微信小程序开发之『弹出菜单』特效

先看下效果图. 

代码: 

1.popMenu.js

Page({  
    data: {  
        isPopping: false,//是否已经弹出  
        animPlus: {},//旋转动画  
        animCollect: {},//item位移,透明度  
        animTranspond: {},//item位移,透明度  
        animInput: {},//item位移,透明度  
    },  
    //点击弹出  
    plus: function () {  
        if (this.data.isPopping) {  
            //缩回动画  
            this.popp();  
            this.setData({  
                isPopping: false  
            })  
        } else if (!this.data.isPopping) {  
            //弹出动画  
            this.takeback();  
            this.setData({  
                isPopping: true  
            })  
        }  
    },  
    input: function () {  
        console.log("input")  
    },  
    transpond: function () {  
        console.log("transpond")  
    },  
    collect: function () {  
        console.log("collect")  
    },  
  
    //弹出动画  
    popp: function () {  
        //plus顺时针旋转  
        var animationPlus = wx.createAnimation({  
            duration: 500,  
            timingFunction: 'ease-out'  
        })  
        var animationcollect = wx.createAnimation({  
            duration: 500,  
            timingFunction: 'ease-out'  
        })  
        var animationTranspond = wx.createAnimation({  
            duration: 500,  
            timingFunction: 'ease-out'  
        })  
        var animationInput = wx.createAnimation({  
            duration: 500,  
            timingFunction: 'ease-out'  
        })  
        animationPlus.rotateZ(180).step();  
        animationcollect.translate(-100, -100).rotateZ(180).opacity(1).step();  
        animationTranspond.translate(-140, 0).rotateZ(180).opacity(1).step();  
        animationInput.translate(-100, 100).rotateZ(180).opacity(1).step();  
        this.setData({  
            animPlus: animationPlus.export(),  
            animCollect: animationcollect.export(),  
            animTranspond: animationTranspond.export(),  
            animInput: animationInput.export(),  
        })  
    },  
    //收回动画  
    takeback: function () {  
        //plus逆时针旋转  
        var animationPlus = wx.createAnimation({  
            duration: 500,  
            timingFunction: 'ease-out'  
        })  
        var animationcollect = wx.createAnimation({  
            duration: 500,  
            timingFunction: 'ease-out'  
        })  
        var animationTranspond = wx.createAnimation({  
            duration: 500,  
            timingFunction: 'ease-out'  
        })  
        var animationInput = wx.createAnimation({  
            duration: 500,  
            timingFunction: 'ease-out'  
        })  
        animationPlus.rotateZ(0).step();  
        animationcollect.translate(0, 0).rotateZ(0).opacity(0).step();  
        animationTranspond.translate(0, 0).rotateZ(0).opacity(0).step();  
        animationInput.translate(0, 0).rotateZ(0).opacity(0).step();  
        this.setData({  
            animPlus: animationPlus.export(),  
            animCollect: animationcollect.export(),  
            animTranspond: animationTranspond.export(),  
            animInput: animationInput.export(),  
        })  
    },  
  
  
    onLoad: function (options) {  
        // 生命周期函数--监听页面加载  
    },  
    onReady: function () {  
        // 生命周期函数--监听页面初次渲染完成  
    },  
    onShow: function () {  
        // 生命周期函数--监听页面显示  
    },  
    onHide: function () {  
        // 生命周期函数--监听页面隐藏  
    },  
    onUnload: function () {  
        // 生命周期函数--监听页面卸载  
    },  
    onPullDownRefresh: function () {  
        // 页面相关事件处理函数--监听用户下拉动作  
    },  
    onReachBottom: function () {  
        // 页面上拉触底事件的处理函数  
    },  
    onShareAppMessage: function () {  
        // 用户点击右上角分享  
        return {  
            title: 'title', // 分享标题  
            desc: 'desc', // 分享描述  
            path: 'path' // 分享路径  
        }  
    }  
})  

2.popMenu.wxml

<view>  
  <image src="/pages/images/collect.png" class="img-style" animation="{{animCollect}}" bindtap="collect"></image>  
  <image src="/pages/images/transpond.png" class="img-style" animation="{{animTranspond}}" bindtap="transpond"></image>  
  <image src="/pages/images/input.png" class="img-style" animation="{{animInput}}" bindtap="input"></image>  
  <image src="/pages/images/plus.png" class="img-plus-style" animation="{{animPlus}}" bindtap="plus"></image>  
</view>  

3.popMenu.wxss

.img-plus-style {  
  height: 150rpx;  
  width: 150rpx;  
  position: absolute;  
  bottom: 250rpx;  
  right: 100rpx;  
  z-index: 100;  
}  
  
.img-style {  
  height: 150rpx;  
  width: 150rpx;  
  position: absolute;  
  bottom: 250rpx;  
  right: 100rpx;  
  opacity: 0;  
}  

原文地址：https://blog.csdn.net/qq_26420489/article/details/62044014