113 lines
3.3 KiB
Swift
113 lines
3.3 KiB
Swift
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//
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// UIImageView+Ext.swift
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// E-Wow
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//
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// Created by lym on 2021/1/8.
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//
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import Foundation
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import Kingfisher
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import UIKit
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extension UIImageView
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{
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private static let defaultOptions: KingfisherOptionsInfo = [
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.transition(.none),
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.loadDiskFileSynchronously,
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]
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/**
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无s3逻辑
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默认给图片设置bgColor(csbn)
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*/
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func loadImage(_ url: String?,
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placeholder: Placeholder? = nil,
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bgColor: UIColor? = .c.csbn,
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options: KingfisherOptionsInfo? = defaultOptions)
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{
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backgroundColor = bgColor
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kf.setImage(with: URL(string: url ?? ""), placeholder: placeholder, options: options)
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}
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/// - Parameters:
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/// - urlString: 图片的URL字符串
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/// - placeholder: 占位图（可选）
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/// - progressBlock: 进度回调，接收已下载字节和总字节
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/// - completionBlock: 完成回调，接收加载结果
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func loadImage(
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_ urlString: String?,
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placeholder: Placeholder? = nil,
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bgColor: UIColor? = .hexInt32(0xFBDEFF).withAlphaComponent(0.08),
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progressBlock: ((_ receivedSize: Int64, _ totalSize: Int64) -> Void)? = nil,
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completionBlock: ((Result<RetrieveImageResult, KingfisherError>) -> Void)? = nil
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) {
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guard let urlString = urlString, let url = URL(string: urlString) else {
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completionBlock?(.failure(.requestError(reason: .emptyRequest)))
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return
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}
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kf.setImage(
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with: url,
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placeholder: placeholder,
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options: nil,
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progressBlock: { receivedSize, totalSize in
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// 进度回调
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progressBlock?(receivedSize, totalSize)
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},
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completionHandler: { result in
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// 完成回调
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completionBlock?(result)
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}
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)
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}
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}
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struct ImageDownloader {
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/// 使用 Kingfisher 下载图片，带 completion 回调
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// static func downloadImage(
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// from url: URL?,
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// completion: @escaping (UIImage?) -> Void
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// ) {
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// guard let url = url else {
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// completion(nil)
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// return
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// }
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//
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// KingfisherManager.shared.retrieveImage(with: url) { result in
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// switch result {
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// case .success(let value):
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// completion(value.image) // 成功
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// case .failure(let error):
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// print("❌ 图片下载失败: \(error)")
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// completion(nil)
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// }
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// }
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// }
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/// 使用 Kingfisher 下载图片，传入可选 String 链接
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static func downloadImage(
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from urlString: String?,
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completion: @escaping (UIImage?) -> Void
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) {
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guard
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let urlString = urlString,
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let url = URL(string: urlString)
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else {
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completion(nil)
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return
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}
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KingfisherManager.shared.retrieveImage(with: url) { result in
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switch result {
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case .success(let value):
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completion(value.image) // 成功返回 UIImage
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case .failure(let error):
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print("❌ 图片下载失败: \(error)")
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completion(nil)
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}
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}
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}
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}
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