Merge pull request #476 from microsoftgraph/feature/proguard-rules

- fixes #462 adds sample proguard rules

Author: baywet

README.md

@@ -37,7 +37,7 @@ Add the dependency in `dependencies` in pom.xml
 
 ### 1.3 Enable ProGuard (Android)
 
-The nature of the Graph API is such that the SDK needs quite a large set of classes to describe its functionality. You need to ensure that [ProGuard](https://developer.android.com/studio/build/shrink-code.html) is enabled on your project. Otherwise, you will incur long build times for functionality that is not necessarily relevant to your particular application. If you are still hitting the 64K method limit, you can also enable [multidexing](https://developer.android.com/studio/build/multidex.html).
+The nature of the Graph API is such that the SDK needs quite a large set of classes to describe its functionality. You need to ensure that [ProGuard](https://developer.android.com/studio/build/shrink-code.html) is enabled on your project. Otherwise, you will incur long build times for functionality that is not necessarily relevant to your particular application. If you are still hitting the 64K method limit, you can also enable [multidexing](https://developer.android.com/studio/build/multidex.html). Checkout the [recommended rules](./docs/proguard-rules.txt).
 
 ## 2. Getting started
 

docs/proguard-rules.txt

@@ -0,0 +1,39 @@
+-keep class com.microsoft.** { *; }
+
+## GSON 2.2.4 specific rules ##
+# Source: https://github.com/google/gson/blob/master/examples/android-proguard-example/proguard.cfg
+# Gson uses generic type information stored in a class file when working with fields. Proguard
+# removes such information by default, so configure it to keep all of it.
+-keepattributes Signature
+# For using GSON @Expose annotation
+-keepattributes *Annotation*
+-keepattributes EnclosingMethod
+# Gson specific classes
+-keep class sun.misc.Unsafe { *; }
+-keep class com.google.gson.stream.** { *; }
+# Gson specific classes used by Broker.
+-keep class * implements com.google.gson.TypeAdapterFactory
+-keep class * implements com.google.gson.JsonSerializer
+-keep class * implements com.google.gson.JsonDeserializer
+
+-dontnote sun.misc.Unsafe
+-dontnote com.google.gson.**
+
+# JUnit
+-dontwarn org.junit.**
+-dontwarn junit.**
+
+# okhttp
+
+-keepattributes Signature
+-keepattributes *Annotation*
+-keep class okhttp3.** { *; }
+-keep interface okhttp3.** { *; }
+-dontwarn okhttp3.**
+
+# okio
+
+-keep class sun.misc.Unsafe { *; }
+-dontwarn java.nio.file.*
+-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
+-dontwarn okio.**