{"id":4215,"date":"2025-05-30T11:50:46","date_gmt":"2025-06-05T04:23:45","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4215"},"modified":"2025-06-05T11:50:46","modified_gmt":"2025-06-05T04:23:45","slug":"%e5%ad%b8%e7%bf%92swift%e4%b8%ad%e7%9a%84initializer%e4%b8%8d%e8%83%bd%e8%a6%86%e8%93%8b%e7%88%b6%e9%a1%9e%e5%88%a5%e7%9a%84%e6%8c%87%e5%ae%9a%e5%88%9d%e5%a7%8b%e5%8c%96%e5%99%a8-2","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/%e5%ad%b8%e7%bf%92swift%e4%b8%ad%e7%9a%84initializer%e4%b8%8d%e8%83%bd%e8%a6%86%e8%93%8b%e7%88%b6%e9%a1%9e%e5%88%a5%e7%9a%84%e6%8c%87%e5%ae%9a%e5%88%9d%e5%a7%8b%e5%8c%96%e5%99%a8-2\/","title":{"rendered":"\u6df1\u5165\u4e86\u89e3 Swift \u4e2d\u7684 Initializer\uff1a\u5982\u4f55\u89e3\u6c7a\u4e0d\u8986\u84cb\u7236\u985e\u5225\u6307\u5b9a\u521d\u59cb\u5316\u5668\u7684\u932f\u8aa4"},"content":{"rendered":"

<\/p>\n

\u6df1\u5165\u4e86\u89e3 Swift \u4e2d\u7684 Initializer\uff1a\u5982\u4f55\u89e3\u6c7a\u4e0d\u8986\u84cb\u7236\u985e\u5225\u6307\u5b9a\u521d\u59cb\u5316\u5668\u7684\u932f\u8aa4<\/h1>\n

Swift \u662f\u4e00\u7a2e\u5f37\u5927\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u9069\u7528\u65bc\u958b\u767c iOS \u548c macOS \u61c9\u7528\u7a0b\u5f0f\u3002\u958b\u767c\u8005\u5728\u4f7f\u7528 Swift \u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4e00\u7a2e\u932f\u8aa4\uff1a**\u201cInitializer \u4e0d\u6703\u8986\u84cb\u5176\u8d85\u985e\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5b50\u201d**\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u63d0\u4f9b2025\u5e74\u6700\u65b0\u7684\u8a9e\u6cd5\u8207\u6700\u4f73\u5be6\u8e10\uff0c\u5e6b\u52a9\u60a8\u6df1\u5165\u7406\u89e3\u9019\u500b\u932f\u8aa4\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

\u4ec0\u9ebc\u662f Initializer\uff1f<\/h2>\n

Initializer\uff08\u521d\u59cb\u5316\u5668\uff09\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u51fd\u6578\uff0c\u8ca0\u8cac\u521d\u59cb\u5316\u7269\u4ef6\u7684\u5c6c\u6027\u3002\u7576\u7269\u4ef6\u88ab\u5275\u5efa\u6642\uff0c\u521d\u59cb\u5316\u5668\u6703\u88ab\u81ea\u52d5\u8abf\u7528\uff0c\u4e26\u53ef\u4ee5\u63a5\u53d7\u53c3\u6578\u4ee5\u8a2d\u7f6e\u7269\u4ef6\u7684\u521d\u59cb\u72c0\u614b\u3002\u5728 Swift \u4e2d\uff0c\u6240\u6709\u985e\u5225\u90fd\u5fc5\u9808\u6709\u521d\u59cb\u5316\u5668\uff0c\u4ee5\u78ba\u4fdd\u7269\u4ef6\u5728\u4f7f\u7528\u4e4b\u524d\u5df2\u5b8c\u5168\u914d\u7f6e\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u6307\u5b9a\u521d\u59cb\u5316\u5b50\uff1f<\/h2>\n

\u6307\u5b9a\u521d\u59cb\u5316\u5b50\u662f\u4e00\u7a2e\u7279\u5b9a\u985e\u578b\u7684\u521d\u59cb\u5316\u5668\uff0c\u7528\u4f86\u521d\u59cb\u5316\u7269\u4ef6\u7684\u5c6c\u6027\u3002\u5b83\u80fd\u5920\u63a5\u53d7\u53c3\u6578\u4e26\u8a2d\u7f6e\u7269\u4ef6\u7684\u521d\u59cb\u72c0\u614b\u3002\u5728\u5b50\u985e\u5225\u4e2d\uff0c\u6307\u5b9a\u521d\u59cb\u5316\u5b50\u4e5f\u53ef\u4ee5\u7528\u4f86\u8a2d\u7f6e\u5b50\u985e\u5225\u7269\u4ef6\u7684\u7279\u5b9a\u5c6c\u6027\u3002<\/p>\n

\u4e86\u89e3\u201cInitializer \u4e0d\u6703\u8986\u84cb\u5176\u8d85\u985e\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5b50\u201d\u932f\u8aa4<\/h2>\n

\u7576\u5b50\u985e\u5225\u7684\u521d\u59cb\u5316\u5668\u8207\u5176\u8d85\u985e\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5b50\u5b58\u5728\u53c3\u6578\u4e0d\u5339\u914d\u7684\u60c5\u6cc1\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u201cInitializer \u4e0d\u6703\u8986\u84cb\u5176\u8d85\u985e\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5b50\u201d\u932f\u8aa4\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u5b50\u985e\u5225\u7684\u521d\u59cb\u5316\u5668\u5b9a\u7fa9\u4e86\u4e0d\u540c\u6578\u91cf\u6216\u985e\u578b\u7684\u53c3\u6578\u6642\u3002<\/p>\n

\u5982\u4f55\u89e3\u6c7a\u201cInitializer \u4e0d\u6703\u8986\u84cb\u5176\u8d85\u985e\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5b50\u201d\u932f\u8aa4\uff1f<\/h2>\n

\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u89e3\u6c7a\u6b64\u932f\u8aa4\u7684\u6700\u4f73\u65b9\u6cd5\uff1a<\/p>\n

1. \u78ba\u4fdd\u53c3\u6578\u5217\u8868\u5339\u914d<\/h3>\n

\u5c07\u5b50\u985e\u5225\u7684\u521d\u59cb\u5316\u5668\u66f4\u6539\u70ba\u8207\u8d85\u985e\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5b50\u5177\u6709\u76f8\u540c\u7684\u53c3\u6578\u5217\u8868\u3002\u4f8b\u5982\uff1a<\/p>\n

\nclass Superclass {\n    init(param1: Int, param2: String, param3: Bool) {\n        \/\/ Initialization code\n    }\n}\n\nclass Subclass: Superclass {\n    override init(param1: Int, param2: String, param3: Bool) {\n        super.init(param1: param1, param2: param2, param3: param3)\n        \/\/ Initialization code\n    }\n}\n<\/pre>\n
2. \u4f7f\u7528 `required` \u4fee\u98fe\u7b26<\/h3>\n
\u4f7f\u7528 `required` \u4fee\u98fe\u7b26\u53ef\u4ee5\u78ba\u4fdd\u6240\u6709\u5b50\u985e\u5225\u90fd\u5be6\u73fe\u4e86\u76f8\u540c\u53c3\u6578\u5217\u8868\u7684\u521d\u59cb\u5316\u5668\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u672a\u4f86\u7684\u932f\u8aa4\uff1a<\/p>\n
\nclass Superclass {\n    required init(param1: Int, param2: String, param3: Bool) {\n        \/\/ Initialization code\n    }\n}\n\nclass Subclass: Superclass {\n    required init(param1: Int, param2: String, param3: Bool) {\n        super.init(param1: param1, param2: param2, param3: param3)\n        \/\/ Initialization code\n    }\n}\n<\/pre>\n
3. \u4f7f\u7528 `super.init` \u4f86\u8abf\u7528\u8d85\u985e\u7684\u521d\u59cb\u5316\u5668<\/h3>\n
\u5982\u679c\u5b50\u985e\u5225\u9700\u8981\u984d\u5916\u7684\u53c3\u6578\uff0c\u5247\u53ef\u4ee5\u5728\u5b50\u985e\u5225\u7684\u521d\u59cb\u5316\u5668\u4e2d\u4f7f\u7528 `super.init` \u4f86\u8abf\u7528\u8d85\u985e\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5b50\uff0c\u4e26\u50b3\u905e\u76f8\u61c9\u7684\u53c3\u6578\uff1a<\/p>\n
\nclass Superclass {\n    init(param1: Int, param2: String, param3: Bool) {\n        \/\/ Initialization code\n    }\n}\n\nclass Subclass: Superclass {\n    init(param1: Int, param2: String, param3: Bool, param4: Double) {\n        super.init(param1: param1, param2: param2, param3: param3)\n        \/\/ Additional initialization code for param4\n    }\n}\n<\/pre>\n
\u5ef6\u4f38\u61c9\u7528<\/h2>\n
\u5728\u5be6\u969b\u958b\u767c\u4e2d\uff0c\u7406\u89e3\u548c\u6b63\u78ba\u4f7f\u7528\u521d\u59cb\u5316\u5668\u5c0d\u65bc\u985e\u5225\u7684\u8a2d\u8a08\u548c\u7269\u4ef6\u7684\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u7576\u60a8\u8a2d\u8a08\u985e\u5225\u6642\uff0c\u8003\u616e\u4f7f\u7528 `required` \u4fee\u98fe\u7b26\u53ef\u4ee5\u5e6b\u52a9\u60a8\u672a\u4f86\u7684\u64f4\u5c55\uff0c\u78ba\u4fdd\u5b50\u985e\u5225\u7684\u521d\u59cb\u5316\u5668\u9075\u5faa\u8d85\u985e\u7684\u898f\u7bc4\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u672c\u6587\u6df1\u5165\u63a2\u8a0e\u4e86 Swift \u4e2d\u201cInitializer \u4e0d\u6703\u8986\u84cb\u5176\u8d85\u985e\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5b50\u201d\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u89e3\u6c7a\u65b9\u6848\u3002\u60a8\u53ef\u4ee5\u901a\u904e\u78ba\u4fdd\u53c3\u6578\u5217\u8868\u5339\u914d\u3001\u4f7f\u7528 `required` \u4fee\u98fe\u7b26\u3001\u6216\u9069\u7576\u8abf\u7528 `super.init` \u4f86\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u9019\u6a23\u4e0d\u50c5\u80fd\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u6e1b\u5c11\u932f\u8aa4\u7684\u767c\u751f\u3002<\/p>\n
Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n
Q1: \u70ba\u4ec0\u9ebc\u8981\u4f7f\u7528 `required` \u4fee\u98fe\u7b26\uff1f<\/h3>\n
A1: `required` \u4fee\u98fe\u7b26\u78ba\u4fdd\u6240\u6709\u5b50\u985e\u5225\u90fd\u5fc5\u9808\u5be6\u73fe\u76f8\u540c\u53c3\u6578\u7684\u521d\u59cb\u5316\u5668\uff0c\u6709\u52a9\u65bc\u7dad\u6301\u985e\u5225\u7684\u8a2d\u8a08\u4e00\u81f4\u6027\u3002<\/p>\n
Q2: \u5982\u679c\u6211\u4e0d\u60f3\u5728\u5b50\u985e\u5225\u4e2d\u8986\u84cb\u521d\u59cb\u5316\u5668\u600e\u9ebc\u8fa6\uff1f<\/h3>\n
A2: \u5982\u679c\u4e0d\u9700\u8986\u84cb\uff0c\u53ef\u4ee5\u5728\u5b50\u985e\u5225\u4e2d\u53ea\u5be6\u73fe\u9700\u8981\u7684\u521d\u59cb\u5316\u5668\uff0c\u4e26\u7701\u7565\u8207\u8d85\u985e\u5225\u76f8\u540c\u7684\u521d\u59cb\u5316\u5668\u3002<\/p>\n
Q3: \u5982\u4f55\u6aa2\u67e5\u6211\u7684\u521d\u59cb\u5316\u5668\u662f\u5426\u6b63\u78ba\uff1f<\/h3>\n
A3: \u901a\u904e\u7de8\u8b6f\u5668\u7684\u932f\u8aa4\u63d0\u793a\u548c\u55ae\u5143\u6e2c\u8a66\uff0c\u60a8\u53ef\u4ee5\u6aa2\u67e5\u521d\u59cb\u5316\u5668\u7684\u6b63\u78ba\u6027\uff0c\u4e26\u78ba\u4fdd\u5176\u6309\u9810\u671f\u5de5\u4f5c\u3002<\/p>\n
—<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6458\u8981\uff1a\u5728Swift\u4e2d\uff0c\u5b50\u985e\u5225\u7684\u521d\u59cb\u5316\u5668\u4e0d\u80fd\u8986\u84cb\u7236\u985e\u5225\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5668\uff0c\u5fc5\u9808\u4f7f\u7528\u7236\u985e\u5225\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5668\u4f86\u521d\u59cb\u5316\u5b50\u985e\u5225\u7684\u5be6\u4f8b\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39Swift\u4e2dInitializer\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u907f\u514dInitializer\u4e0d\u80fd\u8986\u84cb\u7236\u985e\u5225\u7684\u6307\u5b9a\u521d\u59cb\u5316\u5668\u7684\u932f\u8aa4\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-4215","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\/pcFK27-15Z","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4215","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=4215"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4215\/revisions"}],"predecessor-version":[{"id":4216,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4215\/revisions\/4216"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=4215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=4215"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=4215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}