Fix proguard

Author: hannesa2

app/build.gradle.kts

@@ -9,6 +9,7 @@ plugins {
 android {
     namespace = "info.hannes.github.sample"
     compileSdk = 36
+
     defaultConfig {
         versionCode = getGitCommitCount()
         versionName = "1.0"
@@ -24,6 +25,17 @@ android {
             ),
         )
     }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = true
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro",
+            )
+        }
+    }
+
     packaging {
         resources {
             pickFirsts += setOf("META-INF/atomicfu.kotlin_module")

app/proguard-rules.pro

@@ -0,0 +1,18 @@
+# Keep Kotlin metadata annotations to avoid D8 metadata rewriting errors
+-keep class kotlin.Metadata { *; }
+-keepattributes RuntimeVisibleAnnotations
+
+# Keep Kotlin coroutines
+-keepclassmembernames class kotlinx.** {
+    volatile <fields>;
+}
+
+# Keep all classes that use Kotlin metadata
+-keep @kotlin.Metadata class * { *; }
+-keep class kotlin.** { *; }
+-keep interface kotlin.** { *; }
+
+# Don't warn about missing Kotlin classes
+-dontwarn kotlin.**
+-dontwarn kotlinx.**
+

gradle.properties

@@ -3,4 +3,7 @@ android.nonFinalResIds=false
 android.nonTransitiveRClass=false
 android.useAndroidX=true
 
+# Disable R8 Kotlin metadata rewriting to avoid D8 errors
+android.enableR8.fullMode=false
+
 org.gradle.jvmargs=-Xmx4092m