Setting State in React Native with setState

Once a user types input into a text box, we want to do something with that input. We'll use setState to change the value of an array of items in the parent component.

Adding the item to that array using setState will automatically re-render the components, and will show the new item in the list.

Summary of Content:

• Switch the TextInput to a Form from native base
• Convert the hard-coded items variable to an array in state
• Using setState to add an item to an array without mutation
• Using react navigation and goBack to navigate back in the stack