使用APICloud AVM框架实现App导航栏菜单

<template>
    <view class="page">
		<safe-area></safe-area>
		<scroll-view id="navView" class="item-group" scroll-x scroll-y="false" show-scrollbar="false">
            <view class="item" onclick={this.fnSetFrameGroupIndex} data-index={index} v-for="(item,index) in menuNameList">
				<text class={this.data.selectedIndex==index?'item-title-active':'item-title'}>{item}</text>
			</view>
        </scroll-view>
		<frame-group class="framegroup" id="frameGroup" preload="0" onchange={this.onchange} scrollEnabled="true"></frame-group>
    </view>
</template>
<script>
	export default {
		name: 'index',
		apiready(){
			// console.log(api.winWidth);
			var frames = [];
			for (var i=0;i<this.data.menuList.length;i++) {
				var name = this.data.menuList[i];
				var title = this.data.menuNameList[i];
				frames.push({
					name: title,
					url: name + '.stml'
				});
			}
			var frameGroup = document.getElementById('frameGroup');
			frameGroup.load({
				frames: frames
			});
		},
		data() {
			return{
				menuList: ['page1', 'page2', 'page3', 'page4', 'page5', 'page6', 'page7', 'page8', 'page9'],
				menuNameList:['推荐', '法律', '法规', '生产', '安全', '环保', '机构', '新闻', '咨询'],
                selectedIndex: 0,
				itemWith:(api.winWidth-20)*0.15
			}
		},
		methods: {
			fnSetFrameGroupIndex(e) {
				//计算scroll-view 向右滑动的距离，来实现活动页面时 顶部的导航也跟着滑动
				var navView = document.getElementById('navView');
                var index = e.target.dataset.index;
				if(index>6){
					navView.scrollTo({
						x:(index-6)*this.data.itemWith+10
					})
				}
				else if(index==6){
					navView.scrollTo({
						x:10
					})
				}
				else{
					if(this.data.selectedIndex>index){
						navView.scrollTo({
							x:0
						})
					}
				}
                if (this.data.selectedIndex != index) {
                    this.data.selectedIndex = index;
                    var frameGroup = document.getElementById('frameGroup');
                    frameGroup.setIndex({
                        index: index,
                        scroll: true
                    });
                }
            },
            onchange(e){
				//计算scroll-view 向右滑动的距离，来实现活动页面时 顶部的导航也跟着滑动
				var navView = document.getElementById('navView');
                var index = e.detail.index;
				if(index>6){
					navView.scrollTo({
						x:(index-6)*this.data.itemWith+10
					})
				}
				else if(index==6){
					navView.scrollTo({
						x:10
					})
				}
				else{
					if(this.data.selectedIndex>index){
						navView.scrollTo({
							x:0
						})
					}
				}
				//确认跳转当前页面
                if (this.data.selectedIndex != index) {
                    this.data.selectedIndex = index;
                }
            }
		}
	}
</script>
<style>
    .page {
        height: 100%;
    }
	.item-group {
        width: 100%;
        height: 50px;
		padding: 10px;
    }
    .item {
		width: 15%;
        align-items: center;
    }
	.item-title-active{
		border-bottom: 2px solid #3c40c6;
		color: #000000;
		padding-bottom: 3px;
	}
	.item-title{
		color: #666666;
		padding-bottom: 3px;
		border-bottom: 0px solid #3c40c6;
	}
	.framegroup{
		margin: 10px;
	}
</style>