CourseList.js
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/**
* Created by Cassie on 2018/05/14
* 公共的图文列表页面
*/
import React, {Component} from "react";
import {ActivityIndicator, Image,DeviceEventEmitter,Text, FlatList, StyleSheet, View,TextInput} from "react-native";
import {xnToast} from "../../utils/utils";
import AppService from "../../service/AppService";
import {width, zoomH, zoomW} from "../../utils/getSize";
import EmptyView from '../component/EmptyView';
import CourseListItem from "../course/CourseListItem";
const defaultIcon = require("../../img/defaultIcon.png");
const pageSize = 20;
{
var arr_keyValue;
}
export default class CourseList extends Component {
constructor(props) {
super(props);
this.state = {
data: [],
showMoreText: [],
loadMore: false,
loading: false,
totalCount:0,
refreshing: false,
showEmptyView:false,//是否显示暂无数据,
allList:[],
showList:[],
keyWord:''
};
}
componentWillMount() {
let arr_keyValue = this.props.arr_keyValue;
for (var key in arr_keyValue) {
var obj = arr_keyValue[key];
for (var key1 in obj) {
if (key1 == 'tabIndex'){
// this.refreshAll = DeviceEventEmitter.addListener(obj[key1], () => {
// this.setState({
// data: [],
// showList: [],
// allList: [],
// loadMore: false
// }, () => {
// this.getList();
// });
// });
}
}
}
this.getList();
}
componentDidMount() {
let _this = this;
//刷新列表 refreshThreadList
// this.refreshHomeList = DeviceEventEmitter.addListener(
// "refreshHomeList",
// function() {
// {
// _this.setState(
// {
// data: [],
// showList: [],
// allList: [],
// loadMore: false
// },
// function() {
// _this.getList();
// }
// );
// }
// }
// );
// this.refreshThreadList = DeviceEventEmitter.addListener(
// "refreshThreadList",
// function() {
// _this.getList();
// }
// )
}
componentWillUnmount() {
// if (this.refreshHomeList != null) {
// this.refreshHomeList.remove();
// }
// if (this.refreshAll != null ){
// this.refreshAll.remove();
// }
}
//获取板块列表信息
getList(from) {
let that = this;
if (!global.isConnected) {
DeviceEventEmitter.emit('getTopicList',{});
xnToast("暂无网络连接，请稍后重试！");
return;
}
if (this.state.loading){
return;
}
let length = this.state.showList.length;
let arr_keyValue = this.props.arr_keyValue;
if (length % pageSize == 0 && !this.state.loadMore) {
let params = {
isActive:true,
pageNumber: length / pageSize + 1,
pageSize: pageSize
};
// 添加前页面自定义的参数
for (var key in arr_keyValue) {
var obj = arr_keyValue[key];
for (var key in obj) {
params[key] = obj[key];
}
}
this.setState({
loadMore: true,
loading:true
});
DeviceEventEmitter.emit('loadShow',{show:true});
console.log('getList',params);
AppService.findCourseRequest(params)
.then(data => {
that.setState({
loading: false,
loadMore: false,
});
DeviceEventEmitter.emit('loadShow',{show:false});
DeviceEventEmitter.emit('getTopicList',{});
if (data.message) {
xnToast(data.message);
return;
}
if (data.errors.length > 0) {
xnToast(data.errors[0].message);
} else {
if (length + data.result.length > data.totalCount) {
return;
}
// let courseListTemp = that.state.courseList;
// courseListTemp = courseListTemp.concat(data.result)
// that.setState({courseList:courseListTemp, totalCount:data.totalCount});
that.setState({
showList: that.state.showList.concat(data.result),
allList: that.state.allList.concat(data.result),
totalCount:data.totalCount,
showEmptyView:data.totalCount>0 ? false:true,
});
}
})
.catch(error => {
that.setState({
loading: false,
loadMore: false,
});
xnToast(error);
});
} else if (length == this.state.totalCount) {
let params = {
isActive:true,
pageSize: 0
// keyword:this.props.triData,
};
// 添加前页面自定义的参数
for (var key in arr_keyValue) {
var obj = arr_keyValue[key];
for (var key in obj) {
params[key] = obj[key];
}
}
this.setState({
loadMore: true,
loading:true
});
DeviceEventEmitter.emit('loadShow',{show:true});
console.log('homeList查询',params);
AppService.findCourseRequest(params)
.then(data => {
that.setState({
loading: false,
loadMore: false,
});
DeviceEventEmitter.emit('getTopicList',{});
DeviceEventEmitter.emit('loadShow',{show:false});
if (data.message) {
xnToast(data.message);
return;
}
if (data.errors.length > 0) {
xnToast(data.errors[0].message);
} else {
that.setState({
showList: data.result,
allList: data.result,
totalCount:data.totalCount,
});
}
})
.catch(error => {
that.setState({
loading: false,
loadMore: false,
});
xnToast(error);
});
}
}
//渲染item
keyExtractor = (item, index) => index;
renderItem({ item, index }) {
return <CourseListItem item={item} nav={this.props.navigation} />;
}
_separator = () => {
return <View style={{ height: 6/zoomH, backgroundColor: "#F3F5F6" }} />;
};
searchData(){
if (this.state.keyWord.length<1){
return;
}
let that = this;
if (!global.isConnected) {
DeviceEventEmitter.emit('getTopicList',{});
xnToast("暂无网络连接，请稍后重试！");
return;
}
if (this.state.loading){
return;
}
this.setState({
loadMore: true,
loading:true,
showList:[]
});
let params = {
isActive:true,
pageSize: 0,
name:this.state.keyWord
};
AppService.findCourseRequest(params)
.then(data => {
that.setState({
loading: false,
loadMore: false,
});
DeviceEventEmitter.emit('loadShow',{show:false});
DeviceEventEmitter.emit('getTopicList',{});
if (data.message) {
xnToast(data.message);
return;
}
if (data.errors.length > 0) {
xnToast(data.errors[0].message);
} else {
that.setState({
showList: data.result,
showEmptyView:data.totalCount>0 ? false:true,
});
}
})
.catch(error => {
that.setState({
loading: false,
loadMore: false,
showList:that.state.allList
});
xnToast(error);
});
}
render() {
return (
<View style={styles.background}>
<View style={styles.search}>
<TextInput style={styles.input} placeholder={'搜索'} returnKeyType='done' underlineColorAndroid="transparent" numberOfLines={1} onChangeText={(text)=>{
this.state.keyWord=text;
if (this.state.keyWord.length<1 ){
this.state.showList=[];
this.setState({
showEmptyView:this.state.showList.length>0 ? false:true,
});
this.getList();
}
}} onSubmitEditing={()=>this.searchData(this.state.keyWord)}></TextInput>
</View>
{this.state.showList && (
<FlatList
style={{ flex: 1, display: "flex" }}
onEndReachedThreshold={0.01}
onEndReached={() => {
this.getList()
}}
keyExtractor={this.keyExtractor}
data={this.state.showList}
ItemSeparatorComponent={this._separator}
renderItem={this.renderItem.bind(this)}
refreshing={this.state.refreshing}
onRefresh={() => {
let _this = this;
this.setState({
refreshing: true
}, () => {
const timer = setTimeout(() => {
clearTimeout(timer);
_this.setState({
refreshing: false,
data: [],
showList: [],
allList: [],
}, () => {
_this.getList();
});
}, 1000);
})}}
/>
)}
{this.state.showList.length > pageSize && this.state.loadMore && (
<ActivityIndicator />
)}
{this.state.showEmptyView &&
<EmptyView />}
</View>
);
}
}
const styles = StyleSheet.create({
background: {
flex: 1,
backgroundColor: "#F3F5F6",
display: "flex"
},
search:{
width:width,
height:44,
justifyContent: 'center',
alignItems: 'center'
},
input:{
paddingLeft: 15,
paddingRight: 15,
paddingTop:0,
paddingBottom:0,
width:width-30,
height:30,
backgroundColor:'#fff',
}
});