onShareAppMessage用canvas自定义分享图imageUrl，真机不显示为什么？
onShareAppMessage用canvas自定义分享图imageUrl，在开发者工具上显示正常，在真机上模拟的时候，图片一直获取不到是为什么 canvasImage (url) {
const that = this;
await wx.getImageInfo({ src: url,
success (res) {
var data = res
wx.createSelectorQuery()
.select('#shareCanvas')
.fields({ node: true, size: true })
.exec((res) => {
const canvas = res?.[0]?.node
const ctx = canvas.getContext('2d')
let {width, path, height} = data
var widths = height*5/4
const dpr = wx.getWindowInfo().pixelRatio
canvas.width = widths * dpr
canvas.height = height * dpr
ctx.scale(dpr, dpr)
ctx.clearRect(0, 0, widths, height)
const w = (widths - width) / 2
const image = canvas.createImage()
image.onload = () => {
ctx.drawImage(image, w, 0)
wx.canvasToTempFilePath({
canvasId: 'shareCanvas',
x: w,
width: widths * dpr,
height: height * dpr,
canvas,
success: async (res) => {
const tempFilePath = res.tempFilePath
that.setData({
shareImgUrl: tempFilePath
});
},
file: (err) => {
console.log(err, 'errwreew')
}
})
}
image.onerror = (err) => {
console.log(err, 'trtrtrtrtrtr')
}
image.src= path
})
},
})
}
onShareAppMessage() {
return {
path: home,
title: '测试',
imageUrl: this.shareImgUrl,
}
},
