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小程序自定义轮播图

时间:2017-12-15 10:11:52      阅读:317      评论:0      收藏:0      [点我收藏+]


话不多说,上图上代码。

技术分享图片

wxml

<view style="white-space: nowrap;" class="box" bindtouchstart="touchstart" bindtouchmove="touchmove" bindtouchend="touchend">
<view class="club" animation="{{animation1}}" bindtap="scrollLeft">
<image src="http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg"/>
<text>{{clubs[0].name}}</text>
</view>
<view class="club" animation="{{animation2}}" bindtap="scrollLeft">
<image src="http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg"/>
<text>{{clubs[1].name}}</text>
</view>
<view class="club" animation="{{animation3}}">
<image src="http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg"/>
<text>{{clubs[2].name}}</text>
</view>
<view class="club" animation="{{animation4}}" bindtap="scrollRight">
<image src="http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg"/>
<text>{{clubs[3].name}}</text>
</view>
<view class="club" animation="{{animation5}}" bindtap="scrollRight">
<image src="http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg"/>
<text>{{clubs[4].name}}</text>
</view>
</view>
wxss
.box {
height: 340rpx;
z-index: 0;
margin: 50rpx 0;
}
.box .club {
height: 140rpx;
width: 140rpx;
position: relative;
display: inline-block;
}
.club image {
height: 140rpx;
width: 140rpx;
}
.club text {
display: block;
width: 100%;
font-size: 24rpx;
line-height: 40rpx;
text-align: center;
}
.box .club:nth-child(1) {
transform: scale(0.8, 0.8) translateX(-120rpx);
opacity: 0.2;
z-index: 10;
}
.box .club:nth-child(2) {
transform: scale(1,1) translateX(-80rpx);
opacity: 0.5;
z-index: 100;
}
.box .club:nth-child(3) {
transform: scale(1.4,1.4);
z-index: 1000;
}
.box .club:nth-child(4) {
transform: scale(1,1) translateX(80rpx);
opacity: 0.5;
z-index: 100;
}
.box .club:nth-child(5) {
transform: scale(0.8, 0.8) translateX(120rpx);
opacity: 0.2;
z-index: 10;
}
.box .club:nth-child(1) text,
.box .club:nth-child(2) text,
.box .club:nth-child(4) text,
.box .club:nth-child(5) text{
visibility: hidden;
}
js
//触摸开始事件
touchstart: function (e) {
console.log(e.touches[0].pageX);
this.data.touchDot = e.touches[0].pageX;
var that = this;
this.data.interval = setInterval(function () {
that.data.time += 1;
}, 100);
},
//触摸移动事件
touchmove: function (e) {
let touchMove = e.touches[0].pageX;
let touchDot = this.data.touchDot;
let time = this.data.time;
console.log("touchMove: " + touchMove + ", touchDot: " + touchDot + ", diff: " + (touchMove - touchDot));
//向左滑动
if (touchMove - touchDot <= -40 && time < 10 && !this.data.done) {
console.log("向左滑动");
this.data.done = true;
this.scrollLeft();
}
//向右滑动
if (touchMove - touchDot >= 40 && time < 10 && !this.data.done) {
console.log("向右滑动");
this.data.done = true;
this.scrollRight();
}
},
//触摸结束事件
touchend: function (e) {
clearInterval(this.data.interval);
this.data.time = 0;
this.data.done = false;
}, scrollLeft() {
var animation1 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})
var animation2 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})
var animation3 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})
var animation4 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})
var animation5 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})

this.animation1 = animation1;
this.animation2 = animation2;
this.animation3 = animation3;
this.animation4 = animation4;
this.animation5 = animation5;

this.animation1.translateX(-60).opacity(0).step();
this.animation2.translateX(-140).opacity(0.5).scale(0.8, 0.8).step();
this.animation3.translateX(-110).opacity(0.5).scale(1, 1).step();
this.animation4.translateX(-70).opacity(1).scale(1.4, 1.4).step();
this.animation5.translateX(-30).opacity(0.5).scale(1, 1).step();


this.setData({
animation1: animation1.export(),
animation2: animation2.export(),
animation3: animation3.export(),
animation4: animation4.export(),
animation5: animation5.export()
})

var that = this;
setTimeout(function () {
that.animation1.translateX(-50).opacity(0.2).scale(0.8, 0.8).step({ duration: 0, timingFunction: ‘linear‘ });
that.animation2.translateX(-40).opacity(0.5).scale(1, 1).step({ duration: 0, timingFunction: ‘linear‘ });
that.animation3.translateX(0).opacity(1).scale(1.4, 1.4).step({ duration: 0, timingFunction: ‘linear‘ });
that.animation4.translateX(40).opacity(0.5).scale(1, 1).step({ duration: 0, timingFunction: ‘linear‘ });
that.animation5.translateX(50).opacity(0.2).scale(0.8, 0.8).step({ duration: 0, timingFunction: ‘linear‘ });
that.setData({
animation1: animation1.export(),
animation2: animation2.export(),
animation3: animation3.export(),
animation4: animation4.export(),
animation5: animation5.export()
})
}.bind(this), 195)

let array = this.data.clubs;
let shift = array.shift();
array.push(shift);

setTimeout(function () {
this.setData({
clubs: array
})
}.bind(this), 195)
},

//向右滑动事件
scrollRight() {
var animation1 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})
var animation2 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})
var animation3 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})
var animation4 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})
var animation5 = wx.createAnimation({
duration: 300,
timingFunction: "linear",
delay: 0
})

this.animation1 = animation1;
this.animation2 = animation2;
this.animation3 = animation3;
this.animation4 = animation4;
this.animation5 = animation5;

this.animation1.translateX(30).opacity(0.5).scale(1, 1).step();
this.animation2.translateX(70).opacity(1).scale(1.4, 1.4).step();
this.animation3.translateX(110).opacity(0.5).scale(1, 1).step();
this.animation4.translateX(120).opacity(0.2).scale(0.8, 0.8).step();
this.animation5.translateX(130).opacity(0).step();


this.setData({
animation1: animation1.export(),
animation2: animation2.export(),
animation3: animation3.export(),
animation4: animation4.export(),
animation5: animation5.export()
})

var that = this;
setTimeout(function () {
that.animation1.translateX(-50).opacity(0.2).scale(0.8, 0.8).step({ duration: 0, timingFunction: ‘linear‘ });
that.animation2.translateX(-40).opacity(0.5).scale(1, 1).step({ duration: 0, timingFunction: ‘linear‘ });
that.animation3.translateX(0).opacity(1).scale(1.4, 1.4).step({ duration: 0, timingFunction: ‘linear‘ });
that.animation4.translateX(40).opacity(0.5).scale(1, 1).step({ duration: 0, timingFunction: ‘linear‘ });
that.animation5.translateX(50).opacity(0.2).scale(0.8, 0.8).step({ duration: 0, timingFunction: ‘linear‘ });
that.setData({
animation1: animation1.export(),
animation2: animation2.export(),
animation3: animation3.export(),
animation4: animation4.export(),
animation5: animation5.export()
})
}.bind(this), 195)

let array = this.data.clubs;
let pop = array.pop();
array.unshift(pop);

setTimeout(function () {
this.setData({
clubs: array
})
}.bind(this), 195)
}
 
复制完我还有几句话要说,做前端千万不要被框架限制住自己,要做一个有灵魂的工程师。就像这个轮播图千万不要被小程序的swiper所限制。
 

小程序自定义轮播图

原文:http://www.cnblogs.com/zshno1/p/8041555.html

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