{"id":7529,"date":"2025-06-03T14:22:05","date_gmt":"2025-06-05T06:39:05","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=7529"},"modified":"2025-06-05T14:22:05","modified_gmt":"2025-06-05T06:39:05","slug":"https-badgameshow-com-steven-427","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/https-badgameshow-com-steven-427\/","title":{"rendered":"Swift \u81ea\u52d5\u8f38\u5165\u9810\u8a2d\u6587\u5b57\u7684\u6700\u4f73\u5be6\u8e10\uff1aUITextField Placeholder \u5b8c\u5168\u6307\u5357\uff082025 \u66f4\u65b0\uff09"},"content":{"rendered":"

“`html
\n<\/p>\n

\u4ec0\u9ebc\u662f UITextField Placeholder\uff1f<\/h2>\n

\u5728 iOS \u548c macOS \u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0cUITextField \u662f\u4e00\u7a2e\u5e38\u7528\u7684\u7528\u6236\u8f38\u5165\u4ecb\u9762\u5143\u4ef6\u3002UITextField Placeholder \u662f Swift \u4e2d\u7684\u4e00\u500b\u529f\u80fd\uff0c\u5141\u8a31\u958b\u767c\u8005\u5728 UITextField \u4e2d\u986f\u793a\u9810\u8a2d\u6587\u5b57\uff0c\u7576\u4f7f\u7528\u8005\u672a\u8f38\u5165\u4efb\u4f55\u5167\u5bb9\u6642\uff0c\u9019\u4e9b\u63d0\u793a\u6027\u6587\u5b57\u53ef\u4ee5\u6307\u5f15\u4f7f\u7528\u8005\u8a72\u8f38\u5165\u4ec0\u9ebc\u3002\u9019\u6a23\u4e0d\u50c5\u63d0\u5347\u4e86\u4f7f\u7528\u8005\u9ad4\u9a57\uff0c\u9084\u80fd\u6e1b\u5c11\u4f7f\u7528\u8005\u7684\u56f0\u60d1\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528 UITextField Placeholder\uff1f<\/h2>\n

\u4f7f\u7528 UITextField Placeholder \u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u5728 Swift \u4e2d\u914d\u7f6e\u4ee5\u4e0b\u7a0b\u5f0f\u78bc\uff1a<\/p>\n

let textField = UITextField()\ntextField.placeholder = \"\u8acb\u8f38\u5165\u6587\u5b57\"\n<\/code><\/pre>\n
\u4e0a\u8ff0\u7a0b\u5f0f\u78bc\u793a\u7bc4\u4e86\u5982\u4f55\u5728 UITextField \u4e2d\u8a2d\u7f6e\u9810\u8a2d\u63d0\u793a\u6587\u5b57\u3002\u9019\u6a23\u4e00\u4f86\uff0c\u7576 UITextField \u70ba\u7a7a\u6642\uff0c\u4f7f\u7528\u8005\u5c07\u770b\u5230 “\u8acb\u8f38\u5165\u6587\u5b57” \u7684\u63d0\u793a\u3002<\/p>\n
\u9032\u968e\u8a2d\u5b9a\uff1a\u81ea\u5b9a\u7fa9 UITextField Placeholder \u6a23\u5f0f<\/h2>\n
\u9664\u4e86\u57fa\u672c\u7684\u9810\u8a2d\u6587\u5b57\u8a2d\u5b9a\uff0c\u6211\u5011\u9084\u53ef\u4ee5\u81ea\u5b9a\u7fa9 UITextField \u7684 Placeholder \u6a23\u5f0f\uff0c\u4f8b\u5982\u6587\u5b57\u984f\u8272\u3001\u5b57\u9ad4\u7b49\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u6539\u8b8a Placeholder \u6587\u5b57\u984f\u8272\u7684\u7bc4\u4f8b\uff1a<\/p>\n
let textField = UITextField()\ntextField.attributedPlaceholder = NSAttributedString(string: \"\u8acb\u8f38\u5165\u6587\u5b57\", attributes: [NSAttributedString.Key.foregroundColor: UIColor.lightGray])\n<\/code><\/pre>\n
\u9019\u6a23\u6211\u5011\u5c31\u53ef\u4ee5\u8a2d\u7f6e\u66f4\u5177\u5438\u5f15\u529b\u7684 Placeholder\uff0c\u63d0\u5347 UI \u7684\u6574\u9ad4\u7f8e\u89c0\u3002<\/p>\n
\u932f\u8aa4\u6392\u9664\uff1a\u5e38\u898b\u554f\u984c\u53ca\u89e3\u6c7a\u65b9\u6848<\/h2>\n
    \n
  • Placeholder \u4e0d\u986f\u793a\uff1a<\/strong>\u78ba\u4fdd UITextField \u7684 frame \u5df2\u6b63\u78ba\u8a2d\u7f6e\uff0c\u4e26\u4e14\u672a\u88ab\u5176\u4ed6\u8996\u5716\u906e\u64cb\u3002<\/li>\n
  • Placeholder \u6587\u5b57\u984f\u8272\u4e0d\u6b63\u78ba\uff1a<\/strong>\u6aa2\u67e5\u662f\u5426\u6b63\u78ba\u4f7f\u7528\u4e86 NSAttributedString \u4f86\u8a2d\u7f6e\u984f\u8272\u3002<\/li>\n<\/ul>\n
    \u5ef6\u4f38\u61c9\u7528<\/h2>\n
    UITextField Placeholder \u7684\u61c9\u7528\u4e0d\u50c5\u9650\u65bc\u6587\u5b57\u63d0\u793a\uff0c\u9084\u53ef\u4ee5\u7528\u65bc\u8868\u55ae\u9a57\u8b49\u3002\u4f8b\u5982\uff0c\u7576\u7528\u6236\u8f38\u5165\u932f\u8aa4\u6642\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 placeholder \u63d0\u793a\u7528\u6236\u4fee\u6b63\u8f38\u5165\u3002\u540c\u6642\uff0c\u7d50\u5408 UITextFieldDelegate \u7684\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u5be6\u73fe\u5373\u6642\u7684\u8f38\u5165\u6aa2\u67e5\u3002<\/p>\n
    \u7d50\u8ad6<\/h2>\n
    UITextField Placeholder \u662f Swift \u4e2d\u4e00\u500b\u7c21\u55ae\u537b\u5f37\u5927\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u5347\u60a8\u61c9\u7528\u7a0b\u5f0f\u7684\u4f7f\u7528\u8005\u9ad4\u9a57\u3002\u901a\u904e\u7c21\u55ae\u7684\u7a0b\u5f0f\u78bc\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u5f15\u5c0e\u7528\u6236\uff0c\u4e26\u4e14\u9084\u53ef\u4ee5\u9032\u4e00\u6b65\u81ea\u5b9a\u7fa9\u6a23\u5f0f\u4ee5\u7b26\u5408\u61c9\u7528\u7a0b\u5f0f\u7684\u8a2d\u8a08\u9700\u6c42\u3002<\/p>\n
    \"Swift<\/p>\n
    Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n
    1. UITextField Placeholder \u53ef\u4ee5\u96b1\u85cf\u55ce\uff1f<\/h3>\n
    \u53ef\u4ee5\uff0c\u7576 UITextField \u6709\u5167\u5bb9\u6642\uff0cPlaceholder \u6703\u81ea\u52d5\u96b1\u85cf\u3002<\/p>\n
    2. \u5982\u4f55\u6539\u8b8a Placeholder \u6587\u5b57\u7684\u5b57\u9ad4\u5927\u5c0f\uff1f<\/h3>\n
    \u60a8\u53ef\u4ee5\u4f7f\u7528 NSAttributedString \u8a2d\u7f6e\u5b57\u9ad4\u5927\u5c0f\uff0c\u4f8b\u5982\uff1a<\/p>\n
    let attributes = [NSAttributedString.Key.font: UIFont.systemFont(ofSize: 18)]\ntextField.attributedPlaceholder = NSAttributedString(string: \"\u8acb\u8f38\u5165\u6587\u5b57\", attributes: attributes)<\/code><\/pre>\n
    3. \u53ef\u4ee5\u70ba\u6bcf\u500b UITextField \u8a2d\u7f6e\u4e0d\u540c\u7684 Placeholder \u55ce\uff1f<\/h3>\n
    \u662f\u7684\uff0c\u60a8\u53ef\u4ee5\u70ba\u6bcf\u500b UITextField \u5206\u5225\u8a2d\u7f6e\u4e0d\u540c\u7684 Placeholder \u6587\u5b57\uff0c\u9019\u6a23\u53ef\u4ee5\u6839\u64da\u4e0d\u540c\u7684\u8f38\u5165\u9700\u6c42\u63d0\u4f9b\u9069\u7576\u7684\u63d0\u793a\u3002<\/p>\n
    “`
    \n—<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u672c\u6587\u5c07\u4ecb\u7d39Swift\u4e2dUITextFieldPlaceholder\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u8a2d\u7f6e\u6587\u5b57\u6846\u7684\u9810\u8a2d\u6587\u5b57\uff0c\u8b93\u4f7f\u7528\u8005\u53ef\u4ee5\u66f4\u5feb\u901f\u5730\u8f38\u5165\u8cc7\u6599\u3002<\/p>\n","protected":false},"author":1,"featured_media":7528,"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-7529","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-\u81ea\u52d5\u8f38\u5165\u9810\u8a2d\u6587\u5b57-UITextField-Placeholder_1675477120.714098.webp","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1Xr","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/7529","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=7529"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/7529\/revisions"}],"predecessor-version":[{"id":13322,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/7529\/revisions\/13322"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/7528"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=7529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=7529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=7529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}