capacitor/status-bar": "4.0.1",
    "@ionic/angular": "^6.3.0",
    "@ionic/storage-angular": "^3.0.6",
    "animate.css": "^4.1.1",
    "chart.js": "^3.9.1",
    "cordova-plugin-firebase-analytics": "^7.0.5",
    "cordova-plugin-firebase-dynamiclinks": "^7.0.2",
    "cordova-plugin-x-socialsharing": "^6.0.4",
    "cordova-sqlite-storage": "^6.0.0",
    "cordova-support-android-plugin": "^2.0.4",
    "es6-promise-plugin": "^4.2.2",
    "localforage-cordovasqlitedriver": "^1.8.0",
    "primeicons": "^6.0.1",
    "primeng": "^14.1.2",
    "rxjs": "~7.5.7",
    "tslib": "^2.4.0",
    "zone.js": "~0.11.8"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~14.2.5",
    "@angular-eslint/builder": "~14.1.2",
    "@angular-eslint/eslint-plugin": "~14.1.2",
    "@angular-eslint/eslint-plugin-template": "~14.1.2",
    "@angular-eslint/template-parser": "~14.1.2",
    "@angular/cli": "~14.2.5",
    "@angular/compiler": "~14.2.5",
    "@angular/compiler-cli": "~14.2.5",
    "@angular/language-service": "~14.2.5",
    "@capacitor/cli": "4.3.0",
    "@ionic/angular-toolkit": "^7.0.0",
    "@types/jasmine": "~4.3.0",
    "@types/jasminewd2": "~2.0.10",
    "@types/node": "^18.8.3",
    "@typescript-eslint/eslint-plugin": "5.39.0",
    "@typescript-eslint/parser": "5.39.0",
    "eslint": "^8.25.0",
    "eslint-plugin-import": "2.26.0",
    "eslint-plugin-jsdoc": "39.3.6",
    "eslint-plugin-prefer-arrow": "1.2.3",
    "jasmine-core": "~4.4.0",
    "jasmine-spec-reporter": "~7.0.0",
    "karma": "~6.4.1",
    "karma-chrome-launcher": "~3.1.1",
    "karma-coverage": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~3.0.3",
    "karma-jasmine": "~5.1.0",
    "karma-jasmine-html-reporter": "^2.0.0",
    "protractor": "~7.0.0",
    "ts-node": "~10.9.1",
    "typescript": "~4.8.4"
  },

MainActivity

import android.os.Bundle;
import com.getcapacitor.BridgeActivity;

public class MainActivity extends BridgeActivity {

  @Override
  public void onCreate(Bundle savedInstanceState) {
    registerPlugin(com.getcapacitor.community.admob.AdMob.class);
    super.onCreate(savedInstanceState);
  }
}

Test ads are working fine I also get this in my LogCat

Caused by: java.lang.ClassNotFoundException: Didn't find class "android.webkit.PacProcessor"
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.webkit.WebViewRenderProcessClient"
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.app.AppOpsManager$OnOpActiveChangedListener"
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.displayhash.DisplayHashResultCallback"

I have tried to work with the ProGuard rules but no luck :(

Can someone point me in the right direction?

[kingsleylow]

you need to initialize the admod first then display ad.

[Fearcoder]

Hello @kingsleylow ,

I did that in my app.module.ts like the demo code. I have found a solution: I have to set minify on false and then it works. But I wanna use the minify on true because it makes the app smaller. Are there any pro guard rules for this?

[eufelipemateus]

Same here

[eufelipemateus]

i put setTimeout(this._ad.showBanner, 1000, this.adId) this works for me

[yaxcode]

i put setTimeout(this._ad.showBanner, 1000, this.adId) this works for me

I had the same error and this works for me. It seems that when it tries to display the banner it hasn't initialized yet and causes an error.