92 lines
2.6 KiB
Vue
92 lines
2.6 KiB
Vue
<template>
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<view>
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<view @touchstart="touchstart" @touchend="touchend" @tap="bgImgTap(num)">
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<image style="z-index: 3;" src="/static/del/500478055.png" mode="aspectFill" :animation="num==0?showpic:hidepic"></image>
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<image style="z-index: 2;" src="/static/del/img001.png" v-if="picshow" mode="aspectFill" :animation="num==1?showpic:hidepic"></image>
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</view>
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<view class="switchit pf">
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<view class="switchspot" :style="num== index?'opacity:0.8':'opacity:0.2'" v-for="(item,index) in 2" :key="index"></view>
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</view>
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</view>
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</template>
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<script>
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export default {
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data() {
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return {
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num:0,
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picnum:[],
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picshow:true,
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hidepic:false,
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showpic:'showpic'
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}
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},
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onLoad() {
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this.animationtest();
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},
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methods: {
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animationtest(){ //页面加载后的自动轮播
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var num=this.num;
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this.changePic(num);
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},
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changePic(num){//轮播主方法
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clearInterval(this.setInter1);//先将已有的计时器清除
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var animation= uni.createAnimation({
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timingFunction: 'ease',
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}) //创建一个动画实例
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this.animation = animation
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this.setInter1=setInterval(function(){//循环
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this.num=num;
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num++;
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if(num>this.picmaxnum){
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num=0;
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}
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//淡入
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animation.opacity(1).step({duration:1500}) //描述动画
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this.showpic=animation.export() //输出动画
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//淡出
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animation.opacity(0).step({duration:1500})
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this.hidepic=animation.export()
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}.bind(this),4000)
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},
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touchstart(e){//滑动开始的位置，记录位置的坐标。
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this.startData.clientX=e.changedTouches[0].clientX;
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this.startData.clientY=e.changedTouches[0].clientY;
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},
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touchend(e){//滑动结束的点，记录坐标，减去起点位置
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const subX=e.changedTouches[0].clientX-this.startData.clientX;
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const subY=e.changedTouches[0].clientY - this.startData.clientY;
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if(subY>50 || subY<-50){// console.log('上下滑')
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}else{
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if(subX>100){//右滑，显示前一张，当前的页面减一。如果当前页面是第一张，显示最后一张。
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if(this.num==0)
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this.num=this.picmaxnum;
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else
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this.num--;
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this.changePic(this.num);
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}else if(subX<-100){//左滑，显示下一张，当前的页面加一。如果当前页面是最后一张，显示第一张。
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if(this.num==this.picmaxnum)
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this.num=0;
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else
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this.num++;
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this.changePic(this.num);
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}
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}
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},
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bgImgTap(num){
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if(num==0){
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uni.switchTab({
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url:'../a'
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})
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}else{
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//点击不同的图片，对应不同的需求
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}
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},
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}
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}
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</script>
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<style>
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</style> |