Post Medium - Criando um footer personalizado para nosso aplicativo - Body do App.js

App.js

<Container>
  <MapView
    style={{
      position: 'absolute',
      top: 0,
      left: 0,
      right: 0,
      bottom: 0,
    }}
    provider={PROVIDER_GOOGLE} // remove if not using Google Maps
    region={region}
    showsUserLocations
    loadinEnabled
  />
  <Footer>
    <Image source={FooterAppImage}>
      <TouchableOpacity>
        <Icon name="menu" size={30} color="#FFF" />
      </TouchableOpacity>
      <TouchableOpacity>
        <Icon name="notifications" size={30} color="#FFF" />
      </TouchableOpacity>
    </Image>
  </Footer>
</Container>