kangyu kingkangyu
swiftui-lab
/ refreshable-scrollview-implementation.swift
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February 7, 2024 00:46
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| // Authoer: The SwiftUI Lab | |
| // Full article: https://swiftui-lab.com/scrollview-pull-to-refresh/ | |
| import SwiftUI | |
| struct RefreshableScrollView<Content: View>: View { | |
| @State private var previousScrollOffset: CGFloat = 0 | |
| @State private var scrollOffset: CGFloat = 0 | |
| @State private var frozen: Bool = false | |
| @State private var rotation: Angle = .degrees(0) |
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| import CommonCrypto | |
| extension String { | |
| func hmac(key: String) -> String { | |
| var digest = [UInt8](repeating: 0, count: Int(CC_SHA1_DIGEST_LENGTH)) | |
| CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA1), key, key.count, self, self.count, &digest) | |
| let data = Data(bytes: digest) | |
| return data.base64EncodedString() | |
| } | |
| } |