{"id":7548,"date":"2025-05-31T14:26:47","date_gmt":"2025-06-05T07:26:46","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=7548"},"modified":"2025-06-05T14:26:47","modified_gmt":"2025-06-05T07:26:46","slug":"https-badgameshow-com-steven-436","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/https-badgameshow-com-steven-436\/","title":{"rendered":"\ud83c\udfa8 2025 \u6700\u65b0 Swift UICollectionView \u5b8c\u6574\u6559\u5b78 | \u7db2\u683c\u6392\u5217\u5716\u7247 \ud83c\udfa8"},"content":{"rendered":"

<\/p>\n

\ud83c\udfa8 2025 \u6700\u65b0 Swift UICollectionView \u5b8c\u6574\u6559\u5b78 | \u7db2\u683c\u6392\u5217\u5716\u7247 \ud83c\udfa8<\/h1>\n

\u5728 iOS \u958b\u767c\u4e2d\uff0cUICollectionView \u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u8f15\u9b06\u5730\u5c07\u5716\u7247\u6216\u5176\u4ed6\u5143\u7d20\u6392\u5217\u6210\u7db2\u683c\u6a23\u5f0f\uff0c\u4f7f App \u7684\u754c\u9762\u66f4\u52a0\u7f8e\u89c0\u3002\u5728\u9019\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 Swift \u4f86\u5efa\u7acb\u4e00\u500b UICollectionView\uff0c\u4e26\u5c07\u5716\u7247\u6392\u5217\u6210\u7db2\u683c\u6a23\u5f0f\uff0c\u5305\u542b\u6700\u65b0\u7684\u8a9e\u6cd5\u8207\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n

\u5efa\u7acb UICollectionView<\/h2>\n

\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5efa\u7acb\u4e00\u500b UICollectionView\uff0c\u4e26\u5c07\u5b83\u653e\u7f6e\u5728\u6211\u5011\u7684 View Controller \u4e2d\u3002\u9019\u500b\u904e\u7a0b\u6709\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n

1. \u5efa\u7acb UICollectionViewFlowLayout
\n2. \u8a2d\u5b9a UICollectionView \u7684\u6846\u67b6\u8207\u5927\u5c0f
\n3. \u8a2d\u5b9a\u6bcf\u500b cell \u7684\u5927\u5c0f
\n4. \u6dfb\u52a0 UICollectionView \u5230 View Controller
\n5. \u8a2d\u5b9a delegate \u548c dataSource<\/p>\n

\u4ee5\u4e0b\u662f\u5177\u9ad4\u7684\u5be6\u4f5c\u6b65\u9a5f\uff1a<\/p>\n

let layout = UICollectionViewFlowLayout()\nlayout.itemSize = CGSize(width: 100, height: 100) \/\/ \u6bcf\u500b cell \u7684\u5927\u5c0f\nlet collectionView = UICollectionView(frame: self.view.bounds, collectionViewLayout: layout)\n\n\/\/ \u8a2d\u5b9a\u80cc\u666f\u984f\u8272\ncollectionView.backgroundColor = .white\n\n\/\/ \u6dfb\u52a0\u5230 View Controller\nself.view.addSubview(collectionView)\n\n\/\/ \u8a2d\u5b9a delegate \u548c dataSource\ncollectionView.delegate = self\ncollectionView.dataSource = self\n\n\/\/ \u8a3b\u518a UICollectionViewCell\ncollectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: \"Cell\")\n<\/code><\/pre>\n
\u52a0\u5165\u5716\u7247<\/h2>\n
\u63a5\u8457\uff0c\u6211\u5011\u9700\u8981\u5c07\u5716\u7247\u52a0\u5165\u5230 UICollectionView \u4e2d\u3002\u9996\u5148\uff0c\u5efa\u7acb\u4e00\u500b\u5716\u7247\u9663\u5217\uff0c\u7136\u5f8c\u5c07\u5716\u7247\u8f09\u5165\u5230\u9019\u500b\u9663\u5217\u4e2d\u3002<\/p>\n
var images: [UIImage] = [\n    UIImage(named: \"image1\")!,\n    UIImage(named: \"image2\")!,\n    UIImage(named: \"image3\")!\n]\n<\/code><\/pre>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5be6\u4f5c UICollectionView \u7684 delegate \u548c dataSource \u65b9\u6cd5\uff0c\u4ee5\u4fbf\u5c07\u5716\u7247\u986f\u793a\u5728 UICollectionView \u4e2d\uff1a<\/p>\n
extension YourViewController: UICollectionViewDelegate, UICollectionViewDataSource {\n    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {\n        return images.count\n    }\n\n    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {\n        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: \"Cell\", for: indexPath)\n        \n        \/\/ \u78ba\u4fdd cell \u6709\u4e00\u500b UIImageView\n        let imageView = cell.viewWithTag(1) as? UIImageView ?? UIImageView(frame: cell.bounds)\n        imageView.image = images[indexPath.item]\n        imageView.contentMode = .scaleAspectFill\n        imageView.clipsToBounds = true\n        \n        cell.contentView.addSubview(imageView)\n        return cell\n    }\n}\n<\/code><\/pre>\n
\u932f\u8aa4\u6392\u9664\u8207\u6700\u4f73\u5be6\u8e10<\/h2>\n
\u5728\u5be6\u4f5c UICollectionView \u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u5e38\u898b\u554f\u984c\uff1a<\/p>\n
1. **\u5716\u7247\u672a\u986f\u793a**\uff1a\u78ba\u4fdd\u5716\u7247\u540d\u7a31\u6b63\u78ba\u4e14\u5df2\u6b63\u78ba\u8f09\u5165\u5230\u5c08\u6848\u4e2d\u3002
\n2. **cell \u5927\u5c0f\u4e0d\u6b63\u78ba**\uff1a\u8acb\u6aa2\u67e5 `layout.itemSize` \u7684\u8a2d\u5b9a\uff0c\u78ba\u4fdd\u5b83\u7b26\u5408\u4f60\u7684\u9700\u6c42\u3002
\n3. **\u6ed1\u52d5\u4e0d\u6d41\u66a2**\uff1a\u5982\u679c UICollectionView \u5305\u542b\u5927\u91cf\u5716\u7247\uff0c\u8003\u616e\u4f7f\u7528 lazy loading \u6216\u5716\u7247\u58d3\u7e2e\u6280\u8853\u4f86\u512a\u5316\u6548\u80fd\u3002<\/p>\n
\u5ef6\u4f38\u61c9\u7528<\/h2>\n
UICollectionView \u4e0d\u50c5\u9650\u65bc\u986f\u793a\u5716\u7247\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u5b83\u4f86\u5c55\u793a\u591a\u7a2e\u8cc7\u6599\u578b\u614b\uff0c\u4f8b\u5982\uff1a<\/p>\n
– \u5546\u54c1\u5217\u8868
\n– \u806f\u7d61\u4eba\u8cc7\u8a0a
\n– \u81ea\u8a02\u7684 UI \u5143\u7d20<\/p>\n
\u9019\u4f7f\u5f97 UICollectionView \u6210\u70ba\u4e00\u500b\u975e\u5e38\u9748\u6d3b\u7684 UI \u5143\u4ef6\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528 Swift \u4f86\u5efa\u7acb\u4e00\u500b UICollectionView\uff0c\u4e26\u5c07\u5716\u7247\u6392\u5217\u6210\u7db2\u683c\u6a23\u5f0f\u3002\u6211\u5011\u5f9e\u5efa\u7acb UICollectionViewFlowLayout \u958b\u59cb\uff0c\u8a2d\u5b9a UICollectionView \u7684\u5927\u5c0f\u548c\u6bcf\u500b cell \u7684\u5927\u5c0f\uff0c\u7136\u5f8c\u5efa\u7acb\u4e86\u4e00\u500b\u5716\u7247\u9663\u5217\u4e26\u5be6\u4f5c UICollectionView \u7684 delegate \u548c dataSource \u65b9\u6cd5\u3002\u9019\u6a23\uff0c\u4f60\u5c31\u80fd\u8f15\u9b06\u5730\u5c55\u793a\u5716\u7247\uff0c\u8b93\u4f60\u7684 App \u66f4\u5177\u5438\u5f15\u529b\u3002<\/p>\n
Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n
Q1: UICollectionView \u548c UITableView \u6709\u4ec0\u9ebc\u5340\u5225\uff1f<\/h3>\n
A1: UICollectionView \u5141\u8a31\u81ea\u7531\u6392\u5217\u5143\u7d20\uff0c\u9069\u5408\u986f\u793a\u591a\u7dad\u5ea6\u7684\u8cc7\u6599\uff0c\u800c UITableView \u5247\u662f\u55ae\u7dad\u5ea6\u7684\u5217\u8868\u986f\u793a\u3002<\/p>\n
Q2: \u5982\u4f55\u5728 UICollectionView \u4e2d\u4f7f\u7528\u4e0d\u540c\u5927\u5c0f\u7684 cell\uff1f<\/h3>\n
A2: \u53ef\u4ee5\u900f\u904e\u5be6\u4f5c `sizeForItemAt` \u65b9\u6cd5\u4f86\u8a2d\u5b9a\u6bcf\u500b cell \u7684\u5927\u5c0f\uff0c\u6839\u64da\u9700\u8981\u52d5\u614b\u8abf\u6574\u3002<\/p>\n
Q3: UICollectionView \u7684\u6027\u80fd\u512a\u5316\u6709\u4ec0\u9ebc\u5efa\u8b70\uff1f<\/h3>\n
A3: \u4f7f\u7528 image caching\u3001\u6e1b\u5c11 cell \u7684\u8907\u96dc\u5ea6\u3001\u4e26\u78ba\u4fdd\u4f7f\u7528\u81ea\u8a02\u7684 cell \u4f86\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n
\"\ud83c\udfa8Swift
\n—<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2SwiftUICollectionView\u7db2\u683c\u6392\u5217\u5716\u7247\uff0c\u53ef\u4ee5\u8b93\u4f60\u5feb\u901f\u5730\u5c07\u5716\u7247\u6392\u5217\u6210\u7db2\u683c\uff0c\u4e26\u4e14\u53ef\u4ee5\u81ea\u8a02\u6bcf\u500b\u7db2\u683c\u7684\u5927\u5c0f\uff0c\u4ee5\u53ca\u6392\u5217\u7684\u65b9\u5f0f\u3002<\/p>\n","protected":false},"author":1,"featured_media":7546,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[174,5],"tags":[173,9],"class_list":["post-7548","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ios","category-swift","tag-ios","tag-swift"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2023\/02\/\ud83c\udfa8Swift-UICollectionView-\u7db2\u683c\u6392\u5217\u5716\u7247-\ud83c\udfa8_1675477410.982274.webp","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1XK","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/7548","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=7548"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/7548\/revisions"}],"predecessor-version":[{"id":13560,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/7548\/revisions\/13560"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/7546"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=7548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=7548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=7548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}