图像而不是 UIImage 上传到 Firestore
it1352
帮助1人
问题说明
使用 Swift 5.0/SwiftUI 2.0
Using Swift 5.0 / SwiftUI 2.0
将 UIImage 上传到 Firestore 时可用的一种方法是 jpegData(compressionQuality: Double)，它实质上使获取已保存图像的整个过程更快.
One method available when uploading an UIImage to Firestore is jpegData(compressionQuality: Double) which essentially makes the whole process of fetching the saved image a lot faster.
是否有任何等效的 Image 或任何其他可行的解决方法，或者像 UIImage 或糟糕的 UX 一样简单
Is there any equivalent for Image yet or any other viable workarounds or its as simple as either UIImage or poor UX
正确答案
#1
struct ContentView: View {
//Here
@State var uiImage: UIImage?
var body: some View {
VStack {
if uiImage != nil {
Image(uiImage: uiImage!)
}
Button(action: {
downloadImage()
}, label: {
Text("Download image")
})
}
}
func downloadImage() {
URLSession.shared.dataTask(with:URL(string: "https://upload.wikimedia.org/wikipedia/commons/3/3f/Self-portrait_taken_with_laptop,_March,_2018.jpg")!) { (data, response, eooror) in
guard data != nil else { return }
DispatchQueue.main.async {
self.uiImage = UIImage(data: data!)
}
}.resume()
}
//Here
func getData() {
var data = uiImage?.jpegData(compressionQuality: 0.5)
}
}
这篇好文章是转载于：学新通技术网
