参考源码：
http://www.see-source.com/weixinwidget/detail.html?wid=82
https://blog.csdn.net/pcaxb/article/details/56276180
https://developers.weixin.qq.com/miniprogram/dev/api/api-animation.html
train.wxml
<view class='train_con'>
<view class='head'>
<text>{{bankname}}</text>
<text class='count'>{{index+1}}/{{allquestion.length}}</text>
</view>
<view bindtouchstart="touchStart" bindtouchend="touchEnd" style='width:100%;height:100%;display: flex;flex-direction: column;justify-content: center;align-items: center;'>
<view class='question_view'>
<text class='question_text'>{{questionlist.question}}</text>
<view class='option_view' data-id="A" bindtap="changeColor">
<view class="letter_view {{letterid=='A'?'active':''}} {{errorid=='A'?'error':''}}">
<text class='letter'>A</text>
</view>
<view class='option_text_view' >
<text class='option_text'>{{questionlist.choiceA}}</text>
</view>
</view>
<view class='option_view' data-id='B' bindtap="changeColor">
<view class="letter_view {{letterid=='B'?'active':''}} {{errorid=='B'?'error':''}}">
<text class='letter'>B</text>
</view>
<view class='option_text_view'>
<text class='option_text'>{{questionlist.choiceB}}</text>
</view>
</view>
<view class='option_view' data-id='C' bindtap="changeColor">
<view class="letter_view {{letterid=='C'?'active':''}} {{errorid=='C'?'error':''}}">
<text class='letter'>C</text>
</view>
<view class='option_text_view'>
<text class='option_text'>{{questionlist.choiceC}}</text>
</view>
</view>
<view class='option_view' data-id='D' bindtap="changeColor">
<view class="letter_view {{letterid=='D'?'active':''}} {{errorid=='D'?'error':''}}">
<text class='letter'>D</text>
</view>
<view class='option_text_view'>
<text class='option_text'>{{questionlist.choiceD}}</text>
</view>
</view>
</view>
<!-- 答案解析 -->
<view>
<view class="analysis_view {{clickcheckid==1?'checked2':''}}">
<text>参考答案：{{questionlist.answer}}\n参考解析：{{questionlist.analysis}}</text>
</view>
</view>
<view class="checkanswer_view {{clickcheckid==1?'checked':''}}" bindtap='checkanswer_click'>
<text>查看答案</text>
</view>
</view>
<!-- 透明遮盖层，用于退出评分层 -->
<view bindtap="hideModal" animation="{{animationData}}" class="touming_top" wx:if="{{showModalStatus}}">
</view>
<!-- 评分遮盖层 -->
<view animation="{{animationData}}" class="container-column buydes-dialog-container" wx:if="{{showModalStatus}}">
<view class="buydes-dialog-container-top">这道题对你有用吗？评个分吧</view>
<view class="container-column buydes-dialog-container-bottom">
<!-- 评分 -->
<block wx:for="{{stars}}">
<image class="star-image" style="left: {{item*80+185}}rpx" src="{{key > item ?selectedSrc : normalSrc}}">
<view class="item" style="left:0rpx" data-key="{{item+1}}" bindtap="selectRight"></view>
</image>
</block>
<view class="mark_btn" bindtap='mark_click'>
<text>确定</text>
</view>
</view>
</view>
<!-- 透明遮盖层，用于退出评分层 -->
<view bindtap="hideModal" animation="{{animationData}}" class="touming" wx:if="{{showModalStatus}}">
</view>
<!-- 底部栏 -->
<view class='leftandright'>
<view class='bottom_view' bindtap="showModal" >
<image class="bottom_image" src='../images/score.png'></image>
</view>
<view class='bottom_view' bindtap='nextquestion_click'>
<image class="bottom_image" src='../images/comment.png'></image>
</view>
<button style="color: #fff; width: 80rpx;height: 80rpx;background-color: #fff;padding:0rpx; margin-left:0rpx;margin-right:0rpx;padding-left:0px;padding-right:0px;" id="shareBtn" open-type="share" class='share_btn'>
<image class="bottom_image" src='../images/share.png'></image>
</button>
</view>
</view>
train.js
var interval = "";//周期执行函数的对象
var time = 0;//滑动时间
var touchDot = 0;//触摸时的原点
var flag_hd = true;//判定是否可以滑动
let animationShowHeight = 300;//动画偏移高度
Page({
/**
* 页面的初始数据
*/
data: {
// 遮罩层变量
animationData: "",
showModalStatus: false,
imageHeight: 0,
imageWidth: 0,
// 评分变量
stars: [0, 1, 2, 3, 4],//评分数值数组
normalSrc: '../images/score.png',//空心星星图片路径
selectedSrc: '../images/fullstar.png',//选中星星图片路径
key: 0,//评分
},
//点击星星
selectRight: function (e) {
var key = e.currentTarget.dataset.key
console.log("得" + key + "分")
this.setData({
key: key
})
},
// 确定评分
mark_click: function () {
this.hideModal()
},
// 显示遮罩层
showModal: function () {
//创建一个动画实例animation。调用实例的方法来描述动画。
var animation = wx.createAnimation({
duration: 500, //动画持续时间500ms
timingFunction: "ease",//动画以低速开始，然后加快，在结束前变慢
delay: 0 //动画延迟时间0ms
})
this.animation = animation
//调用动画操作方法后要调用 step() 来表示一组动画完成
animation.translateY(animationShowHeight).step()// 在Y轴向上偏移300
this.setData({
//通过动画实例的export方法导出动画数据传递给组件的animation属性。
animationData: animation.export(),
showModalStatus: true //显示遮罩层
})
setTimeout(function () {
animation.translateY(0).step()
this.setData({
animationData: animation.export()
})
}.bind(this), 1)
},
// 隐藏遮罩层
hideModal: function () {
var animation = wx.createAnimation({
duration: 500,
timingFunction: "ease",
delay: 0
})
this.animation = animation;
animation.translateY(animationShowHeight).step()
this.setData({
animationData: animation.export(),
})
setTimeout(function () {
animation.translateY(0).step()
this.setData({
animationData: animation.export(),
showModalStatus: false
})
}.bind(this), 200)
},
// 评分按钮
score_click: function () {
},
/**
* 生命周期函数--监听页面加载
*/
onLoad: function (options) {
},
/**
* 生命周期函数--监听页面初次渲染完成
*/
onReady: function () {
},
/**
* 生命周期函数--监听页面显示
*/
onShow: function () {
flag_hd = true; //重新进入页面之后，可以再次执行滑动切换页面代码
clearInterval(interval); // 清除setInterval
time = 0;
let that = this;
wx.getSystemInfo({
success: function (res) {
animationShowHeight = res.windowHeight;
}
})
},
/**
* 生命周期函数--监听页面隐藏
*/
onHide: function () {
},
/**
* 生命周期函数--监听页面卸载
*/
onUnload: function () {
},
/**
* 页面相关事件处理函数--监听用户下拉动作
*/
onPullDownRefresh: function () {
},
/**
* 页面上拉触底事件的处理函数
*/
onReachBottom: function () {
},
/**
* 用户点击右上角分享
*/
onShareAppMessage: function () {
},
})
train.wxss
page {
background-color: #fff;
}
/* -----------------评分遮罩层----------------- */
/* 分享按钮 */
.share_btn::after {
border: none;
}
/* 整个评分遮罩层 */
.buydes-dialog-container {
width: 100%;
height: 300rpx;
justify-content: space-between;
background-color: #fff;
position: fixed;
bottom: 101rpx;
/* z-index: 998; */
border-top: 1rpx solid #e8e8e8;
}
/* 评分遮罩层顶部 */
.buydes-dialog-container-top {
height: 100rpx;
padding-top: 20rpx;
display: flex;
justify-content: center;
flex-grow: 1;
font-size: 32rpx;
color: #737373;
}
/* 评分遮罩层底部 */
.buydes-dialog-container-bottom {
height: 150rpx;
padding-top: 20rpx;
background-color: #fff;
display: flex;
justify-content: center;
flex-grow: 0;
}
/* 空心的星星图片 */
.star-image {
position: absolute;
top: 100rpx;
width: 60rpx;
height: 60rpx;
src: "../../images/score.png";
}
/* 触发评分点击的区域 */
.item {
position: absolute;
top: 0rpx;
width: 60rpx;
height: 60rpx;
}
/* 确认评分按钮 */
.mark_btn {
width: 100%;
height: 100rpx;
background-color: #fff;
color: #55c5ac;
display: flex;
justify-content: center;
align-items: center;
border-top: 1rpx solid #eaeaea;
margin-top: 60rpx;
margin-bottom: 150rpx;
font-size: 32rpx;
}
/* 透明遮罩层（上） */
.touming_top {
width: 100%;
height: 900rpx;
opacity: 0;
position: fixed;
bottom: 402rpx;
z-index: 998;
}
/* 透明遮罩层（下） */
.touming {
width: 100%;
height: 101rpx;
opacity: 0;
position: fixed;
bottom: 0rpx;
z-index: 998;
}
作者：小奇冰
链接：微信小程序弹出和隐藏遮罩层动画以及五星评分 - 小奇冰 - 博客园
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