What's the ProGuard config?

[ysy950803]

Set "minifyEnabled" to true(no problem if set false) before running release apk, there would be a FC:

2020-05-18 13:10:21.228 1992-1992/com.my.app E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.my.app, PID: 1992
    java.lang.ExceptionInInitializerError
        at androidx.security.crypto.EncryptedSharedPreferences$PrefKeyEncryptionScheme.<clinit>(:146)
        at c.c.d.f.i.g.<clinit>(:35)
        at c.c.d.f.i.g.a(:110)
        at c.c.d.f.f.l(:148)
        at c.c.d.f.f.m(:120)
        at c.c.d.f.f.a(:63)
        at com.my.app.MyApp$a.a(:69)
        at d.a.a.onCreate(:181)
        at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1190)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6609)
        at android.app.ActivityThread.access$1400(ActivityThread.java:229)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1892)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:228)
        at android.app.ActivityThread.main(ActivityThread.java:7589)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:953)
     Caused by: java.lang.RuntimeException: Field keySize_ for c.b.c.a.g.ja not found. Known fields are [public int c.b.c.a.g.ja.g, public static final c.b.c.a.g.ja c.b.c.a.g.ja.e, public static volatile c.b.e.ea c.b.c.a.g.ja.f]
        at c.b.e.Y.a(:608)
        at c.b.e.Y.a(:502)
        at c.b.e.Y.a(:221)
        at c.b.e.N.a(:85)
        at c.b.e.N.a(:71)
        at c.b.e.ga.a(:93)
        at c.b.e.ga.a(:107)
        at com.google.protobuf.GeneratedMessageLite.l(:171)
        at com.google.protobuf.GeneratedMessageLite$a.d(:391)
        at com.google.protobuf.GeneratedMessageLite$a.c(:399)
        at c.b.c.a.c.e.a(:45)
        at c.b.c.a.c.e.<clinit>(:38)
        at androidx.security.crypto.EncryptedSharedPreferences$PrefKeyEncryptionScheme.<clinit>(:146) 
        at c.c.d.f.i.g.<clinit>(:35) 
        at c.c.d.f.i.g.a(:110) 
        at c.c.d.f.f.l(:148) 
        at c.c.d.f.f.m(:120) 
        at c.c.d.f.f.a(:63) 
        at com.my.app.MyApp$a.a(:69) 
        at d.a.a.onCreate(:181) 
        at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1190) 
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6609) 
        at android.app.ActivityThread.access$1400(ActivityThread.java:229) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1892) 
        at android.os.Handler.dispatchMessage(Handler.java:107) 
        at android.os.Looper.loop(Looper.java:228) 
        at android.app.ActivityThread.main(ActivityThread.java:7589) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:953) 

I tried:

-keep class androidx.security.crypto.** {*;}
-keep public enum androidx.security.crypto.EncryptedSharedPreferences$** {
  **[] $VALUES;
  public *;
}

but not working.

[SohailZahidGit]

@ysy950803 is your issue resolved? i am also facing above issue?

[ysy950803]

@ysy950803 is your issue resolved? i am also facing above issue?

I had solved, and you can look this: https://github.com/android/security-samples/pull/59