{"id":6774,"date":"2025-05-29T13:00:08","date_gmt":"2025-06-05T05:25:07","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=6774"},"modified":"2025-06-05T13:00:08","modified_gmt":"2025-06-05T05:25:07","slug":"https-badgameshow-com-steven-63","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/https-badgameshow-com-steven-63\/","title":{"rendered":"Swift \u5716\u5f62\u7e6a\u88fd\u6559\u5b78\uff1a\u4f7f\u7528 Core Graphics \u6253\u9020\u7f8e\u9e97\u7684 2D \u5716\u5f62"},"content":{"rendered":"<p>&#8220;`html<br \/>\n<meta name=\"keywords\" content=\"swift, Core Graphics, \u7e6a\u5716, iOS, macOS, 2025 \u6700\u65b0\u8a9e\u6cd5\"><\/p>\n<h1>Swift \u5716\u5f62\u7e6a\u88fd\u6559\u5b78\uff1a\u4f7f\u7528 Core Graphics \u6253\u9020\u7f8e\u9e97\u7684 2D \u5716\u5f62<\/h1>\n<p>Swift \u662f\u4e00\u7a2e\u7528\u65bc\u958b\u767c iOS\u3001macOS\u3001watchOS \u548c tvOS 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Graphics<\/h2>\n<p>\u8981\u958b\u59cb\u4f7f\u7528 Core Graphics\uff0c\u9996\u5148\u9700\u8981\u5728\u4f60\u7684 Swift \u6a94\u6848\u4e2d\u5c0e\u5165\u76f8\u95dc\u7684\u6846\u67b6\uff1a<\/p>\n<pre><code class=\"language-swift line-numbers\">import CoreGraphics\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u4f7f\u7528 Core Graphics \u63d0\u4f9b\u7684\u51fd\u6578\u4f86\u7e6a\u88fd\u5716\u5f62\u3002\u4ee5\u4e0b\u662f\u4e00\u6bb5\u793a\u7bc4\u7a0b\u5f0f\u78bc\uff0c\u9019\u6bb5\u7a0b\u5f0f\u78bc\u5c07\u5728\u756b\u5e03\u4e0a\u7e6a\u88fd\u4e00\u689d\u5f9e (0, 0) \u5230 (100, 100) \u7684\u7d05\u8272\u7dda\u689d\uff1a<\/p>\n<pre><code class=\"language-swift line-numbers\">if let context = UIGraphicsGetCurrentContext() {\n    CGContextSetLineWidth(context, 2.0)\n    CGContextSetStrokeColorWithColor(context, UIColor.red.cgColor)\n    CGContextMoveToPoint(context, 0, 0)\n    CGContextAddLineToPoint(context, 100, 100)\n    CGContextStrokePath(context)\n}\n<\/code><\/pre>\n<p>\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4f7f\u7528\u4e86 Core Graphics \u7684\u57fa\u672c\u7e6a\u5716\u51fd\u6578\uff0c\u78ba\u4fdd\u4f60\u5728\u5408\u9069\u7684\u4e0a\u4e0b\u6587\u4e2d\u904b\u884c\u5b83\uff0c\u4ee5\u4fbf\u6b63\u78ba\u6e32\u67d3\u5716\u5f62\u3002<\/p>\n<h2>\u932f\u8aa4\u6392\u9664<\/h2>\n<p>\u5728\u4f7f\u7528 Core Graphics \u7684\u904e\u7a0b\u4e2d\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\uff1a<\/p>\n<ul>\n<li><strong>Context \u70ba nil\uff1a<\/strong>\u78ba\u4fdd\u4f60\u7684\u7e6a\u5716\u4ee3\u78bc\u5728\u5408\u9069\u7684 UIView \u6216 CGContext \u74b0\u5883\u4e2d\u904b\u884c\u3002<\/li>\n<li><strong>\u984f\u8272\u672a\u986f\u793a\uff1a<\/strong>\u6aa2\u67e5\u984f\u8272\u8a2d\u7f6e\u662f\u5426\u6b63\u78ba\uff0c\u4e26\u78ba\u4fdd\u5728\u7e6a\u88fd\u4e4b\u524d\u5df2\u7d93\u8a2d\u7f6e\u4e86\u984f\u8272\u3002<\/li>\n<\/ul>\n<h2>\u5ef6\u4f38\u61c9\u7528<\/h2>\n<p>Core Graphics 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\u6709\u4ec0\u9ebc\u6700\u4f73\u5be6\u8e10\uff1f<\/h3>\n<p>A2: \u78ba\u4fdd\u5728\u6b63\u78ba\u7684\u4e0a\u4e0b\u6587\u4e2d\u9032\u884c\u7e6a\u5716\uff0c\u5408\u7406\u8a2d\u7f6e\u984f\u8272\u548c\u7dda\u5bec\uff0c\u4e26\u9032\u884c\u9069\u7576\u7684\u932f\u8aa4\u8655\u7406\u3002<\/p>\n<h3>Q3: Core Graphics \u548c\u5176\u4ed6\u7e6a\u5716\u6846\u67b6\u6709\u4ec0\u9ebc\u5340\u5225\uff1f<\/h3>\n<p>A3: Core Graphics \u662f\u4e00\u500b\u5e95\u5c64\u7684 C \u8a9e\u8a00\u6846\u67b6\uff0c\u5c08\u6ce8\u65bc 2D \u7e6a\u5716\uff0c\u800c UIKit \u7b49\u6846\u67b6\u5247\u63d0\u4f9b\u4e86\u66f4\u9ad8\u5c64\u6b21\u7684 UI \u5143\u4ef6\u548c\u7e6a\u5716\u529f\u80fd\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2023\/02\/Swift-\u5716\u5f62\u7e6a\u88fd\uff1aCore-Graphics-\ud83c\udfa8_1675395499.487029.webp\" alt=\"Swift \u5716\u5f62\u7e6a\u88fd\uff1aCore Graphics \ud83c\udfa8\" title=\"Swift \u7e6a\u5716\u3001Core Graphics\u3001iOS \u7e6a\u5716\u3001macOS \u7e6a\u5716\" width=\"1200\" height=\"628\"\/><br \/>\n&#8220;`<br \/>\n&#8212;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981\uff1aCoreGraphics\u662fApple\u5728iOS\u548cmacOS\u4e2d\u63d0\u4f9b\u7684\u4e00\u7a2e\u7e6a\u5716\u6280\u8853\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728Swift\u4e2d\u5275\u5efa\u51fa\u7cbe\u7f8e\u7684\u5716\u5f62\u548c\u5716\u50cf\u3002\u672c\u6587\u5c07\u4ecb\u7d39CoreGraphics\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528Swift\u4f86\u5275\u5efa\u51fa\u7cbe\u7f8e\u7684\u5716\u5f62\u548c\u5716\u50cf\u3002<\/p>\n","protected":false},"author":1,"featured_media":6773,"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-6774","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-\u5716\u5f62\u7e6a\u88fd\uff1aCore-Graphics-\ud83c\udfa8_1675395499.487029.webp","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1Lg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6774","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=6774"}],"version-history":[{"count":0,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6774\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/6773"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=6774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=6774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=6774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}