微信小程序实现图片轮播及文件上传

 微信小程序实现图片轮播及文件上传

刚刚接触微信小程序，看着网上的资源写了个小例子，本地图片轮播以及图片上传。

图片轮播：

index.js

<span style="font-size:14px;">var app = getApp() 
Page({ 
 data:{ 
 mode: 'aspectFit', 
 // src:'../images/timg1.jpg', 
 imgUrls:[ 
 '../images/1.jpg', 
 '../images/2.jpg', 
 '../images/3.jpg', 
 
 '../images/4.jpg' 
 ], 
 indicatorDots: true, //是否出现焦点 
 autoplay: true, //是否自动播放 
 interval: 2000, //自动播放时间间隔 
 duration: 1000, //滑动动画时间 
 userInfo: {} 
 }, 
 onLoad:function(){ 
 console.log('onLoad Test'); 
 } 
})</span> 

注：imgUrls中为本地图片数组。

index.wxml:

<swiper indicator-dots = "{{indicatorDots}}" autoplay="{{autoplay}}" interval="{{interval}}" duration="{{duration}}"> 
<block wx:for="{{imgUrls}}"> 
 <swiper-item class="swiper_i"> 
 <image src="{{item}}" mode="{{mode}}" class="slide-image" /> 
 </swiper-item> 
 </block> 
</swiper> 

index.json:

{ 
 "navigationBarTitleText": "相册" 
} 

index.wxss:

.slide-image{ 
 width:100%; 
 height:100%; 
} 
.swiper_i{ 
 text-align: center; 
 width:100%; 
} 

好了，这是图片轮播的几个文件。会在app.json中配置。

接下来是图片上传的。因为没有服务器，暂时不能上传，但是可以从本地相册或拍照获取照片。

upload.js:

var app = getApp() 
Page({ 
 data:{ 
 // text:"这是一个页面" 
 source: '', 
 tt:false 
 }, 
 /** 
 * 选择相册或者相机 配合上传图片接口用 
 */ 
 onLoad: function() { 
 var that = this; 
 wx.chooseImage({ 
 count: 1, 
 //original原图，compressed压缩图 
 sizeType: ['original'], 
 //album来源相册 camera相机 
 sourceType: ['album', 'camera'], 
 //成功时会回调 
 success: function(res) { 
 //重绘视图 
 that.setData({ 
 source: res.tempFilePaths, 
 tt:true 
 }) 
 /* var tempFilePaths = res.tempFilePaths 
 wx.uploadFile({ 
 url: 'https://', //仅为示例，非真实的接口地址 
 filePath: tempFilePaths[0], 
 name: 'file', 
 formData:{ 
 'user': 'test' 
 }, 
 success: function(res){ 
 var data = res.data 
 //do something 
 } 
 })*/ 
 } 
 }) 
 }, 
 /*onHide:function(){ 
 this.setData({ 
 source:'' 
 }) 
 }*/ 
}) 

upload.json:

{ 
 "navigationBarTitleText": "上传图片" 
} 

upload.wxml:

<view class="Container"> 
<image src="{{source}}" mode="aspectFit" class="image-i"/> 
<block wx:if="{{tt}}"> 
 <button type="primary" bindtap="listenerButtonChooseImage">确认上传</button> 
</block> 
</view> 

upload.wxss:

/* pages/upload/upload.wxss */ 
.Container{ 
 text-align:center; 
 width:100%; 
} 
.image-i{ 
 width:100%; 
 height:100%; 
} 

app.js为空。

app.json:

{ 
 "pages": [ 
 "pages/index/index", 
 "pages/upload/upload" 
 ], 
 "window": { 
 "navigationBarTextStyle": "black", 
 "navigationBarTitleText": "演示2", 
 "navigationBarBackgroundColor": "#fbf9fe", 
 "backgroundColor": "#fbf9fe" 
 }, 
 "networkTimeout": { 
 "request": 10000, 
 "connectSocket": 10000, 
 "uploadFile": 10000, 
 "downloadFile": 10000 
 }, 
 "tabBar": { 
 "list": [{ 
 "pagePath": "pages/index/index", 
 "text": "显示图片", 
 "iconPath": "pages/images/icon_API.png", 
 "selectedIconPath": "pages/images/icon_API_HL.png" 
 },{ 
 "pagePath": "pages/upload/upload", 
 "text": "上传", 
 "iconPath": "pages/images/icon_API.png", 
 "selectedIconPath": "pages/images/icon_API_HL.png" 
 }] 
 }, 
 "debug": true 
 
} 

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