{"id":6826,"date":"2025-06-04T13:10:35","date_gmt":"2025-06-05T05:52:34","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=6826"},"modified":"2025-06-05T13:10:35","modified_gmt":"2025-06-05T05:52:34","slug":"https-badgameshow-com-steven-89","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/https-badgameshow-com-steven-89\/","title":{"rendered":"Swift \u7269\u4ef6\u5b58\u5132\u5b8c\u5168\u6307\u5357\uff1a\u4f7f\u7528 NSUserDefaults \u5132\u5b58\u8207\u8b80\u53d6\u8cc7\u6599 \ud83d\udcbe"},"content":{"rendered":"

<\/p>\n

Swift \u7269\u4ef6\u5b58\u5132\u5b8c\u5168\u6307\u5357\uff1a\u4f7f\u7528 NSUserDefaults \u5132\u5b58\u8207\u8b80\u53d6\u8cc7\u6599 \ud83d\udcbe<\/h1>\n

Swift \u662f\u4e00\u7a2e\u73fe\u4ee3\u5316\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u4fbf\u5229\u7684\u529f\u80fd\u3002\u5728 iOS \u958b\u767c\u4e2d\uff0cNSUserDefaults \u662f\u5132\u5b58\u5c0f\u578b\u8cc7\u6599\u7684\u6709\u6548\u5de5\u5177\uff0c\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u8f15\u9b06\u4fdd\u5b58\u7528\u6236\u8a2d\u5b9a\u6216\u61c9\u7528\u72c0\u614b\uff0c\u4e26\u5728 App \u91cd\u65b0\u555f\u52d5\u5f8c\u53d6\u56de\u9019\u4e9b\u8cc7\u6599\u3002<\/p>\n

NSUserDefaults \u80fd\u5920\u5132\u5b58\u7684\u8cc7\u6599\u985e\u578b\u5305\u62ec\uff1a\u6578\u5b57\u3001\u5b57\u4e32\u3001\u9663\u5217\u3001\u5b57\u5178\u3001\u65e5\u671f\u53ca\u8cc7\u6599<\/strong>\u7b49\uff0c\u9019\u4f7f\u5f97\u5b83\u975e\u5e38\u9069\u5408\u7528\u65bc\u5132\u5b58\u7528\u6236\u504f\u597d\u8a2d\u5b9a\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528 NSUserDefaults<\/h2>\n

\u4f7f\u7528 NSUserDefaults \u5132\u5b58\u8207\u8b80\u53d6\u8cc7\u6599\u975e\u5e38\u7c21\u55ae\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u64cd\u4f5c\u7684\u4ecb\u7d39\u3002<\/p>\n

\u5132\u5b58\u8cc7\u6599<\/h3>\n

\u8981\u5132\u5b58\u8cc7\u6599\uff0c\u53ef\u4ee5\u4f7f\u7528 set(_:forKey:)<\/code> \u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff1a<\/p>\n

let userDefaults = UserDefaults.standard\nuserDefaults.set(\"John\", forKey: \"name\")\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u5c07\u5b57\u4e32 “John” \u5132\u5b58\u5230 NSUserDefaults\uff0c\u4e26\u4f7f\u7528 “name” \u4f5c\u70ba\u9375\u503c\u3002<\/p>\n
\u8b80\u53d6\u8cc7\u6599<\/h3>\n
\u8981\u53d6\u56de\u8cc7\u6599\uff0c\u53ef\u4ee5\u4f7f\u7528 string(forKey:)<\/code> \u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u53d6\u51fa\u8cc7\u6599\u7684\u7bc4\u4f8b\uff1a<\/p>\n
let userDefaults = UserDefaults.standard\nif let name = userDefaults.string(forKey: \"name\") {\n    print(\"\u5132\u5b58\u7684\u540d\u5b57\u662f \\(name)\")\n} else {\n    print(\"\u6c92\u6709\u627e\u5230\u540d\u5b57\")\n}\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u4f7f\u7528 string(forKey:)<\/code> \u65b9\u6cd5\u4f86\u8b80\u53d6\u5132\u5b58\u7684\u5b57\u4e32\uff0c\u5982\u679c\u627e\u4e0d\u5230\u5c0d\u61c9\u7684\u9375\u503c\uff0c\u5247\u63d0\u4f9b\u9810\u8a2d\u63d0\u793a\u3002<\/p>\n
\u932f\u8aa4\u6392\u9664<\/h2>\n
\u5982\u679c\u5728\u4f7f\u7528 NSUserDefaults \u6642\u9047\u5230\u554f\u984c\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n
– **\u8cc7\u6599\u672a\u5132\u5b58**\uff1a\u78ba\u4fdd\u4f7f\u7528\u4e86\u6b63\u78ba\u7684\u9375\u503c\uff0c\u4e26\u78ba\u8a8d\u8cc7\u6599\u5df2\u6b63\u78ba\u5132\u5b58\u3002
\n– **\u8cc7\u6599\u8b80\u53d6\u5931\u6557**\uff1a\u6aa2\u67e5\u9375\u503c\u662f\u5426\u6b63\u78ba\uff0c\u4e26\u78ba\u8a8d\u8a72\u9375\u503c\u662f\u5426\u5b58\u5728\u65bc NSUserDefaults \u4e2d\u3002<\/p>\n
\u5ef6\u4f38\u61c9\u7528<\/h2>\n
NSUserDefaults \u4e3b\u8981\u7528\u65bc\u5132\u5b58\u5c0f\u578b\u8cc7\u6599\u3002\u5982\u679c\u9700\u8981\u5132\u5b58\u5927\u91cf\u6216\u8907\u96dc\u7684\u8cc7\u6599\u7d50\u69cb\uff0c\u5efa\u8b70\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\uff0c\u4f8b\u5982 Core Data \u6216\u6587\u4ef6\u5b58\u5132\u3002<\/p>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u5132\u5b58\u4e00\u500b\u81ea\u5b9a\u7fa9\u7684\u8cc7\u6599\u7d50\u69cb\uff0c\u53ef\u4ee5\u5c07\u5176\u8f49\u63db\u70ba JSON \u683c\u5f0f\uff0c\u7136\u5f8c\u5132\u5b58\u70ba\u5b57\u4e32\uff1a<\/p>\n
struct UserProfile: Codable {\n    var name: String\n    var age: Int\n}\n\n\/\/ \u5132\u5b58\u8cc7\u6599\nlet profile = UserProfile(name: \"John\", age: 30)\nif let encoded = try? JSONEncoder().encode(profile) {\n    userDefaults.set(encoded, forKey: \"userProfile\")\n}\n\n\/\/ \u8b80\u53d6\u8cc7\u6599\nif let data = userDefaults.data(forKey: \"userProfile\"),\n   let decodedProfile = try? JSONDecoder().decode(UserProfile.self, from: data) {\n    print(\"\u7528\u6236\u540d: \\(decodedProfile.name), \u5e74\u9f61: \\(decodedProfile.age)\")\n}\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
NSUserDefaults \u662f\u4e00\u500b\u5f37\u5927\u4e14\u65b9\u4fbf\u7684\u5de5\u5177\uff0c\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u5728 iOS \u61c9\u7528\u4e2d\u5132\u5b58\u57fa\u672c\u8cc7\u6599\u3002\u6b63\u78ba\u4f7f\u7528 NSUserDefaults \u53ef\u4ee5\u63d0\u5347\u7528\u6236\u9ad4\u9a57\uff0c\u8b93\u61c9\u7528\u80fd\u5920\u8a18\u4f4f\u7528\u6236\u7684\u8a2d\u5b9a\u53ca\u504f\u597d\u3002<\/p>\n
\"Swift<\/p>\n
Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n
Q1: NSUserDefaults \u53ef\u4ee5\u5132\u5b58\u54ea\u4e9b\u8cc7\u6599\u985e\u578b\uff1f<\/h3>\n
A: NSUserDefaults \u53ef\u4ee5\u5132\u5b58\u5b57\u4e32\u3001\u6578\u5b57\u3001\u5e03\u6797\u503c\u3001\u65e5\u671f\u3001\u5b57\u5178\u548c\u9663\u5217\u7b49\u57fa\u672c\u8cc7\u6599\u985e\u578b\u3002<\/p>\n
Q2: \u5982\u4f55\u78ba\u4fdd\u8cc7\u6599\u6210\u529f\u5132\u5b58\u5230 NSUserDefaults\uff1f<\/h3>\n
A: \u53ef\u4ee5\u5728\u5132\u5b58\u8cc7\u6599\u5f8c\u7acb\u5373\u8b80\u53d6\u78ba\u8a8d\uff0c\u6216\u4f7f\u7528\u8abf\u8a66\u5de5\u5177\u6aa2\u67e5 NSUserDefaults \u7684\u5167\u5bb9\u3002<\/p>\n
Q3: NSUserDefaults \u7684\u5132\u5b58\u9650\u5236\u662f\u4ec0\u9ebc\uff1f<\/h3>\n
A: NSUserDefaults \u4e3b\u8981\u7528\u65bc\u5132\u5b58\u5c0f\u578b\u8cc7\u6599\uff0c\u5982\u7528\u6236\u8a2d\u5b9a\u3002\u5c0d\u65bc\u5927\u578b\u8cc7\u6599\uff0c\u5efa\u8b70\u4f7f\u7528 Core Data \u6216\u6587\u4ef6\u7cfb\u7d71\u9032\u884c\u7ba1\u7406\u3002
\n—<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6458\u8981\uff1aNSUserDefaults\u662fSwift\u4e2d\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u7269\u4ef6\u5b58\u5132\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u8cc7\u6599\u5132\u5b58\u5728iOS\u88dd\u7f6e\u4e0a\uff0c\u4ee5\u4fbf\u5728App\u958b\u555f\u6642\u53ef\u4ee5\u8f15\u9b06\u53d6\u5f97\u8cc7\u6599\u3002\u672c\u6587\u5c07\u4ecb\u7d39NSUserDefaults\u7684\u57fa\u672c\u7528\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u5132\u5b58\u548c\u53d6\u5f97\u8cc7\u6599\u3002<\/p>\n","protected":false},"author":1,"featured_media":6824,"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-6826","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-\u7269\u4ef6\u5b58\u5132\uff1aNSUserDefaults-\ud83d\udcbe_1675396478.42641.webp","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1M6","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6826","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=6826"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6826\/revisions"}],"predecessor-version":[{"id":13632,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6826\/revisions\/13632"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/6824"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=6826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=6826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=6826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}