Add routes and core views

android/app/src/main/java/com/app/MainActivity.java

@@ -3,6 +3,7 @@ package com.app;
 import com.facebook.react.ReactActivity;
 import com.facebook.react.ReactActivityDelegate;
 import com.facebook.react.ReactRootView;
+import android.os.Bundle;
 
 public class MainActivity extends ReactActivity {
 
@@ -36,5 +37,10 @@ public class MainActivity extends ReactActivity {
       reactRootView.setIsFabric(BuildConfig.IS_NEW_ARCHITECTURE_ENABLED);
       return reactRootView;
     }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+      super.onCreate(null);
+    }
   }
 }