微信小程序表單組件 picker

基礎(chǔ)庫 1.0.0 開始支持，低版本需做兼容處理。

從底部彈起的滾動選擇器。

mode 的合法值

除了上述通用的屬性，對于不同的mode，picker擁有不同的屬性。

普通選擇器：mode = selector

多列選擇器：mode = multiSelector

時間選擇器：mode = time

日期選擇器：mode = date

fields 有效值：*

省市區(qū)選擇器：mode = region 1.4.0

示例代碼：

<view class="section">
    <view class="sectiontitle">普通選擇器</view>
    <picker bindchange="bindPickerChange" value="{{index}}" range="{{array}}">
        <view class="picker">
            當(dāng)前選擇: {{array[index]}}
        </view>
    </picker>
</view>

    <view class="sectiontitle">多列選擇器
    <picker mode="multiSelector" bindchange="bindMultiPickerChange" bindcolumnchange="bindMultiPickerColumnChange" value="{{multiIndex}}">
     
       當(dāng)前選擇: {{multiArray[0][multiIndex[0]]}},{{multiArray[1][multiIndex[1]]}},{{multiArray[2][multiIndex[2]]}}
     


<view class="section">
    <view class="sectiontitle">時間選擇器</view>
    <picker mode="time" value="{{time}}" start="09:01" end="21:01" bindchange="bindTimeChange">
        <view class="picker">
            當(dāng)前選擇: {{time}}
        </view>
    </picker>
</view>
<view class="section">
    <view class="sectiontitle">日期選擇器</view>
    <picker mode="date" value="{{date}}" start="2015-09-01" end="2017-09-01" bindchange="bindDateChange">
        <view class="picker">
            當(dāng)前選擇: {{date}}
        </view>
    </picker>
</view>

    省市區(qū)選擇器
    
      
        當(dāng)前選擇: {{region[0]}},{{region[1]}},{{region[2]}}
      
    

Page({
  data: {
    array: ['美國', '中國', '巴西', '日本'],
    objectArray: [
      {
        id: 0,
        name: '美國'
      },
      {
        id: 1,
        name: '中國'
      },
      {
        id: 2,
        name: '巴西'
      },
      {
        id: 3,
        name: '日本'
      }
    ],
    index: 0,
    multiArray: [['無脊柱動物', '脊柱動物'], ['扁性動物', '線形動物', '環(huán)節(jié)動物', '軟體動物', '節(jié)肢動物'], ['豬肉絳蟲', '吸血蟲']],
    objectMultiArray: [
      [
        {
          id: 0,
          name: '無脊柱動物'
        },
        {
          id: 1,
          name: '脊柱動物'
        }
      ], [
        {
          id: 0,
          name: '扁性動物'
        },
        {
          id: 1,
          name: '線形動物'
        },
        {
          id: 2,
          name: '環(huán)節(jié)動物'
        },
        {
          id: 3,
          name: '軟體動物'
        },
        {
          id: 3,
          name: '節(jié)肢動物'
        }
      ], [
        {
          id: 0,
          name: '豬肉絳蟲'
        },
        {
          id: 1,
          name: '吸血蟲'
        }
      ]
    ],
    multiIndex: [0, 0, 0],
    date: '2016-09-01',
    time: '12:01',
    region: ['廣東省', '廣州市', '海珠區(qū)']
  },
  bindPickerChange: function(e) {
    console.log('picker發(fā)送選擇改變，攜帶值為', e.detail.value)
    this.setData({
      index: e.detail.value
    })
  },
  bindMultiPickerChange: function (e) {
    console.log('picker發(fā)送選擇改變，攜帶值為', e.detail.value)
    this.setData({
      multiIndex: e.detail.value
    })
  },
  bindMultiPickerColumnChange: function (e) {
    console.log('修改的列為', e.detail.column, '，值為', 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] = ['扁性動物', '線形動物', '環(huán)節(jié)動物', '軟體動物', '節(jié)肢動物'];
            data.multiArray[2] = ['豬肉絳蟲', '吸血蟲'];
            break;
          case 1:
            data.multiArray[1] = ['魚', '兩棲動物', '爬行動物'];
            data.multiArray[2] = ['鯽魚', '帶魚'];
            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] = ['豬肉絳蟲', '吸血蟲'];
                break;
              case 1:
                data.multiArray[2] = ['蛔蟲'];
                break;
              case 2:
                data.multiArray[2] = ['螞蟻', '螞蟥'];
                break;
              case 3:
                data.multiArray[2] = ['河蚌', '蝸牛', '蛞蝓'];
                break;
              case 4:
                data.multiArray[2] = ['昆蟲', '甲殼動物', '蛛形動物', '多足動物'];
                break;
            }
            break;
          case 1:
            switch (data.multiIndex[1]) {
              case 0:
                data.multiArray[2] = ['鯽魚', '帶魚'];
                break;
              case 1:
                data.multiArray[2] = ['青蛙', '娃娃魚'];
                break;
              case 2:
                data.multiArray[2] = ['蜥蜴', '龜', '壁虎'];
                break;
            }
            break;
        }
        data.multiIndex[2] = 0;
        console.log(data.multiIndex);
        break;
    }
    this.setData(data);
  },
  bindDateChange: function(e) {
    console.log('picker發(fā)送選擇改變，攜帶值為', e.detail.value)
    this.setData({
      date: e.detail.value
    })
  },
  bindTimeChange: function(e) {
    console.log('picker發(fā)送選擇改變，攜帶值為', e.detail.value)
    this.setData({
      time: e.detail.value
    })
  },
  bindRegionChange: function (e) {
    console.log('picker發(fā)送選擇改變，攜帶值為', e.detail.value)
    this.setData({
      region: e.detail.value
    })
  }
})