Name: Persist Items with React Native AsyncStorage
Uploaded: 2016-11-19T15:15:39-06:00
Description: In this lesson we'll use AsyncStorage to save our items so they persist with each reload of the application. We'll show how to use the promise base interface to handle success as well as handle errors.

Setup React Native for iOS and Android

Create the Basic React Native Todo Application Layout

Create a React Native TextInput

Add a Toggle All Complete Button with React Native TouchableOpacity

Create a List of Items with a React Native ListView

Add a Complete Toggle with React Native Switch

Add a Remove Item Button to Each Row with React Native TouchableOpacity

Filter Items in the React Native List View

Add the Total Remaining Item Count to the Footer with React Native Text

Add a Clear All Complete Button to the Footer with React Native TouchableOpacity 

Persist Items with React Native AsyncStorage

Add a Loading Indicator While Loading Items with React Native ActivityIndicator

Inline Edit Todo Items in a React Native ListView

Build a React Native Todo Application

In this lesson we'll use AsyncStorage to save our items so they persist with each reload of the application. We'll show how to use the promise base interface to handle success as well as handle errors.

https://app.egghead.io/api/v1/lessons/react-persist-items-with-react-native-asyncstorage/subtitles

[00:00] We'll start by importing AsynchStorage from React native. Now, we'll create the componentWillMount lifecycle method, we'll then call asynchstorage.getItem, pass in the key of "items" to gather, which returns promise of then, which takes a function.

[00:20] It then passes in a string of jason, we'll call try and catch the error. We need this in case our JSON is unparsable, we'll say const items = JSON.parse(json); then, call this.setSource(items, items).

[00:43] Now, we'll scroll down to our setSouce, and because all of our calls go through setSource, we can say asynchStorage.setItem(items) and then JSON.Stringify the items that we get passed in.

[01:00] Now, if we go and we refresh our emulator, you can add an item, refresh again, and there it is.

Persist Items with React Native AsyncStorage

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Build a React Native Todo Application