一、pick:从底部弹起的滚动的日期选择器。
二、代码实例
<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
})
}
})三、时间粒度问题
（1）如何做年月选择器
当fields=‘month’，则只能选择年月
wxm文件
<view class="section">
<picker mode="date" value="{
{date}}" fields="month" start="2015-09" bindchange="bindDateChange">
<view class="picker">当前查询月度水费: {
{
date}}</view>
<view class='sel-down'></view>
</picker>
</view>js文件
Page({
//第一步
data: {
date:’’},
//第二步
onShow: function() {
//获取当前时间
var timestamp = Date.parse(new Date());
var date = new Date(timestamp);//获取当时时间
var year = date.getFullYear();// 获取年份
//获取月份，这个月份比当前月份数-1
var month = (date.getMonth() < 10 ? '0' + date.getMonth() : date.getMonth());//如果月份小于10，在前面加0
// date.getMonth() + 1);//如果需要当前月+1
if (month == 1) {
year = year -1
month = 12
}
var date=year+'-'+month;
console.log(date);
var that = thisthat.setData({
date: date //写入到data的date变量中
})
},
//第三步
// 时间选择后触发事件
bindDateChange:function(e){
this.setData({
date: e.detail.value //选择时间后重新改变值，赋给变量
})
)}
)}