Update demo

tools/demo/pages/index/index.js

@@ -3,12 +3,9 @@ Page({
    * 页面的初始数据
    */
   data: {
-    result: [],
-    steps: 3,
-    name: 'name',
-    subset: 'sonValue',
-    otherFields: ['id', 'city'],
-    originMultiArray: [
+    result_1: [],
+    result_2: [],
+    sourceData_1: [
       {
         id: '01',
         name: '1',
@@ -77,6 +74,10 @@ Page({
           }
         ]
       }
+    ],
+    sourceData_2: [
+      { name: '河北', code: '0311', nextLevel: [{ name: '石家庄', code: '031101' }, { name: '保定', code: '031102' }]},
+      { name: '北京', code: '0110', nextLevel: [{ name: '朝阳', code: '011001' }, { name: '海淀', code: '011002' }]},
     ]
   },
   /**
@@ -85,11 +86,24 @@ Page({
    * @param {Object} e.detail.selectedIndex 用户选择的数据在数组中所在的下标
    * @param {Object} e.detail.selectedArray 用户选择的数据
    */
-  pickerChange(e) {
+  pickerChange_1(e) {
     const { selectedIndex, selectedArray } = e.detail
     console.log('多级联动结果:', selectedIndex, selectedArray)
     this.setData({
-      result: selectedArray
+      result_1: selectedArray
+    })
+  },
+  /**
+   * Picker的确认回调函数
+   *
+   * @param {Object} e.detail.selectedIndex 用户选择的数据在数组中所在的下标
+   * @param {Object} e.detail.selectedArray 用户选择的数据
+   */
+  pickerChange_2(e) {
+    const { selectedIndex, selectedArray } = e.detail
+    console.log('多级联动结果:', selectedIndex, selectedArray)
+    this.setData({
+      result_2: selectedArray
     })
   }
 })

tools/demo/pages/index/index.wxml

@@ -1,7 +1,7 @@
 <!-- 多级联动 -->
 <!-- 
   sourceData: 源数组，格式必须为数组和对象的集合，参考示例
-  steps: 多级联动的阶数，默认为0
+  steps: 多级联动的阶数，默认为1
   shownFieldName: 多级联动展示数据的字段名称，默认为name
   subsetFieldName: 多级联动的子节点的字段名称，默认为subset
   otherNeedFieldsName: 若需要额外返回其他字段的数据，可以设置otherFields为数组，参考示例
@@ -13,17 +13,33 @@
   bindchange: 回调函数，参考示例
  -->
 <comp
-  sourceData="{{originMultiArray}}"
-  steps="{{steps}}"
-  shownFieldName="{{name}}"
-  subsetFieldName="{{subset}}"
-  otherNeedFieldsName="{{otherFields}}"
+  sourceData="{{sourceData_1}}"
+  steps="{{3}}"
+  shownFieldName="{{'name'}}"
+  subsetFieldName="{{'sonValue'}}"
+  otherNeedFieldsName="{{['id', 'other']}}"
   defaultValue="{{[{name: '2'}, {name: '2.2'}, {name: '2.2.1'}]}}"
   defaultValueUniqueField="{{'name'}}"
   autoSelect="{{true}}"
   initColumnSelectedIndex
-  bindchange="pickerChange">
+  bindchange="pickerChange_1">
     <view class="picker">
-      当前选择：<text wx:for="{{result}}" wx:key="index">{{item[name]}}，</text>
+      当前选择：<view wx:for="{{result_1}}" wx:key="index">{{item['name']}}</view>
+    </view>
+</comp>
+
+<comp
+  sourceData="{{sourceData_2}}"
+  steps="{{2}}"
+  shownFieldName="{{'name'}}"
+  subsetFieldName="{{'nextLevel'}}"
+  otherNeedFieldsName="{{['code']}}"
+  defaultValue="{{[{code: '0110'}, {code: '011002'}]}}"
+  defaultValueUniqueField="{{'code'}}"
+  autoSelect="{{true}}"
+  initColumnSelectedIndex
+  bindchange="pickerChange_2">
+    <view class="picker">
+      当前选择：<view wx:for="{{result_2}}" wx:key="index">{{item['name']}}</view>
     </view>
 </comp>

tools/demo/pages/index/index.wxss

@@ -0,0 +1,15 @@
+.picker {
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  margin: 10rpx 0;
+  padding: 10rpx 0;
+  background-color: #DEECE2;
+  font-size: 28rpx;
+}
+.picker view {
+  padding: 2rpx 10rpx;
+  margin-left: 10rpx;
+  margin-right: 10rpx;
+  border-bottom: 2rpx solid aqua;
+}