Add local storage logics

[SoleCincis]

• imported AsyncStorage from react native that let me use localStorage
• imported useEffect that tells React that my component needs to do something after render
• ALL_EXPENCES is gone because now initial state is showing the content of my storage or is an empty array
  • empty array because list of items is receiving data from expenses state and it wouldn't like a state as null
• initializeData is getting data from storage using getItem method from AsyncStorage and parsing them using a JS method JSON.parse (meaning transforming data from string into JS objects )
  • and is also updating expenses state with storedExpenses if existing or empty array
• useEffect function is getting sure that initializeData is running after render
• setItem is doing exactly opposite of getItem ; is updating the storage with new data and at same time JSON.stringify is translating them into strings
  • TODO : The app isn't behaving the way it should , when restarting the app all data should still be visible on the list but last item it's not

6 , #7

[donni106]

6 , #7

Yeah :)