{"id":746,"date":"2025-06-02T11:20:43","date_gmt":"2025-06-05T03:35:42","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=746"},"modified":"2025-06-05T11:20:43","modified_gmt":"2025-06-05T03:35:42","slug":"swift%e7%94%9f%e5%91%bd%e9%80%b1%e6%9c%9f%e6%87%b6%e4%ba%ba%e5%8c%85","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/swift%e7%94%9f%e5%91%bd%e9%80%b1%e6%9c%9f%e6%87%b6%e4%ba%ba%e5%8c%85\/","title":{"rendered":"2025 \u6700\u65b0\u7248 Swift UIView \u751f\u547d\u9031\u671f (Life Cycle) \u5b8c\u6574\u6559\u5b78"},"content":{"rendered":"<p>&#8220;`html<\/p>\n<h1>Swift UIView Life Cycle \u751f\u547d\u9031\u671f<\/h1>\n<p>Swift \u751f\u547d\u9031\u671f (Life Cycle) \u662f\u6307\u7576\u4e00\u500b ViewController \u5373\u5c07\u51fa\u73fe\u6642\u6240\u7d93\u6b77\u7684\u5148\u5f8c\u9806\u5e8f\u3002\u9019\u500b\u904e\u7a0b\u5c31\u50cf\u7528\u9910\u7684\u9806\u5e8f\u4e00\u6a23\uff0c\u901a\u5e38\u662f\u524d\u83dc > \u4e3b\u9910 > \u751c\u9ede\u3002\u5728 Swift \u4e2d\uff0c\u9019\u4e9b\u968e\u6bb5\u5c0d\u65bc\u7ba1\u7406 UI \u53ca\u5176\u884c\u70ba\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2>Swift \u751f\u547d\u9031\u671f\u65b9\u6cd5\u89e3\u6790<\/h2>\n<ul>\n<li><strong>viewDidLoad\uff1a<\/strong><br \/>\n        \u7576\u8996\u5716\u88ab\u8f09\u5165\u5230\u8a18\u61b6\u9ad4\u5f8c\uff0c\u4f46\u756b\u9762\u672a\u88ab\u986f\u793a\u4e4b\u524d\uff0c\u6703\u57f7\u884c <code>viewDidLoad<\/code>\u3002\u9019\u662f\u9032\u884c\u8996\u5716\u521d\u59cb\u5316\u7684\u7406\u60f3\u4f4d\u7f6e\uff0c\u901a\u5e38\u6703\u5728\u9019\u88e1\u8a2d\u7f6e UI \u5143\u4ef6\u7684\u521d\u59cb\u72c0\u614b\u3002\n    <\/li>\n<li><strong>viewWillAppear\uff1a<\/strong><br \/>\n        \u7576\u8996\u5716\u5c07\u8981\u51fa\u73fe\u5728\u756b\u9762\u4e0a\u4e14\u52d5\u756b\u5c1a\u672a\u958b\u59cb\u6642\uff0c\u6703\u547c\u53eb <code>viewWillAppear<\/code>\u3002\u9019\u88e1\u9069\u5408\u57f7\u884c\u8207\u8996\u5716\u986f\u793a\u524d\u7684\u6e96\u5099\u5de5\u4f5c\uff0c\u4f8b\u5982\u66f4\u65b0 UI \u6216\u6aa2\u67e5\u72c0\u614b\u3002\n    <\/li>\n<li><strong>viewDidAppear\uff1a<\/strong><br \/>\n        \u5728 <code>viewWillAppear<\/code> \u7d50\u675f\u5f8c\uff0c\u6b64\u65b9\u6cd5\u88ab\u547c\u53eb\u3002\u53ef\u4ee5\u5728\u9019\u88e1\u958b\u59cb\u8207\u7528\u6236\u7684\u4e92\u52d5\uff0c\u4f8b\u5982\u555f\u52d5\u52d5\u756b\u6216\u8a18\u9304\u4e8b\u4ef6\u3002\n    <\/li>\n<li><strong>viewWillDisappear\uff1a<\/strong><br \/>\n        \u5728\u8996\u5716\u5c07\u88ab\u79fb\u9664\u4e14\u52d5\u756b\u958b\u59cb\u524d\u547c\u53eb <code>viewWillDisappear<\/code>\u3002\u53ef\u4ee5\u5728\u9019\u88e1\u4fdd\u5b58\u72c0\u614b\u6216\u7d50\u675f\u8207\u8996\u5716\u76f8\u95dc\u7684\u4efb\u52d9\u3002\n    <\/li>\n<li><strong>viewDidDisappear\uff1a<\/strong><br \/>\n        \u7576\u8996\u5716\u5df2\u7d93\u6d88\u5931\u5f8c\u6703\u547c\u53eb\u6b64\u65b9\u6cd5\u3002\u5728\u9019\u88e1\u53ef\u4ee5\u9032\u884c\u6e05\u7406\u5de5\u4f5c\uff0c\u4f8b\u5982\u91cb\u653e\u8cc7\u6e90\u3002\n    <\/li>\n<\/ul>\n<h2>\u5be6\u4f5c\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684 <code>ViewController<\/code> \u5be6\u4f5c\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u751f\u547d\u9031\u671f\u65b9\u6cd5\u7684\u4f7f\u7528\uff1a<\/p>\n<pre><code class=\"language-swift line-numbers\">override func viewDidLoad() {\n    super.viewDidLoad()\n    print(\"View has loaded\")\n}\n\noverride func viewWillAppear(_ animated: Bool) {\n    super.viewWillAppear(animated)\n    print(\"View will appear\")\n}\n\noverride func viewDidAppear(_ animated: Bool) {\n    super.viewDidAppear(animated)\n    print(\"View did appear\")\n}\n\noverride func viewWillDisappear(_ animated: Bool) {\n    super.viewWillDisappear(animated)\n    print(\"View will disappear\")\n}\n\noverride func viewDidDisappear(_ animated: Bool) {\n    super.viewDidDisappear(animated)\n    print(\"View did disappear\")\n}\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/i.imgur.com\/WueKHSK.gif\" alt=\"Life Cycle\" title=\"Swift UIView \u751f\u547d\u9031\u671f\u793a\u7bc4\" \/><\/p>\n<h2>Present (\u5361\u7247\u6a21\u5f0f) \u751f\u547d\u9031\u671f<\/h2>\n<p>\u4f7f\u7528 <code>present<\/code> \u65b9\u6cd5\u9032\u884c\u8996\u5716\u8f49\u63db\u7684\u751f\u547d\u9031\u671f\uff1a<\/p>\n<pre><code class=\"language-swift line-numbers\">@IBAction func jumpButtonPress(_ sender: Any) {\n    let vc = TestViewController()\n    self.present(vc, animated: true, completion: nil)\n}\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/i.imgur.com\/WueKHSK.gif\" alt=\"Life Cycle\" title=\"\u5361\u7247\u6a21\u5f0f\u751f\u547d\u9031\u671f\u793a\u7bc4\" \/><\/p>\n<h3>\u6253\u5370\u8f38\u51fa<\/h3>\n<pre><code class=\"language-swift line-numbers\">A viewDidLoad\nA viewWillAppear\nA viewDidAppear\n\/\/ -&gt; \u9ede\u64ca\u8df3\u8f49\nB viewDidLoad\nB viewWillAppear\nB viewDidAppear\nA viewDidDisappear\n<\/code><\/pre>\n<h2>Present (\u5168\u87a2\u5e55\u6a21\u5f0f) \u751f\u547d\u9031\u671f<\/h2>\n<p>\u7576 <code>present<\/code> \u8a2d\u7f6e\u70ba\u5168\u87a2\u5e55\u6a21\u5f0f\uff0c\u751f\u547d\u9031\u671f\u7684\u9806\u5e8f\u6703\u6709\u6240\u4e0d\u540c\uff1a<\/p>\n<pre><code class=\"language-swift line-numbers\">let vc = Test1ViewController()\nvc.modalPresentationStyle = .fullScreen\nself.present(vc, animated: true, completion: nil)\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/i.imgur.com\/8yuUTt0.gif\" alt=\"Life Cycle\" title=\"\u5168\u87a2\u5e55\u6a21\u5f0f\u751f\u547d\u9031\u671f\u793a\u7bc4\" \/><\/p>\n<h3>\u6253\u5370\u8f38\u51fa<\/h3>\n<pre><code class=\"language-swift line-numbers\">A viewDidLoad\nA viewWillAppear\nA viewDidAppear\n\/\/ -&gt; \u9ede\u64ca\u8df3\u8f49\nB viewDidLoad\nA viewWillDisappear\nB viewWillAppear\nB viewDidAppear\nA viewDidDisappear\n<\/code><\/pre>\n<h2>UINavigationController Push \u751f\u547d\u9031\u671f<\/h2>\n<p>\u4f7f\u7528 <code>UINavigationController<\/code> \u9032\u884c\u9801\u9762\u8df3\u8f49\u7684\u751f\u547d\u9031\u671f\uff1a<\/p>\n<pre><code class=\"language-swift line-numbers\">@IBAction func jumpButtonPress(_ sender: Any) {\n    let vc = Test1ViewController()\n    self.navigationController?.pushViewController(vc, animated: true)\n}\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/i.imgur.com\/x6XloGU.gif\" alt=\"Life Cycle\" title=\"UINavigationController Push \u751f\u547d\u9031\u671f\u793a\u7bc4\" \/><\/p>\n<h3>\u6253\u5370\u8f38\u51fa<\/h3>\n<pre><code class=\"language-swift line-numbers\">A viewDidLoad\nA viewWillAppear\nA viewDidAppear\n\/\/ -&gt; \u9ede\u64ca\u8df3\u8f49\nB viewDidLoad\nA viewWillDisappear\nB viewWillAppear\nB viewDidAppear\nA viewDidDisappear\n<\/code><\/pre>\n<h2>present vs push \u7684\u5dee\u7570<\/h2>\n<ul>\n<li>present: \u7b49\u5f85 B \u7684 <code>viewDidAppear<\/code> \u5f8c\u624d\u6703\u89f8\u767c A \u7684 <code>viewDidDisappear<\/code><\/li>\n<li>push: \u5148\u89f8\u767c A \u7684 <code>viewDidDisappear<\/code> \u5f8c\u624d\u6703\u89f8\u767c B \u7684 <code>viewDidAppear<\/code><\/li>\n<\/ul>\n<h2>\u5e38\u898b\u554f\u984c\u89e3\u7b54<\/h2>\n<h3>Q1: Swift \u751f\u547d\u9031\u671f\u70ba\u4ec0\u9ebc\u91cd\u8981\uff1f<\/h3>\n<p>Swift \u751f\u547d\u9031\u671f\u5e6b\u52a9\u958b\u767c\u8005\u7ba1\u7406 UI \u5143\u4ef6\u7684\u72c0\u614b\u8207\u884c\u70ba\uff0c\u78ba\u4fdd\u61c9\u7528\u7a0b\u5f0f\u7684\u6d41\u66a2\u6027\u8207\u7a69\u5b9a\u6027\u3002<\/p>\n<h3>Q2: \u5982\u4f55\u5728\u751f\u547d\u9031\u671f\u4e2d\u8655\u7406\u8cc7\u6599\uff1f<\/h3>\n<p>\u5728 <code>viewDidLoad<\/code> \u4e2d\u52a0\u8f09\u8cc7\u6599\uff0c\u4e26\u5728 <code>viewWillAppear<\/code> \u4e2d\u66f4\u65b0 UI\uff0c\u9019\u6a23\u78ba\u4fdd\u5728\u8996\u5716\u986f\u793a\u524d\u8cc7\u6599\u5df2\u6b63\u78ba\u914d\u7f6e\u3002<\/p>\n<h3>Q3: \u662f\u5426\u53ef\u4ee5\u81ea\u5b9a\u7fa9\u751f\u547d\u9031\u671f\u65b9\u6cd5\uff1f<\/h3>\n<p>\u4e0d\u53ef\u4ee5\uff0c\u4f46\u53ef\u4ee5\u5728\u6a19\u6e96\u751f\u547d\u9031\u671f\u65b9\u6cd5\u4e2d\u6dfb\u52a0\u81ea\u5b9a\u7fa9\u908f\u8f2f\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n<p>&#8220;`<br \/>\n&#8212;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;`html Swift UIView&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[5],"tags":[],"class_list":["post-746","post","type-post","status-publish","format-aside","hentry","category-swift","post_format-post-format-aside"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-c2","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/746","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=746"}],"version-history":[{"count":8,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/746\/revisions"}],"predecessor-version":[{"id":7563,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/746\/revisions\/7563"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=746"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}