feat: support new arch in expo projects

Author: Minishlink

android/app/src/main/java/com/appzung/codepush/react/CodePush.java

@@ -203,6 +203,7 @@ public static String getJSBundleFile() {
 
     public static String getJSBundleFile(String assetsBundleFileName) {
         if (mCurrentInstance == null) {
+            CodePushUtils.log("A CodePush instance has not been created yet. Have you added it to your app's list of ReactPackages?");
             throw new CodePushNotInitializedException("A CodePush instance has not been created yet. Have you added it to your app's list of ReactPackages?");
         }
 

android/app/src/main/java/com/appzung/codepush/react/CodePushNativeModule.java

@@ -51,6 +51,7 @@ public class CodePushNativeModule extends BaseJavaModule {
     private String mClientUniqueId = null;
     private boolean mTelemetryEnabled = true;
     private boolean mDataTransmissionEnabled = true;
+    private boolean mIsExpoApp = false;
     private LifecycleEventListener mLifecycleEventListener = null;
     private int mMinimumBackgroundDuration = 0;
 
@@ -71,6 +72,8 @@ public CodePushNativeModule(ReactApplicationContext reactContext, CodePush codeP
         mTelemetryManager = codePushTelemetryManager;
         mUpdateManager = codePushUpdateManager;
 
+        mIsExpoApp = ExpoUtils.detectExpoEnvironment(reactContext);
+
         // Initialize module state while we have a reference to the current context.
         mBinaryContentsHash = CodePushUpdateUtils.getHashForBinaryContents(reactContext, mCodePush.isDebugMode());
 
@@ -210,8 +213,11 @@ private void loadBundle() {
 
                 String latestJSBundleFile = mCodePush.getJSBundleFileInternal(mCodePush.getAssetsBundleFileName());
 
-                // #2) Update the locally stored JS bundle file path
-                setJSBundle(getReactHostDelegate((ReactHostImpl) reactHost), latestJSBundleFile);
+                // if expo and new arch this is unnecessary, see https://github.com/expo/expo/blob/8113ce44edaef0311e2daff3ab1a63b9731d2d6c/packages/expo-updates/android/src/main/java/expo/modules/updates/procedures/RelaunchProcedure.kt#L148
+                if (!mIsExpoApp) {
+                    // #2) Update the locally stored JS bundle file path
+                    setJSBundle(getReactHostDelegate((ReactHostImpl) reactHost), latestJSBundleFile);
+                }
 
                 // #3) Get the context creation method
                 try {

android/app/src/main/java/com/appzung/codepush/react/ExpoUtils.java

@@ -0,0 +1,22 @@
+package com.appzung.codepush.react;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+
+public class ExpoUtils {
+
+    /**
+     * Detects if the app is running in an Expo environment by checking for
+     * the presence of Expo's ReactNativeHostWrapper class.
+     *
+     * @param reactContext The React application context
+     * @return true if Expo environment is detected, false otherwise
+     */
+    public static boolean detectExpoEnvironment(ReactApplicationContext reactContext) {
+        try {
+            Class.forName("expo.modules.ReactNativeHostWrapper");
+            return true;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+}