Shrink APK

build.gradle

@@ -54,6 +54,8 @@ android {
 
     buildTypes {
         debug {
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard.pro'
             testCoverageEnabled true
         }
         release {

proguard.pro

@@ -1,9 +1,26 @@
--dontshrink
+-dontobfuscate
 
-# appcompat-v7 v23.1.1 not compatible with some samsung 4.2 roms
+# https://code.google.com/p/android/issues/detail?id=78293
-# https://code.google.com/p/android/issues/detail?id=78377
+-keep public class android.support.v7.widget.** { *; }
--keep class !android.support.v7.view.menu.**,** {*;}
+-keep public class android.support.v7.internal.widget.** { *; }
+-keep public class android.support.v7.internal.view.menu.** { *; }
+-keep public class * extends android.support.v4.view.ActionProvider {
+    public <init>(android.content.Context);
+}
 
--keepattributes **
+# google-rfc-2445-20110304
+-dontwarn com.google.ical.compat.jodatime.**
 
--dontwarn **
+# https://github.com/JakeWharton/butterknife/blob/dd54788c2629e2bdd64232de7ccfa8d58910e06c/butterknife/proguard-rules.txt
+-keep public class * implements butterknife.internal.ViewBinder { public <init>(); }
+-keep class butterknife.*
+-keepclasseswithmembernames class * { @butterknife.* <methods>; }
+-keepclasseswithmembernames class * { @butterknife.* <fields>; }
+
+# guava
+-dontwarn sun.misc.Unsafe
+-dontwarn java.lang.ClassValue
+-dontwarn javax.annotation.**
+-dontwarn javax.inject.**
+-dontwarn com.google.j2objc.annotations.**
+-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement