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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