timepill-app/android/app/src/main/java/com/timepill/MainApplication.java

package com.timepill;

import android.app.Application;

import com.facebook.react.ReactApplication;
import com.facebook.react.ReactNativeHost;
import com.facebook.react.ReactPackage;
import com.facebook.react.shell.MainReactPackage;
import com.facebook.soloader.SoLoader;

import java.util.Arrays;
import java.util.List;

import com.reactnativenavigation.NavigationApplication;
import com.reactnativenavigation.react.NavigationReactNativeHost;
import com.reactnativenavigation.react.ReactGateway;


public class MainApplication extends NavigationApplication {

  @Override
  protected ReactGateway createReactGateway() {
    ReactNativeHost host = new NavigationReactNativeHost(this, isDebug(), createAdditionalReactPackages()) {
      @Override
      protected String getJSMainModuleName() {
        return "index";
      }
    };
    return new ReactGateway(this, isDebug(), host);
  }

  @Override
  public boolean isDebug() {
    return BuildConfig.DEBUG;
  }

  protected List<ReactPackage> getPackages() {
    // Add additional packages you require here
    // No need to add RnnPackage and MainReactPackage
    return Arrays.<ReactPackage>asList(
            // eg. new VectorIconsPackage()
    );
  }

  @Override
  public List<ReactPackage> createAdditionalReactPackages() {
    return getPackages();
  }



  private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
    @Override
    public boolean getUseDeveloperSupport() {
      return BuildConfig.DEBUG;
    }

    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(
          new MainReactPackage()
      );
    }

    @Override
    protected String getJSMainModuleName() {
      return "index";
    }
  };

  @Override
  public ReactNativeHost getReactNativeHost() {
    return mReactNativeHost;
  }

  @Override
  public void onCreate() {
    super.onCreate();
    SoLoader.init(this, /* native exopackage */ false);
  }
}