38 lines
1.1 KiB
Swift
38 lines
1.1 KiB
Swift
//
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// PhotoLibrarySaver.swift
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// suixinkan
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//
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import Photos
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import UIKit
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/// 将图片保存到系统相册，供收款二维码保存使用。
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enum PhotoLibrarySaver {
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/// 请求写入权限并将图片保存到相册。
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static func saveImage(_ image: UIImage) async -> Bool {
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let status = await requestAuthorizationIfNeeded()
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guard status == .authorized || status == .limited else {
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return false
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}
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return await withCheckedContinuation { continuation in
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PHPhotoLibrary.shared().performChanges({
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PHAssetChangeRequest.creationRequestForAsset(from: image)
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}, completionHandler: { success, _ in
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continuation.resume(returning: success)
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})
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}
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}
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private static func requestAuthorizationIfNeeded() async -> PHAuthorizationStatus {
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let current = PHPhotoLibrary.authorizationStatus(for: .addOnly)
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switch current {
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case .notDetermined:
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return await PHPhotoLibrary.requestAuthorization(for: .addOnly)
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default:
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return current
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}
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}
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}
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