微信小程序 实现listview带字母滑动
wxml
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<!--字母滑动-->
<view class="letter-position" wx:if="{{filterType == 'name'}}" hidden="{{letterShow?'true':''}}" style="z-index:{{Zindex}}" catchtouchstart="handlerAlphaTap" catchtouchmove="handlerMove" catchtouchend="handlerEnd">
<image class="no-stars star-icon" data-loc="star" src="../img/no-stars.png"></image>
<text class="letter" wx:for="{{groups}}" wx:for-item="group" data-loc="{{group.id}}" wx:key="L_{{group.id}}">
{{group.id}}
</text>
<text class="letter no-letter">
#
</text>
</view>
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<scroll-view scroll-into-view="{{locationTo}}" bindscrolltolower="onscrollLower" scroll-y="{{trues}}" style="height: {{clientHeihgt?clientHeihgt+'px':'auto'}}" bindscroll="scroll" scroll-top="{{scrollTop}}" hidden="{{favoriteCards.length==0 && starCards.length ==0}}">
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js
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handlerAlphaTap(e) {
var ap = e.target.dataset.loc; //字母
this.setData({
locationTo: ap
});
var list = this.data.groups;
this.offsetTop = (this.data.clientHeihgt - list.length * 16) / 2;
},
handlerMove(e) {
var _this = this;
var list = this.data.groups;
var moveY = e.touches[0].clientY;
var rY = moveY - this.offsetTop;
if (rY >= 0) {
var index = Math.ceil((rY - 16) / 16);
if (0 <= index && index < list.length) {
_this.setData({
locationTo: list[index].id,
nonwApID: list[index].id,
fly: false,
//nonwAp: list[index]
});
// _this.setData({
// nonwApID:_this.data.nonwAp.id
// });
}
}
},
handlerEnd(e) {
// try{
this.setData({
nonwApID: '',
fly: true,
// locationTo:this.data.nonwAp.id
});
// }catch(e){
// }
var _this = this;
this.setData({
scoTTTTp: e.currentTarget.dataset.scrollTop
});
},
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感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！
原文链接：http://blog.csdn.net/kingrome2017/article/details/71330867