小程序弹出层动画

wxml

---

<view class="modals modals-bottom-dialog" bindtap="hideModal" wx:if="{{value}}">

<view class="modals-cancel" ></view>

<view class="bottom-dialog-body bottom-pos" animation="{{animationData}}"></view>

</view>

<button bindtap="showModal">点我</button>

wxss

---

/*模态框*/

.modals{position:fixed; z-index: 999; top:0; left: 0; right:0; bottom: 0;}

.modals-cancel{position:absolute; z-index:1000; top:0; left: 0; right:0; bottom: 0; background-color: rgba(0,0,0,.5);}

.bottom-dialog-body{position:absolute; z-index:10001; bottom:0; left:0; right:0; padding:30rpx; height:300rpx; background-color: #fff;}

/*动画前初始位置 !important,千万不要忘记*/

.bottom-pos{-webkit-transform:translateY(100%);transform:translateY(100%);}

js

---

Page({

data: {

value: false, //模态框的状态 true-隐藏 false-显示

animationData: {},//

},

// 显示遮罩层

showModal: function () {

var that = this;

that.setData({

value: true

})

var animation = wx.createAnimation({

duration: 600,//动画的持续时间 默认400ms 数值越大，动画越慢 数值越小，动画越快

timingFunction: 'ease',//动画的效果 默认值是linear

})

this.animation = animation

setTimeout(function () {

that.fadeIn();//调用显示动画

}, 200)

},

 

// 隐藏遮罩层

hideModal: function () {

var that = this;

var animation = wx.createAnimation({

duration: 800,//动画的持续时间 默认400ms 数值越大，动画越慢 数值越小，动画越快

timingFunction: 'ease',//动画的效果 默认值是linear

})

this.animation = animation

that.fadeDown();//调用隐藏动画

setTimeout(function () {

that.setData({

value: false

})

},

720)//先执行下滑动画，再隐藏模块

 

},

 

//动画集

fadeIn: function () {

this.animation.translateY(0).step()

this.setData({

animationData: this.animation.export()//动画实例的export方法导出动画数据传递给组件的animation属性

})

},

fadeDown: function () {

this.animation.translateY(300).step()

this.setData({

animationData: this.animation.export(),

})

},

})