From 2838141b264176a3d07d01bd9ce578e13d97a54b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E3=83=BB=CF=89=E3=83=BB=EF=BC=88=E7=AB=B9=E5=AD=90?=
 =?UTF-8?q?=EF=BC=89?= <you948712@gmail.com>
Date: Wed, 21 Oct 2026 00:05:40 +0800
Subject: [PATCH] fix(android): preserve wind JNI callbacks
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Platform: android

Fix(zh-Hant): 修正 Android 正式版開啟風場圖層時閃退
Fix(en-US): stop Android release builds crashing when wind layers open
---
 android/app/proguard-rules.pro | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 android/app/proguard-rules.pro

diff --git a/android/app/proguard-rules.pro b/android/app/proguard-rules.pro
new file mode 100644
index 000000000..e41c34042
--- /dev/null
+++ b/android/app/proguard-rules.pro
@@ -0,0 +1,14 @@
+# JNI callbacks invoked by maplibre_gl's native WindParticleHost.
+# R8 cannot see these calls because they originate in C++: without this rule a
+# release build renames or drops all four, GetMethodID fails, and opening a
+# wind layer crashes with NoSuchMethodError. Debug builds are not shrunk, so
+# only a release build shows it.
+#
+# Flutter's Gradle plugin enables R8 for release builds and adds this file
+# when it exists; build.gradle.kts needs no change for it to apply.
+-keepclassmembers class org.maplibre.maplibregl.WindParticleLayer {
+    void onNativeInitialize();
+    void onNativeRender(double, double, double, double, double, double);
+    void onNativeContextLost();
+    void onNativeDeinitialize();
+}