用canvas绘制图片的时候 模拟器上正常显示 但是真机上不显示
const ctx = wx.createCanvasContext('myCanvas')
var imgUrl = 'https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=1446459463,4116825017&fm=26&gp=0.jpg';
ctx.drawImage(imgUrl, 140, 300, 100, 100) ctx.draw();
解决：
需要用 wx.getImageInfo 将网络图片转成本地路径 然后在真机就能正常显示了
const ctx = wx.createCanvasContext('myCanvas')
var imgUrl = 'https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=1446459463,4116825017&fm=26&gp=0.jpg';
//将网络图片转成本地路径
wx.getImageInfo({
src: imgUrl,
success: function(res) {
ctx.drawImage(res.path, 140, 300, 100, 100)
ctx.draw();
}
})
