Проблема с защитой при включении

Question

Proguard returned with error code 1. See console 
Warning: com.google.android.gms.ads.formats.NativeAdView: can't find referenced  method 'FrameLayout(android.content.Context,android.util.AttributeSet,int,int)' in class android.widget.FrameLayout 
    You should check if you need to specify additional program jars. 
    Warning: there were 1 unresolved references to program class members. 
    Your input classes appear to be inconsistent. 
    You may need to recompile them and try again. 
    Alternatively, you may have to specify the option 
    '-dontskipnonpubliclibraryclassmembers'. 
    java.io.IOException: Please correct the above warnings first. 
    at proguard.Initializer.execute(Initializer.java:321) 
    at proguard.ProGuard.initialize(ProGuard.java:211) 
    at proguard.ProGuard.execute(ProGuard.java:86) 
    at proguard.ProGuard.main(ProGuard.java:492) 

Answer 1

Я меняю объект сборки проекта с Android 4.4.2 на Android 5.1.1, а затем проблема не повторится.

Надеюсь, это поможет.