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fix image view

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This commit is contained in:
anlicheng 2025-04-14 11:16:52 +08:00
parent 91718319f8
commit 4fb871ddb9
3 changed files with 112 additions and 44 deletions
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12
dimensionhub/Core/CacheManager.swift
View File

@ -37,6 +37,18 @@ final class CacheManager {
}
}
// 预加载图片
func preloadImage(url: String) async {
guard !self.fileExists(urlString: url) else {
return
}
if let filename = self.getCacheFileName(urlString: url),
let data = try? await self.downloadImage(from: url) {
try? self.saveCacheFile(filename: filename, data: data)
}
}
// 判断缓存文件是否存在
func fileExists(urlString: String) -> Bool {
guard let cacheFileName = getCacheFileName(urlString: urlString) else {

73
dimensionhub/Views/FlexImage.swift Normal file
View File

@ -0,0 +1,73 @@
//
// FlexImage.swift
// dimensionhub
//
// Created by 安礼成 on 2025/4/14.
//
import SwiftUI
struct FlexImage: View {
let urlString: String
let width: CGFloat
let height: CGFloat
let placeholder: String
let mode: ImageMode
// 图片加载模式
enum ImageMode {
case remote(String)
case local(Data)
}
init(urlString: String, width: CGFloat, height: CGFloat, placeholder: String) {
self.urlString = urlString
self.width = width
self.height = height
self.placeholder = placeholder
let cacheManager = CacheManager.shared
if let data = cacheManager.readFileContents(urlString: urlString) {
self.mode = .local(data)
} else {
Task.detached {
await cacheManager.preloadImage(url: urlString)
}
self.mode = .remote(urlString)
}
}
var body: some View {
switch self.mode {
case .remote(let url):
AsyncImage(url: URL(string: url)) { phase in
switch phase {
case .empty:
ProgressView()
case .success(let image):
image
.resizable()
.aspectRatio(contentMode: .fill)
.frame(width: width, height: height)
.clipped()
default:
Image(placeholder)
.resizable()
.aspectRatio(contentMode: .fill)
.clipped()
}
}
case .local(let data):
Image(uiImage: UIImage(data: data)!)
.resizable()
.aspectRatio(contentMode: .fill)
.frame(width: width, height: height)
.clipped()
}
}
}
#Preview {
//FlexImage()
}

71
dimensionhub/Views/Index/IndexMainView.swift
View File

@ -189,52 +189,35 @@ extension IndexMainView {
Button(action: {
appNav.append(dest: .detail(id: item.id))
}) {
AsyncImage(url: URL(string: item.thumb)) { phase in
switch phase {
case .empty:
ProgressView()
case .success(let image):
image
.resizable()
.aspectRatio(contentMode: .fill)
.frame(width: 370, height: 180)
.clipped()
default:
Image("ph_img_big")
.resizable()
.aspectRatio(contentMode: .fill)
.clipped()
FlexImage(urlString: item.thumb, width: 370, height: 180, placeholder: "ph_img_big")
.frame(width: 370, height: 180)
.overlay(alignment: .topLeading) {
VStack(alignment: .leading, spacing: 8) {
Text(item.name)
.font(.system(size: 16))
.foregroundColor(.white)
.lineLimit(1)
Text(item.status)
.font(.system(size: 12))
.foregroundColor(.white)
.lineLimit(1)
}
.padding(5)
.background(
Color.black.opacity(0.6)
)
.cornerRadius(5)
.padding(8)
}
}
.frame(width: 370, height: 180)
.overlay(alignment: .topLeading) {
VStack(alignment: .leading, spacing: 8) {
Text(item.name)
.font(.system(size: 16))
.foregroundColor(.white)
.lineLimit(1)
.background(GeometryReader { geometry in
let height = geometry.size.height
let minY = geometry.frame(in: .named("indexScrollView")).minY
let y = minY >= 0 ? minY : minY + height
Text(item.status)
.font(.system(size: 12))
.foregroundColor(.white)
.lineLimit(1)
}
.padding(5)
.background(
Color.black.opacity(0.6)
)
.cornerRadius(5)
.padding(8)
}
.background(GeometryReader { geometry in
let height = geometry.size.height
let minY = geometry.frame(in: .named("indexScrollView")).minY
let y = minY >= 0 ? minY : minY + height
Color.clear
.preference(key: DramaGroupElementPreferenceKey.self, value: [ group.group_id : y])
})
Color.clear
.preference(key: DramaGroupElementPreferenceKey.self, value: [ group.group_id : y])
})
}
}
}