Init using create-nitro-module

android/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+</manifest>

android/src/main/cpp/cpp-adapter.cpp

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+#include <jni.h>
+#include <fbjni/fbjni.h>
+#include "OmniOnLoad.hpp"
+
+JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void*) {
+  return facebook::jni::initialize(vm, []() {
+    margelo::nitro::omni::registerAllNatives();
+  });
+}

android/src/main/java/com/omni/HybridOmni.kt

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+package com.omni
+
+import android.graphics.Color
+import android.view.View
+import androidx.annotation.Keep
+import com.facebook.proguard.annotations.DoNotStrip
+import com.facebook.react.uimanager.ThemedReactContext
+import com.margelo.nitro.omni.HybridOmniSpec
+
+@Keep
+@DoNotStrip
+class HybridOmni(val context: ThemedReactContext): HybridOmniSpec() {
+    // View
+    override val view: View = View(context)
+
+    // Props
+    private var _isRed = false
+    override var isRed: Boolean
+        get() = _isRed
+        set(value) {
+            _isRed = value
+            view.setBackgroundColor(
+                if (value) Color.RED
+                else Color.BLACK
+            )
+        }
+}

android/src/main/java/com/omni/OmniPackage.kt

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+package com.omni;
+
+import com.facebook.react.bridge.NativeModule;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.module.model.ReactModuleInfoProvider;
+import com.facebook.react.BaseReactPackage;
+import com.facebook.react.uimanager.ViewManager;
+import com.margelo.nitro.omni.*;
+import com.margelo.nitro.omni.views.*;
+
+
+public class OmniPackage : BaseReactPackage() {
+  override fun getModule(name: String, reactContext: ReactApplicationContext): NativeModule? = null
+
+  override fun getReactModuleInfoProvider(): ReactModuleInfoProvider = ReactModuleInfoProvider { emptyMap() }
+  
+  override fun createViewManagers(reactContext: ReactApplicationContext): List<ViewManager<*, *>> {
+    val viewManagers = ArrayList<ViewManager<*, *>>()
+    viewManagers.add(HybridOmniManager())
+    return viewManagers
+  }
+
+  companion object {
+    init {
+      OmniOnLoad.initializeNative()
+    }
+  }
+}
+