[FIX] Flipper on Android (#4771)

android/app/src/debug/java/chat/rocket/reactnative/MainDebugApplication.java

@@ -1,25 +0,0 @@
-package chat.rocket.reactnative;
-
-import android.content.Context;
-
-import com.facebook.react.ReactInstanceManager;
-
-public class MainDebugApplication extends MainApplication  {
-
-  @Override
-  public void onCreate() {
-    super.onCreate();
-    initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
-  }
-
-  /**
-   * Loads Flipper in React Native templates. Call this in the onCreate method with something like
-   * initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
-   *
-   * @param context
-   * @param reactInstanceManager
-   */
-  private static void initializeFlipper(Context context, ReactInstanceManager reactInstanceManager) {
-    ReactNativeFlipper.initializeFlipper(context, reactInstanceManager);
-  }
-}

android/app/src/main/java/chat/rocket/reactnative/MainApplication.java

@@ -9,13 +9,16 @@ import com.facebook.react.ReactApplication;
 import com.facebook.react.ReactNativeHost;
 import com.facebook.react.ReactPackage;
 import com.facebook.react.config.ReactFeatureFlags;
+import com.facebook.react.ReactInstanceManager;
 import com.facebook.soloader.SoLoader;
 import com.reactnativecommunity.viewpager.RNCViewPagerPackage;
 import com.facebook.react.bridge.JSIModulePackage;
 import com.swmansion.reanimated.ReanimatedJSIModulePackage;
+import android.content.Context;
 import android.content.res.Configuration;
 import expo.modules.ApplicationLifecycleDispatcher;
 import expo.modules.ReactNativeHostWrapper;
+import java.lang.reflect.InvocationTargetException;
 
 import java.util.Arrays;
 import java.util.List;
@@ -76,6 +79,7 @@ public class MainApplication extends Application implements ReactApplication {
     // If you opted-in for the New Architecture, we enable the TurboModule system
     ReactFeatureFlags.useTurboModules = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED;
     SoLoader.init(this, /* native exopackage */ false);
+    initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
     ApplicationLifecycleDispatcher.onApplicationCreate(this);
   }
 
@@ -84,4 +88,35 @@ public class MainApplication extends Application implements ReactApplication {
     super.onConfigurationChanged(newConfig);
     ApplicationLifecycleDispatcher.onConfigurationChanged(this, newConfig);
   }
+
+  /**
+   * Loads Flipper in React Native templates. Call this in the onCreate method with something like
+   * initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
+   *
+   * @param context
+   * @param reactInstanceManager
+   */
+  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("chat.rocket.reactnative.ReactNativeFlipper");
+        aClass
+            .getMethod("initializeFlipper", Context.class, ReactInstanceManager.class)
+            .invoke(null, context, reactInstanceManager);
+      } catch (ClassNotFoundException e) {
+        e.printStackTrace();
+      } catch (NoSuchMethodException e) {
+        e.printStackTrace();
+      } catch (IllegalAccessException e) {
+        e.printStackTrace();
+      } catch (InvocationTargetException e) {
+        e.printStackTrace();
+      }
+    }
+  }
 }

android/gradle.properties

@@ -23,7 +23,7 @@ android.useAndroidX=true
 android.enableJetifier=true
 
 # Version of flipper SDK to use with React Native
-FLIPPER_VERSION=0.125.0
+FLIPPER_VERSION=0.175.0
 
 # Use this property to specify which architecture you want to build.
 # You can also override it from the CLI using