I am adding Google Play Servcies (admob) ads through mopub using the link
https://github.com/mopub/mopub-android-sdk/wiki/Integrating-with-Google-Play-Services
I followed all the steps but when I run the code it shows me error Couldn't locate or instantiate custom event: com.mopub.mobileads.GoogleAdMobBanner
After reading the topic http://help.mopub.com/customer/portal/articles/785346-issues-with-admob-proguard I added the below lines in proguard-project.txt file of my project and sdk project proguard.cfg file but issue is still not solve. Please help.
-keep class com.google.android.gms.common.GooglePlayServicesUtil {*;}
# AdMob Support
-keep class com.google.ads.**
-keepclassmembers class com.mopub.mobileads.* { public *; }
-keep public class com.mopub.mobileads.*