{"id":73313,"date":"2026-02-07T13:49:23","date_gmt":"2026-02-07T05:49:23","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/73313.html"},"modified":"2026-02-07T13:49:23","modified_gmt":"2026-02-07T05:49:23","slug":"ios%e5%bc%80%e5%8f%91-swiftui-16%ef%bc%9a%e9%a1%b5%e9%9d%a2%e6%95%b0%e6%8d%ae%e4%ba%a4%e4%ba%92-%e8%87%aa%e5%8a%a8%e6%8c%81%e4%b9%85%e5%8c%96","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/73313.html","title":{"rendered":"iOS\u5f00\u53d1 SwiftUI 16\uff1a\u9875\u9762\u6570\u636e\u4ea4\u4e92 \u81ea\u52a8\u6301\u4e45\u5316"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"429\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260207054922-6986d26279d80.png\" width=\"534\" \/><\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 &#064;\u662f\u5c5e\u6027\u5305\u88c5\u5668&#xff0c;\u901a\u8fc7\u4e00\u4e2a\u6307\u793a\u5668\u6765\u5b9e\u73b0\u590d\u6742\u7684\u540e\u53f0\u4ee3\u7801&#xff0c;\u8fd9\u662f\u975e\u5e38\u5148\u8fdb\u7684\u3002<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u6211\u4eec\u5df2\u7ecf\u719f\u6089&#064;State&#xff0c;\u7528\u6765\u628a\u754c\u9762\u5143\u7d20\u548c\u6570\u636e\u5173\u8054\u8d77\u6765&#xff0c;\u7531\u6846\u67b6\u81ea\u52a8\u5b9e\u73b0\u754c\u9762\u548c\u6570\u636e\u7684\u8054\u52a8\u3002\u5728\u5176\u4ed6\u8bed\u8a00\u4e2d\u7c7b\u4f3c\u529f\u80fd\u53ef\u80fd\u88ab\u79f0\u4e3a\u201c\u7ed1\u5b9a\u201d&#xff0c;\u800c\u5728SwiftUI\u91cc&#064;Binding\u5219\u8868\u793a\u5173\u8054\u7684\u5916\u90e8\u6570\u636e\u3002<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u7b26\u53f7$\u7528\u6765\u751f\u6210\u53d8\u91cf\u7684\u7ed1\u5b9a&#xff0c;\u5b9e\u73b0\u53cc\u5411\u6570\u636e\u4ea4\u4e92\u3002<\/p>\n<p id=\"main-toc\">\u76ee\u5f55<\/p>\n<p id=\"%40State%20%E5%86%85%E9%83%A8%E6%95%B0%E6%8D%AE%E7%BB%91%E5%AE%9A-toc\" style=\"margin-left:0px\">&#064;State \u5185\u90e8\u6570\u636e\u7ed1\u5b9a<\/p>\n<p id=\"%40Binding%20%E5%85%B3%E8%81%94%E5%A4%96%E9%83%A8%E6%95%B0%E6%8D%AE-toc\" style=\"margin-left:0px\">&#064;Binding \u5173\u8054\u5916\u90e8\u6570\u636e<\/p>\n<p id=\"%40EnvironmentObject%20%E5%85%A8%E5%B1%80%E5%8F%98%E9%87%8F-toc\" style=\"margin-left:0px\">&#064;EnvironmentObject \u5168\u5c40\u53d8\u91cf<\/p>\n<p id=\"%40AppStorage%20%E8%87%AA%E5%8A%A8%E6%8C%81%E4%B9%85%E5%8C%96-toc\" style=\"margin-left:0px\">&#064;AppStorage \u81ea\u52a8\u6301\u4e45\u5316<\/p>\n<p id=\"%40EnvironmentObject%20%E7%A9%B6%E7%AB%9F%E6%98%AF%E4%BB%80%E4%B9%88-toc\" style=\"margin-left:0px\">&#064;EnvironmentObject \u7a76\u7adf\u662f\u4ec0\u4e48<\/p>\n<p id=\"%E5%AE%8C%E6%95%B4%E7%A4%BA%E4%BE%8B-toc\" style=\"margin-left:0px\">\u5b8c\u6574\u793a\u4f8b<\/p>\n<hr id=\"hr-toc\" \/>\n<h2 id=\"%40State%20%E5%86%85%E9%83%A8%E6%95%B0%E6%8D%AE%E7%BB%91%E5%AE%9A\">&#064;State \u5185\u90e8\u6570\u636e\u7ed1\u5b9a<\/h2>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u5728\u89c6\u56fe\u5185\u5b9a\u4e49&#xff0c;\u5176\u4ed6\u89c6\u56fe\u4e0d\u53ef\u76f4\u63a5\u8bbf\u95ee\u3002<\/p>\n<h2 id=\"%40Binding%20%E5%85%B3%E8%81%94%E5%A4%96%E9%83%A8%E6%95%B0%E6%8D%AE\">&#064;Binding \u5173\u8054\u5916\u90e8\u6570\u636e<\/h2>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u5728\u89c6\u56fe\u5185\u58f0\u660e&#xff0c;\u7531\u5916\u90e8\u4f20\u5165&#xff0c;\u5fc5\u987b\u662f\u53d8\u91cf&#xff0c;\u5fc5\u987b\u662f\u53cc\u5411\u7ed1\u5b9a&#xff08;\u5fc5\u987b\u52a0$&#xff09;\u3002\u5927\u81f4\u4ee3\u7801\u5982\u4e0b&#xff1a;<\/p>\n<p>struct SwiftUIViewEnv: View {<br \/>\n    &#064;Binding var info : String<br \/>\n    var body: some View {<br \/>\n        Text(info)<br \/>\n    }<br \/>\n}<\/p>\n<p>\/\/\u8c03\u7528\u8005<br \/>\n&#064;State var bindingstr &#061; &#034;bindingstr&#034;<\/p>\n<p>    SwiftUIViewEnv(info:$bindingstr)<\/p>\n<p>\/\/\u9884\u89c8<br \/>\n#Preview {<br \/>\n    var info &#061; &#034;abc&#034;<br \/>\n    SwiftUIViewEnv(info: Binding.constant(info))<br \/>\n}<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u6ce8\u610f\u9884\u89c8\u90a3\u91cc\u4ee3\u7801\u602a\u602a\u7684\u3002\u6bd4MAUI\u5f3a&#xff0c;\u54b1\u5c31\u4e0d\u8bf4\u5565\u4e86\u3002<\/p>\n<h2 id=\"%40EnvironmentObject%20%E5%85%A8%E5%B1%80%E5%8F%98%E9%87%8F\">&#064;EnvironmentObject \u5168\u5c40\u53d8\u91cf<\/h2>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u73af\u5883\u5bf9\u8c61\u5c31\u662f\u5168\u5c40\u53d8\u91cf\u3002\u5168\u5c40\u53d8\u91cf\u5fc5\u987b\u662fObservableObject&#xff0c;\u6bcf\u4e2a\u9700\u8981\u52a8\u6001\u901a\u77e5\u7684\u5bf9\u8c61\u9700\u8981\u7528&#064;Published\u5305\u88c5&#xff0c;\u5927\u81f4\u5982\u6b64&#xff1a;<\/p>\n<p>class EnvModel: ObservableObject{<br \/>\n    &#064;Published var info &#061; &#034;env&#034;<br \/>\n} <\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u6bcf\u4e2a\u4f7f\u7528\u8005\u90fd\u9700\u8981\u58f0\u660e\u73af\u5883\u53d8\u91cf&#xff1a;<\/p>\n<p>&#064;EnvironmentObject var env: EnvModel <\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u58f0\u660e\u4e4b\u540e\u53ef\u4ee5\u548c\u666e\u901a\u5bf9\u8c61\u4e00\u6837\u8bbf\u95ee&#xff1a;<\/p>\n<p>            Text(env.info)<br \/>\n                .onTapGesture {<br \/>\n                    env.info &#043;&#061; &#034;1&#034;<br \/>\n                } <\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u9884\u89c8\u4e5f\u9700\u8981\u63d0\u524d\u51c6\u5907\u4e00\u4e0b&#xff1a;<\/p>\n<p>#Preview {<br \/>\n    SwiftUIViewEnv().environmentObject(EnvModel())<br \/>\n}<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u5728\u4e24\u4e2a\u4e0d\u540c\u7684\u89c6\u56fe\u8bbf\u95ee&#xff08;\u6572\u4e09\u4e0b\u4ece\u201cenv\u201d\u53d8\u6210\u201cenv111\u201d&#xff09;&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"98\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260207054922-6986d26295bfc.png\" width=\"184\" \/>\u5bfc\u822a\u5230\u53e6\u5916\u4e00\u4e2a\u89c6\u56fe&#xff1a;<img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"132\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260207054922-6986d2629e384.png\" width=\"258\" \/><\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u8bf4\u660e\u786e\u5b9e\u662f\u540c\u4e00\u4e2a\u6570\u636e\u3002<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u5b9e\u4f53\u673a\u8fd0\u884c\u9700\u8981\u5728app\u5165\u53e3\u5904\u51c6\u5907\u4e00\u4e0b&#xff0c;\u4e0d\u7136\u8d77\u6765\u5c31\u6302\u4e86&#xff1a;<\/p>\n<p>\/\/AaaApp.swift<\/p>\n<p>import SwiftUI<\/p>\n<p>&#064;main<br \/>\nstruct AaaApp: App {<br \/>\n    var body: some Scene {<br \/>\n        WindowGroup {<br \/>\n            MainView().environmentObject(EnvModel())<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<h2 id=\"%40AppStorage%20%E8%87%AA%E5%8A%A8%E6%8C%81%E4%B9%85%E5%8C%96\">&#064;AppStorage \u81ea\u52a8\u6301\u4e45\u5316<\/h2>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&#064;AppStorage \u8868\u660e\u8fd9\u4e2a\u53d8\u91cf\u4e0d\u4ec5\u662f&#064;Published&#xff0c;\u800c\u4e14\u81ea\u52a8\u5b58\u50a8&#xff1a;<\/p>\n<p>class EnvModel: ObservableObject{<br \/>\n    &#064;Published var info &#061; &#034;env&#034;<br \/>\n    &#064;AppStorage(&#034;setting&#034;) var setting &#061; &#034;setting&#034;<br \/>\n} <\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u4e5f\u5c31\u662f\u4e2a\u65b9\u4fbf\u7684\u5b58\u50a8\u7b80\u5355\u914d\u7f6e\u7684\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%40EnvironmentObject%20%E7%A9%B6%E7%AB%9F%E6%98%AF%E4%BB%80%E4%B9%88\">&#064;EnvironmentObject \u7a76\u7adf\u662f\u4ec0\u4e48<\/h2>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u901a\u8fc7&#064;EnvironmentObject\u5bf9\u540c\u4e00\u79cd\u6a21\u578b\u6784\u9020\u4e24\u4e2a\u4e0d\u540c\u540d\u5b57\u7684\u5bf9\u8c61\u5b9e\u4f8b\u884c\u4e0d\u884c&#xff1f;\u4e0d\u884c&#xff01;\u8003\u8651\u4e00\u4e0b\u4e4b\u524d\u9884\u89c8\u548c\u5e94\u7528\u5165\u53e3\u7684\u5904\u7406&#xff0c;\u548c\u53d8\u91cf\u540d\u65e0\u5173&#xff0c;\u56e0\u6b64\u53d8\u91cf\u540d\u4ec5\u4ec5\u662f\u65b9\u4fbf\u5199\u4ee3\u7801\u7684&#xff0c;\u4e0d\u540c\u89c6\u56fe\u53ef\u4ee5\u91c7\u7528\u4e0d\u540c\u7684\u540d\u5b57\u3002<\/p>\n<h2 id=\"%E5%AE%8C%E6%95%B4%E7%A4%BA%E4%BE%8B\">\u5b8c\u6574\u793a\u4f8b<\/h2>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u8fd9\u4e2a\u793a\u4f8b\u5305\u542b\u4e86\u672c\u7bc7\u7684\u6240\u6709\u77e5\u8bc6&#xff0c;\u5e76\u6f14\u793a\u4e86\u4e0d\u540c\u540d\u5b57\u7684\u5168\u5c40\u53d8\u91cf\u5176\u5b9e\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61&#xff1a;<\/p>\n<p>import SwiftUI<\/p>\n<p>class EnvModel: ObservableObject{<br \/>\n    &#064;Published var info &#061; &#034;env&#034;<br \/>\n    &#064;AppStorage(&#034;setting&#034;) var setting &#061; &#034;setting&#034;<br \/>\n}<br \/>\nstruct SwiftUIViewEnv: View {<br \/>\n    &#064;Binding var info : String<br \/>\n    &#064;EnvironmentObject var env: EnvModel<br \/>\n    &#064;EnvironmentObject var env2: EnvModel<br \/>\n    var body: some View {<br \/>\n        VStack{<br \/>\n            Text(info)<br \/>\n            Text(env.info)<br \/>\n                .onTapGesture {<br \/>\n                    env.info &#043;&#061; &#034;1&#034;<br \/>\n                }<br \/>\n            Text(env.setting)<br \/>\n                .onTapGesture {<br \/>\n                    env.setting &#043;&#061; &#034;1&#034;<br \/>\n                }<br \/>\n            Text(env2.info)<br \/>\n                .onTapGesture {<br \/>\n                    env2.info &#043;&#061; &#034;a&#034;<br \/>\n                }<br \/>\n            Text(env2.setting)<br \/>\n                .onTapGesture {<br \/>\n                    env2.setting &#043;&#061; &#034;a&#034;<br \/>\n                }<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<p>#Preview {<br \/>\n    var info &#061; &#034;abc&#034;<br \/>\n    SwiftUIViewEnv(info: Binding.constant(info)).environmentObject(EnvModel())<br \/>\n}<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u521d\u59cb\u65f6\u4e24\u4e2a\u5b57\u7b26\u4e32\u201cenv\u201d\u56de\u5230\u539f\u59cb\u72b6\u6001&#xff0c;\u4e24\u4e2a\u201csetting\u201d\u4fdd\u6301\u4e0a\u6b21\u7684\u72b6\u6001&#xff08;\u56e0\u4e3a\u81ea\u52a8\u6301\u4e45\u5316&#xff09;&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"290\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260207054922-6986d262aa1ab.png\" width=\"276\" \/><\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u518d\u70b9\u4e00\u70b9\u589e\u52a0\u4fe1\u606f&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"240\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260207054922-6986d262b805b.png\" width=\"438\" \/><\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u4e24\u7ec4\u4fe1\u606f\u59cb\u7ec8\u662f\u76f8\u540c\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u662f\u5c5e\u6027\u5305\u88c5\u5668&#xff0c;\u901a\u8fc7\u4e00\u4e2a\u6307\u793a\u5668\u6765\u5b9e\u73b0\u590d\u6742\u7684\u540e\u53f0\u4ee3\u7801&#xff0c;\u8fd9\u662f\u975e\u5e38\u5148\u8fdb\u7684\u3002 \u6211\u4eec\u5df2\u7ecf\u719f\u6089State&#xff0c;\u7528\u6765\u628a\u754c\u9762\u5143\u7d20\u548c\u6570\u636e\u5173\u8054\u8d77\u6765&#xff0c;\u7531\u6846\u67b6\u81ea\u52a8\u5b9e\u73b0\u754c\u9762\u548c\u6570\u636e\u7684\u8054\u52a8\u3002\u5728\u5176\u4ed6\u8bed\u8a00\u4e2d\u7c7b\u4f3c\u529f\u80fd\u53ef\u80fd\u88ab\u79f0\u4e3a\u201c\u7ed1\u5b9a\u201d&#xff0c;\u800c\u5728SwiftUI\u91ccBinding\u5219\u8868\u793a\u5173\u8054\u7684\u5916\u90e8\u6570\u636e\u3002 \u7b26\u53f7$\u7528\u6765\u751f\u6210\u53d8\u91cf\u7684\u7ed1\u5b9a&#xff0c;\u5b9e\u73b0\u53cc\u5411\u6570\u636e\u4ea4\u4e92\u3002<br \/>\n\u76ee\u5f55<br \/>\nState \u5185\u90e8\u6570\u636e\u7ed1\u5b9a<br \/>\nBinding \u5173\u8054\u5916\u90e8\u6570\u636e<br \/>\nEnvironmentObj<\/p>\n","protected":false},"author":2,"featured_media":73308,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[6264,1680,5814],"topic":[],"class_list":["post-73313","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-swift","tag-ios","tag-swiftui"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>iOS\u5f00\u53d1 SwiftUI 16\uff1a\u9875\u9762\u6570\u636e\u4ea4\u4e92 \u81ea\u52a8\u6301\u4e45\u5316 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" 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