A Customizable skeleton-like Loading Placeholder for React Native

React Native Skeleton Content

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React native Skeleton Content, a simple yet fully customizable component made to achieve loading animation in a Skeleton-style. Works in both iOS and Android.

Installation

npm install react-native-skeleton-content

Usage

1. Import react-native-skeleton-content:

import SkeletonContent from "react-native-skeleton-content";

2. Once you create the SkeletonContent, you have two options:

• Child Layout : The component will figure out the layout of its bones with the dimensions of its direct children (make sure to wrap them in sized-views, with width and height properties, otherwise, shiver animation might not work).
• Custom Layout : You provide a prop layout to the component specifying the size of the bones (see the Examples section below). Herunder is the example with a custom layout. A key is optionnal but highly recommended.

render () {
return (
<SkeletonContent
    containerStyle={{flex: 1, width: 300}}
    isLoading={false}
    layout={[
    { key: "someId", width: 220, height: 20, marginBottom: 6 },
    { key: "someOtherId", width: 180, height: 20, marginBottom: 6 },
    ]}
    >

    <Text style={styles.normalText}>
        Your content
    </Text>

    <Text style={styles.bigText}>
        Other content
    </Text>

</SkeletonContent>
)
}

3. Then simply sync the prop isLoading to your state to show/hide the SkeletonContent when the assets/data are available to the user.

render () {
    const { isLoading } = this.state;
    return (
    <SkeletonContent
        containerStyle={{flex: 1, width: 300}}
        isLoading={isLoading}>
        ...
    />
)
}

Props

Name	Type	Default	Description
isLoading	bool	required	Shows the Skeleton bones when true
layout	array of objects	[]	A custom layout for the Skeleton bones
duration	number	1200 ms	Duration of one cycle of animation
containerStyle	object	flex: 1	The style applied to the View containing the bones
easing	Easing	bezier(0.5, 0, 0.25, 1)	Easing of the bones animation
animationType	string	“shiver”	The animation to be used for animating the bones (see demos below)
animationDirection	string	“horizontalRight”	Used only for shiver animation, describes the direction and end-point (ex: horizontalRight goes on the x-axis from left to right)
boneColor	string	“#E1E9EE”	Color of the bones
highlightColor	string	“#F2F8FC”	Color of the highlight of the bones

Examples

See the playground section to experiment : 1 - Changing the direction of the animation (animationDirection prop) :

render () {
    return (
    <SkeletonContent
        containerStyle={{flex: 1, width: 300}}
        animationDirection="horizontalLeft"
        isLoading={true}>
        ...
    />
    )
}

2 - Changing the colors and switching to “pulse” animation (boneColor, highlightColor and animationType prop) :

render () {
    return (
    <SkeletonContent
        containerStyle={{flex: 1, width: 300}}
        boneColor="#121212"
        highlightColor="#333333"
        animationType="pulse"
        isLoading={true}>
        ...
    />
    )
}

3 - Customizing the layout of the bones (layout prop) :

render () {
    return (
    <SkeletonContent
        containerStyle={{flex: 1, width: 300}}
        animationDirection="horizontalLeft"
        layout={[
        // long line
        { width: 220, height: 20, marginBottom: 6 },
        // short line
        { width: 180, height: 20, marginBottom: 6 },
        ...
        ]}
        isLoading={true}>
        ...
    />
    )
}

Playground

You can test out the features and different props easily on Snack. Don’t hesitate to take contact if anything is unclear !

Download Details:

Author: alexZajac

GitHub: https://github.com/alexZajac/react-native-skeleton-content

#react-native #react #programming