Android modifications

For Android support, we want to do the following things to our code base:

• Import the react-native-vector-icons library via Gradle
• Swap out the TabBarIOS component for an Android-based solution using the DrawerLayoutAndroid and ToolbarAndroid components to create a navigation bar that contains a drawer that slides out to toggle between the current and previous months' expenses
• Replace any NavigatorIOS instances with Navigator
• Remove ProgressViewIOS
• Remove the ExpandableCell components in AddExpensesModal and replace DatePickerIOS with DatePickerAndroid
• Add any Android-specific files to components that require them

Installing the vector icon library

You should not need to do anything extra to have the react-native-vector-icons library installed for Android since React Native link should have taken care of the entire process for you.

However, if you decided to link the library manually for iOS, the readme file for react-native-vector-icons has the latest, up-to-date instructions...