(精华)2020年7月30日 微信小程序 选择器的使用
picker 从底部弹起的滚动选择器
<view class="section">
<view class="section__title">普通选择器</view>
<picker bindchange="bindPickerChange" value="{
{index}}" range="{
{array}}">
<view class="picker">
当前选择：{
{
array[index]}}
</view>
</picker>
</view>
<view class="section">
<view class="section__title">多列选择器</view>
<picker mode="multiSelector" bindchange="bindMultiPickerChange" bindcolumnchange="bindMultiPickerColumnChange" value="{
{multiIndex}}" range="{
{multiArray}}">
<view class="picker">
当前选择：{
{
multiArray[0][multiIndex[0]]}}，{
{
multiArray[1][multiIndex[1]]}}，{
{
multiArray[2][multiIndex[2]]}}
</view>
</picker>
</view>
<view class="section">
<view class="section__title">时间选择器</view>
<picker mode="time" value="{
{time}}" start="09:01" end="21:01" bindchange="bindTimeChange">
<view class="picker">
当前选择: {
{
time}}
</view>
</picker>
</view>
<view class="section">
<view class="section__title">日期选择器</view>
<picker mode="date" value="{
{date}}" start="2015-09-01" end="2017-09-01" bindchange="bindDateChange">
<view class="picker">
当前选择: {
{
date}}
</view>
</picker>
</view>
<view class="section">
<view class="section__title">省市区选择器</view>
<picker mode="region" bindchange="bindRegionChange" value="{
{region}}" custom-item="{
{customItem}}">
<view class="picker">
当前选择：{
{
region[0]}}，{
{
region[1]}}，{
{
region[2]}}
</view>
</picker>
</view>
Page({
data: {
array: ['美国', '中国', '巴西', '日本'],
objectArray: [
{
id: 0,
name: '美国'
},
{
id: 1,
name: '中国'
},
{
id: 2,
name: '巴西'
},
{
id: 3,
name: '日本'
}
],
index: 0,
multiArray: [['无脊柱动物', '脊柱动物'], ['扁性动物', '线形动物', '环节动物', '软体动物', '节肢动物'], ['猪肉绦虫', '吸血虫']],
objectMultiArray: [
[
{
id: 0,
name: '无脊柱动物'
},
{
id: 1,
name: '脊柱动物'
}
], [
{
id: 0,
name: '扁性动物'
},
{
id: 1,
name: '线形动物'
},
{
id: 2,
name: '环节动物'
},
{
id: 3,
name: '软体动物'
},
{
id: 3,
name: '节肢动物'
}
], [
{
id: 0,
name: '猪肉绦虫'
},
{
id: 1,
name: '吸血虫'
}
]
],
multiIndex: [0, 0, 0],
date: '2016-09-01',
time: '12:01',
region: ['广东省', '广州市', '海珠区'],
customItem: '全部'
},
bindPickerChange: function(e) {
console.log('picker发送选择改变，携带值为', e.detail.value)
this.setData({
index: e.detail.value
})
},
bindMultiPickerChange: function (e) {
console.log('picker发送选择改变，携带值为', e.detail.value)
this.setData({
multiIndex: e.detail.value
})
},
bindMultiPickerColumnChange: function (e) {
console.log('修改的列为', e.detail.column, '，值为', e.detail.value);
var data = {
multiArray: this.data.multiArray,
multiIndex: this.data.multiIndex
};
data.multiIndex[e.detail.column] = e.detail.value;
switch (e.detail.column) {
case 0:
switch (data.multiIndex[0]) {
case 0:
data.multiArray[1] = ['扁性动物', '线形动物', '环节动物', '软体动物', '节肢动物'];
data.multiArray[2] = ['猪肉绦虫', '吸血虫'];
break;
case 1:
data.multiArray[1] = ['鱼', '两栖动物', '爬行动物'];
data.multiArray[2] = ['鲫鱼', '带鱼'];
break;
}
data.multiIndex[1] = 0;
data.multiIndex[2] = 0;
break;
case 1:
switch (data.multiIndex[0]) {
case 0:
switch (data.multiIndex[1]) {
case 0:
data.multiArray[2] = ['猪肉绦虫', '吸血虫'];
break;
case 1:
data.multiArray[2] = ['蛔虫'];
break;
case 2:
data.multiArray[2] = ['蚂蚁', '蚂蟥'];
break;
case 3:
data.multiArray[2] = ['河蚌', '蜗牛', '蛞蝓'];
break;
case 4:
data.multiArray[2] = ['昆虫', '甲壳动物', '蛛形动物', '多足动物'];
break;
}
break;
case 1:
switch (data.multiIndex[1]) {
case 0:
data.multiArray[2] = ['鲫鱼', '带鱼'];
break;
case 1:
data.multiArray[2] = ['青蛙', '娃娃鱼'];
break;
case 2:
data.multiArray[2] = ['蜥蜴', '龟', '壁虎'];
break;
}
break;
}
data.multiIndex[2] = 0;
break;
}
console.log(data.multiIndex);
this.setData(data);
},
bindDateChange: function(e) {
console.log('picker发送选择改变，携带值为', e.detail.value)
this.setData({
date: e.detail.value
})
},
bindTimeChange: function(e) {
console.log('picker发送选择改变，携带值为', e.detail.value)
this.setData({
time: e.detail.value
})
},
bindRegionChange: function (e) {
console.log('picker发送选择改变，携带值为', e.detail.value)
this.setData({
region: e.detail.value
})
}
})
picker-view 嵌入页面的滚动选择器
<view class="container">
<view class="page-body">
<view class="selected-date">{
{
year}}年{
{
month}}月{
{
day}}日{
{
isDaytime ? "白天" : "夜晚"}}</view>
<picker-view indicator-style="height: 50px;" style="width: 100%; height: 300px;" value="{
{value}}" bindchange="bindChange">
<picker-view-column>
<view wx:for="{
{years}}" wx:key="{
{years}}" style="line-height: 50px; text-align: center;">{
{
item}}年</view>
</picker-view-column>
<picker-view-column>
<view wx:for="{
{months}}" wx:key="{
{months}}" style="line-height: 50px; text-align: center;">{
{
item}}月</view>
</picker-view-column>
<picker-view-column>
<view wx:for="{
{days}}" wx:key="{
{days}}" style="line-height: 50px; text-align: center;">{
{
item}}日</view>
</picker-view-column>
<picker-view-column>
<view class="icon-container">
<image class="picker-icon" src="../lib/daytime.png" />
</view>
<view class="icon-container">
<image class="picker-icon" src="../lib/night.png" />
</view>
</picker-view-column>
</picker-view>
</view>
</view>
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)
}
Page({
onShareAppMessage() {
return {
title: 'picker-view',
path: 'page/component/pages/picker-view/picker-view'
}
},
data: {
years,
year: date.getFullYear(),
months,
month: 2,
days,
day: 2,
value: [9999, 1, 1],
isDaytime: true,
},
bindChange(e) {
const val = e.detail.value
this.setData({
year: this.data.years[val[0]],
month: this.data.months[val[1]],
day: this.data.days[val[2]],
isDaytime: !val[3]
})
}
})
slider 滑动选择器
var pageData = {
}
for (var i = 1; i < 5; ++i) {
(function (index) {
pageData[`slider${
index}change`] = function (e) {
console.log(`slider${
index}发生change事件，携带值为`, e.detail.value)
}
})(i);
}
Page(pageData)
<view class="page">
<view class="page__hd">
<text class="page__title">slider</text>
<text class="page__desc">滑块</text>
</view>
<view class="page__bd">
<view class="section section_gap">
<text class="section__title">设置left/right icon</text>
<view class="body-view">
<slider bindchange="slider1change" left-icon="cancel" right-icon="success_no_circle"/>
</view>
</view>
<view class="section section_gap">
<text class="section__title">设置step</text>
<view class="body-view">
<slider bindchange="slider2change" step="5"/>
</view>
</view>
<view class="section section_gap">
<text class="section__title">显示当前value</text>
<view class="body-view">
<slider bindchange="slider3change" show-value/>
</view>
</view>
<view class="section section_gap">
<text class="section__title">设置最小/最大值</text>
<view class="body-view">
<slider bindchange="slider4change" min="50" max="200" show-value/>
</view>
</view>
</view>
</view>