cordova-plugin-local-notifications: Hundreds of crash reports from Google Play Console after deploying 0.9.0-beta3

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Provide a general summary of the issue.

Your Environment

• Plugin version: 0.9.0-beta3
• Platform: Android
• OS version: 8.1 / 8.0
• Device manufacturer / model: Mostly Pixels
• Cordova version (cordova -v): 8.0.0
• Cordova platform version (cordova platform ls): cordova-android 6.4.0
• Plugin config
• Ionic Version (if using Ionic) 3.9.2, using the plugin without ionic-native layer

Expected Behavior

Actual Behavior

After deploying an update to the play store a few days ago, I have been getting hundreds of crash reports from Google for devices running Android 8.1. and 8.0 (error attached below). No user complained yet, so I don’t know if the problem has any actual impact. I have tested the app on a Nexus 5X running android 8.1 as well as a few emulators, and I haven’t noticed any issues.

I am reporting this here just so you are aware, in case there is some actual issue.

Steps to Reproduce

Context

Debug logs

This is the error google has been reporting

java.lang.RuntimeException: 
  at android.app.ActivityThread.handleReceiver (ActivityThread.java:3194)
  at android.app.ActivityThread.-wrap17 (Unknown Source)
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1672)
  at android.os.Handler.dispatchMessage (Handler.java:106)
  at android.os.Looper.loop (Looper.java:164)
  at android.app.ActivityThread.main (ActivityThread.java:6494)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:438)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:807)

Caused by: java.lang.IllegalStateException: 
  at android.app.ContextImpl.getSharedPreferences (ContextImpl.java:387)
  at android.app.ContextImpl.getSharedPreferences (ContextImpl.java:372)
  at android.content.ContextWrapper.getSharedPreferences (ContextWrapper.java:167)
  at android.content.ContextWrapper.getSharedPreferences (ContextWrapper.java:167)
  at de.appplant.cordova.plugin.notification.Manager.getPrefs (Manager.java:399)
  at de.appplant.cordova.plugin.notification.Manager.getIds (Manager.java:206)
  at de.appplant.cordova.plugin.notification.Manager.getOptions (Manager.java:291)
  at de.appplant.cordova.plugin.notification.receiver.AbstractRestoreReceiver.onReceive (AbstractRestoreReceiver.java:64)
  at android.app.ActivityThread.handleReceiver (ActivityThread.java:3187)

Source code

This is a simplified version of the code I use to set notifications:

  setNotification(every:string, firstAt:Date){

    let text = this.notificationStrings.daily;

    let n:number = 30; // arbitrary large number
    
    let notifications = [];

    for (let i:number=0; i<n; i++){
      let theAt: Date = new Date(firstAt);
      if (every == 'minute'){
        theAt.setMinutes(theAt.getMinutes()+i);
      }else if (every == 'hour'){
        theAt.setHours(theAt.getHours()+i);
      }else if (every == 'day'){
        theAt.setDate(theAt.getDate()+i);
      }else if (every == 'week'){
        theAt.setDate(theAt.getDate()+i*7);
      }
      notifications.push(
        {
          id: i,
          title: this.notificationStrings.title,
          text: text,
          icon: "",
          sound: true,
          priority: 1,
          smallIcon: "res://"+this.notificationStrings.icon,
          foreground: true,
          wakeup: false,
          trigger:{
            at: theAt
          }
        }
      );

    }

    cordova.plugins.notification.local.cancelAll(
      () => {
        cordova.plugins.notification.local.schedule(notifications,
          () => {
            console.log("notification set ", firstAt, every);
          }
        );
      }
    );
}