{"id":538,"date":"2025-06-03T11:00:40","date_gmt":"2025-06-05T03:33:39","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=538"},"modified":"2025-06-05T11:00:40","modified_gmt":"2025-06-05T03:33:39","slug":"swift-%e5%8d%83%e5%88%86%e4%bd%8d-%e9%87%91%e9%8c%a2%e5%83%b9%e6%a0%bc%e9%80%97%e8%99%9f-%e5%8d%83%e5%88%86%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/swift-%e5%8d%83%e5%88%86%e4%bd%8d-%e9%87%91%e9%8c%a2%e5%83%b9%e6%a0%bc%e9%80%97%e8%99%9f-%e5%8d%83%e5%88%86%e7%ac%a6\/","title":{"rendered":"Swift 2025 \u6559\u5b78\uff1a\u5343\u5206\u4f4d\u91d1\u9322\u50f9\u683c\u683c\u5f0f\u5316\u8207\u6700\u4f73\u5be6\u8e10"},"content":{"rendered":"

“`markdown
\n# Swift 2025 \u6559\u5b78\uff1a\u5343\u5206\u4f4d\u91d1\u9322\u50f9\u683c\u683c\u5f0f\u5316\u8207\u6700\u4f73\u5be6\u8e10<\/p>\n

\u5728\u91d1\u878d\u5546\u54c1\u3001\u50f9\u683c\u548c\u50f9\u4f4d\u7b49\u6709\u95dc\u91d1\u9322\u7684\u6578\u5b57\u4e2d\uff0c\u901a\u5e38\u6703\u4f7f\u7528\u6a19\u9ede\u7b26\u865f\u5206\u9694\uff0c\u7a31\u70ba\u5343\u5206\u4f4d\u7b26\u865f\uff08\u6216\u5343\u4f4d\u5206\u9694\u7b26\uff09\uff0c\u80fd\u6709\u6548\u63d0\u9ad8\u53ef\u8b80\u6027\u3002\u4f8b\u5982\uff1a10000 \u8f49\u63db\u70ba 10,000\u3002<\/p>\n

## \u4f7f\u7528 NumberFormatter \u9032\u884c\u5343\u5206\u4f4d\u683c\u5f0f\u5316<\/p>\n

\u5728 Swift \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 `NumberFormatter` \u985e\u5225\u4f86\u683c\u5f0f\u5316\u91d1\u984d\u3002\u4ee5\u4e0b\u793a\u7bc4\u4e86\u5982\u4f55\u4f7f\u7528\u6700\u65b0\u7684\u8a9e\u6cd5\u4f86\u5be6\u73fe\u5343\u5206\u4f4d\u683c\u5f0f\u5316\u3002<\/p>\n

### \u683c\u5f0f\u5316\u6574\u6578\u91d1\u984d<\/p>\n

“`swift
\nlet money: Int = 1_000_000 \/\/ \u4e00\u767e\u842c
\nlet formatter = NumberFormatter()
\nformatter.numberStyle = .decimal
\nformatter.maximumFractionDigits = 0<\/p>\n

if let formattedMoney = formatter.string(from: NSNumber(value: money)) {
\n print(formattedMoney) \/\/ \u8f38\u51fa\uff1a1,000,000
\n}
\n“`<\/p>\n

### \u683c\u5f0f\u5316\u5e36\u5c0f\u6578\u7684\u91d1\u984d<\/p>\n

“`swift
\nlet moneyWithDecimal: Double = 1_000_000.123456 \/\/ \u4e00\u767e\u842c
\nformatter.maximumFractionDigits = 2 \/\/ \u5c0f\u6578\u9ede\u4fdd\u7559\u5169\u4f4d<\/p>\n

if let formattedMoneyWithDecimal = formatter.string(from: NSNumber(value: moneyWithDecimal)) {
\n print(formattedMoneyWithDecimal) \/\/ \u8f38\u51fa\uff1a1,000,000.12
\n}
\n“`<\/p>\n

## \u5404\u7a2e\u91d1\u9322\u6a23\u5f0f<\/p>\n

`NumberFormatter` \u652f\u63f4\u591a\u7a2e\u91d1\u9322\u6a23\u5f0f\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u793a\u7bc4\uff1a<\/p>\n

“`swift
\nformatter.numberStyle = .currency
\nprint(formatter.string(from: NSNumber(value: money))!) \/\/ \u8f38\u51fa\uff1a1,000,000<\/p>\n

formatter.numberStyle = .currencyAccounting
\nprint(formatter.string(from: NSNumber(value: money))!) \/\/ \u8f38\u51fa\uff1a<\/span>1,000,000<\/p>\n

formatter.numberStyle = .currencyISOCode
\nprint(formatter.string(from: NSNumber(value: money))!) \/\/ \u8f38\u51fa\uff1aTWD\u00a01,000,000<\/p>\n

formatter.numberStyle = .currencyPlural
\nprint(formatter.string(from: NSNumber(value: moneyWithDecimal))!) \/\/ \u8f38\u51fa\uff1a1,000,000.00\u00a0\u65b0\u53f0\u5e63
\n“`<\/p>\n

## \u652f\u63f4\u591a\u7a2e\u8a9e\u8a00\u7684\u683c\u5f0f\u5316<\/p>\n

\u60a8\u53ef\u4ee5\u900f\u904e\u8a2d\u5b9a `locale` \u4f86\u652f\u63f4\u4e0d\u540c\u8a9e\u8a00\u7684\u683c\u5f0f\u5316\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7bc4\u4f8b\uff1a<\/p>\n

“`swift
\nlet locales = [“ja_JP”, “zh_TW”, “en_MT”, “fil_PH”]\nfor localeIdentifier in locales {
\n formatter.locale = Locale(identifier: localeIdentifier)
\n formatter.numberStyle = .currency
\n if let formatted = formatter.string(from: NSNumber(value: money)) {
\n print(“\\(localeIdentifier) \u683c\u5f0f\u5316\uff1a\\(formatted)”)
\n }
\n}
\n“`<\/p>\n

## \u932f\u8aa4\u6392\u9664<\/p>\n

\u5728\u9032\u884c\u6578\u5b57\u683c\u5f0f\u5316\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u932f\u8aa4\uff0c\u4f8b\u5982\uff1a
\n– \u78ba\u4fdd\u50b3\u5165 `NSNumber` \u7269\u4ef6\u7684\u6578\u5b57\u985e\u578b\u6b63\u78ba\u3002
\n– \u6aa2\u67e5 `formatter` \u7684\u5c6c\u6027\u662f\u5426\u6b63\u78ba\u8a2d\u5b9a\u3002<\/p>\n

## \u5ef6\u4f38\u61c9\u7528<\/p>\n

`NumberFormatter` \u9084\u53ef\u4ee5\u7528\u65bc\u5176\u4ed6\u6578\u5b57\u7684\u683c\u5f0f\u5316\uff0c\u5982\u767e\u5206\u6bd4\u3001\u79d1\u5b78\u8a18\u6578\u6cd5\u7b49\u3002\u9019\u4f7f\u5f97\u5b83\u5728\u6578\u64da\u8868\u793a\u65b9\u9762\u975e\u5e38\u9748\u6d3b\u3002<\/p>\n

“`swift
\nformatter.numberStyle = .percent
\nprint(formatter.string(from: NSNumber(value: 0.1))!) \/\/ \u8f38\u51fa\uff1a10%
\n“`<\/p>\n

## \u7d50\u5c3e<\/p>\n

\u5e0c\u671b\u9019\u7bc7\u6587\u7ae0\u80fd\u5e6b\u52a9\u60a8\u4e86\u89e3\u5982\u4f55\u5728 Swift \u4e2d\u4f7f\u7528 `NumberFormatter` \u4f86\u683c\u5f0f\u5316\u91d1\u984d\u3002\u5982\u679c\u6709\u4efb\u4f55\u554f\u984c\uff0c\u8acb\u53c3\u8003\u4ee5\u4e0b\u7684\u5e38\u898b\u554f\u984c\u89e3\u7b54\u3002<\/p>\n

—<\/p>\n

## Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/p>\n

**1. \u5982\u4f55\u8abf\u6574\u5c0f\u6578\u9ede\u4f4d\u6578\uff1f**
\n\u60a8\u53ef\u4ee5\u4f7f\u7528 `maximumFractionDigits` \u5c6c\u6027\u4f86\u8a2d\u7f6e\u5c0f\u6578\u9ede\u5f8c\u7684\u4f4d\u6578\u3002<\/p>\n

**2. `NumberFormatter` \u652f\u63f4\u54ea\u4e9b\u683c\u5f0f\u5316\u6a23\u5f0f\uff1f**
\n`NumberFormatter` \u652f\u63f4\u591a\u7a2e\u683c\u5f0f\u5316\u6a23\u5f0f\uff0c\u5305\u62ec decimal\u3001currency\u3001percent \u7b49\u3002<\/p>\n

**3. \u5982\u4f55\u652f\u63f4\u4e0d\u540c\u8a9e\u8a00\u7684\u6578\u5b57\u683c\u5f0f\uff1f**
\n\u60a8\u53ef\u4ee5\u4f7f\u7528 `locale` \u5c6c\u6027\u8a2d\u7f6e\u6240\u9700\u7684\u8a9e\u8a00\u548c\u5730\u5340\uff0c`NumberFormatter` \u6703\u6839\u64da\u9019\u4e9b\u8a2d\u5b9a\u81ea\u52d5\u8abf\u6574\u683c\u5f0f\u3002
\n“`
\n—<\/p>\n","protected":false},"excerpt":{"rendered":"

“`markdown # Swift …<\/p>\n","protected":false},"author":1,"featured_media":559,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[5],"tags":[],"class_list":["post-538","post","type-post","status-publish","format-aside","has-post-thumbnail","hentry","category-swift","post_format-post-format-aside"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2020\/11\/cup-1-1.png","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-8G","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/538","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=538"}],"version-history":[{"count":12,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/538\/revisions"}],"predecessor-version":[{"id":7568,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/538\/revisions\/7568"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/559"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}