React Native 继续学习

时间：2017-07-11 09:43:34 阅读：634 评论：0 收藏：0 [点我收藏+]

标签：iss ref 使用 space position dede ide 组合 styles

下一个项目公司也打算使用react native.大致看了下原型设计,写几个小demo先试试水.特此记录下.

1.微信及朋友圈分享.QQ及朋友圈分享,微博分享,微信支付,支付宝支付.

2.导航条渐隐

3.通讯录

4.卡片式轮播

5.时间轴

6.图片+列表的组合效果

7.图片下拉放大

8.原生视频播放器

9.react-navigation的使用和变更

......

1.微信及朋友圈分享,微信支付: https://github.com/yorkie/react-native-wechat

QQ分享:https://github.com/reactnativecn/react-native-qq

微博分享: https://github.com/reactnativecn/react-native-weibo

支付宝支付没有找到,只能跳转原生进行支付,

2.导航条渐隐,该项目我们打算使用react-navigation,但是该库的导航条使用不了渐隐,于是只能在需要导航条渐隐的地方,改用自己定义的导航条.

基本代码如下:

  1 /**
  2  * Created by shaotingzhou on 2017/5/9.
  3  */
  4 import React, { Component } from ‘react‘;
  5 import {
  6     AppRegistry,
  7     StyleSheet,
  8     Text,
  9     View,
 10     Image,
 11     TouchableOpacity,
 12     Platform,
 13     Dimensions,
 14     RefreshControl,
 15     FlatList,
 16     ActivityIndicator,
 17     ScrollView,
 18     TextInput
 19 } from ‘react-native‘;
 20 var {width,height} = Dimensions.get(‘window‘);
 21 var dataAry = []
 22 var start  = 0
 23 
 24 export default class OneDetailsFlat extends Component{
 25     //返回首页方法需要修改react-navigation库的源码.修改方法见:http://www.jianshu.com/p/2f575cc35780
 26     static navigationOptions = ({ navigation }) => ({
 27         header:null,
 28         title: ‘FlatList‘,
 29         headerStyle:{backgroundColor:‘rgba(255,255,255,0.0)‘},
 30         headerTintColor: ‘black‘,
 31         headerLeft:(
 32             <Text onPress={()=>navigation.goBack("Tab")}>返回首页</Text>
 33         ),
 34     })
 35 
 36     // 构造
 37     constructor(props) {
 38         super(props);
 39         // 初始状态
 40         for(start = 0;start<20;start++){
 41             var obj = {}
 42             obj.key = start
 43             dataAry.push(obj)
 44         }
 45 
 46         this.state = {
 47             opacity:0,
 48             dataAry: dataAry,
 50         };
 51     }
 52     render() {
 53         return (
 54             <View>
 55                 <FlatList
 56                     onScroll = {(e)=>{this.onScroll(e)}}
 57                     data = {this.state.dataAry}
 58                     renderItem = {(item) => this.renderRow(item)}
 59                 />
 60                 <View style={{width:width,height:69,alignItems:‘center‘,flexDirection:‘row‘,position:‘absolute‘,top:0,backgroundColor:‘rgba(122,233,111,‘ + this.state.opacity + ‘)‘}}>
 61                     <Text style={{width:60,color:‘red‘}} onPress={()=>this.props.navigation.goBack(null)}>返回</Text>
 62                 </View>
 63             </View>
 64         );
 65     }
 66 
 67     //listView的renderRow
 68     renderRow =(item) =>{
 69             return(
 70                 <View style={{flexDirection:‘row‘,marginTop:5,marginLeft:5,borderWidth:1,marginRight:5,borderColor:‘#DEDEDE‘,backgroundColor:‘white‘}}>
 71                     <Image source={require(‘../image/one_selected.png‘)} style={{width:60,height:60,borderRadius:30,marginTop:5,marginBottom:5}}/>
 72                     <View style={{flexDirection:‘column‘,justifyContent:‘space-around‘,marginLeft:5}}>
 73                         <Text style={{fontSize:16}}>歌名: 彩虹彼岸</Text>
 74                         <View style={{flexDirection:‘row‘}}>
 75                             <Text style={{fontSize:14,color:‘#BDBDBD‘}}>歌手:虚拟歌姬</Text>
 76                             <Text style={{fontSize:14,color:‘#BDBDBD‘,marginLeft:10}}>专辑:react native</Text>
 77                         </View>
 78                     </View>
 79                 </View>
 80             )
 81     }
 82     onScroll =(e) =>{
 83         let y = e.nativeEvent.contentOffset.y;
 84         if(y < 10 ){
 85             this.setState({
 86                 opacity:0
 87             })
 88         }else if( y <= 69 && y>= 10){
 89             console.log(y/100)
 90             this.setState({
 91                 opacity:y/100
 92             })
 93         }else {
 94             this.setState({
 95                 opacity:1
 96             })
 97          }
 98     }
 99 
100 };
101 
102 var styles = StyleSheet.create({
103     container: {
104         flex: 1,
105         backgroundColor: ‘#F5FCFF‘,
106     },
107     welcome: {
108         fontSize: 20,
109         textAlign: ‘center‘,
110         margin: 10,
111     },
112     instructions: {
113         textAlign: ‘center‘,
114         color: ‘#333333‘,
115         marginBottom: 5,
116     }
117 });

技术分享

3.通讯录采用三方库即可满足.https://github.com/sunnylqm/react-native-alphabetlistview

4.卡片式轮播采用三方库即可满足.https://github.com/archriss/react-native-snap-carousel

5.时间轴效果. 该效果采用FlatList打造即可.

  1 /**
  2  * Created by shaotingzhou on 2017/7/10.
  3  */
  4 import React, { Component } from ‘react‘;
  5 import {
  6     AppRegistry,
  7     StyleSheet,
  8     Text,
  9     View,
 10     FlatList,
 11     Dimensions,
 12     Image
 13 } from ‘react-native‘;
 14 var {width,height} = Dimensions.get(‘window‘);
 15 var dataAry = []
 16 import data from ‘./data.json‘
 17 export default class TimerShaft extends Component {
 18     // 构造
 19     constructor(props) {
 20         super(props);
 21         // 初始状态
 22         this.state = {
 23             dataAry: dataAry,
 24         };
 25     }
 26 
 27     render() {
 28         return (
 29             <View style={{marginTop:30}}>
 30             <FlatList
 31                 data = {this.state.dataAry}
 32                 renderItem = {(item) => this.renderRow(item)}
 33                 keyExtractor={this.keyExtractor}
 34             />
 35             <View style={{width:1,height:height,backgroundColor:‘red‘,position:‘absolute‘,left:50}}></View>
 36             </View>
 37         );
 38     }
 39 
 40     renderRow =(item) =>{
 41         if(item.item.text){
 42             return(
 43                 <View style={{marginBottom:10,marginLeft:60}}>
 44                     <Text>{item.item.text}</Text>
 45                 </View>
 46             )
 47         }else{
 48             return(
 49                 <View style={{flexDirection:‘row‘,marginBottom:10}}>
 50                     {/*左边*/}
 51                     <View style={{width:60,marginBottom:10}}>
 52                         <View style={{flexDirection:‘row‘,alignItems:‘center‘}}>
 53                             <Text>{item.item.time}</Text>
 54                             <View style={{width:10,height:10,borderRadius:5,backgroundColor:‘red‘,position:‘absolute‘,left:45}}></View>
 55                         </View>
 56                     </View>
 57                     {/*右边*/}
 58                     <View style={{backgroundColor:"#F2F2F2",marginLeft:5,width:width-70}} onLayout = {(event)=>this.onLayout(event)} >
 59                         <Text style={{}}>{item.item.content}</Text>
 60                         <View style={{flexDirection:‘row‘,flexWrap:‘wrap‘}}>
 61                             {this.renderImg(item.item.image)}
 62                         </View>
 63                     </View>
 64                 </View>
 65             )
 66 
 67         }
 68 
 69 
 70 
 71     }
 72 
 73     keyExtractor(item: Object, index: number) {
 74         return item.id
 75     }
 76 
 77     onLayout = (event)=>{
 78         this.setState({
 79             lineHeight:event.nativeEvent.layout.height
 80         })
 81 
 82     }
 83 
 84     renderImg = (imgAry) =>{
 85         var renderAry = []
 86         for(var i = 0;i < imgAry.length; i++){
 87             if(imgAry.length == 1){ //只有一张图片,拿原图
 88                 renderAry.push(
 89                     <Image key={i} source={{uri:imgAry[0].url}} style={{width:200,height:200}}/>
 90                 )
 91             }else if(imgAry.length == 2 || imgAry.length == 4){
 92                 renderAry.push(
 93                     <Image key={i} source={{uri:imgAry[i].url}} style={{width:(width-70)*0.5-2,height:(width-70)*0.5-2,marginLeft:1,marginTop:1}}/>
 94                 )
 95             }else {
 96                 renderAry.push(
 97                     <Image key={i} source={{uri:imgAry[i].url}} style={{width:(width-70)/3-2,height:(width-70)/3-2,marginLeft:1,marginTop:1}}/>
 98                 )
 99             }
100         }
101 
102         return renderAry
103     }
104 
105     componentDidMount() {
106         this.setState({
107             dataAry:data
108         })
109     }
110 }
111 
112 const styles = StyleSheet.create({
113     container: {
114         flex: 1,
115         justifyContent: ‘center‘,
116         alignItems: ‘center‘,
117         backgroundColor: ‘#F5FCFF‘,
118     },
119     welcome: {
120         fontSize: 20,
121         textAlign: ‘center‘,
122         margin: 10,
123     },
124     instructions: {
125         textAlign: ‘center‘,
126         color: ‘#333333‘,
127         marginBottom: 5,
128     },
129 });

技术分享

6.图片+列表的组合效果

该效果采用ScrollView包含两个FlatList和一个ListView完成(ps:第三个横向的cell的单独使用FlatList可以,但是和其他组件搭配就错误.....)

  1 /**
  2  * Created by shaotingzhou on 2017/7/6.
  3  */
  4 /**
  5  * Sample React Native App
  6  * https://github.com/facebook/react-native
  7  * @flow
  8  */
  9 
 10 import React, { Component } from ‘react‘;
 11 import {
 12     AppRegistry,
 13     StyleSheet,
 14     Text,
 15     View,
 16     ScrollView,
 17     Dimensions,
 18     FlatList,
 19     SectionList,
 20     Image,
 21     ListView
 22 } from ‘react-native‘;
 23 var {width,height} = Dimensions.get(‘window‘);
 24 var dataAry = []
 25 var dataAryOne = []
 26 var dataAryTwo = []
 27 var ds = new ListView.DataSource({rowHasChanged:(r1,r2)=> r1 !== r2});
 28 
 29 export default class Main extends Component {
 30     // 构造
 31     constructor(props) {
 32         super(props);
 33         // 初始状态
 34         for(var i = 0;i<100;i++){
 35             var obj = {}
 36             obj.key = i
 37             dataAry.push(obj)
 38         }
 39 
 40         // 初始状态
 41         for(var i = 0;i<10;i++){
 42             var obj = {}
 43             obj.key = i
 44             dataAryOne.push(obj)
 45         }
 46 
 47         // 初始状态
 48         for(var i = 0;i<5;i++){
 49             var obj = {}
 50             obj.key = i
 51             dataAryTwo.push(obj)
 52         }
 53 
 54         this.state = {
 55             index:1,
 56             dataAry: dataAry,
 57             dataAryOne:dataAryOne,
 58             dataSource:ds.cloneWithRows(dataAryTwo)
 59         };
 60     }
 61 
 62     render() {
 63         return (
 64             <View style={{flex:1}}>
 65                 <View style={{backgroundColor:‘cyan‘,height:69,justifyContent:‘center‘,alignItems:‘center‘}}>
 66                     <Text>导航条</Text>
 67                 </View>
 68                 <ScrollView
 69                     style={{flex:1}}
 70                     stickyHeaderIndices = {[1]}
 71                 >
 72 
 73                     <Image source={require(‘./1.gif‘)} style={{width:width,height:200}} />
 74 
 75                     <View style={{backgroundColor:‘yellow‘}}>
 76                         <View style={{flexDirection:‘row‘,justifyContent:‘space-around‘,marginTop:20}}>
 77                             <Text onPress={()=>{this.onClickOne()}} style={{color:this.state.index == 1 ? ‘red‘ : ‘cyan‘}}>11111</Text>
 78                             <Text onPress={()=>{this.onClickTwo()}} style={{color:this.state.index == 2 ? ‘red‘ : ‘cyan‘}}>22222</Text>
 79                             <Text onPress={()=>{this.onClickThree()}} style={{color:this.state.index == 3 ? ‘red‘ : ‘cyan‘}}>33333</Text>
 80                         </View>
 81                     </View>
 82 
 83                     {this.bottomViewRender()}
 84 
 85                 </ScrollView>
 86 
 87             </View>
 88         );
 89     }
 90     bottomViewRender = ()=>{
 91         if(this.state.index == 1){
 92             return(
 93                 <FlatList
 94                     data = {this.state.dataAry}
 95                     renderItem = {(item) => this.renderRow(item)}
 96                 />
 97             )
 98         }else if(this.state.index == 2){
 99             return(
100                 <FlatList
101                     data = {this.state.dataAryOne}
102                     renderItem = {(item) => this.renderRowOne(item)}
103                 />
104             )
105         }else {
106             //这里横向只能使用ListView或者SctionList.FLatList设置横向属性报错
107             return(
108                 <ListView
109                     dataSource={this.state.dataSource}
110                     renderRow={this.renderRowTwo}
111                     contentContainerStyle={styles.listViewStyle}
112                 />
113             )
114         }
115 
116     }
117 
118 
119     onClickOne =()=>{
120         this.setState({
121             index:1,
122         })
123     }
124     onClickTwo =()=>{
125         this.setState({
126             index:2,
127         })
128     }
129     onClickThree =()=>{
130         this.setState({
131             index:3,
132         })
133     }
134 
135 
136     renderRow =(item) =>{
137         return(
138             <View style={{flexDirection:‘row‘,marginTop:5,marginLeft:5,borderWidth:1,marginRight:5,borderColor:‘#DEDEDE‘,backgroundColor:‘white‘}}>
139                 <View style={{flexDirection:‘column‘,justifyContent:‘space-around‘,marginLeft:5}}>
140                     <Text style={{fontSize:16}}>歌名: 彩虹彼岸</Text>
141                     <View style={{flexDirection:‘row‘}}>
142                         <Text style={{fontSize:14,color:‘#BDBDBD‘}}>歌手:虚拟歌姬</Text>
143                         <Text style={{fontSize:14,color:‘#BDBDBD‘,marginLeft:10}}>专辑:react native</Text>
144                     </View>
145                 </View>
146             </View>
147         )
148 
149     }
150 
151     renderRowOne =(item) =>{
152         return(
153             <View style={{flexDirection:‘row‘,marginTop:5,marginLeft:5,borderWidth:1,marginRight:5,borderColor:‘#DEDEDE‘,backgroundColor:‘white‘}}>
154                 <View style={{flexDirection:‘row‘}}>
155                     <Text style={{fontSize:14,color:‘#BDBDBD‘}}>歌手:虚拟歌姬</Text>
156                     <Text style={{fontSize:14,color:‘#BDBDBD‘,marginLeft:10}}>专辑:react native</Text>
157                 </View>
158             </View>
159         )
160 
161     }
162 
163     renderRowTwo(rowData){
164         return(
165                 <View style={styles.innerViewStyle}>
166                     <Image source={require(‘./2.jpeg‘)} style={{width:150,height:150}} />
167                     <Text>你的名字</Text>
168                 </View>
169         );
170     }
171     //
172     // renderRowTwo =(item) =>{
173     //
174     //     return (
175     //         <View>
176     //             {
177     //                 dataAryTwo.map(function (item, i) {
178     //                 return (
179     //                     <View style={{marginLeft:5}} key={i}>
180     //                         <Image source={require(‘./2.jpeg‘)} style={{width:150,height:150}} />
181     //                         <Text>你的名字</Text>
182     //                     </View>
183     //                 );
184     //             })
185     //             }
186     //         </View>
187     //     )
188     // }
189 
190 
191 }
192 
193 const styles = StyleSheet.create({
194     container: {
195         flex: 1,
196         justifyContent: ‘center‘,
197         alignItems: ‘center‘,
198         backgroundColor: ‘#F5FCFF‘,
199     },
200     welcome: {
201         fontSize: 20,
202         textAlign: ‘center‘,
203         margin: 10,
204     },
205     instructions: {
206         textAlign: ‘center‘,
207         color: ‘#333333‘,
208         marginBottom: 5,
209     },
210     listViewStyle:{
211         //改变主轴方向
212         flexDirection:‘row‘,
213         //多行显示
214         flexWrap:‘wrap‘
215     },
216 });