微信小程序官方组件展示之表单组件picker-view源码

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软件事业部 2022-09-20 10:22:02 博主文章分类：微信小程序官方组件展示

文章标签 小程序开发微信小程序小程序源码小程序定制开发小程序 文章分类 微信开发移动开发

以下将展示微信小程序之表单组件picker-view源码官方组件能力，组件样式仅供参考，开发者可根据自身需求定义组件样式，具体属性参数详见小程序开发文档。

功能描述：

嵌入页面的滚动选择器。其中只可放置 picker-view-column组件，其它节点不会显示。

属性说明：

微信小程序官方组件展示之表单组件picker-view源码_微信小程序

Bug & Tip

1.tip: 滚动时在 iOS 自带振动反馈，可在系统设置 -> 声音与触感 -> 系统触感反馈中关闭

示例代码：

JAVASCRIPT：

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]
    })
  }
})

WXML：

<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>