react-native-ring-picker

This is the ring-shaped wheel navigator/selector component for react native with smooth native animations and infinite scroll.

View

Dependencies

This plugin depends on the SVG icons and main ring is an SVG icon as well, so necessary module should be installed along.

Inside the react native project do the following

• npm i react-native-ring-picker --save install the picker element
• npm i react-native-svg --save install the direct dependency of react native svg, since default icon is SVG and picker accepts the collection of SVG icons
• cd ios got to iOS project folder
  • pod install install native packages inside iOS project folder necessary for SVG work like RNSVG from ../node_modules/react-native-svg

API

Usage and configuration samples

These are the props that are supported by the picker.

Name	Type	Default	Description
girthAngle	number	120	segment of icons spread above the ring, defines left and right visible borders to contain icons
onPress	Function	(iconId) => {}	callback function that is called with clicked icon id or when ring center is clicked with id of the icon snapped to the vertical axis
iconHideOnTheBackDuration	ms	250	delay in ms necessary to complete the animation of icon hiding while it moves beneath the ring to its most left or right position to make infinite scroll
icons	React.Element, Object, string	[{id: "action_1", title: "action_1"}, "action_2", "action_3", "action_4", "action_5"]	collection of icons to be rendered, can be either react elements, string or objects that will render default icons
showArrowHint	boolean	true	shows two-sided arrow with hint how to interact with ring, disappears on first picker integration
style	Object	{}	styles of the main component usually used for picker positioning
styleIconText	Object	{}	styles extending default icon title's text styles defined inside the picker
defaultIconColor	rgb, rgba, hex string	undefined	styles for setting default icon's color
isExpDistCorrection	boolean	true	exponential distance correction, if disabled icons will be homogeneously distant one from another
noExpDistCorrectionDegree	number	15	half of angle, where vertical axis will be bisector and where no exponential distance correction is applied, helps visually stacking icons in the middle

Basic default UI

<ReactNativeRingPicker
    girthAngle={120}
    iconHideOnTheBackDuration={300}
    styleIconText={{fontWeight: 'bold'}}
/>

whereas in this example 5 default icons are used from the react-native-ring-picker plugin itself.

Picker with custom icons with configurable ids and titles

<ReactNativeRingPicker
    icons={[{id: "custom_id_1", title: "custom title 1"}, <PaymentCard id={"payments"}/>, "action_3", <Search title={"find"} color={"#F88DFF"}/>, "action_5"]}
    girthAngle={120}
    iconHideOnTheBackDuration={300}
    onPress={(iconId) => someExternalIdSelection(iconId)}
    styleIconText={{fontWeight: "bold"}}
    style={{flex: 0, marginTop: 0}}/>
/>

where as in this example custom icons are sent into the picker. Picker accepts:

• either strings, which value would be converted into ids and title
• or objects with properties like id or title. If no id is passed - "default" will be used. If no title is passed id will be used.
• or react elements, basically any element can be used but I suggest SVG ones.

Picker with 3 custom icons and 90 girth angle.

<ReactNativeRingPicker
    icons={[<PaymentCard id={"payments"} title={"Your payments"}/>, {"id": "default", "title": "Default action"}, <Search title={"find"} color={"#F88DFF"}/>]}
    girthAngle={90}
    onPress={(iconId) => someExternalIdSelection(iconId)}
    showArrowHint={false}
/>

whereas in this example 3 custom icons are used:

• uses custom id and title
• {id, title} object uses custom id and title but default icon provided by the ring picker
• uses custom title and the component name is used as an id by default (search)

Exponential distance correction is disabled

<ReactNativeRingPicker
    icons={[
        <PaymentCard id={"payments"} title={"Your payments"}/>,
        <Profile/>,
        <Search title={"find"} color={"#F88DFF"}/>,
        <Family/>,
        <Health title={"Activity"}/>
    ]}
    girthAngle={120}
    onPress={(iconId) => setChosenId(iconId)}
    style={{flex: 0, marginTop: 0}}
    defaultIconColor={"#ffccec"}
    isExpDistCorrection={false}
/>

where isExpDistCorrection={false} disables any exponential distance between icons making it homogeneous.

Custom angle gap to disable exponential distance correction near the vertical axis

<ReactNativeRingPicker
    icons={[
        <PaymentCard id={"payments"} title={"Your payments"}/>,
        <Profile/>,
        <Search title={"find"} color={"#F88DFF"}/>,
        <Family/>,
        <Health title={"Activity"}/>
    ]}
    girthAngle={120}
    onPress={(iconId) => setChosenId(iconId)}
    style={{flex: 0, marginTop: 0}}
    defaultIconColor={"#ffccec"}
    noExpDistCorrectionDegree={5}
/>

where noExpDistCorrectionDegree={5} sets the range of 265°-275° where no exponential distance correction is applied, this creates visual effect of icons stacking near the vertical axis.