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add image cache

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This commit is contained in:
cheykrym 2025-08-14 19:49:42 +03:00
parent 769cdfdbc7
commit 64f59c8e91
3 changed files with 42 additions and 1 deletions
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17
Shared/Components/RemoteImageView.swift
View File

@ -1,11 +1,13 @@
import SwiftUI
import Combine
// 1. Класс для загрузки изображения
// 1. Класс для загрузки изображения с поддержкой кеширования
class ImageLoader: ObservableObject {
@Published var image: UIImage?
private var cancellable: AnyCancellable?
private let url: URL
private let cache = ImageCacheManager.shared
init(url: URL) {
self.url = url
@ -16,9 +18,22 @@ class ImageLoader: ObservableObject {
}
func load() {
// Проверяем, есть ли изображение в кеше
if let cachedImage = cache.get(forKey: url.absoluteString) {
self.image = cachedImage
return
}
// Если в кеше нет, загружаем из сети
cancellable = URLSession.shared.dataTaskPublisher(for: url)
.map { UIImage(data: $0.data) }
.replaceError(with: nil)
.handleEvents(receiveOutput: { [weak self] image in
// Сохраняем загруженное изображение в кеш
if let image = image, let key = self?.url.absoluteString {
self?.cache.set(image, forKey: key)
}
})
.receive(on: DispatchQueue.main)
.assign(to: \.image, on: self)
}

22
Shared/Services/ImageCacheManager.swift Normal file
View File

@ -0,0 +1,22 @@
import UIKit
// Менеджер для кеширования изображений в памяти
class ImageCacheManager {
static let shared = ImageCacheManager()
// NSCache будет хранить UIImage по ключу NSString (URL)
// Он автоматически удаляет объекты при нехватке памяти
private let cache = NSCache<NSString, UIImage>()
private init() {}
// Добавить изображение в кеш
func set(_ image: UIImage, forKey key: String) {
cache.setObject(image, forKey: key as NSString)
}
// Получить изображение из кеша
func get(forKey key: String) -> UIImage? {
return cache.object(forKey: key as NSString)
}
}

4
yobble.xcodeproj/project.pbxproj
View File

@ -38,6 +38,7 @@
1A9B017C2E4C087F00887E0B /* SideMenuView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1A9B017B2E4C087F00887E0B /* SideMenuView.swift */; };
1A9E4FB32E4D6A67002249D6 /* ThemeManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1A9E4FB22E4D6A67002249D6 /* ThemeManager.swift */; };
1A9E4FD72E4E47EF002249D6 /* RemoteImageView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1A9E4FD62E4E47EF002249D6 /* RemoteImageView.swift */; };
1A9E4FDF2E4E4AA1002249D6 /* ImageCacheManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1A9E4FDE2E4E4AA1002249D6 /* ImageCacheManager.swift */; };
1AB4F8CD2E22E341002B6E40 /* AccountShareSheet.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1AB4F8CC2E22E341002B6E40 /* AccountShareSheet.swift */; };
1AB4F8F32E22EC9F002B6E40 /* FollowersView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1AB4F8F22E22EC9F002B6E40 /* FollowersView.swift */; };
1AB4F8F72E22ECAC002B6E40 /* FollowingView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1AB4F8F62E22ECAC002B6E40 /* FollowingView.swift */; };
@ -94,6 +95,7 @@
1A9B017B2E4C087F00887E0B /* SideMenuView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SideMenuView.swift; sourceTree = "<group>"; };
1A9E4FB22E4D6A67002249D6 /* ThemeManager.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ThemeManager.swift; sourceTree = "<group>"; };
1A9E4FD62E4E47EF002249D6 /* RemoteImageView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RemoteImageView.swift; sourceTree = "<group>"; };
1A9E4FDE2E4E4AA1002249D6 /* ImageCacheManager.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ImageCacheManager.swift; sourceTree = "<group>"; };
1AB4F8CC2E22E341002B6E40 /* AccountShareSheet.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AccountShareSheet.swift; sourceTree = "<group>"; };
1AB4F8F22E22EC9F002B6E40 /* FollowersView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FollowersView.swift; sourceTree = "<group>"; };
1AB4F8F62E22ECAC002B6E40 /* FollowingView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FollowingView.swift; sourceTree = "<group>"; };
@ -231,6 +233,7 @@
1A7940E52DF7B341002569DA /* Services */ = {
isa = PBXGroup;
children = (
1A9E4FDE2E4E4AA1002249D6 /* ImageCacheManager.swift */,
1A9E4FB22E4D6A67002249D6 /* ThemeManager.swift */,
1A7940E12DF7B1C5002569DA /* KeychainService.swift */,
);
@ -437,6 +440,7 @@
1A7940C62DF7A98E002569DA /* ContactsTab.swift in Sources */,
1ACE61092E22F57100B37AC5 /* AppPreferencesView.swift in Sources */,
1ACE61052E22F56800B37AC5 /* SecuritySettingsView.swift in Sources */,
1A9E4FDF2E4E4AA1002249D6 /* ImageCacheManager.swift in Sources */,
1A9B016E2E4BFB9000887E0B /* NewHomeTabViewModel.swift in Sources */,
1A7940E72DF7B5E5002569DA /* SplashScreenView.swift in Sources */,
1A7940B02DF77E26002569DA /* LoginView.swift in Sources */,