{"id":708,"date":"2023-06-01T12:04:58","date_gmt":"2023-06-01T04:04:58","guid":{"rendered":"https:\/\/www.zhidianwl.com\/zhidian\/?p=708"},"modified":"2023-06-01T12:04:58","modified_gmt":"2023-06-01T04:04:58","slug":"ios%e5%bc%80%e5%8f%91-%e5%b9%b6%e5%8f%91%e5%a4%84%e7%90%86%e5%8e%9f%e7%90%86%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.com\/zhidian\/2023\/708\/","title":{"rendered":"ios\u5f00\u53d1 \u5e76\u53d1\u5904\u7406\u539f\u7406\u4ecb\u7ecd"},"content":{"rendered":"

iOS\u5f00\u53d1\u4e2d\uff0c\u5e76\u53d1\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u5229\u7528\u8bbe\u5907\u7684\u591a\u6838\u5904\u7406\u80fd\u529b\uff0c\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u54cd\u5e94\u901f\u5ea6\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecdiOS\u5f00\u53d1\u4e2d\u5e76\u53d1\u7684\u539f\u7406\u548c\u76f8\u5173\u77e5\u8bc6\u70b9\u3002<\/p>\n

1. \u5e76\u53d1\u7684\u57fa\u672c\u6982\u5ff5<\/p>\n

\u5e76\u53d1\u662f\u6307\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\uff0c\u591a\u4e2a\u4efb\u52a1\u540c\u65f6\u8fdb\u884c\u3002\u5728iOS\u5f00\u53d1\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u7ebf\u7a0b\u6280\u672f\u5b9e\u73b0\u5e76\u53d1\u3002\u591a\u7ebf\u7a0b\u662f\u6307\u5728\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u540c\u65f6\u6267\u884c\u591a\u4e2a\u7ebf\u7a0b\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u62e5\u6709\u81ea\u5df1\u7684\u6267\u884c\u73af\u5883\u548c\u6267\u884c\u5e8f\u5217\u3002<\/p>\n

2. iOS\u4e2d\u7684\u591a\u7ebf\u7a0b\u6280\u672f<\/p>\n

iOS\u4e2d\u63d0\u4f9b\u4e86\u4e24\u79cd\u591a\u7ebf\u7a0b\u6280\u672f\uff1aNSThread\u548cGCD\u3002NSThread\u662fObjective-C\u4e2d\u7684\u4e00\u4e2a\u7c7b\uff0c\u53ef\u4ee5\u7528\u6765\u521b\u5efa\u548c\u7ba1\u7406\u7ebf\u7a0b\uff1bGCD\u662fGrand Central Dispatch\u7684\u7f29\u5199\uff0c\u662f\u82f9\u679c\u516c\u53f8\u63a8\u51fa\u7684\u4e00\u79cd\u5e76\u53d1\u7f16\u7a0b\u6280\u672f\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u65b9\u4fbf\u5730\u5229\u7528\u591a\u6838\u5904\u7406\u5668\u3002<\/p>\n

3. GCD\u7684\u4f7f\u7528<\/p>\n

GCD\u662fiapp\u539f\u751f\u6253\u5305<\/a>\u4e00\u4e2a\u57fa\u4e8e\u961f\u5217\u7684\u5e76\u53d1\u7f16\u7a0b\u6280\u672f\uff0c\u5b83\u5c06\u4efb\u52a1\u653e\u5165\u961f\u5217\u4e2d\uff0c\u6839\u636e\u961f\u5217\u7684\u7c7b\u578b\u548c\u4f18\u5148\u7ea7\u6765\u6267\u884c\u4efb\u52a1\u3002GCD\u6709\u4e24\u79cd\u961f\u5217\uff1a\u4e32\u884c\u961f\u5217\u548c\u5e76\u53d1\u961f\u5217\u3002\u4e32\u884c\u961f\u5217\u6309\u7167\u5148\u8fdb\u5148\u51fa\u7684\u987a\u5e8f\u6267\u884c\u4efb\u52a1\uff0c\u800c\u5e76\u53d1\u961f\u5217\u53ef\u4ee5\u540c\u65f6\u6267\u884c\u591a\u4e2a\u4efb\u52a1\u3002<\/p>\n

GCD\u7684\u57fa\u672c\u4f7f\u7528\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n

\uff081\uff09\u521b\u5efa\u4efb\u52a1<\/p>\n

\u4efb\u52a1\u662f\u4e00\u4e2a\u9700\u8981\u6267\u884c\u7684\u4ee3\u7801\u5757\uff0c\u53ef\u4ee5\u4f7f\u7528block\u6765\u521b\u5efa\u4efb\u52a1\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u4efb\u52a1\uff0c\u8f93\u51faHello World\uff1a<\/p>\n

“`<\/p>\n

dispatch_block_t task = ^{<\/p>\n

NSLog(@”Hello World”);<\/p>\n

};<\/p>\n

“`<\/p>\n

\uff082\uff09\u521b\u5efa\u961f\u5217<\/p>\n

GCD\u4e2d\u6709\u4e24\u79cd\u961f\u5217\uff1a\u4e32\u884c\u961f\u5217\u548c\u5e76\u53d1\u961f\u5217\u3002\u53ef\u4ee5\u4f7f\u7528dispatch_queue_create\u51fd\u6570\u6765\u521b\u5efa\u961f\u5217\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u4e32\u884c\u961f\u5217\uff1a<\/p>\n

“`<\/p>\n

dispatch_queue_t serialQueue = dispatch_queue_create(“com.example.serialQueue”, DISPATCH_QUEUE_SERIAL);<\/p>\n

“`<\/p>\n

\uff083\uff09\u5c06\u4efb\u52a1\u6dfb\u52a0\u5230\u961f\u5217\u4e2d<\/p>\n

\u53ef\u4ee5\u4f7f\u7528dispatch_async\u51fd\u6570\u5c06\u4efb\u52a1\u6dfb\u52a0\u5230\u961f\u5217\u4e2d\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u5c06\u4e0a\u9762\u521b\u5efa\u7684\u4efb\u52a1\u6dfb\u52a0\u5230\u4e32\u884c\u961f\u5217\u4e2d\uff1a<\/p>\n

“`<\/p>\n

dispatch_async(serialQueue, task);<\/p>\n

“`<\/p>\n

\uff084\uff09\u7b49\u5f85\u4efb\u52a1\u5b8c\u6210<\/p>\n

\u53ef\u4ee5\u4f7f\u7528dispatch_sync\u51fd\u6570\u7b49\u5f85\u4efb\u52a1\u5b8c\u6210\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u7b49app\u542f\u52a8\u9875\u9762\u914d\u7f6e<\/a>\u5f85\u4e0a\u9762\u7684\u4efb\u52a1\u5b8c\u6210\u540e\u518d\u6267\u884c\u4e0b\u4e00\u4e2a\u4efb\u52a1\uff1a<\/p>\n

“`<\/p>\n

dispatch_sync(serialQueue, ^{<\/p>\n

NSLog(@”Task completed.”);<\/p>\n

});<\/p>\n

“`<\/p>\n

\uff085\uff09\u91ca\u653e\u961f\u5217<\/p>\n

\u4f7f\u7528\u5b8c\u961f\u5217\u540e\uff0c\u9700\u8981\u91ca\u653e\u5b83\u3002\u53ef\u4ee5\u4f7f\u7528dispatc<\/p>\n

<\/figure>\n<\/p>\n

h_release\u51fd\u6570\u91ca\u653e\u961f\u5217\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u91ca\u653e\u4e0a\u9762\u521b\u5efa\u7684\u4e32\u884c\u961f\u5217\uff1a<\/p>\n

“`<\/p>\n

dispatch_release(serialQueue);<\/p>\n

“`<\/p>\n

4. GCD\u7684\u4f18\u52bf\u548c\u9002\u7528\u573a\u666f<\/p>\n

GCD\u6709\u4ee5\u4e0b\u4f18\u52bf\uff1a<\/p>\n

\uff081\uff09\u7b80\u5355\u6613\u7528\uff1aGCD\u4f7f\u7528\u7b80\u5355\uff0c\u53ea\u9700\u8981\u51e0\u884c\u4ee3\u7801\u5c31\u53ef\u4ee5\u5b9e\u73b0\u5e76\u53d1\u7f16\u7a0b\u3002<\/p>\n

\uff082\uff09\u9ad8\u6548\uff1aGCD\u4f7f\u7528\u4e86\u4e00\u4e9b\u4f18\u5316\u6280\u672f\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u5229\u7528\u8bbe\u5907\u7684\u591a\u6838\u5904\u7406\u80fd\u529b\uff0c\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n

\uff083\uff09\u5b89\u5168\u53ef\u9760\uff1aGCD\u4f7f\u7528\u4e86\u4e00\u4e9b\u5b89\u5168\u673a\u5236\uff0c\u53ef\u4ee5\u907f\u514d\u4e00\u4e9b\u5e38\u89c1\u7684\u5e76\u53d1\u7f16\u7a0b\u95ee\u9898\uff0c\u5982\u6b7b\u9501\u548c\u7ade\u4e89\u6761\u4ef6\u3002<\/p>\n

GCD\u9002\u7528\u4e8e\u4ee5\u4e0b\u573a\u666f\uff1a<\/p>\n

\uff081\uff09\u9700\u8981\u6267\u884c\u4e00\u4e9b\u8017\u65f6\u7684\u64cd\u4f5c\uff0c\u5982\u7f51\u7edc\u8bf7\u6c42\u3001\u6587\u4ef6\u8bfb\u5199\u7b49\u3002<\/p>\n

\uff082\uff09\u9700\u8981\u540c\u65f6\u6267\u884c\u591a\u4e2a\u4efb\u52a1\uff0c\u5982\u4e0b\u8f7d\u591a\u4e2a\u6587\u4ef6\u3001\u5904\u7406\u591a\u4e2a\u56fe\u7247\u7b49\u3002<\/p>\n

\uff083\uff09\u9700\u8981\u5728\u540e\u53f0\u6267\u884c\u4e00\u4e9b\u4efb\u52a1\uff0c\u5982\u540e\u53f0\u4e0b\u8f7d\u3001\u540e\u53f0\u4e0a\u4f20\u7b49\u3002<\/p>\n

5. \u603b\u7ed3<\/p>\n

\u5e76\u53d1\u662fiOS\u5f00\u53d1\u4e2d\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u5229\u7528\u8bbe\u5907\u7684\u591a\u6838\u5904\u7406\u80fd\u529b\uff0c\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u54cd\u5e94\u901f\u5ea6\u3002GCD\u662fiOS\u4e2d\u7684\u4e00\u4e2a\u5e76\u53d1\u7f16\u7a0b\u6280\u672f\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u65b9\u4fbf\u5730\u5229\u7528\u591a\u6838\u5904\u7406\u5668\u3002\u5728\u4f7f\u7528GCD\u65f6\uff0c\u6211\u4eec\u9700\u8981\u4e86\u89e3\u961f\u5217\u7684\u57fa\u672c\u6982\u5ff5\u548c\u4f7f\u7528\u65b9\u6cd5\uff0c\u4ee5\u53caGCD\u7684\u4f18\u52bf\u548c\u9002\u7528\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

iOS\u5f00\u53d1\u4e2d\uff0c\u5e76\u53d1\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u5229\u7528\u8bbe\u5907\u7684\u591a\u6838\u5904\u7406\u80fd\u529b\uff0c\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u54cd\u5e94\u901f\u5ea6\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecdiOS\u5f00\u53d1\u4e2d\u5e76\u53d1\u7684\u539f\u7406\u548c\u76f8\u5173\u77e5\u8bc6\u70b9\u30021. \u5e76\u53d1\u7684\u57fa\u672c\u6982\u5ff5\u5e76\u53d1\u662f\u6307<\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[166,1646,1645,1647,1644],"class_list":["post-708","post","type-post","status-publish","format-standard","hentry","category-zuoapp","tag-166","tag-1646","tag-x5","tag-apk","tag-1644"],"_links":{"self":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts\/708","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/comments?post=708"}],"version-history":[{"count":0,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts\/708\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/media?parent=708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/categories?post=708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/tags?post=708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}