Facebook App Event sdk 4.38.0 throws NPE in ViewHierarchy.setAppearanceOfView

Question

I'm having a problem in one of my apps where I use facebook sdk. After upgrading sdk from 4.27.0 to 4.38.0 fabric started to log this fatal exception. I don't know when or how it happens cause i can't reproduce it myself. Maybe some of you had this problem after upgrading facebook SDK.

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
   at com.facebook.appevents.codeless.internal.ViewHierarchy.setAppearanceOfView(ViewHierarchy.java:182)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:197)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.getClickableElementsOfView(ButtonIndexer.java:206)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.attachListeners(ButtonIndexer.java:166)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.process(ButtonIndexer.java:161)
   at com.facebook.marketing.internal.ButtonIndexer$ViewProcessor.run(ButtonIndexer.java:145)
   at android.os.Handler.handleCallback(Handler.java:754)
   at android.os.Handler.dispatchMessage(Handler.java:95)
   at android.os.Looper.loop(Looper.java:163)
   at android.app.ActivityThread.main(ActivityThread.java:6221)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)

Answer 1

The fixed version 4.40.0 of the facebook android SDK was recently released:

• https://developers.facebook.com/docs/android/change-log-4x/
• https://github.com/facebook/facebook-android-sdk/releases/tag/sdk-version-4.40.0