vds_quiz/vds-app/App/index.js

import { createStackNavigator, createAppContainer } from "react-navigation"

import Splash from "./screens/Splash"
import Banner from "./screens/Banner"
import QuizIndex from "./screens/QuizIndex"
import Quiz from "./screens/Quiz"
import Exam from "./screens/Exam"
import { colors, texts} from "./components/Variables"

const MainStack = createStackNavigator({
  Banner: {
    screen: Banner,
    navigationOptions: ({ navigation }) => ({
      header: null,
      backgroundColor: colors.yellow,
      headerStyle: {
        backgroundColor: colors.yellow
      }
    })
  },
  Splash: {
    screen: Splash,
    navigationOptions: ({ navigation }) => ({
      header: null,
      backgroundColor: colors.yellow,
      headerStyle: {
        backgroundColor: colors.yellow
      }
    })
  },
  QuizIndex: {
    screen: QuizIndex,
    navigationOptions: ({ navigation }) => ({
      headerTitle: texts.quizzes,
      headerTintColor: colors.white,
      backgroundColor: colors.dark_blue,
      headerStyle: {
        backgroundColor: colors.dark_blue
      }
    })
  },
  Quiz: {
    screen: Quiz,
    navigationOptions: ({ navigation }) => ({
      headerTitle: navigation.getParam("title"),
      headerTintColor: colors.white,
      headerStyle: {
        backgroundColor: navigation.getParam("color"),
        borderBottomColor: navigation.getParam("color")
      }
    })
  },
  Exam: {
    screen: Exam,
    navigationOptions: ({ navigation }) => ({
      headerTitle: navigation.getParam("title"),
      headerTintColor: colors.white,
      headerStyle: {
        backgroundColor: navigation.getParam("color"),
        borderBottomColor: navigation.getParam("color")
      }
    })
  }
})

export default createAppContainer(MainStack)