useDisclose is a custom hook used to help handle common open, close, or toggle scenarios. It can be used to control feedback component such as Modal, AlertDialog, Drawer, etc.
import { useDisclose } from 'native-base';
function UseDiscloseExample() {
  const {
    isOpen,
    onOpen,
    onClose
  } = useDisclose();
  return <>
      <Modal isOpen={isOpen} onClose={onClose}>
        <Modal.Content>
          <Modal.CloseButton />
          <Modal.Header fontSize="4xl" fontWeight="bold">
            Hello World
          </Modal.Header>
          <Modal.Body>
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Quos quasi
            cupiditate expedita, ipsa corporis officia totam similique delectus!
            Debitis esse, ea blanditiis iste enim iure at odit fugiat autem.
            Accusamus?
            <Input mt={4} placeholder="Lorem ipsum dolor sit" />
          </Modal.Body>
          <Modal.Footer>
            <Button colorScheme="blue" mr={1}>
              Save
            </Button>
            <Button onPress={onClose}>Close</Button>
          </Modal.Footer>
        </Modal.Content>
      </Modal>
      <Button onPress={onOpen}>Open Modal</Button>
    </>;
}
function Example() {
  return <NativeBaseProvider>
      <Center flex={1}>
        <UseDiscloseExample />
      </Center>
    </NativeBaseProvider>;
}
The useDisclosure hook returns an object with the following fields:
isOpen: ( boolean ) Show the component; triggers the enter or exit states.
onClose: ( function ) Callback function to set a falsy value for the isOpen parameter.
onOpen: ( function ) Callback function to set a truthy value for the isOpen parameter.
onToggle: ( function ) Callback function to toggle the value of the isOpen parameter.