NullPointer on toLowerCase but I don't use that method anywhere

Question

I\'m getting the following crash dump in Firebase Crash Reports:

Exception java.lang.NullPointerException: Attempt to invoke virtual method \'java.lang.Strin         


        

Answer 1

My app ran into a similar issue.

When launched in Stock android devices(Mi A1), the App crashed with " keeps stopping popup". The Crashlytics in Fabric reported it as the

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.toLowerCase(java.util.Locale)' on a null object reference
   at bfx.run(:com.google.android.gms.dynamite_dynamitemodulesc@13452060@13.4.52 (040708-202483333):80)
   at java.lang.Thread.run(Thread.java:818)

But when I checked the Pre-launch report of the Release management in Google Play Console, it showed that the app was crashing for Pixel & Pixel 2 for an entirely different reason. The issue shown was

FATAL EXCEPTION: main Process: in.quickall.quickall, PID: 8345
java.lang.RuntimeException: Unable to start activity ComponentInfo{in.quickall.quickall/in.quickall.quickall.Main.MainActivity}: android.content.res.Resources$NotFoundException: Drawable in.quickall.quickall:drawable/splash_screen with resource ID #0x7f0700c0
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
    at android.app.ActivityThread.-wrap11(Unknown Source:0)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
    at android.os.Handler.dispatchMessage(Handler.java:105)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6541)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

And the issue started from the APK version were I implemented the code (given below) to remove the white screen on launch.

I removed this piece of code and now the Pre-launch report shows it as working fine in the Pixel devices.

Now the app launches correctly, but has to have the white screen at launch.