【今天吃什么】微信小程序炫酷摇一摇来告诉你！
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我报名参加金石计划1期挑战——瓜分10万奖池，这是我的第1篇文章，点击查看活动详情
前言
本篇文章是用UniApp开发的，但是由于调用的API只是被UniApp封装好的微信API，所以整个功能是可以完全使用微信小程序原生开发的。
如果想用原生小程序开发，在调用uni.xxx类似的API方法时，只需要将 uni 替换成 wx 即可。
某些配置文件内容，会从uniapp和微信小程序两个维度去进行说明，方便不同框架的程序员来开发使用。
先来展示一下看看叭
自定义顶部栏
微信小程序是自带一个顶部标题栏的，需要手动配置才会隐藏。
-
uniapp是在 page.json 文件中配置当前路由{ "path" : "pages/eat/eat", "style" : { "navigationBarTitleText": "吃点啥", "enablePullDownRefresh": false, "navigationStyle": "custom" } }"navigationStyle": "custom"表示自定义当前页面顶部栏
-
微信小程序则是直接在当前页面的json文件中配置{ "navigationStyle": "custom" }
画流星
- 去掉了微信顶部栏之后，就可以直接做一个全屏的动画效果了，我这里做的是流星，大家也可以在我其他文章中找不同的动画效果替换上去。
<view class="tn-satr">
<view class="sky"></view>
<view class="stars">
<view class="falling-stars">
<view class="star-fall"></view>
<view class="star-fall"></view>
<view class="star-fall"></view>
<view class="star-fall"></view>
</view>
<view class="small-stars">
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
</view>
<view class="medium-stars">
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
<view class="star"></view>
</view>
</view>
</view>
.tn-satr {
position: fixed;
width: 100%;
height: 600px;
overflow: hidden;
flex-shrink: 0;
z-index: 998;
}
.stars {
position: absolute;
z-index: 1;
width: 100%;
height: 400px;
}
.star {
border-radius: 50%;
background: #ffffff;
box-shadow: 0px 0px 6px 0px rgba(255, 255, 255, 0.8);
}
.small-stars .star {
position: absolute;
width: 3px;
height: 3px;
}
.small-stars .star:nth-child(2n) {
opacity: 0;
-webkit-animation: star-blink 1.2s linear infinite alternate;
animation: star-blink 1.2s linear infinite alternate;
}
.small-stars .star:nth-child(1) {
left: 40px;
bottom: 50px;
}
.small-stars .star:nth-child(2) {
left: 200px;
bottom: 40px;
}
.small-stars .star:nth-child(3) {
left: 60px;
bottom: 120px;
}
.small-stars .star:nth-child(4) {
left: 140px;
bottom: 250px;
}
.small-stars .star:nth-child(5) {
left: 400px;
bottom: 300px;
}
.small-stars .star:nth-child(6) {
left: 170px;
bottom: 80px;
}
.small-stars .star:nth-child(7) {
left: 200px;
bottom: 360px;
-webkit-animation-delay: .2s;
animation-delay: .2s;
}
.small-stars .star:nth-child(8) {
left: 250px;
bottom: 320px;
}
.small-stars .star:nth-child(9) {
left: 300px;
bottom: 340px;
}
.small-stars .star:nth-child(10) {
left: 130px;
bottom: 320px;
-webkit-animation-delay: .5s;
animation-delay: .5s;
}
.small-stars .star:nth-child(11) {
left: 230px;
bottom: 330px;
-webkit-animation-delay: 7s;
animation-delay: 7s;
}
.small-stars .star:nth-child(12) {
left: 300px;
bottom: 360px;
-webkit-animation-delay: .3s;
animation-delay: .3s;
}
@-webkit-keyframes star-blink {
50% {
width: 3px;
height: 3px;
opacity: 1;
}
}
@keyframes star-blink {
50% {
width: 3px;
height: 3px;
opacity: 1;
}
}
.medium-stars .star {
position: absolute;
width: 3px;
height: 3px;
opacity: 0;
-webkit-animation: star-blink 1.2s ease-in infinite alternate;
animation: star-blink 1.2s ease-in infinite alternate;
}
.medium-stars .star:nth-child(1) {
left: 300px;
bottom: 50px;
}
.medium-stars .star:nth-child(2) {
left: 400px;
bottom: 40px;
-webkit-animation-delay: .4s;
animation-delay: .4s;
}
.medium-stars .star:nth-child(3) {
left: 330px;
bottom: 300px;
-webkit-animation-delay: .2s;
animation-delay: .2s;
}
.medium-stars .star:nth-child(4) {
left: 460px;
bottom: 300px;
-webkit-animation-delay: .9s;
animation-delay: .9s;
}
.medium-stars .star:nth-child(5) {
left: 300px;
bottom: 150px;
-webkit-animation-delay: 1.2s;
animation-delay: 1.2s;
}
.medium-stars .star:nth-child(6) {
left: 440px;
bottom: 120px;
-webkit-animation-delay: 1s;
animation-delay: 1s;
}
.medium-stars .star:nth-child(7) {
left: 200px;
bottom: 140px;
-webkit-animation-delay: .8s;
animation-delay: .8s;
}
.medium-stars .star:nth-child(8) {
left: 30px;
bottom: 480px;
-webkit-animation-delay: .3s;
animation-delay: .3s;
}
.medium-stars .star:nth-child(9) {
left: 460px;
bottom: 400px;
-webkit-animation-delay: 1.2s;
animation-delay: 1.2s;
}
.medium-stars .star:nth-child(10) {
left: 150px;
bottom: 10px;
-webkit-animation-delay: 1s;
animation-delay: 1s;
}
.medium-stars .star:nth-child(11) {
left: 420px;
bottom: 450px;
-webkit-animation-delay: 1.2s;
animation-delay: 1.2s;
}
.medium-stars .star:nth-child(12) {
left: 340px;
bottom: 180px;
-webkit-animation-delay: 1.1s;
animation-delay: 1.1s;
}
@keyframes star-blink {
50% {
width: 4px;
height: 4px;
opacity: 1;
}
}
.star-fall {
position: relative;
border-radius: 2px;
width: 80px;
height: 2px;
overflow: hidden;
-webkit-transform: rotate(-20deg);
transform: rotate(-20deg);
}
.star-fall:after {
content: "";
position: absolute;
width: 50px;
height: 2px;
background: -webkit-gradient(linear, right top, left top, from(rgba(0, 0, 0, 0)), to(rgba(255, 255, 255, 0.4)));
background: linear-gradient(to left, rgba(0, 0, 0, 0) 0%, rgba(255, 255, 255, 0.4) 100%);
left: 100%;
-webkit-animation: star-fall 3.6s linear infinite;
animation: star-fall 3.6s linear infinite;
}
.star-fall:nth-child(1) {
left: 80px;
bottom: -100px;
}
.star-fall:nth-child(1):after {
-webkit-animation-delay: 2.4s;
animation-delay: 2.4s;
}
.star-fall:nth-child(2) {
left: 200px;
bottom: -200px;
}
.star-fall:nth-child(2):after {
-webkit-animation-delay: 2s;
animation-delay: 2s;
}
.star-fall:nth-child(3) {
left: 430px;
bottom: -50px;
}
.star-fall:nth-child(3):after {
-webkit-animation-delay: 3.6s;
animation-delay: 3.6s;
}
.star-fall:nth-child(4) {
left: 400px;
bottom: 100px;
}
.star-fall:nth-child(4):after {
-webkit-animation-delay: .2s;
animation-delay: .2s;
}
@-webkit-keyframes star-fall {
20% {
left: -100%;
}
100% {
left: -100%;
}
}
@keyframes star-fall {
20% {
left: -100%;
}
100% {
left: -100%;
}
}
画流动的波浪
- 为了不让天上的星星太孤单，就得画一个波浪来陪伴！！skr！！！
<view class="tnwave waveAnimation">
<view class="waveWrapperInner bgTop">
<view class="wave waveTop" style="background-image: url('')"></view>
</view>
<view class="waveWrapperInner bgMiddle">
<view class="wave waveMiddle" style="background-image: url('')"></view>
</view>
<view class="waveWrapperInner bgBottom">
<view class="wave waveBottom" style="background-image: url('')"></view>
</view>
</view>
- 波浪的素材是三张图片，放在下面自取哦~~
.template-outset {
background-image: linear-gradient(to top, #4C3FAE 20%, #6E26BA 80%);
width: 100vw;
height: 100vh;
}
@keyframes move_wave {
0% {
transform: translateX(0) translateZ(0) scaleY(1)
}
50% {
transform: translateX(-25%) translateZ(0) scaleY(1)
}
100% {
transform: translateX(-50%) translateZ(0) scaleY(1)
}
}
.tnwave {
overflow: hidden;
position: absolute;
left: 0;
right: 0;
bottom: 0;
top: 0;
margin: auto;
}
.waveWrapperInner {
position: absolute;
width: 100%;
overflow: hidden;
height: 100%;
}
.wave {
position: absolute;
left: 0;
width: 200%;
height: 100%;
background-repeat: repeat no-repeat;
background-position: 0 bottom;
transform-origin: center bottom;
}
.bgTop {
opacity: 0.4;
}
.waveTop {
background-size: 50% 45px;
}
.waveAnimation .waveTop {
animation: move_wave 4s linear infinite;
}
.bgMiddle {
opacity: 0.6;
}
.waveMiddle {
background-size: 50% 40px;
}
.waveAnimation .waveMiddle {
animation: move_wave 3.5s linear infinite;
}
.bgBottom {
opacity: 0.95;
}
.waveBottom {
background-size: 50% 35px;
}
.waveAnimation .waveBottom {
animation: move_wave 2s linear infinite;
}
页面布局
为了让用户进来一眼就能知道是可以摇一摇的，我们需要加一个摇一摇的动图，放在最显眼的位置。
<view class="tn-flex tn-flex-direction-column tn-flex-col-center tn-flex-row-center">
<view class="tn-flex tn-flex-col-center tn-flex-row-center">
<view class="tn-shadow-blur" style="background-image:url('');width: 170rpx;height: 170rpx;background-size: cover;">
</view>
</view>
</view>
- 摇一摇素材
.tn-flex {
display: -webkit-flex;
display: flex;
}
.tn-flex-direction-column {
flex-direction: column;
}
.tn-flex-col-center {
align-items: center;
}
.tn-flex-row-center {
justify-content: center;
}
.tn-shadow-blur {
position: relative;
}
.tn-shadow-blur::before {
content: " ";
display: block;
background: inherit;
filter: blur(10rpx);
position: absolute;
width: 100%;
height: 100%;
top: 10rpx;
left: 10rpx;
z-index: -1;
opacity: 0.4;
transform-origin: 0 0;
border-radius: inherit;
transform: scale(1, 1);
}
然后加上自己喜欢的文字
<view class="tn-text-center tn-color-gray--disabled" style="padding: 60vh 0 0 0;">
<view class="" style="font-size: 45rpx;">
摇一摇
</view>
<view class="tn-color-gray--disabled tn-text-df tn-padding-top">
摇到什么吃什么
</view>
</view>
.tn-text-center {
text-align: center;
}
.tn-color-gray--disabled {
color: #E6E6E6 !important;
}
.tn-padding-top {
padding-top: 30rpx;
}
因为我做了一个领取外卖券的小程序，所以我在下面放了一个按钮，方便用户领券。
摇一摇，摇到什么吃什么
- 进入页面就需要开始监听用户摇动手机的动作，所以需要把监听代码放到 onShow 生命周期中。
onShow() {
let _this = this
let acc = true
// 监听摇一摇
uni.startAccelerometer({
success: function() {
// 执行摇一摇
uni.onAccelerometerChange(function(res) {
let page = getCurrentPages()
let currentPage = page[page.length - 1]
if(currentPage.route === 'pages/eat/eat'){
if (res.x > 1 || res.y > 1 || res.z > 1) {
// if (res.x > 3 || res.y > 3 || res.z > 3) {
if(acc){
acc = false
uni.vibrateLong({
success() {
// 随机摇一个值
Array.prototype.random = function() {
let idx = Math.floor(Math.random() * this
.length);
return this[idx];
}
let arr = ['黄焖鸡米饭', '炒饭', '炒面', '木桶饭', '咖喱饭', '汉堡薯条',
'披萨意面', '沙拉/轻食', '螺蛳粉', '酸辣粉', '热干面', '重庆小面',
'河南焖面', '兰州拉面', '陕西凉面', '山西刀削面', '北京炸酱面',
'东北烤冷面', '包子饺子', '豆浆油条', '肉夹馍', '煎饼果子', '成都冒菜',
'炸鸡炸串', '麻辣香锅', '麻辣烫', '中式快餐盒饭'
];
uni.showModal({
title: '摇到了',
content: arr.random(),
showCancel: true,
confirmText: '领券吃它',
cancelText: '重新摇',
success(res) {
if (res.confirm) {
_this.handelCoupon()
}
acc = true
}
})
}
});
}
}
}
})
}
})
}
-
通过
uni.startAccelerometer方法监听用户摇一摇的动作 -
监听摇一摇的同时，为了避免跳出当前页之后还在监听，所以需要判断是否停留在当前页，所以需要用到
getCurrentPages方法获取当前页的路由。 -
由于不知道用户是横着摇、竖着摇、斜着摇，所以需要判断 x、y、z三个方向的值。
- 之前写的三个值都大于 3 ，经过某些 iPhone 用户测试，发现并不那么灵敏，所以改成了 1
-
为了防止摇的时候一直出现随机值，在监听方法外部定义了一个
acc的值，用于判断是否已经摇出来了。 -
摇出随机值之后，需要给用户一个反馈信息，所以用了
uni.vibrateLong方法来给一个长震动，让用户手机震动500ms
随机值可以自定义，想吃什么就添加什么，摇到什么就吃什么！
体验一下
由于摇一摇和震动无法体现在文章中，所以大家可以关注我的公众号猿来是前端底部栏有小程序菜单，亦可以直接在微信中搜索小程序嗒嗒吃喝玩乐小工具体验哦。