bug修复

496_dongfengqichen/pages/poster/poster.js

   onLoad: function (options) {
     app.globalData.nowPage = 2;
   },
-
   /**
    * 生命周期函数--监听页面初次渲染完成
    */
   onReady: function () {
+    _totalDownloadTask = 6;
+    _currentSuccessDownloadTask = 0;
+    _saveImg = false;
     if(app.globalData.userInfoData && app.globalData.userInfoData.avatarUrl){
       this.data.userHead = app.globalData.userInfoData.avatarUrl;
       this.setData({
     }
   },
   cacheFun:function(){
+    // _saveImg = true;
     wx.getSystemInfo({
       success: option => {
         this.data.windowScale = option.windowWidth / 750;
    * 生命周期函数--监听页面显示
    */
   onShow: function () {
-    _totalDownloadTask = 6;
-    _currentSuccessDownloadTask = 0;
-    _saveImg = false;
+
   },
 
   /**
     }
   },
   saveImg: function () {//保存到手机
-    console.log(this.data.posterUrl);
     if (!this.data.posterUrl[this.data.swiperCurrent]){
       wx.showLoading({
         title: '海报合成中',
         mask:true
       })
-      console.log("swiperCurrent = " + this.data.swiperCurrent)
       _saveImg = true;
+      // console.log("值1："+_currentSuccessDownloadTask);
       this.posterDrawing(this.data.swiperCurrent + 1);
     }else{
       this.savePic();
     }
   },
   savePic: function () {
-    wx.hideLoading();
     wx.saveImageToPhotosAlbum({
       filePath: this.data.posterUrl[this.data.swiperCurrent],
       success(res) {
     // console.log("_totalDownloadTask = " + _totalDownloadTask)
     // console.log("_currentSuccessDownloadTask = " + _currentSuccessDownloadTask)
     //图片尚未下载完成，禁止绘制
+    // console.log("值2："+_currentSuccessDownloadTask);
     if(_currentSuccessDownloadTask < _totalDownloadTask || !_saveImg){
       return;
     }
     //先画个圆   前两个参数确定了圆心 （x,y） 坐标  第三个参数是圆的半径  四参数是绘图方向  默认是false，即顺时针
     ctx.arc(scale * 50 / 2 + scale * 121, scale * 50 / 2 + scale * 62, scale * 50 / 2, 0, Math.PI * 2, false);
     ctx.clip(); //剪切
-    console.log(this.data.userHead)
     ctx.drawImage(this.data.userHead, scale * 121, scale * 62, scale * 50, scale * 50); //头像
     ctx.restore(); //恢复之前保存的绘图上下文
     //名称
         canvasId: 'myCanvas',
         success: res => {
           this.data.posterUrl[this.data.swiperCurrent] = res.tempFilePath;
+          wx.hideLoading();
           this.savePic();
         }
       })