{"id":3897,"date":"2025-05-29T11:04:10","date_gmt":"2025-06-05T03:45:10","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3897"},"modified":"2025-06-05T11:04:10","modified_gmt":"2025-06-05T03:45:10","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8swift%e4%b8%ad%e7%9a%84%e5%8f%8d%e5%b0%84%e6%a9%9f%e5%88%b6","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8swift%e4%b8%ad%e7%9a%84%e5%8f%8d%e5%b0%84%e6%a9%9f%e5%88%b6\/","title":{"rendered":"\u5168\u9762\u638c\u63e1 Swift \u53cd\u5c04\u6a5f\u5236\uff1a\u5f9e\u5c6c\u6027\u8a2a\u554f\u5230\u52d5\u614b\u5c0d\u8c61\u5275\u5efa\u7684\u6700\u65b0\u65b9\u6cd5"},"content":{"rendered":"

<\/p>\n

\u5168\u9762\u638c\u63e1 Swift \u53cd\u5c04\u6a5f\u5236\uff1a\u5f9e\u5c6c\u6027\u8a2a\u554f\u5230\u52d5\u614b\u5c0d\u8c61\u5275\u5efa\u7684\u6700\u65b0\u65b9\u6cd5<\/h1>\n

Swift \u662f\u4e00\u7a2e\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5176\u53cd\u5c04\u6a5f\u5236\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u5728\u904b\u884c\u6642\u8a2a\u554f\u5c0d\u8c61\u5c6c\u6027\u548c\u65b9\u6cd5\u7684\u80fd\u529b\uff0c\u4e26\u80fd\u5920\u52d5\u614b\u5275\u5efa\u5c0d\u8c61\u3002\u672c\u6587\u5c07\u4ecb\u7d39 Swift \u4e2d\u53cd\u5c04\u6a5f\u5236\u7684\u6700\u65b0\u7528\u6cd5\uff0c\u4e26\u63d0\u4f9b\u5be6\u4f5c\u7bc4\u4f8b\u3001\u932f\u8aa4\u6392\u9664\u548c\u5ef6\u4f38\u61c9\u7528\u7684\u5efa\u8b70\uff0c\u8b93\u4f60\u80fd\u66f4\u6709\u6548\u5730\u5229\u7528\u9019\u9805\u6280\u8853\u3002<\/p>\n

<\/p>\n

\u4ec0\u9ebc\u662f\u53cd\u5c04\u6a5f\u5236\uff1f<\/h2>\n

\u53cd\u5c04\u6a5f\u5236\u662f\u4e00\u7a2e\u7de8\u7a0b\u6280\u8853\uff0c\u5141\u8a31\u7a0b\u5e8f\u5728\u904b\u884c\u6642\u7372\u53d6\u5176\u81ea\u8eab\u4fe1\u606f\uff0c\u4e26\u6839\u64da\u9019\u4e9b\u4fe1\u606f\u6539\u8b8a\u81ea\u8eab\u884c\u70ba\u3002\u900f\u904e\u53cd\u5c04\u6a5f\u5236\uff0c\u958b\u767c\u8005\u80fd\u5920\u5beb\u51fa\u66f4\u52a0\u9748\u6d3b\u7684\u4ee3\u78bc\uff0c\u6839\u64da\u4e0d\u540c\u7684\u60c5\u6cc1\u52d5\u614b\u8abf\u6574\u884c\u70ba\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528\u53cd\u5c04\u6a5f\u5236\u8a2a\u554f\u5c0d\u8c61\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\uff1f<\/h2>\n

\u5728 Swift \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 `Mirror` \u985e\u4f86\u8a2a\u554f\u5c0d\u8c61\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u5f8c\u7684\u7bc4\u4f8b\uff1a<\/p>\n

“`swift
\nclass Person {
\n var name: String
\n var age: Int<\/p>\n

init(name: String, age: Int) {
\n self.name = name
\n self.age = age
\n }
\n}<\/p>\n

let person = Person(name: “John”, age: 20)
\nlet mirror = Mirror(reflecting: person)<\/p>\n

for child in mirror.children {
\n if let label = child.label {
\n print(“\\(label): \\(child.value)”)
\n }
\n}
\n“`<\/p>\n

\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 `Mirror` \u985e\u4f86\u53cd\u5c04 `Person` \u985e\u7684\u5c6c\u6027\u3002\u5728\u8ff4\u5708\u4e2d\uff0c\u6211\u5011\u6aa2\u67e5 `child.label` \u662f\u5426\u70ba `nil`\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u6f5b\u5728\u7684\u932f\u8aa4\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528\u53cd\u5c04\u6a5f\u5236\u52d5\u614b\u5275\u5efa\u5c0d\u8c61\uff1f<\/h2>\n

Swift \u7684\u53cd\u5c04\u6a5f\u5236\u9084\u53ef\u4ee5\u7528\u65bc\u52d5\u614b\u5275\u5efa\u5c0d\u8c61\u3002\u4f7f\u7528 `NSClassFromString` \u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u6839\u64da\u985e\u540d\u52d5\u614b\u5275\u5efa\u5c0d\u8c61\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u5f8c\u7684\u7bc4\u4f8b\uff1a<\/p>\n

“`swift
\nlet className = “YourModuleName.Person” \/\/ \u78ba\u4fdd\u5305\u542b\u6a21\u7d44\u540d\u7a31
\nif let classType = NSClassFromString(className) as? NSObject.Type {
\n let object = classType.init()
\n print(“\u6210\u529f\u5275\u5efa\u5c0d\u8c61\uff1a\\(object)”)
\n} else {
\n print(“\u7121\u6cd5\u627e\u5230\u985e\u578b\uff1a\\(className)”)
\n}
\n“`<\/p>\n

\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u8acb\u78ba\u4fdd\u66ff\u63db `YourModuleName` \u70ba\u5be6\u969b\u7684\u6a21\u7d44\u540d\u7a31\uff0c\u4ee5\u6b63\u78ba\u627e\u5230\u985e\u578b\u3002\u9019\u80fd\u907f\u514d\u56e0\u6a21\u7d44\u672a\u6b63\u78ba\u6307\u5b9a\u800c\u5c0e\u81f4\u7684\u932f\u8aa4\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664\u8207\u6700\u4f73\u5be6\u8e10<\/h2>\n

1. **\u5c6c\u6027\u70ba nil**\uff1a\u5728\u4f7f\u7528 `Mirror` \u6642\uff0c\u78ba\u4fdd\u6aa2\u67e5 `child.label` \u662f\u5426\u70ba nil\uff0c\u4ee5\u907f\u514d\u904b\u884c\u6642\u932f\u8aa4\u3002
\n2. **\u985e\u540d\u683c\u5f0f**\uff1a\u4f7f\u7528 `NSClassFromString` \u6642\uff0c\u78ba\u4fdd\u985e\u540d\u5305\u542b\u6a21\u7d44\u540d\u7a31\uff0c\u5426\u5247\u6703\u8fd4\u56de nil\u3002
\n3. **\u6027\u80fd\u8003\u91cf**\uff1a\u53cd\u5c04\u64cd\u4f5c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u5efa\u8b70\u5728\u5fc5\u8981\u6642\u4f7f\u7528\uff0c\u4e26\u907f\u514d\u983b\u7e41\u53cd\u5c04\u540c\u4e00\u5c0d\u8c61\u3002<\/p>\n

\u5ef6\u4f38\u61c9\u7528<\/h2>\n

\u53cd\u5c04\u6a5f\u5236\u53ef\u61c9\u7528\u65bc\u8a31\u591a\u5834\u666f\uff0c\u4f8b\u5982 JSON \u89e3\u6790\u3001\u52d5\u614b\u914d\u7f6e\u5c0d\u8c61\u5c6c\u6027\u3001\u5275\u5efa\u901a\u7528\u7684\u6578\u64da\u8655\u7406\u51fd\u6578\u7b49\u3002\u900f\u904e\u53cd\u5c04\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8a2d\u8a08\u51fa\u66f4\u5177\u5f48\u6027\u7684\u4ee3\u78bc\uff0c\u63d0\u5347\u61c9\u7528\u7684\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n

\u7e3d\u7d50<\/h2>\n

\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528 Swift \u4e2d\u7684\u53cd\u5c04\u6a5f\u5236\uff0c\u5305\u62ec\u8a2a\u554f\u5c0d\u8c61\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u3001\u52d5\u614b\u5275\u5efa\u5c0d\u8c61\u7684\u6700\u65b0\u65b9\u6cd5\uff0c\u4ee5\u53ca\u76f8\u95dc\u7684\u932f\u8aa4\u6392\u9664\u548c\u5ef6\u4f38\u61c9\u7528\u3002\u53cd\u5c04\u6a5f\u5236\u8b93\u7a0b\u5e8f\u66f4\u52a0\u9748\u6d3b\uff0c\u9069\u61c9\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/p>\n

Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n

**Q1: \u53cd\u5c04\u6a5f\u5236\u6703\u5f71\u97ff\u6027\u80fd\u55ce\uff1f**
\nA1: \u662f\u7684\uff0c\u53cd\u5c04\u64cd\u4f5c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u5efa\u8b70\u50c5\u5728\u5fc5\u8981\u6642\u4f7f\u7528\u3002<\/p>\n

**Q2: \u5982\u4f55\u8655\u7406\u4f7f\u7528\u53cd\u5c04\u6642\u51fa\u73fe\u7684 nil \u503c\uff1f**
\nA2: \u5728\u8a2a\u554f\u5c6c\u6027\u6642\uff0c\u61c9\u59cb\u7d42\u6aa2\u67e5 `child.label` \u662f\u5426\u70ba nil\uff0c\u4ee5\u907f\u514d\u904b\u884c\u6642\u932f\u8aa4\u3002<\/p>\n

**Q3: \u53ef\u4ee5\u4f7f\u7528\u53cd\u5c04\u6a5f\u5236\u4f86\u89e3\u6790 JSON \u55ce\uff1f**
\nA3: \u662f\u7684\uff0c\u53cd\u5c04\u6a5f\u5236\u53ef\u4ee5\u5e6b\u52a9\u5c07 JSON \u8f49\u63db\u70ba\u76f8\u61c9\u7684 Swift \u5c0d\u8c61\uff0c\u63d0\u5347\u9748\u6d3b\u6027\u3002<\/p>\n

—<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Swift\u4e2d\u7684\u53cd\u5c04\u6a5f\u5236\uff0c\u5305\u62ec\u5982\u4f55\u4f7f\u7528\u53cd\u5c04\u6a5f\u5236\u4f86\u8a2a\u554f\u5c0d\u8c61\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u3001\u5982\u4f55\u4f7f\u7528\u53cd\u5c04\u6a5f\u5236\u4f86\u52d5\u614b\u5275\u5efa\u5c0d\u8c61\u7b49\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","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-3897","post","type-post","status-publish","format-standard","hentry","category-ios","category-swift","tag-ios","tag-swift"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-10R","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3897","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=3897"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3897\/revisions"}],"predecessor-version":[{"id":3922,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3897\/revisions\/3922"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=3897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}