fix: add proguard rules for ausbc to fix JNI NoSuchFieldError

plugins/withProguardRules.js

@@ -0,0 +1,30 @@
+const { withDangerousMod } = require('@expo/config-plugins');
+const fs = require('fs');
+const path = require('path');
+
+const withProguardRules = (config) => {
+  return withDangerousMod(config, [
+    'android',
+    async (config) => {
+      const proguardPath = path.join(config.modRequest.platformProjectRoot, 'app', 'proguard-rules.pro');
+      const customRules = `
+# Keep ausbc and UVCCamera classes for JNI
+-keep class com.serenegiant.usb.** { *; }
+-keepclassmembers class com.serenegiant.usb.** { *; }
+-keep class com.jiangdg.ausbc.** { *; }
+-keepclassmembers class com.jiangdg.ausbc.** { *; }
+`;
+      if (fs.existsSync(proguardPath)) {
+        let content = fs.readFileSync(proguardPath, 'utf8');
+        if (!content.includes('com.serenegiant.usb')) {
+          fs.appendFileSync(proguardPath, customRules);
+        }
+      } else {
+        fs.writeFileSync(proguardPath, customRules);
+      }
+      return config;
+    },
+  ]);
+};
+
+module.exports = withProguardRules;