Add proguard to sample app.

.gitignore

@@ -11,7 +11,6 @@
 /kohii/.gitignore
 /kohii-sample/.gitignore
 /kohii/proguard-rules.pro
-/kohii-sample/proguard-rules.pro
 /kohii/build/
 /kohii-sample/build/
 /kohii-sample/libs/

kohii-sample/proguard-rules.pro

@@ -0,0 +1,96 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
+
+# [BEGIN]
+
+-repackageclasses x
+
+#-dontobfuscate
+
+# JSR 305 annotations are for embedding nullability information.
+-dontwarn javax.annotation.**
+
+-keepclasseswithmembers class * {
+    @com.squareup.moshi.* <methods>;
+}
+
+-keep @com.squareup.moshi.JsonQualifier interface *
+
+-keepclassmembers class kohii.v1.sample.data.** { *; }
+
+# Enum field names are used by the integrated EnumJsonAdapter.
+# Annotate enums with @JsonClass(generateAdapter = false) to use them with Moshi.
+-keepclassmembers @com.squareup.moshi.JsonClass class * extends java.lang.Enum {
+    <fields>;
+}
+
+# The name of @JsonClass types is used to look up the generated adapter.
+-keepnames @com.squareup.moshi.JsonClass class *
+
+# Retain generated JsonAdapters if annotated type is retained.
+-if @com.squareup.moshi.JsonClass class *
+-keep class <1>JsonAdapter {
+    <init>(...);
+    <fields>;
+}
+-if @com.squareup.moshi.JsonClass class **$*
+-keep class <1>_<2>JsonAdapter {
+    <init>(...);
+    <fields>;
+}
+-if @com.squareup.moshi.JsonClass class **$*$*
+-keep class <1>_<2>_<3>JsonAdapter {
+    <init>(...);
+    <fields>;
+}
+-if @com.squareup.moshi.JsonClass class **$*$*$*
+-keep class <1>_<2>_<3>_<4>JsonAdapter {
+    <init>(...);
+    <fields>;
+}
+-if @com.squareup.moshi.JsonClass class **$*$*$*$*
+-keep class <1>_<2>_<3>_<4>_<5>JsonAdapter {
+    <init>(...);
+    <fields>;
+}
+-if @com.squareup.moshi.JsonClass class **$*$*$*$*$*
+-keep class <1>_<2>_<3>_<4>_<5>_<6>JsonAdapter {
+    <init>(...);
+    <fields>;
+}
+
+# Pretty bad config, but it works ... Investigate later.
+-keep class kotlin.reflect.jvm.internal.** { *; }
+
+-keepclassmembers class kotlin.Metadata {
+    public <methods>;
+}
+
+# Animal Sniffer compileOnly dependency to ensure APIs are compatible with older versions of Java.
+-dontwarn org.codehaus.mojo.animal_sniffer.*
+
+# -keep class com.google.api.** { *; }
+-keepclassmembers class * {
+  @com.google.api.client.util.Key <fields>;
+}
+
+-dontwarn com.google.protobuf.java_com_google_ads_interactivemedia_v3__sdk_1p_binary_b0308732GeneratedExtensionRegistryLite$Loader