{"id":7226,"date":"2025-05-29T14:20:09","date_gmt":"2025-06-05T07:09:09","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=7226"},"modified":"2025-06-05T14:20:09","modified_gmt":"2025-06-05T07:09:09","slug":"https-badgameshow-com-steven-286","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/https-badgameshow-com-steven-286\/","title":{"rendered":"Swift UIScrollView \u6efe\u52d5\u8996\u5716\u7684\u5be6\u4f5c\u8207\u6700\u4f73\u5be6\u8e10\uff082025 \u6700\u65b0\u6307\u5357\uff09"},"content":{"rendered":"

“`html
\n<\/p>\n

\u5f15\u8a00<\/h2>\n

Swift UIScrollView \u6efe\u52d5\u8996\u5716\u662f iOS \u958b\u767c\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u529f\u80fd\u4e4b\u4e00\u3002\u5b83\u4f7f\u5f97\u8cc7\u6599\u4ee5\u6efe\u52d5\u7684\u65b9\u5f0f\u5448\u73fe\uff0c\u6975\u5927\u5730\u63d0\u5347\u4e86\u7528\u6236\u7684\u95b1\u8b80\u9ad4\u9a57\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 Swift \u4f86\u5be6\u4f5c UIScrollView \u6efe\u52d5\u8996\u5716\uff0c\u4e26\u5206\u4eab 2025 \u6700\u65b0\u7684\u8a9e\u6cd5\u8207\u6700\u4f73\u5be6\u8e10\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u5feb\u901f\u958b\u767c\u51fa\u9ad8\u6548\u7684\u6efe\u52d5\u8996\u5716\u529f\u80fd\u3002<\/p>\n

\u6b65\u9a5f\u4e00\uff1a\u5728 Storyboard \u4e2d\u6dfb\u52a0 UIScrollView<\/h2>\n

\u9996\u5148\uff0c\u5728\u4f60\u7684 Storyboard \u4e2d\u6dfb\u52a0\u4e00\u500b UIScrollView\u3002\u6839\u64da\u4f60\u7684\u8a2d\u8a08\u9700\u6c42\u8a2d\u5b9a\u5b83\u7684\u5927\u5c0f\uff0c\u4e26\u5c07\u5176\u62d6\u653e\u5230 ViewController \u4e2d\u3002\u78ba\u4fdd\u5c07 UIScrollView \u7684 delegate \u6307\u5b9a\u70ba ViewController\u3002<\/p>\n

\u6b65\u9a5f\u4e8c\uff1a\u5be6\u4f5c UIScrollViewDelegate<\/h2>\n

\u5728 ViewController \u4e2d\u5be6\u4f5c UIScrollViewDelegate\uff0c\u4e26\u52a0\u5165\u4ee5\u4e0b\u7a0b\u5f0f\u78bc\u4ee5\u8a2d\u5b9a scrollView \u7684\u5c6c\u6027\uff1a<\/p>\n

override func viewDidLoad() {\n    super.viewDidLoad()\n    scrollView.delegate = self\n    scrollView.contentSize = CGSize(width: self.view.frame.width, height: self.view.frame.height * 2)\n}\n<\/code><\/pre>\n
\u9019\u6bb5\u7a0b\u5f0f\u78bc\u5c07 scrollView \u7684 contentSize \u8a2d\u5b9a\u70ba ViewController \u9ad8\u5ea6\u7684\u5169\u500d\uff0c\u8b93\u7528\u6236\u53ef\u4ee5\u4e0a\u4e0b\u6efe\u52d5\u3002<\/p>\n
\u6b65\u9a5f\u4e09\uff1a\u8655\u7406\u6efe\u52d5\u4e8b\u4ef6<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u65b0\u589e\u4ee5\u4e0b\u7a0b\u5f0f\u78bc\u4f86\u76e3\u63a7\u6efe\u52d5\u4e8b\u4ef6\uff1a<\/p>\n
func scrollViewDidScroll(_ scrollView: UIScrollView) {\n    let offsetY = scrollView.contentOffset.y\n    if offsetY < 0 {\n        scrollView.contentOffset.y = 0\n    }\n}\n<\/code><\/pre>\n
\u9019\u6bb5\u7a0b\u5f0f\u78bc\u6703\u6aa2\u67e5\u7528\u6236\u7684\u6efe\u52d5\u4f4d\u7f6e\uff0c\u82e5\u8d85\u51fa\u7bc4\u570d\uff0c\u5247\u5c07 contentOffset \u8a2d\u5b9a\u70ba 0\uff0c\u78ba\u4fdd\u7528\u6236\u64cd\u4f5c\u7684\u6d41\u66a2\u6027\u3002<\/p>\n
\u6b65\u9a5f\u56db\uff1a\u7d50\u675f\u6efe\u52d5\u6642\u7684\u8655\u7406<\/h2>\n
\u6700\u5f8c\uff0c\u4f7f\u7528\u4ee5\u4e0b\u7a0b\u5f0f\u78bc\u4f86\u8655\u7406\u7528\u6236\u505c\u6b62\u6efe\u52d5\u5f8c\u7684\u60c5\u6cc1\uff1a<\/p>\n
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {\n    let offsetY = scrollView.contentOffset.y\n    if offsetY > 0 {\n        scrollView.contentOffset.y = 0\n    }\n}\n<\/code><\/pre>\n
\u9019\u6bb5\u7a0b\u5f0f\u78bc\u5728\u7528\u6236\u505c\u6b62\u6efe\u52d5\u6642\u518d\u6b21\u6aa2\u67e5 position\uff0c\u4fdd\u8b49\u7528\u6236\u53ef\u4ee5\u6efe\u52d5\u5230\u6b63\u78ba\u7684\u4f4d\u7f6e\u3002<\/p>\n
\u932f\u8aa4\u6392\u9664\u63d0\u793a<\/h2>\n
\u5982\u679c\u5728\u6efe\u52d5\u4e2d\u9047\u5230\u554f\u984c\uff0c\u8acb\u6aa2\u67e5\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n
    \n
  • \u78ba\u4fdd UIScrollView \u7684 delegate \u88ab\u6b63\u78ba\u8a2d\u7f6e\u3002<\/li>\n
  • \u78ba\u8a8d contentSize \u7684\u8a2d\u5b9a\u662f\u5426\u5408\u7406\uff0c\u907f\u514d\u8a2d\u70ba 0\u3002<\/li>\n
  • \u6aa2\u67e5\u7d04\u675f\u689d\u4ef6\u662f\u5426\u6b63\u78ba\uff0c\u53ef\u80fd\u6703\u5f71\u97ff UIScrollView \u7684\u986f\u793a\u3002<\/li>\n<\/ul>\n
    \u5ef6\u4f38\u61c9\u7528<\/h2>\n
    UIScrollView \u4e0d\u50c5\u53ef\u4ee5\u7528\u65bc\u7c21\u55ae\u7684\u6efe\u52d5\u8996\u5716\uff0c\u9084\u53ef\u4ee5\u8207\u5176\u4ed6\u5143\u4ef6\u7d50\u5408\u4f7f\u7528\uff0c\u5982 UIImageView \u9032\u884c\u5716\u7247\u700f\u89bd\uff0c\u6216\u662f\u8207 UICollectionView \u7d50\u5408\u4ee5\u5be6\u73fe\u66f4\u8907\u96dc\u7684 UI\u3002<\/p>\n
    \"Swift<\/p>\n
    \u5e38\u898b\u554f\u984c\u89e3\u7b54 (Q&A)<\/h2>\n
    Q1: UIScrollView \u7684 contentSize \u5982\u4f55\u8a2d\u5b9a\uff1f<\/h3>\n
    A1: contentSize \u61c9\u6839\u64da\u4f60\u5e0c\u671b\u6efe\u52d5\u7684\u5167\u5bb9\u5927\u5c0f\u4f86\u8a2d\u5b9a\uff0c\u901a\u5e38\u662f UIView \u7684\u5bec\u5ea6\u548c\u9ad8\u5ea6\u7684\u7d44\u5408\u3002<\/p>\n
    Q2: UIScrollView \u7684 delegate \u70ba\u4f55\u8981\u8a2d\u7f6e\uff1f<\/h3>\n
    A2: \u8a2d\u7f6e delegate \u662f\u70ba\u4e86\u76e3\u63a7 UIScrollView \u7684\u6efe\u52d5\u4e8b\u4ef6\uff0c\u9019\u6a23\u53ef\u4ee5\u53ca\u6642\u4f5c\u51fa\u53cd\u61c9\uff0c\u6bd4\u5982\u5be6\u73fe\u81ea\u5b9a\u7fa9\u7684\u6efe\u52d5\u884c\u70ba\u3002<\/p>\n
    Q3: \u5982\u4f55\u5728 UIScrollView \u4e2d\u5be6\u73fe\u591a\u500b\u5b50\u8996\u5716\u7684\u6efe\u52d5\uff1f<\/h3>\n
    A3: \u53ef\u4ee5\u5c07\u591a\u500b\u5b50\u8996\u5716\u6dfb\u52a0\u5230 UIScrollView \u4e2d\uff0c\u4e26\u78ba\u4fdd\u8a2d\u5b9a contentSize \u5305\u542b\u6240\u6709\u5b50\u8996\u5716\u7684\u7e3d\u5927\u5c0f\u3002<\/p>\n
    ```
    \n---<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39SwiftUIScrollView\u6efe\u52d5\u8996\u5716\u7684\u57fa\u672c\u64cd\u4f5c\uff0c\u8b93\u4f60\u53ef\u4ee5\u5feb\u901f\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528UIScrollView\u4f86\u5275\u5efa\u6efe\u52d5\u8996\u5716\uff0c\u4e26\u638c\u63e1\u6efe\u52d5\u8996\u5716\u7684\u57fa\u672c\u64cd\u4f5c\u3002<\/p>\n","protected":false},"author":1,"featured_media":7225,"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-7226","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\/Swift-UIScrollView\u6efe\u52d5\u8996\u5716-\ud83d\udcdc_1675405332.549375.webp","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1Sy","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/7226","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=7226"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/7226\/revisions"}],"predecessor-version":[{"id":13108,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/7226\/revisions\/13108"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/7225"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=7226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=7226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=7226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}