DetailBrand.js
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'use strict';
import React from 'react';
import ReactNative from 'react-native';
import Immutable, {Map} from 'immutable';
const {
AppRegistry,
StyleSheet,
Text,
View,
Image,
ListView,
Dimensions,
TouchableOpacity,
} = ReactNative;
export default class DetailBrand extends React.Component {
constructor(props) {
super(props);
this._renderRow = this._renderRow.bind(this);
this.dataSource = new ListView.DataSource({
rowHasChanged: (r1, r2) => r1.key != r2.key,
});
}
shouldComponentUpdate(nextProps){
if (Immutable.is(nextProps.resource, this.props.resource)) {
return false;
} else {
return true;
}
}
_renderRow(rowData, sectionID, rowID) {
let {url} = rowData;
if ((rowID+1)%4 == 0) {
return (
<TouchableOpacity style={styles.lastCell} onPress={()=>{this.props.onPressBrand&&this.props.onPressBrand(url)}}>
<Image style={styles.cellImg} source={{uri:rowData.thumb}}/>
<Text style={styles.cellTitle}>{rowData.name}</Text>
</TouchableOpacity>
);
} else {
return (
<TouchableOpacity style={styles.cell} onPress={()=>{this.props.onPressBrand&&this.props.onPressBrand(url)}}>
<Image style={styles.cellImg} source={{uri:rowData.thumb}}/>
<Text style={styles.cellTitle}>{rowData.name}</Text>
</TouchableOpacity>
);
}
}
render() {
let {data} = this.props.resource.toJS();
if (!data.length) {
return null;
}
return(
<View style={styles.container}>
<View style={styles.headerView}>
<Text style={styles.headerText}>相关品牌</Text>
</View>
<ListView
contentContainerStyle={styles.brandContainer}
enableEmptySections={true}
initialListSize={data.length}
dataSource={this.dataSource.cloneWithRows(data)}
renderRow={this._renderRow}
scrollEnabled={false}
scrollsToTop={false}
horizontal={true}
/>
</View>
);
return null;
}
};
let {width, height} = Dimensions.get('window');
let cellWidth = width/4.0;
let styles = StyleSheet.create({
container: {
backgroundColor: '#f0f0f0',
},
headerView: {
backgroundColor: 'white',
borderColor: 'rgb(215, 215, 215)',
marginLeft: 15,
marginRight: 15,
marginTop: 15,
height: 44,
borderTopWidth: 1,
borderLeftWidth: 1,
borderRightWidth: 1,
},
headerText: {
backgroundColor: 'white',
fontSize: 18,
color: 'rgb(215, 215, 215)',
textAlign: 'center',
paddingTop: 13,
flex: 1,
},
brandContainer: {
backgroundColor: 'white',
borderColor: 'rgb(215, 215, 215)',
borderTopWidth: 1,
borderBottomWidth: 1,
flexDirection: 'row',
flexWrap: 'wrap',
width: width,
paddingBottom: 15,
},
cell: {
width: cellWidth,
height: 75,
backgroundColor: 'white',
marginTop: 15,
flexDirection: 'column',
borderColor: 'rgb(215, 215, 215)',
borderRightWidth: 1,
justifyContent: 'space-between',
},
lastCell: {
width: cellWidth,
height: 75,
backgroundColor: 'white',
marginTop: 15,
flexDirection: 'column',
justifyContent: 'space-between',
},
cellImg: {
backgroundColor: 'white',
marginLeft: (cellWidth-55)/2,
width: 55,
height: 55,
},
cellTitle: {
backgroundColor: 'white',
fontSize: 11,
color: 'rgb(215, 215, 215)',
textAlign: 'center',
marginLeft: 0,
marginRight: 0,
}
});