android - Why do I get a Theming error just after using Proguard? -

i never used proguard before, , force use due nasty samsung bug: https://code.google.com/p/android/issues/detail?id=78377

so, basically, followed explanations, , added in gradle file:

buildtypes {     release {         minifyenabled true         proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.pro'      } } 

and file contains line need workaround above bug:

-keep class !android.support.v7.internal.view.menu.**,** {*;} 

note: have followed many , many proguard template files, , tried lot of code there, don't know do.

the app compiles fine in debug, on phone, once try compile apk , upload it, got error:

illegalstateexception: need use theme.appcompat theme (or descendant) activity. 

please, not point me style.xml, theme appcompat, , works fine on debug.

thank lot help, or hint.

i used file: https://stackoverflow.com/a/8181232/327402

working fine now.

##---------------begin: proguard configuration common android apps ---------- -optimizationpasses 5 -dontusemixedcaseclassnames -dontskipnonpubliclibraryclasses -dontskipnonpubliclibraryclassmembers -dontpreverify -verbose -dump class_files.txt  -printseeds seeds.txt  -printusage unused.txt  -printmapping mapping.txt  -optimizations !code/simplification/arithmetic,!field/*,!class/merging/*   -allowaccessmodification -keepattributes *annotation* -renamesourcefileattribute sourcefile -keepattributes sourcefile,linenumbertable -repackageclasses ''   -keep public class * extends android.app.activity -keep public class * extends android.app.application -keep public class * extends android.app.service -keep public class * extends android.content.broadcastreceiver -keep public class * extends android.content.contentprovider -keep public class * extends android.app.backup.backupagenthelper -keep public class * extends android.preference.preference -keep public class com.android.vending.licensing.ilicensingservice -dontnote com.android.vending.licensing.ilicensingservice   # explicitly preserve serialization members. serializable interface # marker interface, wouldn't save them. -keepclassmembers class * implements java.io.serializable {     static final long serialversionuid;     private static final java.io.objectstreamfield[] serialpersistentfields;     private void writeobject(java.io.objectoutputstream);     private void readobject(java.io.objectinputstream);     java.lang.object writereplace();     java.lang.object readresolve(); }   # preserve native method names , names of classes. -keepclasseswithmembernames class * {     native <methods>; }   -keepclasseswithmembernames class * {     public <init>(android.content.context, android.util.attributeset); }   -keepclasseswithmembernames class * {     public <init>(android.content.context, android.util.attributeset, int); }   # preserve static fields of inner classes of r classes might accessed # through introspection. -keepclassmembers class **.r$* {   public static <fields>; }   # preserve special static methods required in enumeration classes. -keepclassmembers enum * {     public static **[] values();     public static ** valueof(java.lang.string); }   -keep public class * {     public protected *; }   -keep class * implements android.os.parcelable {   public static final android.os.parcelable$creator *; } ##---------------end: proguard configuration common android apps ----------   ##---------------begin: proguard configuration gson  ---------- # gson uses generic type information stored in class file when working fields. proguard # removes such information default, configure keep of it. -keepattributes signature   # gson specific classes -keep class sun.misc.unsafe { *; } #-keep class com.google.gson.stream.** { *; }   # application classes serialized/deserialized on gson -keep class com.google.gson.examples.android.model.** { *; }   ##---------------end: proguard configuration gson  ----------