Name: Add the Total Remaining Item Count to the Footer with React Native Text
Uploaded: 2016-11-19T14:43:20-06:00
Description: In this lesson we'll add a footer text item to show the total count of what is in the current filtered view. We'll show the technique of deriving computed values in render functions.

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 add a footer text item to show the total count of what is in the current filtered view. We'll show the technique of deriving computed values in render functions.

https://app.egghead.io/api/v1/lessons/react-add-the-total-remaining-item-count-to-the-footer-with-react-native-text/subtitles

[00:00] We'll start by rendering a text component. We'll say this.props.count, and then type the text count. If we refresh, you can see that no count is rendering. We'll switch back to our app, scroll down to our footer, pass in count=filter items active, because we want to filter for the active items.

[00:21] We'll pass in this.state.items. Then we will get the length of that. Now that we have the length being passed down, we can refresh, and see that we have a count of zero. We can add an item, which will then increase our count. If we toggle it to complete, it'll drop our count to zero.

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

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Build a React Native Todo Application