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java.lang.NullPointerException: Attempt to invoke interface method 'java.util.Iterator java.util.List.iterator()' on a null object reference at android.os.Parcel.readException(Parcel.java:1552) at android.os.Parcel.readException(Parcel.java:1499) at android.net.IConnectivityManager$Stub$Proxy.getActiveNetworkInfo(IConnectivityManager.java:1058) at android.net.ConnectivityManager.getActiveNetworkInfo(ConnectivityManager.java:658) at com.inmobi.commons.core.utilities.b.b.b(DeviceInfo.java:50) at com.inmobi.commons.core.utilities.b.b.a(DeviceInfo.java:115) at com.inmobi.ads.i.c(AdUnit.java:50471) at com.inmobi.ads.i.b(AdUnit.java:1835) at com.inmobi.ads.i.a(AdUnit.java:869) at com.inmobi.ads.ac.a(InterstitialAdUnit.java:566) at com.inmobi.ads.i$8.run(AdUnit.java:1631) at android.os.Handler.handleCallback(Handler.java:815) at android.os.Handler.dispatchMessage(Handler.java:104) at android.os.Looper.loop(Looper.java:194) at android.app.ActivityThread.main(ActivityThread.java:5637) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:959) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754)

Alex
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    Possible duplicate of [What is a NullPointerException, and how do I fix it?](https://stackoverflow.com/questions/218384/what-is-a-nullpointerexception-and-how-do-i-fix-it) – f1sh Oct 11 '19 at 08:16
  • @Alex You can write your question not only the stack trace –  Oct 11 '19 at 08:19

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@Alex You must be calling iterator() method on a null List, to avoid this you can have a list != null check and do your work inside it and handle the else condition with some smooth flow of printing error log or a toast.

Dinkar Kumar
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