爱凉拌菜真是太好了

react-native学习日记之ListView二

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用listView实现九宫格效果

这次时照着es6的写法写的，es6和es5的写法有很多地方不一样
效果图

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import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  ListView,
  TouchableOpacity,
  Image
} from 'react-native';
import Dimensions from 'Dimensions';
const listData = [
  {
    src:'a', desc:'第一张'
  },
  {
    src:'b', desc:'第二张'
  },
  {
    src:'c', desc:'第三张'
  },
  {
    src:'d', desc:'第四张'
  },
  {
    src:'e', desc:'第五张'
  },
  {
    src:'b', desc:'第二张'
  },
  {
    src:'c', desc:'第三张'
  },
  {
    src:'d', desc:'第四张'
  },
  {
    src:'e', desc:'第五张'
  }
];
// 获取屏幕宽高
var {width,height} = Dimensions.get('window');
var cols = 3; //3列
var cellWidth = 100,cellHeight = 100;
var vMargin = (width-cols*cellWidth)/(cols+1); //九宫格横向margin算法
var hMargin = 20; //九宫格纵向margin
export default class ListViewjiugongge extends Component {
  constructor(props) {
    super(props);
    const ds = new ListView.DataSource({rowHasChanged:(r1,r2)=>r1!==r2});
    this.state = {
      dataSource: ds.cloneWithRows(listData)
    }
  }
  render() {
    return (
      <ListView
        dataSource={this.state.dataSource}
        renderRow={this.renderRow}
        // renderSeparator={(sectionID,rowID,adjacentRowHighlighted)=>{
        //   console.log(sectionID,rowID,adjacentRowHighlighted);
        //   return(
        //     <View key={`${sectionID}-${rowID}`}
        //       style={{height:90,width:1,backgroundColor:adjacentRowHighlighted?'blue':'red'}}
        //       ></View>
        //   )
        // }}
        contentContainerStyle={styles.listViewStyle}
        />
    );
  }
  renderRow(owData,sectionID,rowID,highlightRow) {
    return(
      <TouchableOpacity activeOpacity={0.5} onPress={()=>{highlightRow(sectionID,rowID)}}>
        <View style={styles.cellViewStyle}>
          {/*图片src*/}
          <Image source={{uri:owData.src}} style={{width:100,height:100,borderRadius:50}}/>
        </View>
      </TouchableOpacity>
    )
  }
}
const styles = StyleSheet.create({
  listViewStyle: {
    flexDirection:'row',
    flexWrap:'wrap',
    alignItems:'flex-start'
  },
  cellViewStyle: {
    marginLeft:vMargin,
    marginTop: hMargin
  },
  descStyle: {
    // flexDirection:'row',
    // alignItems:'center'
  }
});
AppRegistry.registerComponent('ListViewjiugongge', () => ListViewjiugongge);