PickerView
嵌入页面的滚动选择器
属性
属性名 | 类型 | 说明 |
---|---|---|
value | NumberArray | 数组中的数字依次表示 picker-view 内的 picker-view-column 选择的第几项(下标从 0 开始),数字大于 picker-view-column 可选项长度时,选择最后一项。 |
indicatorStyle | String | 设置选择器中间选中框的样式 |
indicatorClass | String | 设置选择器中间选中框的类名 |
maskStyle | String | 设置蒙层的样式 |
maskClass | String | 设置蒙层的类名 |
onChange | EventHandle | 当滚动选择,value 改变时触发 change 事件,event.detail = {value: value};value 为数组,表示 picker-view 内的 picker-view-column 当前选择的是第几项(下标从 0 开始) |
各端支持度
属性 | 微信小程序 | H5 | ReactNative | 百度小程序 | 支付宝小程序 | 字节跳动小程序 |
---|---|---|---|---|---|---|
value | ✔ | x | ✔ | ✔ | ✔ | |
indicatorStyle | ✔ | x | ✔ | ✔ | ✔ | |
indicatorClass | ✔ | x | ✔ | ✔ | ||
maskStyle | ✔ | x | ✔ | ✔ | ✔ | |
maskClass | ✔ | x | ✔ | ✔ | ||
onChange | ✔ | x | ✔ | ✔ | ✔ |
PickerViewColumn
仅可放置于 PickerView 中,其孩子节点的高度会自动设置成与 PickerView 的选中框的高度一致
示例:
import Taro, { Component } from '@tarojs/taro'
import { View, PickerView, PickerViewColumn } from '@tarojs/components'
export default class Picks extends Component {
constructor () {
super(...arguments)
const date = new Date()
const years = []
const months = []
const days = []
for (let i = 1990; i <= date.getFullYear(); i++) {
years.push(i)
}
for (let i = 1; i <= 12; i++) {
months.push(i)
}
for (let i = 1; i <= 31; i++) {
days.push(i)
}
this.state = {
years: years,
year: date.getFullYear(),
months: months,
month: 2,
days: days,
day: 2,
value: [9999, 1, 1]
}
}
onChange = e => {
const val = e.detail.value
this.setState({
year: this.state.years[val[0]],
month: this.state.months[val[1]],
day: this.state.days[val[2]],
value: val
})
}
render() {
return (
<View>
<View>{this.state.year}年{this.state.month}月{this.state.day}日</View>
<PickerView indicatorStyle='height: 50px;' style='width: 100%; height: 300px;' value={this.state.value} onChange={this.onChange}>
<PickerViewColumn>
{this.state.years.map(item => {
return (
<View>{item}年</View>
);
})}
</PickerViewColumn>
<PickerViewColumn>
{this.state.months.map(item => {
return (
<View>{item}月</View>
)
})}
</PickerViewColumn>
<PickerViewColumn>
{this.state.days.map(item => {
return (
<View>{item}日</View>
)
})}
</PickerViewColumn>
</PickerView>
</View>
)
}
}