Adding Flipper to an existing React Native project

adding_flipper.diff

diff --git a/android/app/build.gradle b/android/app/build.gradle
index 6560b78..eade6f6 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -176,12 +176,21 @@ android {
 
         }
     }
+    packagingOptions {
+        pickFirst '**/libc++_shared.so'
+    }
 }
 
 dependencies {
     implementation fileTree(dir: "libs", include: ["*.jar"])
     implementation "com.facebook.react:react-native:+"  // From node_modules
 
+    debugImplementation("com.facebook.flipper:flipper:${FLIPPER_VERSION}") {
+        exclude group:'com.facebook.yoga'
+        exclude group:'com.facebook.flipper', module: 'fbjni'
+        exclude group:'com.facebook.litho', module: 'litho-annotations'
+    }
+
     if (enableHermes) {
         def hermesPath = "../../node_modules/hermes-engine/android/";
         debugImplementation files(hermesPath + "hermes-debug.aar")
diff --git a/android/app/src/main/java/com/rnapp_old/MainApplication.java b/android/app/src/main/java/com/rnapp_old/MainApplication.java
index 38aa276..68e110a 100644
--- a/android/app/src/main/java/com/rnapp_old/MainApplication.java
+++ b/android/app/src/main/java/com/rnapp_old/MainApplication.java
@@ -2,11 +2,14 @@ package com.rnapp_old;
 
 import android.app.Application;
 import android.content.Context;
+
 import com.facebook.react.PackageList;
 import com.facebook.react.ReactApplication;
+import com.facebook.react.ReactInstanceManager;
 import com.facebook.react.ReactNativeHost;
 import com.facebook.react.ReactPackage;
 import com.facebook.soloader.SoLoader;
+
 import java.lang.reflect.InvocationTargetException;
 import java.util.List;
 
@@ -43,23 +46,30 @@ public class MainApplication extends Application implements ReactApplication {
   public void onCreate() {
     super.onCreate();
     SoLoader.init(this, /* native exopackage */ false);
-    initializeFlipper(this); // Remove this line if you don't want Flipper enabled
+    initializeFlipper(
+        this,
+        getReactNativeHost()
+            .getReactInstanceManager()); // Remove this line if you don't want Flipper enabled
   }
 
   /**
-   * Loads Flipper in React Native templates.
+   * Loads Flipper in React Native templates. Call this in the onCreate method with something like
+   * initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
    *
    * @param context
    */
-  private static void initializeFlipper(Context context) {
+  private static void initializeFlipper(
+      Context context, ReactInstanceManager reactInstanceManager) {
     if (BuildConfig.DEBUG) {
       try {
         /*
          We use reflection here to pick up the class that initializes Flipper,
         since Flipper library is not available in release mode
         */
-        Class<?> aClass = Class.forName("com.facebook.flipper.ReactNativeFlipper");
-        aClass.getMethod("initializeFlipper", Context.class).invoke(null, context);
+        Class<?> aClass = Class.forName("com.rnapp_old.ReactNativeFlipper");
+        aClass
+            .getMethod("initializeFlipper", Context.class, ReactInstanceManager.class)
+            .invoke(null, context, reactInstanceManager);
       } catch (ClassNotFoundException e) {
         e.printStackTrace();
       } catch (NoSuchMethodException e) {
diff --git a/android/gradle.properties b/android/gradle.properties
index 027ef9d..01f6020 100644
--- a/android/gradle.properties
+++ b/android/gradle.properties
@@ -19,3 +19,5 @@
 
 android.useAndroidX=true
 android.enableJetifier=true
+
+FLIPPER_VERSION=0.23.4