// 获取的颜色 onColor(event) {     //canvas2d     return new Promise((resolve, reject) => {       var query = wx.createSelectorQuery();       var dpr = getApp().globalData.dpr;       query.select('#canvas-img').fields({         node: true,         size: true       }).exec((res) => {         //可能报错         if (res[0] == null || res[0].node == null) {           return;         };         var canvas = res[0].node;         var ctx = canvas.getContext('2d');         canvas.width = res[0].width * dpr;         canvas.height = res[0].height * dpr;         var img = canvas.createImage();         wx.downloadFile({           url: event.url,           success: ((x) => {             img.src = x.tempFilePath;             img.onload = (e) => {               ctx.drawImage(img, 20, 20, 343, 150);               var imageData = ctx.getImageData(21, 25, 343, 150).data;               var color = [];               for (var i = 0; i < 2; i++) {                 var R = imageData[i == 0 ? 100 : 2800];                 var G = imageData[i == 0 ? 101 : 2801];                 var B = imageData[i == 0 ? 102 : 2802];                 color.push("rgba(" + R + "," + G + "," + B + ")");               };               var color = [color[0], color[color.length - 1]];               resolve({                 'color': color,                 'i': event.i               });             };           }),           fail: ((err) => {})         });       });     });   }, //处理函数 getHomeSwipe() {     var that = this     $fn.post('getHomeSwipe').then(res => {       var arry = res.data.data;       arry.bannerList.map((item,index)=>{         console.log(index,item)         that.onColor({           'url': item.photoUrl,           'i': index         }).then((res) => {           console.log(1111)           arry.bannerList[res.i].color = res.color           this.setData({             ['swipe[' + res.i + '].color']: res.color           })         })       })       that.setData({         swipe: arry.bannerList,       });     })   } //swipe数组 bannerlist swipe:[ {"id":"10", "bannerName":"福袋", "weight":8, "photoUrl":"http://qiniuoss.vipcaihui.cn/1615198935408984944646", "redirectUrl":"", "remark":"", "type":1, "publishStatus":1, "delStatus":0, "createTime":"2020-12-08 02:02:35" }, {"id":"11", "bannerName":"福袋新年", "weight":0, "photoUrl":"http://qiniuoss.vipcaihui.cn/1611973057757306578063", "redirectUrl":"", "remark":"", "type":1, "publishStatus":1, "delStatus":0, "createTime":"2021-01-30 10:18:03"}] 麻烦大佬看看😂😂😂，是啥问题导致的

[图片]导出后正常的图片就变形了  var canvas = res[0].node;         var ctx = canvas.getContext('2d');         var width = this.data.xRight - this.data.xLeft;         var height = this.data.yBottom - this.data.yTop;         wx.canvasToTempFilePath({           x: this.data.xLeft + this.data.maxLeft,           y: this.data.yTop + this.data.maxTop,           width: width,           height: height,           destWidth: width * 4,           destHeight: height * 4,           canvas: canvas,           success: ((res => {              var obj = {               'url': res.tempFilePath             };             if (isSave) {               this.triggerEvent('run', obj);               this.setData({                 show: false               })             } else {               wx.previewImage({                 url: res.tempFilePath,                 urls: [res.tempFilePath],               })             }             wx.hideLoading()           }))         })

for (var i = 0; i < 32; i++) {     context.beginPath()     context.setFillStyle(i % 2 == 0 ? "#ffffff" : "#FFF7AF")     context.arc(r+20, -50, 4, 0, 2 * Math.PI)     context.rotate((360 / 32) * Math.PI / 180);     context.fill()   } r 是转盘半径加大的 -50这个值设置y轴不生效，请问是什么导致的

加载数据在onload里，但是在上传图片后导致页面onshow执行，导致页面数据被刷新掉了，有处理的方案吗？

[图片]需求是需要把这个小程序logo更换另一个logo

在两台电脑上，一个可以通过设置编译模式打开，另一个无法设置打开 [图片][图片][图片] [图片]