基於React Native構建的仿京東客戶端(三)
ImageButton.js檔案完整的程式碼如下:
import React, { Component } from 'react';
import {
StyleSheet,
Text,
View,
Image,
TouchableWithoutFeedback,
} from 'react-native';
export default class ImageButton extends Component {
constructor(props) {
super(props);
this.onClick = this.onClick.bind(this); // 需要在回撥函式中使用this,必須使用bind(this)來繫結
}
onClick = () => {
if (this.props.onClick) { // 在設定了回撥函式的情況下
this.props.onClick(this.props.showText, this.props.tag); // 回撥Title和Tag
}
}
render() {
return (
<TouchableWithoutFeedback onPress={this.onClick}>
<View style={{alignItems:'center',flex:1}}>
<Image style={styles.iconImg} source={this.props.renderIcon}/>
<Text style={styles.showText}>{this.props.showText}</Text>
</View>
</TouchableWithoutFeedback>
);
}
}
const styles = StyleSheet.create({
iconImg: {
width: 38,
height: 38,
marginBottom: 2
},
showText: {
fontSize: 12
}
});
HomePage.js檔案完整的程式碼如下:
import React, { Component } from 'react';
import {
StyleSheet,
Text,
View,
Image,
Dimensions,
ScrollView,
ListView
} from 'react-native';
import Swiper from 'react-native-swiper';
import ImageButton from './ImageButton';
const {width} = Dimensions.get('window');
export default class HomePage extends Component {
constructor(props){
super(props)
this.state = {
apiData: [
{id:1,swiperText:'499¥ 限量搶購真八核 騰訊雷霆手機',imageUri: 'http://localhost:8081/images/banner/1.jpg'},
{id:2,swiperText:'購趣洗手液 贏迪士尼之旅 滿88元減22元 滿188元減66元',imageUri: 'http://localhost:8081/images/banner/2.jpg'},
{id:3,swiperText:'潮流煥新季 炫品抄底 3月大促銷第三波 時間3月16日~22日',imageUri: 'http://localhost:8081/images/banner/3.jpg'},
{id:4,swiperText:'三月女人節 春裝新品 折後滿減 倒數計時',imageUri: 'http://localhost:8081/images/banner/4.jpg'}
]}
this.id = null;
this.swiperText = null;
this.imageUri = null;
}
render() {
const data = this.state.apiData;
let dataDisplay = data.map(function(jsonData){
return (
<View key={jsonData.id} style={styles.slide} >
<Text numberOfLines={1}>{jsonData.swiperText}</Text>
<Image resizeMode='stretch' style={styles.image} source={{uri: jsonData.imageUri}} />
</View>
)
});
return(
<View style={{flex: 1}}>
<ScrollView style={styles.container}>
<Swiper style={styles.wrapper} height={140} autoplay
onMomentumScrollEnd={(e, state, context) => console.log('index:', state.index)}
dot={<View style={{backgroundColor:'rgba(0,0,0,.3)', width: 6, height: 6, borderRadius: 3, margin: 5 }} />}
activeDot={<View style={{backgroundColor:'red', width: 6, height: 6, borderRadius: 3, margin: 5 }} />}
paginationStyle={{bottom: 0}} loop>
{dataDisplay}
</Swiper>
<View style={styles.imagebutton}>
<ImageButton renderIcon={require('../images/home_icons/wdgz.png')}
showText={'我的關注'} tag={'wdgz'}
onClick={this.onImageButtonClick}/>
<ImageButton renderIcon={require('../images/home_icons/wlcx.png')}
showText={'物流查詢'} tag={'wlcx'}
onClick={this.onImageButtonClick}/>
<ImageButton renderIcon={require('../images/home_icons/cz.png')}
showText={'充值'} tag={'cz'}
onClick={this.onImageButtonClick}/>
<ImageButton renderIcon={require('../images/home_icons/dyp.png')}
showText={'電影票'} tag={'dyp'}
onClick={this.onImageButtonClick}/>
</View>
<View style={styles.imagebutton}>
<ImageButton renderIcon={require('../images/home_icons/yxcz.png')}
showText={'遊戲充值'} tag={'yxcz'}
onClick={this.onImageButtonClick}/>
<ImageButton renderIcon={require('../images/home_icons/xjk.png')}
showText={'小金庫'} tag={'xjk'}
onClick={this.onImageButtonClick}/>
<ImageButton renderIcon={require('../images/home_icons/ljd.png')}
showText={'領京豆'} tag={'ljd'}
onClick={this.onImageButtonClick}/>
<ImageButton renderIcon={require('../images/home_icons/gd.png')}
showText={'更多'} tag={'gd'}
onClick={this.onImageButtonClick}/>
</View>
</ScrollView>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
wrapper: {
},
slide: {
justifyContent: 'center',
backgroundColor: 'transparent'
},
image: {
width:width,
height: 130,
},
imagebutton: {
flexDirection: 'row',
marginTop: 10
},
});
安卓和蘋果模擬器裡最終執行的效果如下: