React+dva+webpack+antd-mobile 实战分享（二）

摘要：第一篇在上一篇文章中教给大家了怎么搭建项目的架子那么今天我们就来说一下项目里的导航和列表的实现导航废话不说啦下面直接给大家讲一下代码项目用的的框架应该没什么难度，我相信大家认真看文档的都能布局出来这个地方是封装的请求请求过来的数据全部存

第一篇 https://segmentfault.com/a/11...

在上一篇文章中教给大家了怎么搭建项目的架子；那么今天我们就来说一下项目里的导航和列表的实现

废话不说啦 下面直接给大家讲一下代码
项目用的antd-mobile的框架 应该没什么难度，我相信大家认真看文档的都能布局出来；

TabButton.js

import React, { Component } from "react";
import { Tabs, WhiteSpace,ListView,Toast} from "antd-mobile";
import { routerRedux } from "dva/router";
import { connect } from "dva";
import Request from "../common/fetch"
import {width,height} from "../common/style";

const TabPane = Tabs.TabPane;

class TabButton extends Component {
  constructor(props) {
    super(props);
    this.state = {
      channels: []
    }
  }
 
  componentDidMount() {
  // 这个地方是封装的fetch请求；
    Request("/api/article/channel",{
      secret:1111,
    },((res) => {
      this.setState({
        channels: res.result.channels
      })
      // 请求过来的数据全部存下来，以便后期调用，同时可以减少请求
      this.props.dispatch({
        type: "indexList/TabData",
        payload: res.result.channels,
      });
    }))
  }
//这个点需要注意：此处是将click事件传递给子组件，另一界面 就可以取到此组件传递过去的click事件；
  _handleTabClick(key){
    this.props.ButtonClick(key);
  }

  _renderList() {
    let result = [];
    const channels = this.state.channels;
    for(let i in channels) {
      if(channels[i].attval == 1 || channels[i].attval == 2){
        result.push(
          
            

            
          
        )
      }
    }
    return result
  }

  _getMore() {
    this.props.dispatch(
      routerRedux.push("/moreChannel")
    )
  }

  render() {
    return(
      

         {this._handleTabClick(key)}}
              swipeable = {false}
          >
          {this._renderList()}
        
        
 this._getMore()}>
          
        
      
    )
  }
}

const styles = {
  moreChannel:{
    position:"absolute",
    top:0,
    right:-width/7,
    zIndex:9999,
    width:width/7,
    height:42,
    backgroundColor:"#fff",
    alignItems:"center",
    justifyContent:"center"
  }
}


function indexList({indexList}) {
  return { indexList };
}

export default connect(indexList)(TabButton);

fetch.js

export default function Request(url,body,callback){
  fetch(url,{
    method: "POST",
    mode: "cors",
    headers: {
      "Content-Type": "application/json",
      "Accept": "application/json"
    },
    body: JSON.stringify(body)
  }).then((res) => res.json()).then((res) => {
    callback(res)
  }).catch((err) => {
    console.log(err)
  })
}

indexTab.js

import React, { Component,PureComponent,PropTypes } from "react";
import { Tabs, WhiteSpace,ListView,Toast} from "antd-mobile";
import { routerRedux } from "dva/router";
import { connect } from "dva";
import ReactPullLoad,{ STATS } from "react-pullload";
import TabButton from "./TabButton";
import {width,height} from "../common/style";

let devicenum = localStorage.getItem("devicenum")
const loadMoreLimitNum = 10;

const defaultStyle ={
  width: "100%",
  textAlign: "center",
  fontSize: "14px",
  lineHeight: "1.5",
  paddingTop:"12px",
  color:"#ccc"
}

class HeadNode extends PureComponent{

  static propTypes = {
    loaderState: PropTypes.string.isRequired,
  };

  static defaultProps = {
    loaderState: STATS.init,
  };

  render(){
    const {
      loaderState
      } = this.props

    let content = ""
    if(loaderState == STATS.pulling){
      content = "下拉刷新"
    } else if(loaderState == STATS.enough){
      content = "松开刷新"
    } else if(loaderState == STATS.refreshing){
      content = "正在刷新..."
    } else if(loaderState == STATS.refreshed){
      content = "刷新成功"
    }

    return(
      

        {content}
      
    )
  }
}


class FooterNode extends PureComponent{
  static propTypes = {
    loaderState: PropTypes.string.isRequired,
    hasMore: PropTypes.bool.isRequired
  };

  static defaultProps = {
    loaderState: STATS.init,
    hasMore: true
  };

  render(){
    const {
      loaderState,
      hasMore
      } = this.props
    let content = ""
    if(loaderState == STATS.loading){
      return(
        

          
          正在加載喔~
        
      )
    } else if(hasMore === false){
      content = "没有更多"
    }

    return(
      

        {content}
      
    )
  }
}


class indexTab extends Component {
  constructor(props) {
    super(props)
    this.state = {
      channels : [],
      channelid : 1,
      showT:false,
      loading : false,
      hasMore: true,
      data: [],
      action: STATS.init,
      index: loadMoreLimitNum,
      newsLength:""
    }
  }

  componentDidMount() {
    this.getListData(this.state.channelid);
  }

  getListData(channelid) {
    // List
    fetch("/api/article",{
      method: "POST",
      mode: "cors",
      headers: {
        "Content-Type": "application/json",
        "Accept": "application/json"
      },
      body: JSON.stringify({
        channelID: channelid,
        type: 0,
        pageSize: 10,
        dt : 2,
        action: 1,
        devicenum:devicenum
      })
    }).then((res) => res.json()).then((res) => {
      this.setState({
        data: res.result.news,
        newsLength:res.result.news.length
      })
      this.props.dispatch({
        type: "indexList/detailData",
        payload: res.result.news,
      });
    }).then(() => {
      setTimeout(() => {
        this.setState({
          showT : true
        })
      },1900)
    }).then(() => {
      setTimeout(() => {
        this.setState({
          showT : false
        })
      },2900)
    }).catch((err) => {
      console.log(err)
    })
  }

  handleAction = (action) => {
    console.info(action, this.state.action,action === this.state.action);
    if(action === this.state.action){
      return false
    }
    if(action === STATS.refreshing){//刷新
      this.handRefreshing();
    } else if(action === STATS.loading){
      this.handLoadMore();
    } else{
      this.setState({
        action: action
      })
    }
  }
  handRefreshing = () =>{
    if(STATS.refreshing === this.state.action){
      return false
    }
    this.getListData(this.state.channelid)
    setTimeout(()=>{
      this.setState({
        action: STATS.refreshed,
        index: loadMoreLimitNum
      });
    }, 3000)

  }
  handLoadMore = () => {
    if(STATS.loading === this.state.action){
      return false
    }
    setTimeout(()=>{
      if(this.state.index === 0){
        this.setState({
          action: STATS.reset,
          hasMore: false
        });
      } else{
        fetch("/api/article",{
          method: "POST",
          headers: {
            "Content-Type": "application/json;charset=UTF-8",
            "Accept": "application/json"
          },
          body: JSON.stringify({
            channelID: this.state.channelid,
            type: 0,
            pageSize: 10,
            dt : 2,
            action: 1,
            devicenum:devicenum
          })
        }).then((res) => res.json()).then((res) => {
          this.setState({
            data: [...this.state.data,...res.result.news],
              action: STATS.reset,
              index: this.state.index - 1
          })
          this.props.dispatch({
            type: "indexList/detailData",
            payload: [...this.state.data,...res.result.news],
          });
        }).then(() => {
          console.log(this.state.showT)
          setTimeout(() => {
            this.setState({
              showT : true
            })
          },1900)
        }).then(() => {
          setTimeout(() => {
            this.setState({
              showT : false
            })
          },2900)
        }).catch((err) => {
          console.log(err)
        })
      }
    }, 3000)
    this.setState({
      action: STATS.loading
    })
  }

  //跳转到详情页
  _routerDetail(index) {
    localStorage.setItem("detailid",index)
    this.props.dispatch(
      routerRedux.push(`/detail/${index}`)
    )
  }

  //Tab 切换重新调取
  ButtonClick(key) {
    this.getListData(key);
    this.setState({
      channelid:key
    })
  }

  _renderShow() {
    if(this.state.showT == true){
      if(this.state.newsLength != 0){
        return(
          
更新了{this.state.newsLength}条内容
        )
      }else{
        return(
          
暂無更新推送
        )
      }
    }else{
      return(
        

      )
    }
  }

  render(){
    const {data,hasMore} = this.state
    return (
      

        
        

        
          

            {
              data.map( (str, index )=>{
                if(str.images[0] != ""){
                  return 

                    
 this._routerDetail(index)}>
                      
                      
{str.title}
                      
{str.source} | {str.publishTime}
                    
                  
                }else{
                  return 

                    
 this._routerDetail(index)}>
                      
{str.title}
                      
{str.source} | {str.publishTime}
                    
                  
                }
              })
            }
          
        
        

        
        {this._renderShow()}
      
    )
  }

}


const styles = {
  more: {
    width:width,
    backgroundColor:"#FFDB01",
    position:"absolute",
    zIndex:9999,
    top:86,
    textAlign:"center",
    padding:5,
    fontSize:14,
    display:"block",

  },
  news: {
    padding:15,
    justifyContent:"center",
    alignItems:"center"
  },
  imgStyle: {
    width:width-30,
    //height:100
  },
  newsTitle: {
    fontSize:18,
    marginTop:10,
    marginBottom:10
  },
  moreTab: {
    width:width-(width/7)*6,
    height:43,
    backgroundColor:"#fff",
    position: "absolute",
    justifyContent:"center",
    alignItems:"center",
    top:44,
    right:0,
    zIndex:9999
  }
}
function indexList({ indexList }) {
  return { indexList };
}
export default connect(indexList)(indexTab);

好啦 上述就是整个首页的主要代码，知道如何创建项目的你们可以尝试啦～～～