使用命令:保存图片到系统相册wx.saveImageToPhotosAlbum(Object object)
wx.saveImageToPhotosAlbum({filePath: //图片地址success(res) {console.log(res)//可执行其他跳转或者命令},fail(res){console.log(res)//接口调用失败的回调函数},complete(){//失败或成功都会执行}})
微信文档地址:https://developers./miniprogram/dev/api/media/image/wx.saveImageToPhotosAlbum.html