radio-group 循环出的顺序不对

<radio-group class=“radio-group” bindchange=“commit”>

        <label class=“radio” wx:for=“{{choices.data[index].choice}}” wx:for-index=‘i’ wx:key=‘key’ data-index=‘{{index}}’>

          <view class=‘m30 flex_w jcsb’>

            {{i}}{{item}}

            <radio value=“{{index}}” checked=“{{checked}}” />

          </view>

        </label>

      </radio-group>