{"id":6920,"date":"2025-05-29T13:30:45","date_gmt":"2025-06-05T06:23:44","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=6920"},"modified":"2025-06-05T13:30:45","modified_gmt":"2025-06-05T06:23:44","slug":"https-badgameshow-com-steven-135","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/https-badgameshow-com-steven-135\/","title":{"rendered":"Swift \u5716\u7247\u7de9\u5b58\uff1a2025 \u6700\u65b0\u7684\u9ad8\u6548\u5feb\u901f\u5b58\u53d6\u5716\u7247\u6280\u8853"},"content":{"rendered":"<p>&#8220;`html<br \/>\n<meta name=\"keywords\" content=\"swift, \u5716\u7247\u7de9\u5b58, \u9ad8\u6548\u5feb\u901f\u5b58\u53d6\u5716\u7247\"><\/p>\n<p>\u96a8\u8457\u667a\u6167\u578b\u624b\u6a5f\u7684\u666e\u53ca\uff0c\u5728 iOS App \u4e2d\u4f7f\u7528\u5716\u7247\u7684\u9700\u6c42\u4e5f\u8d8a\u4f86\u8d8a\u591a\uff0c\u800c\u5982\u4f55\u5feb\u901f\u53c8\u9ad8\u6548\u5730\u5b58\u53d6\u5716\u7247\uff0c\u6210\u70ba\u4e86\u958b\u767c\u8005\u5011\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 Swift \u4f86\u5be6\u73fe\u9ad8\u6548\u7684\u5716\u7247\u5b58\u53d6\uff0c\u4e0d\u50c5\u5305\u62ec\u6700\u65b0\u7684\u6280\u8853\uff0c\u9084\u6db5\u84cb\u4e86\u5be6\u4f5c\u7bc4\u4f8b\u3001\u932f\u8aa4\u6392\u9664\u53ca\u5ef6\u4f38\u61c9\u7528\uff0c\u52a9\u4f60\u5728 2025 \u5e74\u66f4\u5feb\u5730\u5b8c\u6210 App \u7684\u958b\u767c\u3002<\/p>\n<h2>\u5716\u7247\u5b58\u53d6\u65b9\u5f0f<\/h2>\n<p>\u5728 iOS App \u4e2d\uff0c\u5716\u7247\u7684\u5b58\u53d6\u6709\u5169\u7a2e\u65b9\u5f0f\uff1a\u76f4\u63a5\u5f9e\u7db2\u8def\u4e0a\u4e0b\u8f09\u548c\u5f9e\u672c\u5730\u7aef\u5b58\u53d6\u3002\u5c0d\u65bc\u5f9e\u7db2\u8def\u4e0a\u4e0b\u8f09\u7684\u5716\u7247\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <strong>URLSession<\/strong> \u4f86\u5be6\u73fe\uff1b\u800c\u5c0d\u65bc\u5f9e\u672c\u5730\u7aef\u5b58\u53d6\u7684\u5716\u7247\uff0c\u5247\u53ef\u4ee5\u4f7f\u7528 <strong>NSCache<\/strong> \u4f86\u9032\u884c\u5716\u7247\u7de9\u5b58\uff0c\u4ee5\u63d0\u9ad8\u5b58\u53d6\u6548\u7387\u3002<\/p>\n<h2>\u4f7f\u7528 NSCache \u4f86\u505a\u5716\u7247\u7de9\u5b58<\/h2>\n<p>NSCache \u662f\u4e00\u500b\u975e\u5e38\u6709\u6548\u7684\u7de9\u5b58\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4f86\u505a\u5716\u7247\u7de9\u5b58\uff0c\u63d0\u9ad8\u5b58\u53d6\u6548\u7387\u3002\u5728\u4f7f\u7528 NSCache \u4e4b\u524d\uff0c\u9700\u8981\u5148\u5ba3\u544a\u4e00\u500b NSCache \u7684\u7269\u4ef6\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-swift line-numbers\">let imageCache = NSCache<NSString, UIImage>()<\/code><\/pre>\n<p>\u63a5\u8457\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 NSCache \u7684 <code>setObject<\/code> \u65b9\u6cd5\u5c07\u5716\u7247\u52a0\u5165\u7de9\u5b58\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-swift line-numbers\">imageCache.setObject(image, forKey: \"imageKey\")<\/code><\/pre>\n<p>\u6700\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 NSCache \u7684 <code>object<\/code> \u65b9\u6cd5\u53d6\u51fa\u5716\u7247\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-swift line-numbers\">if let cachedImage = imageCache.object(forKey: \"imageKey\") {\n    \/\/ \u4f7f\u7528\u7de9\u5b58\u7684\u5716\u7247\n}<\/code><\/pre>\n<h2>\u932f\u8aa4\u6392\u9664<\/h2>\n<p>\u5728\u4f7f\u7528 NSCache \u9032\u884c\u5716\u7247\u7de9\u5b58\u7684\u904e\u7a0b\u4e2d\uff0c\u60a8\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u554f\u984c\uff1a<\/p>\n<ul>\n<li><strong>\u5716\u7247\u672a\u80fd\u6210\u529f\u7de9\u5b58\uff1a<\/strong>\u78ba\u4fdd\u5716\u7247\u5c0d\u8c61\u4e0d\u70ba nil\uff0c\u4e26\u6aa2\u67e5\u95dc\u9375\u5b57\u7684\u6b63\u78ba\u6027\u3002<\/li>\n<li><strong>\u53d6\u51fa\u5716\u7247\u5931\u6557\uff1a<\/strong>\u6aa2\u67e5\u662f\u5426\u4f7f\u7528\u4e86\u6b63\u78ba\u7684\u95dc\u9375\u5b57\uff0c\u4e26\u78ba\u8a8d\u5716\u7247\u662f\u5426\u5df2\u7d93\u88ab\u52a0\u5165\u7de9\u5b58\u3002<\/li>\n<\/ul>\n<h2>\u5ef6\u4f38\u61c9\u7528<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u5716\u7247\u7de9\u5b58\u6280\u8853\uff0c\u60a8\u9084\u53ef\u4ee5\u8003\u616e\u5c07 NSCache \u8207\u5176\u4ed6\u6280\u8853\u7d50\u5408\u4f7f\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528 <strong>Kingfisher<\/strong> \u6216 <strong>SDWebImage<\/strong> \u7b49\u7b2c\u4e09\u65b9\u5eab\u4f86\u7c21\u5316\u5716\u7247\u4e0b\u8f09\u548c\u7de9\u5b58\u7684\u6d41\u7a0b\u3002<\/li>\n<li>\u5728\u80cc\u666f\u57f7\u884c\u7dd2\u4e2d\u4e0b\u8f09\u5716\u7247\u4ee5\u907f\u514d\u963b\u585e\u4e3b\u57f7\u884c\u7dd2\uff0c\u4e26\u4f7f\u7528 <strong>DispatchQueue<\/strong> \u4f86\u7ba1\u7406\u7dda\u7a0b\u3002<\/li>\n<\/ul>\n<h2>\u53c3\u8003\u8cc7\u6599<\/h2>\n<p>\u5982\u9700\u6df1\u5165\u4e86\u89e3\uff0c\u60a8\u53ef\u4ee5\u53c3\u8003\u4ee5\u4e0b\u6587\u7ae0\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/www.raywenderlich.com\/567-swift-image-caching-tutorial-getting-started\" target=\"_blank\" rel=\"noopener\">Swift \u5716\u7247\u7de9\u5b58\u6559\u5b78 &#8211; 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