@cqfw/react-native-pull-to-refresh

react-native-pull-to-refresh（ios/android）

A pull to refresh component for react-native, same api on both android and ios,also you can design you owner pull style for this component.you can use it for most of the component in react-native such as view,scrollview,listview and flatlist.

Preview

Installation

npm install @cqfw/react-native-pull-to-refresh --save

How to use

it contains PullView,PullScrollView,PullListView and PullFlatList.if you want to use PullFlatList,you should use this component whith React Native 0.43 and newer.then you must add this to FlatList(node_modules/react-native/Libraries/Lists/FlatList.js)

...
getScrollMetrics = () => {
    return this._listRef.getScrollMetrics()
}
...

and add this to VirtualizedList(node_modules/react-native/Libraries/Lists/VirtualizedList.js)

...
 getScrollMetrics = () => {
    return this._scrollMetrics
 }
 ...

Use it for Listview with default style

import React, {PureComponent} from 'react';
import {ListView, View, Text, Dimensions} from 'react-native';
import {PullListView} from '@cqfw/react-native-pull-to-refresh'

const width = Dimensions.get('window').width

export default class PullListViewDemo extends PureComponent {

    constructor(props) {
        super(props);
        this.dataSource =
            new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2}).cloneWithRows(this.getDataSource())
    }

    getDataSource = () => {
        let array = new Array();
        for (let i = 0; i < 50; i++) {
            array.push(`ListViewItem:${i + 1}`);
        }
        return array;
    }

    render() {
        return (
            <PullListView
                ref={(c)=>this.pull=c}
                isContentScroll={true}
                style={{flex: 1, width: width}}
                onPushing={this.props.onPushing}
                onPullRelease={this._onPullRelease}
                dataSource={this.dataSource}
                renderRow={this._renderRow}/>
        )
    }

    _onPullRelease = () => {
        setTimeout(() => {
            this.pull && this.pull.resolveHandler()
        }, 2000)
    }

    _renderRow = (rowData) => {
        return (
            <View style={{flex: 1, height: 50, justifyContent: 'center', alignItems: 'center'}}>
                <Text>{rowData}</Text>
            </View>);
    }

    componentDidMount() {
        this.pull && this.pull.beginRefresh()
    }
}

Use it for View with you owner style

import React, {PureComponent} from 'react';
import {View, Text, Dimensions,StyleSheet,ActivityIndicator} from 'react-native';
import {PullView} from '@cqfw/react-native-pull-to-refresh'

const width = Dimensions.get('window').width
const topIndicatorHeight = 50

export default class PullViewDemo extends PureComponent {

    render() {
        return (
            <PullView
                ref={(c) => this.pull = c}
                style={{flex: 1, width: width}}
                topIndicatorRender={this.topIndicatorRender}
                topIndicatorHeight={topIndicatorHeight}
                onPullStateChangeHeight={this.onPullStateChangeHeight}
                onPushing={this.props.onPushing}
                onPullRelease={this._onPullRelease}>

                <Text style={{flex: 1, width: width, paddingTop: 200, textAlign: 'center'}}>这是内容</Text>

            </PullView>
        )
    }

    onPullStateChangeHeight = (pulling, pullok, pullrelease, moveHeight) => {
        if (pulling) {
            this.txtPulling && this.txtPulling.setNativeProps({style: styles.show});
            this.txtPullok && this.txtPullok.setNativeProps({style: styles.hide});
            this.txtPullrelease && this.txtPullrelease.setNativeProps({style: styles.hide});
        } else if (pullok) {
            this.txtPulling && this.txtPulling.setNativeProps({style: styles.hide});
            this.txtPullok && this.txtPullok.setNativeProps({style: styles.show});
            this.txtPullrelease && this.txtPullrelease.setNativeProps({style: styles.hide});
        } else if (pullrelease) {
            this.txtPulling && this.txtPulling.setNativeProps({style: styles.hide});
            this.txtPullok && this.txtPullok.setNativeProps({style: styles.hide});
            this.txtPullrelease && this.txtPullrelease.setNativeProps({style: styles.show});
        }
    }


    topIndicatorRender = () => {
        return (
            <View style={{flexDirection: 'row', justifyContent: 'center', alignItems: 'center', height: topIndicatorHeight}}>
                <ActivityIndicator size="small" color="gray" style={{marginRight: 5}}/>
                <Text ref={(c) => {this.txtPulling = c;}} style={styles.hide}>pulling...</Text>
                <Text ref={(c) => {this.txtPullok = c;}} style={styles.hide}>pullok...</Text>
                <Text ref={(c) => {this.txtPullrelease = c;}} style={styles.hide}>pullrelease...</Text>
            </View>
        );
    }


    _onPullRelease = () => {
        setTimeout(() => {
            this.pull && this.pull.resolveHandler()
        }, 2000)
    }

    componentDidMount() {
        this.pull && this.pull.beginRefresh()
    }
}

const styles = StyleSheet.create({
    hide: {
        position: 'absolute',
        left: 10000,
        backgroundColor: 'transparent'
    },
    show: {
        position: 'relative',
        left: 0,
        backgroundColor: 'transparent'
    }
});

Full Demo

clone or download PullToRefreshDemo

Props

Porp	Type	Optional	Default	Description
refreshable	bool	yes	true	can pull to refresh or not
isContentScroll	bool	yes	false	content scroll when pulling
onPullRelease	func	yes		when refreshing, this function will be called
topIndicatorRender	func	yes		top pulling render for this component,when the value is undefined,this component use default top pulling render
topIndicatorHeight	number	yes		top pulling render header,when topIndicatorRender is not undefined,you must set the correct topIndicatorHeight
onPullStateChangeHeight	func	yes		when pulling, this function will be called
onPushing	func	yes		when pulling, this function will be called

Method

beginRefresh():force begin pull down refresh
resolveHandler():end pull down refresh