picker组件在开发者工具上点击无效，手机上点击虽然有效但是不稳定，有时能点击出来，有的时候点击不了。

<picker class="pick" mode ='selector' bindchange="timechange" value="{{timeindex}}" range="{{timedata}}" range-key="{{'name'}}">

<view class='chose'>{{timedata[timeindex].name}} ></view>

</picker>

timedata: [{

id: "1",

name: "近一个小时"

},

{

id: "2",

name: "近两个小时"

},

{

id: "4",

name: "近四个小时"

},

{

id: "8",

name: "近八个小时"

},

{

id: "24",

name: "近二十四小时"

}

],

timeindex: 0,