From 41f8462ffe73ff1de90669528a00d7649a6d85f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Wisniewski?= <lpw.wisniewski@gmail.com>
Date: Tue, 6 Oct 2026 19:46:30 +0200
Subject: [PATCH] 1.5: shrink and optimize release builds with R8

Release APK goes from 115 KB to 47 KB. Shizuku.newProcess is kept explicitly
because ShizukuGrant reaches it by reflection.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 app/build.gradle                                 | 8 +++++---
 app/proguard-rules.pro                           | 8 ++++++++
 fastlane/metadata/android/en-US/changelogs/6.txt | 1 +
 3 files changed, 14 insertions(+), 3 deletions(-)
 create mode 100644 app/proguard-rules.pro
 create mode 100644 fastlane/metadata/android/en-US/changelogs/6.txt

diff --git a/app/build.gradle b/app/build.gradle
index 9c4d73c..eb5da8e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -10,13 +10,15 @@ android {
         applicationId "com.lpw.graypause"
         minSdk 33
         targetSdk 36
-        versionCode 5
-        versionName "1.4"
+        versionCode 6
+        versionName "1.5"
     }
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro"
         }
     }
 
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
new file mode 100644
index 0000000..27988bb
--- /dev/null
+++ b/app/proguard-rules.pro
@@ -0,0 +1,8 @@
+# ShizukuGrant calls this private method by reflection (Shizuku 13 hides it); R8 would
+# otherwise rename or drop it and the "Grant with Shizuku" button would fail at runtime.
+-keep class rikka.shizuku.Shizuku {
+    private static rikka.shizuku.ShizukuRemoteProcess newProcess(java.lang.String[], java.lang.String[], java.lang.String);
+}
+
+# Not shipped: compile-time annotations referenced by the Shizuku library.
+-dontwarn androidx.annotation.**
diff --git a/fastlane/metadata/android/en-US/changelogs/6.txt b/fastlane/metadata/android/en-US/changelogs/6.txt
new file mode 100644
index 0000000..987fce5
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/6.txt
@@ -0,0 +1 @@
+Smaller APK: release builds are now shrunk and optimized with R8.