Autocomplete dropdown in React Native

Hi, I am trying to build an autocomplete dropdown Text Input in react native and really not grasping the concept. I have tried to read through the code that maxkordiyak provided on github, but it leaves me puzzled. Is there anyone versed enough in react native to help me understand? https://github.com/maxkordiyak/react-native-dropdown-autocomplete/blob/master/README.md I do not get what the api is used for and want to avoid that in my code - all i need is to offer the user a „live as you type“ autocomplete dropdown menu from an array of strings.