仿京东的省市区联动
封装的组件AddressSelect.js
export default class AddressSelect extends Component {
static defaultProps = {
commitFun: function (value) {
console.log(value);
},
dissmissFun: function () {
},
lastAddress: null,
};
constructor(props) {
super(props);
//LayoutAnimation - layout动画
//安卓平台使用 LayoutAnimation 动画必须加上这么一句代码 UIManager.setLayoutAnimationEnabledExperimental
if (Platform.OS === 'android') {
// UIManager.setLayoutAnimationEnabledExperimental(true)
}
const { lastAddress } = props;
let selectAddress = this.initAddress(lastAddress);
this.state = {
selectAddress
}
}
initAddress(lastAddress) {
let selectAddress = [
{
value: null,
label: null,
children: AREA_JSON,
}, {
value: null,
label: null,
children: null,
}, {
value: null,
label: null,
children: null,
}];
let array = null;
function fun(array, value) {
for (let item of array) {
if (item.value + '' === value + '') {
return item;
}
}
}
try {
selectAddress = selectAddress.map((item, index) => {
let result = fun(array ? array : AREA_JSON, lastAddress[index].value);
if (result.children) {
array = result.children;
}
return result;
});
} catch (e) {
console.log('-----e-', e);
}
return selectAddress
}
/**
* 列表行
* @param item
* @param i
* @returns {XML}
*/
renderListItem(item, i) {
let itemStyle = styles.itemStyle;
let textStyle = styles.itemText;
let { selectAddress } = this.state;
if (item.label === selectAddress[i].label) {
itemStyle = [itemStyle];
textStyle = [textStyle, { color: 'red' }]
}
return (
<TouchableOpacity
style={itemStyle}
key={i + item.label}
onPress={() => {
this.pressItem(item, i)
}}>
<Text style={textStyle}>{item.label}</Text>
</TouchableOpacity>
)
}
/**
* 点击列表事件
* @param item 选中数据
* @param i 选中行数
*/
pressItem(item, i) {
let { selectAddress } = this.state;
const initObj = {
value: null,
label: null,
children: null,
}
let tempIndex = 0;
if (i === 0) {
selectAddress[0] = item;
selectAddress[1] = initObj;
selectAddress[2] = initObj;
tempIndex = 1
} else if (i === 1) {
selectAddress[1] = item;
selectAddress[2] = initObj;
tempIndex = 2
} else {
selectAddress[2].value = item.value;
selectAddress[2].label = item.label;
tempIndex = 2;
let address = [
{
label: selectAddress[0].label,
value: selectAddress[0].value
},
{
label: selectAddress[1].label,
value: selectAddress[1].value
},
{
label: selectAddress[2].label,
value: selectAddress[2].value
}
];
this.props.commitFun && this.props.commitFun(address);
this.props.dissmissFun && this.props.dissmissFun();
return null;
}
this.setState({ selectAddress });
InteractionManager.runAfterInteractions(() => {
this.tabView.goToPage(tempIndex)
})
}
render() {
const { selectAddress } = this.state;
return (
<View style={styles.container}>
<View style={{ width: width, height: 40, flexDirection: 'row', justifyContent: 'center', alignItems: 'center', }}>
<Text>所在地区</Text>
</View>
<ScrollableTabView
ref={(tabView) => {
this.tabView = tabView;
}}
renderTabBar={() => <SelectCityTabBar />}>
{selectAddress.map((obj, i) => {
let array = (i === 0) ? AREA_JSON : selectAddress[i - 1].children;
if (array) {
return (
<ScrollView
key={i}
tabLabel={obj.label || '请选择'}
style={styles.scrollStyleList}>
{array && array.map((obj2, j) => {
return this.renderListItem(obj2, i)
})}
</ScrollView>
)
}
})}
</ScrollableTabView>
</View>
);
}
}
样式：
const styles = StyleSheet.create({
container: {
height: height * 0.6,
backgroundColor: '#F5FCFF',
},
scrollStyleList: {
width: width,
marginBottom: 10,
marginTop: 10,
},
itemStyle: {
marginTop: 5,
width: width,
height: 35,
marginLeft: 10,
justifyContent: 'center'
},
itemText: {
fontSize: 15,
color: '#333333'
},
});
父组件的使用
render() {
return (
<TouchableOpacity style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}
onPress={() => this.openAddressSelect()}>
<Text>地址选择</Text>
<AddressSelect
commitFun={(area) => this.onSelectArea(area)}
dissmissFun={() => {
}}
/>
</TouchableOpacity>
)
}
另：
SelectCityTabBar.js
export default class SelectCityTabBar extends Component {
//属性声名
static propTypes = {
goToPage: PropTypes.func,
activeTab: PropTypes.number,
tabs: PropTypes.array,
backgroundColor: PropTypes.string,
activeTextColor: PropTypes.string,
inactiveTextColor: PropTypes.string,
textStyle: Text.propTypes.style,
tabStyle: ViewPropTypes.style,
renderTab: PropTypes.func,
underlineStyle: ViewPropTypes.style,
};
//默认属性
static defaultProps = {
activeTextColor: '#FA3D4F',
inactiveTextColor: 'black',
backgroundColor: null,
};
renderTab(name, page, isTabActive, onPressHandler) {
const {activeTextColor, inactiveTextColor, textStyle,} = this.props;
const textColor = isTabActive ? activeTextColor : inactiveTextColor;
const fontWeight = isTabActive ? 'bold' : 'normal';
const viewStyle = isTabActive ? [styles.tab, {borderBottomWidth: 1, borderColor: BlackTextColor}] : styles.tab;
if (Platform.OS !== 'ios') {
return <TouchableNativeFeedback
delayPressIn={0}
background={TouchableNativeFeedback.SelectableBackground()}
key={name + page}
accessible={true}
accessibilityLabel={name}
accessibilityTraits='button'
onPress={() => onPressHandler(page)}>
<View style={viewStyle}>
<Text style={[{color: textColor, fontWeight,}, textStyle,]}>
{name}
</Text>
</View>
</TouchableNativeFeedback>
}
return <TouchableOpacity
key={name + page}
accessible={true}
accessibilityLabel={name}
accessibilityTraits='button'
onPress={() => onPressHandler(page)}>
<View style={viewStyle}>
<Text style={[{color: textColor, fontWeight,}, textStyle,]}>
{name}
</Text>
</View>
</TouchableOpacity>;
}
render() {
return (
<View style={{
flexDirection: 'row',
borderBottomWidth: 1,
borderColor: BlackTextColor
}}>
{this.props.tabs.map((name, page) => {
const isTabActive = this.props.activeTab === page;
const renderTab = this.props.renderTab || this.renderTab;
return this.renderTab(name, page, isTabActive, this.props.goToPage);
})}
</View>
);
}
}
const styles = StyleSheet.create({
tab: {
alignItems: 'center',
justifyContent: 'center',
paddingBottom: 10,
marginLeft: 10,
},
tabs: {
height: 50,
flexDirection: 'row',
justifyContent: 'space-around',
borderWidth: 1,
borderTopWidth: 0,
borderLeftWidth: 0,
borderRightWidth: 0,
borderColor: '#ccc',
},
});
area.json
式样
[
{
"value": "110000000000",
"children": [
{
"value": "110100000000",
"children": [
{
"value": "110101000000",
"label": "东城区"
},
{
"value": "110102000000",
"label": "西城区"
},
{
"value": "110105000000",
"label": "朝阳区"
},
{
"value": "110106000000",
"label": "丰台区"
},
{
"value": "110107000000",
"label": "石景山区"
},
{
"value": "110108000000",
"label": "海淀区"
},
{
"value": "110109000000",
"label": "门头沟区"
},
{
"value": "110111000000",
"label": "房山区"
},
{
"value": "110112000000",
"label": "通州区"
},
{
"value": "110113000000",
"label": "顺义区"
},
{
"value": "110114000000",
"label": "昌平区"
},
{
"value": "110115000000",
"label": "大兴区"
},
{
"value": "110116000000",
"label": "怀柔区"
},
{
"value": "110117000000",
"label": "平谷区"
},
{
"value": "110118000000",
"label": "密云区"
},
{
"value": "110119000000",
"label": "延庆区"
}
],
"label": "北京市"
}
],
"label": "北京市"
}
]
example_1.png
example_2.png
example_3.png
