MainActivity.java

package com.cerezabusiness.supercerebros;

import com.facebook.react.ReactActivity;
// react-native-splash-screen instalation
import org.devio.rn.splashscreen.SplashScreen; // here
import android.os.Bundle;//here

public class MainActivity extends ReactActivity {

  /**
   * Returns the name of the main component registered from JavaScript. This is used to schedule
   * rendering of the component.
   */
  //react-native-splash-screen installation
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      SplashScreen.show(this);  // here
      super.onCreate(savedInstanceState);
  }
  @Override
  protected String getMainComponentName() {
    return "supercerebros";
  }
}