React Native 通告消息竖向轮播组件的封装

网络编程 2024/11/13 佚名

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本文实例为大家分享了React Native通告消息竖向轮播组件的封装代码，供大家参考，具体内容如下

import React, {Component} from 'react'
import {
 Text,
 View,
 Animated,
 Easing,
 StyleSheet,
} from 'react-native'

export default class ScrollVertical extends Component {
 static defaultProps = {
  enableAnimation: true,
 };

 constructor(props) {
  super(props)
  let translateValue= new Animated.ValueXY({x: 0, y: 0})
  translateValue.addListener(({x,y})=>{
   // Log('value',x,y)
  })
  this.state = {
   translateValue: translateValue,
   // 滚屏高度
   scrollHeight: this.props.scrollHeight || 32,
   // 滚屏内容
   kb_content: [],
   // Animated.View 滚动到的 y轴坐标
   kb_tempValue: 0,
   // 最大偏移量
   kb_contentOffsetY: 0,
   // 每一次滚动切换之前延迟的时间
   delay: this.props.delay || 500,
   // 每一次滚动切换的持续时间
   duration: this.props.duration || 500,
   enableAnimation: true,
  }
 }

 render() {
  return (
   <View style={[styles.kbContainer, {height: this.state.scrollHeight}, this.props.kbContainer]}>
    {
     this.state.kb_content.length !== 0 "htmlcode">

import React, {Component} from 'react';
import {
 StyleSheet,
 View,
 TouchableOpacity,
 Alert,
 ScrollView,
 ART,
 TouchableHighlight,
 ListView,
 Dimensions,
 Text
} from 'react-native';

import ScrollVertical from '../../app-widget/scroll-vertical'


const dataArray = [
 {
  title: '降价了',
 },
 {
  title: '全场五折',
 },
 {
  title: '打到骨折',
 }
]
export default class extends React.Component {

 render() {
  let array = [{ content: '' }];
  if (dataArray && dataArray.length > 0) {
   array = [];
   for (let item of dataArray) {
    array.push({ content: item.title});
   }
  }
  return (
   <View style={{ padding: Constant.sizeMarginDefault, paddingBottom: 0, backgroundColor: '#FFFFFF' }}>
    <TouchableOpacity onPress={() => {
     if (dataArray && dataArray.length > 0) {
      Log(dataArray[this.index].title)
     }
    }} style={{ flexDirection: 'row', backgroundColor: "#FFFFFF", alignItems: 'center', borderRadius: 8, paddingLeft: 5, paddingRight: 5 }}>
     <Text style={{ fontSize: Constant.scaleFontSize(14) }} fontWeight={'bold'}>公告</Text>
     <View style={{ marginLeft: 5, marginRight: 8, backgroundColor: '#b01638', borderRadius: 8, width: 22, alignItems: 'center', }}>
      <Text style={{ color: 'white', fontSize: Constant.fontSizeSmall }}>新</Text>
     </View>
     <View style={{ flexDirection: 'row', flex: 1 }}>
      <ScrollVertical
       onChange={(index => {
        this.index = index;
       })}
       enableAnimation={true}
       data={array}
       delay={2500}
       duration={1000}
       scrollHeight={34}
       scrollStyle={{ alignItems: 'flex-start' }}
       textStyle={{ color: Constant.colorTxtContent, fontSize: Constant.fontSizeSmall }} />
     </View>
     <View style={{ height: 14, width: 1, backgroundColor: Constant.colorTxtContent }} />
     <Text style={{ color: Constant.colorTxtContent, paddingLeft: Constant.sizeMarginDefault, fontSize: Constant.fontSizeSmall }}>查看</Text>
    </TouchableOpacity>
   </View>
  );

 }
};




以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。