NativeBase is made from effective building blocks referred to as components. The Components are constructed in pure React Native platform along with some JavaScript functionality with rich set of customisable properties. These components allow you to quickly build the perfect interface.
NativeBase includes components such as anatomy of your app screens, header, input, buttons, badge, icon, form, checkbox, radio-button, list, card, actionsheet, picker, segment, swipeable list, tabs, toast, drawer, thumbnail, spinner, layout, search bar etc. You can style these components with StyleSheet objects.
This docs have limited examples. For more examples go through NativeBase-KitchenSink