{"id":29977,"date":"2023-05-16T12:51:58","date_gmt":"2023-05-16T04:51:58","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=29977"},"modified":"2023-07-30T23:56:03","modified_gmt":"2023-07-30T15:56:03","slug":"swift%e5%8d%8f%e7%a8%8b%e9%95%bf%e4%bb%80%e4%b9%88%e6%a0%b7","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/29977.html","title":{"rendered":"Swift\u534f\u7a0b\u957f\u4ec0\u4e48\u6837"},"content":{"rendered":"
\n

\u7b80\u5355\u6765\u8bf4\u5c31\u662f\uff0cSwift\u534f\u7a0b\u662f\u4e00\u79cd\u975e\u62a2\u5360\u5f0f\u6216\u8005\u8bf4\u534f\u4f5c\u5f0f\u7684\u8ba1\u7b97\u673a\u7a0b\u5e8f\u5e76\u53d1\u8c03\u5ea6\u7684\u5b9e\u73b0\uff0c\u7a0b\u5e8f\u53ef\u4ee5\u4e3b\u52a8\u6302\u8d77\u6216\u8005\u6062\u590d\u6267\u884c\u3002\u8bf4\u8d77\u4efb\u52a1\u8c03\u5ea6\uff0c\u6211\u4eec\u5f88\u81ea\u7136\u5730\u60f3\u5230\u7ebf\u7a0b\u3002\u4ece\u4efb\u52a1\u8f7d\u4f53\u7684\u89d2\u5ea6\u6765\u8bb2\uff0c\u534f\u7a0b\u548c\u7ebf\u7a0b\u5728\u5e94\u7528\u573a\u666f\u4e0a\u7684\u786e\u6709\u5f88\u5927\u7684\u91cd\u53e0\u4e4b\u5904\u3002<\/p>\n<\/blockquote>\n

\n
\"\"<\/figure>\n<\/div>\n

\u4e00\u3001Swift\u534f\u7a0b<\/strong><\/h2>\n

\u7b80\u5355\u6765\u8bf4\u5c31\u662f\uff0cSwift\u534f\u7a0b\u662f\u4e00\u79cd\u975e\u62a2\u5360\u5f0f\u6216\u8005\u8bf4\u534f\u4f5c\u5f0f\u7684\u8ba1\u7b97\u673a\u7a0b\u5e8f\u5e76\u53d1\u8c03\u5ea6\u7684\u5b9e\u73b0\uff0c\u7a0b\u5e8f\u53ef\u4ee5\u4e3b\u52a8\u6302\u8d77\u6216\u8005\u6062\u590d\u6267\u884c\u3002\u8bf4\u8d77\u4efb\u52a1\u8c03\u5ea6\uff0c\u6211\u4eec\u5f88\u81ea\u7136\u5730\u60f3\u5230\u7ebf\u7a0b\u3002\u4ece\u4efb\u52a1\u8f7d\u4f53\u7684\u89d2\u5ea6\u6765\u8bb2\uff0c\u534f\u7a0b\u548c\u7ebf\u7a0b\u5728\u5e94\u7528\u573a\u666f\u4e0a\u7684\u786e\u6709\u5f88\u5927\u7684\u91cd\u53e0\u4e4b\u5904\u3002<\/p>\n

\u534f\u7a0b\u6700\u521d\u4e5f\u786e\u5b9e\u662f\u88ab\u5e94\u7528\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u7684\u4efb\u52a1\u8c03\u5ea6\u7684\u3002\u53ea\u4e0d\u8fc7\u540e\u6765\u62a2\u5360\u5f0f\u7684\u8c03\u5ea6\u6210\u4e3a\u4e86\u64cd\u4f5c\u7cfb\u7edf\u7684\u4e3b\u6d41\u5b9e\u73b0\uff0c\u56e0\u6b64\u4ee5\u534f\u7a0b\u4e3a\u6267\u884c\u4efb\u52a1\u5355\u4f4d\u7684\u534f\u4f5c\u5f0f\u7684\u8c03\u5ea6\u5c31\u5f88\u5c11\u51fa\u73b0\u5728\u6211\u4eec\u773c\u524d\u4e86\u3002\u6211\u4eec\u73b0\u5728\u63d0\u5230\u7ebf\u7a0b\uff0c\u57fa\u672c\u4e0a\u6307\u7684\u5c31\u662f\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u7ebf\u7a0b\uff1b\u800c\u63d0\u5230\u534f\u7a0b\uff0c\u7edd\u5927\u591a\u6570\u90fd\u662f\u7f16\u7a0b\u8bed\u8a00\u5c42\u9762\u5b9e\u73b0\u7684\u4efb\u52a1\u8f7d\u4f53 \u2014\u2014 \u6211\u4eec\u770b\u5f85\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u5c31\u597d\u50cf\u4e00\u8258\u8f6e\u8239\u4e00\u6837\uff0c\u800c\u534f\u7a0b\u4f3c\u4e4e\u5c31\u662f\u88c5\u5728\u4e0a\u9762\u7684\u4e00\u4e2a\u96c6\u88c5\u7bb1\u3002<\/p>\n

\u4ece\u4efb\u52a1\u7684\u627f\u8f7d\u4e0a\u6765\u8bb2\uff0c\u7ebf\u7a0b\u6bd4\u534f\u7a0b\u66f4\u91cd\uff1b\u4ece\u8c03\u5ea6\u6267\u884c\u7684\u80fd\u529b\u6765\u8bb2\uff0c\u7ebf\u7a0b\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u8c03\u5ea6\u7684\uff0c\u800c\u534f\u7a0b\u5219\u662f\u7531\u7f16\u7a0b\u8bed\u8a00\u7684\u8fd0\u884c\u65f6\u8c03\u5ea6\u7684\u3002\u6240\u4ee5\u7edd\u5927\u591a\u6570\u7684\u7f16\u7a0b\u8bed\u8a00\u5f53\u4e2d\u5b9e\u73b0\u7684\u534f\u7a0b\u90fd\u5177\u5907\u66f4\u52a0\u8f7b\u91cf\u548c\u66f4\u52a0\u7075\u6d3b\u7684\u7279\u70b9\u3002\u5bf9\u4e8e\u9ad8\u8d1f\u8f7d\u7684\u670d\u52a1\u7aef\uff0c\u534f\u7a0b\u7684\u8f7b\u91cf\u578b\u5c31\u8868\u73b0\u5730\u5f88\u7a81\u51fa\uff1b\u800c\u5bf9\u4e8e\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u7279\u522b\u662f\u4e0e\u5916\u90e8\u5f02\u6b65\u4ea4\u4e92\u7684\u573a\u666f\uff0c\u534f\u7a0b\u7684\u7075\u6d3b\u6027\u5c31\u53ef\u4ee5\u53d1\u6325\u4f5c\u7528\u3002<\/p>\n

\u5bf9\u4e8e Swift \u800c\u8a00\uff0c\u4e3b\u8981\u5e94\u5bf9\u7684\u81ea\u7136\u662f\u7b80\u5316\u590d\u6742\u7684\u5f02\u6b65\u903b\u8f91\u3002\u800c\u9488\u5bf9\u7c7b\u4f3c\u7684\u573a\u666f\uff0c\u5404\u5bb6\u5b9e\u9645\u4e0a\u5df2\u7ecf\u7ed9\u51fa\u4e86\u8fd1\u4e4e\u4e00\u81f4\u7684\u8bed\u6cd5\uff1aasync\/await\u3002\u5176\u4e2d async \u7528\u4e8e\u4fee\u9970\u51fd\u6570\uff0c\u5c06\u5176\u58f0\u660e\u4e3a\u4e00\u4e2a\u5f02\u6b65\u51fd\u6570\uff0cawait \u5219\u7528\u4e8e\u975e\u963b\u585e\u5730\u7b49\u5f85\u5f02\u6b65\u51fd\u6570\u7684\u7ed3\u679c \u2014\u2014 Swift \u4e5f\u4e0d\u80fd\u514d\u4fd7\u3002<\/p>\n

async\/await<\/strong><\/h3>\n

\u4e3a\u4e86\u5feb\u901f\u4e86\u89e3 Swift \u534f\u7a0b\u7684\u8bed\u6cd5\uff0c\u6211\u4eec\u5148\u7ed9\u51fa\u4e00\u6bb5\u4ee3\u7801\uff0c\u8ba9\u5927\u5bb6\u611f\u53d7\u4e00\u4e0b\u5b83\u7684\u6837\u5b50\u3002<\/p>\n

\u5728\u8fd9\u4e2a\u4f8b\u5b50\u5f53\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 Alamofire \u8fd9\u4e2a\u7f51\u7edc\u6846\u67b6\u53d1\u8d77\u7f51\u7edc\u8bf7\u6c42\uff1a<\/p>\n

static<\/strong> func<\/strong> getImageData<\/strong>(url: String) async throws<\/strong> -> Data{<\/p>\n

\u00a0 try<\/strong> await AF.request(url).responseDataAsync() \/\/ <\/em>\u8c03\u7528\u5f02\u6b65\u51fd\u6570\uff0c\u6302\u8d77\u7b49\u5f85\u7ed3\u679c<\/em><\/p>\n

}<\/p>\n

\u8fd9\u4e2a responseDataAsync \u51fd\u6570\u662f\u6211\u5bf9 Alamofire \u6846\u67b6\u5f53\u4e2d\u7684 DataRequest \u505a\u7684\u4e00\u4e2a\u6269\u5c55\uff1a<\/p>\n

extension<\/strong> DataRequest<\/strong> {<\/p>\n

\u00a0\u00a0\u00a0 func<\/strong> responseDecodableAsync<\/strong><T: Decodable>(\u2026) async throws<\/strong> -> T {<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2026<\/p>\n

\u00a0\u00a0\u00a0 }<\/p>\n

}<\/p>\n

\u5b83\u7684\u5177\u4f53\u5b9e\u73b0\u6211\u4eec\u5c06\u5728\u540e\u9762\u7ed9\u51fa\u3002<\/p>\n

\u6211\u4eec\u5148\u8bf7\u5927\u5bb6\u89c2\u5bdf\u8fd9\u4e24\u4e2a\u51fd\u6570\u7684\u5f62\u5f0f\u4e0e\u666e\u901a\u51fd\u6570\u6709\u4ec0\u4e48\u4e0d\u540c\u3002\u6211\u76f8\u4fe1\u4f60\u5f88\u5bb9\u6613\u5c31\u80fd\u770b\u51fa\u6765\uff0c\u51fd\u6570\u58f0\u660e\u7684\u8fd4\u56de\u503c\u5904\u591a\u4e86\u4e2a async\uff0c\u800c\u5728\u8c03\u7528\u51fd\u6570\u7684\u65f6\u5019\u5219\u591a\u4e86\u4e2a await\u3002\u4f7f\u7528 async \u4fee\u9970\u7684\u51fd\u6570\u4e0e\u666e\u901a\u7684\u540c\u6b65\u51fd\u6570\u4e0d\u540c\uff0c\u5b83\u88ab\u79f0\u4f5c\u5f02\u6b65\u51fd\u6570\u3002\u5f02\u6b65\u51fd\u6570\u53ef\u4ee5\u8c03\u7528\u5176\u4ed6\u5f02\u6b65\u51fd\u6570\uff0c\u800c\u540c\u6b65\u51fd\u6570\u5219\u4e0d\u80fd\u8c03\u7528\u5f02\u6b65\u51fd\u6570\u3002<\/p>\n

\u6b63\u5982\u6211\u4eec\u524d\u9762\u63d0\u5230\u7684\uff0casync\/await \u8fd9\u6837\u7684\u5f62\u5f0f\u5176\u5b9e\u4e5f\u662f\u73b0\u5728\u4e3b\u6d41\u7f16\u7a0b\u8bed\u8a00\u6240\u652f\u6301\u7684\u65b9\u5f0f\uff0c\u4f8b\u5982\uff1a<\/p>\n

JavaScript<\/strong><\/p>\n

async function<\/strong> delay(seconds) {<\/p>\n

\u00a0 \u2026<\/p>\n

}<\/p>\n

async function<\/strong> asyncCall() {<\/p>\n

\u00a0\u00a0\u00a0 await delay(2); \/\/ <\/em>\u8c03\u7528\u5f02\u6b65\u51fd\u6570\uff0c\u6302\u8d77\u7b49\u5f85\u7ed3\u679c<\/em><\/p>\n

\u00a0\u00a0\u00a0 \u2026<\/p>\n

}<\/p>\n

\u6211\u4eec\u770b\u5230\u5728 JavaScript \u5f53\u4e2d\u540c\u6837\u53ef\u4ee5\u901a\u8fc7 async \u5173\u952e\u5b57\u6765\u58f0\u660e\u4e00\u4e2a\u652f\u6301\u6302\u8d77\u8c03\u7528\u7684\u5f02\u6b65\u51fd\u6570\uff0c\u800c\u5728\u60f3\u8981\u8c03\u7528\u53e6\u4e00\u4e2a\u5f02\u6b65\u51fd\u6570\u7684\u65f6\u5019\uff0c\u5219\u9700\u8981\u4f7f\u7528 await\u3002\u4ece\u5f62\u5f0f\u4e0a\u6765\u770b\uff0cSwift \u53ea\u662f\u628a async \u653e\u5230\u4e86\u51fd\u6570\u58f0\u660e\u7684\u540e\u9762\u800c\u5df2\u3002<\/p>\n

\u6211\u4eec\u4e0d\u59a8\u4e5f\u770b\u4e00\u4e0b Kotlin \u7684\u7684\u534f\u7a0b\uff0cKotlin \u5f53\u4e2d\u4e5f\u6709\u5f02\u6b65\u51fd\u6570\u7684\u6982\u5ff5\uff0c\u53ea\u4e0d\u8fc7\u5b83\u9009\u62e9\u4e86 suspend \u8fd9\u4e2a\u5173\u952e\u5b57\uff0c\u56e0\u6b64\u6211\u4eec\u5728 Kotlin \u5f53\u4e2d\u66f4\u591a\u7684\u79f0\u8fd9\u6837\u7684\u51fd\u6570\u4e3a\u6302\u8d77\u51fd\u6570\uff08\u5176\u5b9e\u662f\u53ef\u6302\u8d77\u7684\u51fd\u6570\uff09\uff1a<\/p>\n

Kotlin<\/strong><\/p>\n

suspend<\/strong> fun<\/strong> delay<\/strong>(seconds: Long) {<\/p>\n

\u00a0 \u2026<\/p>\n

}<\/p>\n

suspend<\/strong> fun<\/strong> asyncCall<\/strong>() {<\/p>\n

\u00a0 delay(2) \/\/ <\/em>\u8c03\u7528 suspend \u51fd\u6570\uff0c\u5f02\u6b65\u6302\u8d77<\/em><\/p>\n

}<\/p>\n

\u4ece\u8bed\u6cd5\u7684\u5f62\u5f0f\u4e0a\u6765\u770b\uff0cKotlin \u7684 suspend \u5173\u952e\u5b57\u5728\u51fd\u6570\u58f0\u660e\u65f6\u5145\u5f53\u4e86 async \u7684\u4f5c\u7528\uff0c\u628a\u51fd\u6570\u58f0\u660e\u4e3a\u5f02\u6b65\u51fd\u6570\uff1b\u800c\u5728\u8c03\u7528 suspend \u51fd\u6570\u7684\u65f6\u5019\u5219\u76f4\u63a5\u76f8\u5f53\u4e8e\u5f3a\u52a0\u4e86 await\uff0c\u5982\u679c\u88ab\u8c03\u7528\u7684 suspend \u51fd\u6570\u4f1a\u6302\u8d77\uff0c\u90a3\u4e48\u6211\u4eec\u5728\u8fd9\u4e2a\u8c03\u7528\u70b9\u4e5f\u5c31\u53ea\u80fd\u6302\u8d77\u5f53\u524d\u5f02\u6b65\u51fd\u6570\u6765\u7b49\u5f85\u88ab\u8c03\u7528\u7684\u5f02\u6b65\u51fd\u6570\u7684\u7ed3\u679c\u8fd4\u56de\u4e86\u3002\u5b9e\u9645\u4e0a Swift \u7684\u5f02\u6b65\u51fd\u6570\u8c03\u7528\u65f6\u4e5f\u4f1a\u8981\u6c42\u4f7f\u7528 await\uff0c\u800c JavaScript \u7684 await \u5219\u5728\u4f7f\u7528\u548c\u4e0d\u4f7f\u7528\u65f6\u5206\u522b\u6709\u4e0d\u540c\u7684\u542b\u4e49\uff0c\u6709\u5173\u8fd9\u4e2a\u8bbe\u8ba1\u95ee\u9898\u7684\u8ba8\u8bba\uff0c\u6211\u4eec\u540e\u9762\u518d\u63a2\u8ba8\u3002<\/p>\n

\u6240\u4ee5\u8bb2\u5230\u8fd9\u91cc\u6211\u5e0c\u671b\u5927\u5bb6\u80fd\u591f\u4e86\u89e3\u4e24\u4e2a\u70b9\uff1a<\/p>\n

    \n
  1. \u8fd9\u4e9b\u7f16\u7a0b\u8bed\u8a00\u901a\u8fc7 async \u5173\u952e\u5b57\u5c06\u51fd\u6570\u5206\u4e3a\u4e24\u7c7b\uff0c\u8fc7\u53bb\u7684\u666e\u901a\u51fd\u6570\u4e3a\u540c\u6b65\u51fd\u6570\uff0c\u88ab\u4fee\u9970\u7684\u51fd\u6570\u5219\u4e3a\u5f02\u6b65\u51fd\u6570\u3002<\/li>\n
  2. \u8c03\u7528\u5f02\u6b65\u51fd\u6570\u7684\u65f6\u5019\u9700\u8981\u4f7f\u7528 await \u5173\u952e\u5b57\uff0c\u4f7f\u5f97\u8fd9\u4e2a\u5f02\u6b65\u8c03\u7528\u62e5\u6709\u4e86\u6302\u8d77\u7b49\u5f85\u6062\u590d\u7684\u8bed\u4e49\u3002<\/li>\n<\/ol>\n

    async\/await <\/strong>\u89e3\u51b3\u4e86\u600e\u6837\u7684\u95ee\u9898<\/strong><\/h2>\n

    \u5728 Swift 5.5 \u4ee5\u524d\uff0cgetImageData \u7684\u5b9e\u73b0\u901a\u5e38\u4f9d\u8d56\u56de\u8c03\u6765\u5b9e\u73b0\u7ed3\u679c\u7684\u8fd4\u56de\uff1a<\/p>\n

    static<\/strong> func<\/strong> getImageData<\/strong>(url: String,<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onSuccess: @escaping (Data) -> Void,<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onError: @escaping (Error) -> Void) {<\/p>\n

    \u00a0\u00a0\u00a0 AF.request(url).responseData { response in<\/strong><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 switch<\/strong> response.result {<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 case<\/strong> .success(let<\/strong> data):<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onSuccess(data)<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 case<\/strong> .failure(let<\/strong> error):<\/p>\n

    \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0onError(error)<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }<\/p>\n

    \u00a0\u00a0\u00a0 }<\/p>\n

    }<\/p>\n

    \u5f88\u81ea\u7136\u5730\uff0c\u6211\u4eec\u5982\u679c\u60f3\u8981\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570\uff0c\u4ee3\u7801\u5199\u51fa\u6765\u5c31\u50cf\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n

    GitHubApi.getImageData(<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 url: avatar_url,<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onSuccess: { data in<\/strong><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2026<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 },<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onError: { error in<\/strong><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2026<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 })<\/p>\n

    \u90a3\u5982\u679c\u6211\u60f3\u8981\u5728\u56de\u8c03\u5f53\u4e2d\u518d\u89e6\u53d1\u4e00\u4e9b\u5176\u4ed6\u7684\u5f02\u6b65\u64cd\u4f5c\uff0c\u7ed3\u679c\u4f1a\u600e\u6837\u5462\uff1f<\/p>\n

    GitHubApi.getImageData(<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 url: avatar_url,<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onSuccess: { data in<\/strong><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2026<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 cropImage(<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onSuccess: { croppedImage in<\/strong><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 saveImage(<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onSuccess: {<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2026<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 },<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onError: {<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2026<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 })<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 },<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onError: {<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2026<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 })<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0},<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 onError: { error in<\/strong><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2026<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 })<\/p>\n

    \u4e0d\u96be\u53d1\u73b0\uff0c\u968f\u7740\u903b\u8f91\u590d\u6742\u5ea6\u7684\u589e\u52a0\uff0c\u4ee3\u7801\u7684\u7f29\u8fdb\u4f1a\u8d8a\u6765\u8d8a\u6df1\uff0c\u53ef\u7ef4\u62a4\u6027\u4e5f\u8d8a\u6765\u8d8a\u5dee\u3002<\/p>\n

    \u4f46\u8fd9\u6bb5\u4ee3\u7801\u5982\u679c\u7528 async\/await \u6539\u9020\u4e00\u4e0b\uff0c\u7ed3\u679c\u4f1a\u600e\u6837\u5462\uff1f<\/p>\n

    do<\/strong> {<\/p>\n

    \u00a0\u00a0\u00a0 let<\/strong> data = await GitHubApiAsync.getImageData(url: userItem.user.avatar_url)<\/p>\n

    \u00a0\u00a0\u00a0 let<\/strong> croppedImage = await cropImage(data)<\/p>\n

    \u00a0\u00a0\u00a0 await saveImage(croppedImage)<\/p>\n

    } catch<\/strong> {<\/p>\n

    \u00a0\u00a0\u00a0 \u2026<\/p>\n

    }<\/p>\n

    \u4e0e getImageData \u51fd\u6570\u7684\u540c\u6b65\u7248\u672c\u76f8\u6bd4\uff0conSuccess \u548c onError \u8fd9\u4e24\u4e2a\u56de\u8c03\u6ca1\u6709\u4e86\u3002\u5c3d\u7ba1\u7ed3\u679c\u4ecd\u7136\u662f\u5f02\u6b65\u8fd4\u56de\u7684\uff0c\u4f46\u5199\u8d77\u6765\u5374\u50cf\u662f\u540c\u6b65\u8fd4\u56de\u7684\u4e00\u6837\u3002\u8fd9\u6837\u770b\u6765\uff0c\u8fd0\u7528 async\/await \u53ef\u4ee5\u4f7f\u56de\u8c03\u7684\u5c42\u7ea7\u53d8\u5c11\uff0c\u4ece\u800c\u4f7f\u5f97\u4ee3\u7801\u903b\u8f91\u53d8\u5f97\u66f4\u6e05\u6670\u3002<\/p>\n

    \u5ef6\u4f38\u9605\u8bfb\uff1a
    <\/strong><\/p>\n

    \u4e8c\u3001Task \u7684\u521b\u5efa<\/strong><\/h2>\n

    \u5f02\u6b65\u51fd\u6570\u7684\u5173\u952e\u5728\u4e8e Continuation\u3002\u6240\u4ee5\uff0c\u53ea\u8981\u8c03\u7528\u5f02\u6b65\u51fd\u6570\u7684\u4f4d\u7f6e\u80fd\u8ba9\u5f02\u6b65\u51fd\u6570\u83b7\u53d6\u5230 Continuation\uff0c\u90a3\u4e48\u8c03\u7528\u5f02\u6b65\u51fd\u6570\u7684\u95ee\u9898\u5c31\u89e3\u51b3\u4e86\u3002Swift \u6807\u51c6\u5e93\u63d0\u4f9b\u4e86 Task \u7c7b\u6765\u63d0\u4f9b\u8fd9\u4e2a\u80fd\u529b\u3002<\/p>\n

    \u6211\u4eec\u7ed9\u51fa Task \u7684\u6784\u9020\u5668\u7684\u5b9a\u4e49\uff1a<\/p>\n

    public init(<\/p>\n

    \u00a0\u00a0\u00a0 priority: _Concurrency.TaskPriority? = nil,<\/p>\n

    \u00a0\u00a0\u00a0 operation: @escaping @Sendable () async -> Success)<\/p>\n

    public init(<\/p>\n

    \u00a0\u00a0\u00a0 priority: _Concurrency.TaskPriority? = nil,<\/p>\n

    \u00a0\u00a0\u00a0 operation: @escaping @Sendable () async throws -> Success)<\/p>\n

    \u5b83\u63a5\u6536\u4e00\u4e2a\u5f02\u6b65\u95ed\u5305\u4f5c\u4e3a\u53c2\u6570\uff0c\u521b\u5efa\u4e00\u4e2a Task \u5b9e\u4f8b\u5e76\u8fd0\u884c\u8fd9\u4e2a\u5f02\u6b65\u95ed\u5305\u3002\u800c\u5728\u8fd9\u4e2a\u95ed\u5305\u5f53\u4e2d\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u8c03\u7528\u4efb\u610f\u5f02\u6b65\u51fd\u6570\u4e86\uff1a<\/p>\n

    Task {<\/p>\n

    \u00a0\u00a0\u00a0 let result = await helloAsync()<\/p>\n

    \u00a0\u00a0\u00a0 print(result)<\/p>\n

    }<\/p>\n

    \u9664\u4e86\u76f4\u63a5\u6784\u9020 Task \u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u8c03\u7528 Task \u7684 detach \u51fd\u6570\u6765\u521b\u5efa\u4e00\u4e2a\u4e0d\u4e00\u6837\u7684 Task\uff1a<\/p>\n

    Task.detached (operation: {<\/p>\n

    \u00a0\u00a0\u00a0 await helloAsync()<\/p>\n

    })<\/p>\n

    \u8fd9\u4e2a\u51fd\u6570\u8fd4\u56de\u7684\u4e5f\u662f\u4e00\u4e2a Task \u5b9e\u4f8b\uff0c\u6211\u4eec\u4e0d\u59a8\u770b\u4e00\u4e0b\u5b83\u7684\u5b9a\u4e49\uff1a<\/p>\n

    public static func detached(<\/p>\n

    \u00a0\u00a0\u00a0 priority: _Concurrency.TaskPriority? = nil,<\/p>\n

    \u00a0\u00a0\u00a0 operation: @escaping @Sendable () async -> Success<\/p>\n

    ) -> _Concurrency.Task<Success, Failure><\/p>\n

    public static func detached(<\/p>\n

    \u00a0\u00a0\u00a0 priority: _Concurrency.TaskPriority? = nil,<\/p>\n

    \u00a0\u00a0\u00a0 operation: @escaping @Sendable () async throws -> Success<\/p>\n

    ) -> _Concurrency.Task<Success, Failure><\/p>\n

    \u6ce8\u610f\u5230\u5b83\u5176\u5b9e\u662f Task \u7684\u9759\u6001\u51fd\u6570\uff0c\u8fd4\u56de\u503c\u6b63\u662f Task \u7c7b\u578b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u7b80\u5355\u6765\u8bf4\u5c31\u662f\uff0cSwift\u534f\u7a0b\u662f\u4e00\u79cd\u975e\u62a2\u5360\u5f0f\u6216\u8005\u8bf4\u534f\u4f5c\u5f0f\u7684\u8ba1\u7b97\u673a\u7a0b\u5e8f\u5e76\u53d1\u8c03\u5ea6\u7684\u5b9e\u73b0\uff0c\u7a0b\u5e8f\u53ef\u4ee5\u4e3b\u52a8\u6302\u8d77\u6216\u8005\u6062\u590d\u6267\u884c […]","protected":false},"author":1,"featured_media":29978,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/29977"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=29977"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/29977\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/29978"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=29977"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=29977"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=29977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}