{"id":190878,"date":"2022-01-31T14:42:27","date_gmt":"2022-01-31T06:42:27","guid":{"rendered":"https:\/\/www.idc.net\/help\/190878\/"},"modified":"2022-01-31T14:42:27","modified_gmt":"2022-01-31T06:42:27","slug":"%e5%90%8e%e6%b5%aa%e4%ba%91ios%e6%95%99%e7%a8%8b%ef%bc%9a%e4%bd%bf%e7%94%a8%e6%83%b0%e6%80%a7-stack-%e8%a7%86%e5%9b%be%e5%af%b9%e6%95%b0%e6%8d%ae%e8%bf%9b%e8%a1%8c%e5%88%86%e7%bb%84","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/190878\/","title":{"rendered":"\u540e\u6d6a\u4e91IOS\u6559\u7a0b\uff1a\u4f7f\u7528\u60f0\u6027 Stack \u89c6\u56fe\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u7ec4"},"content":{"rendered":"

\u6982\u89c8 <\/h2>\n

LazyHStack<\/code> (\u82f1\u6587) \u548c LazyVStack<\/code> (\u82f1\u6587) \u89c6\u56fe\u90fd\u53ef\u4ee5\u663e\u793a\u6574\u7406\u4e3a\u591a\u4e2a\u903b\u8f91\u90e8\u5206\u7684\u89c6\u56fe\u7ec4\uff0c\u4ece\u800c\u5206\u522b\u5c06\u5176\u5b50\u9879\u6392\u5217\u6210\u6c34\u5e73\u751f\u957f\u548c\u5782\u76f4\u751f\u957f\u7684\u76f4\u7ebf\u3002\u4e4b\u6240\u4ee5\u79f0\u8fd9\u4e9b stack \u4e3a\u201c\u60f0\u6027\u201d\uff0c\u662f\u56e0\u4e3a stack \u89c6\u56fe\u4ec5\u5728\u9700\u8981\u5728\u5c4f\u5e55\u4e0a\u6e32\u67d3\u9879\u76ee\u65f6\u624d\u4f1a\u521b\u5efa\u9879\u76ee\u3002\u4e0e stack \u89c6\u56fe\u4e00\u6837\uff0c\u60f0\u6027 stack \u4e0d\u5305\u62ec\u5bf9\u6eda\u52a8\u7684\u4efb\u4f55\u56fa\u6709\u652f\u6301\uff0c\u5e76\u4e14\u4f60\u5e94\u5c06\u60f0\u6027 stack \u89c6\u56fe\u5305\u88c5\u5728 ScrollView<\/code> (\u82f1\u6587) \u5bb9\u5668\u4e2d\u3002 <\/p>\n

\u82e5\u8981\u5bf9\u60f0\u6027 stack \u89c6\u56fe\u4e2d\u7684\u5185\u5bb9\u6216\u6570\u636e\u8fdb\u884c\u5206\u7ec4\uff0c\u8bf7\u4f7f\u7528 Section<\/code> (\u82f1\u6587) \u5b9e\u4f8b\u4f5c\u4e3a\u5df2\u5206\u7ec4\u89c6\u56fe\u96c6\u5408\u7684\u5bb9\u5668\u3002Section<\/code> (\u82f1\u6587) \u89c6\u56fe\u672c\u8eab\u6ca1\u6709\u4efb\u4f55\u76f4\u89c2\u7684\u8868\u793a\u5f62\u5f0f\uff0c\u4f46\u662f\u53ef\u4ee5\u5305\u542b\u9875\u7709\u548c\u9875\u811a\u89c6\u56fe\uff0c\u8fd9\u4e9b\u89c6\u56fe\u53ef\u968f\u7740 stack \u7684\u5185\u5bb9\u8fdb\u884c\u6eda\u52a8\uff0c\u6216\u8005\u4f60\u53ef\u4ee5\u5c06\u5b83\u4eec\u56fa\u5b9a\u5728 ScrollView<\/code> (\u82f1\u6587) \u7684\u9876\u90e8\u6216\u5e95\u90e8\u3002 <\/p>\n

\u6ce8\u91ca <\/p>\n

\u4f7f\u7528 Section<\/code> (\u82f1\u6587) \u89c6\u56fe\u53ef\u4ee5\u5728 stack \u89c6\u56fe\u6216\u60f0\u6027 grid\u3001List<\/code> (\u82f1\u6587)\u3001CommandMenu<\/code> (\u82f1\u6587)\u3001Form<\/code> (\u82f1\u6587) \u548c\u591a\u4e2a\u5176\u4ed6\u5bb9\u5668\u7c7b\u578b\u4e2d\u83b7\u5f97\u5e73\u53f0\u9002\u7528\u7684\u5206\u7ec4\u3002 <\/p>\n

\u672c\u6587\u4e2d\u7684\u4ee3\u7801\u793a\u4f8b\u6784\u5efa\u4e86\u4e00\u4e2a\u7528\u6237\u754c\u9762\u6765\u76f4\u89c2\u5730\u5448\u73b0\u4e09\u539f\u8272\u7684\u4e0d\u540c\u8272\u5ea6\u3002Stack \u4e2d\u7684\u6bcf\u4e2a\u90e8\u5206\u90fd\u4ee3\u8868\u4e00\u79cd\u539f\u8272\uff0c\u5176\u4e2d\u5305\u542b\u4e94\u4e2a\u5b50\u89c6\u56fe\uff0c\u6bcf\u4e2a\u5b50\u89c6\u56fe\u90fd\u663e\u793a\u8be5\u989c\u8272\u7684\u4e00\u4e2a\u4e0d\u540c\u53d8\u4f53\u3002 <\/p>\n<\/p>\n

\u51c6\u5907\u6570\u636e <\/h3>\n

\u4e0e stack \u4e2d\u5305\u542b\u7684\u89c6\u56fe\u4e00\u6837\uff0c\u5728\u901a\u8fc7 ForEach<\/code> (\u82f1\u6587) \u8fed\u4ee3\u65f6\uff0c\u6bcf\u4e2a Section<\/code> (\u82f1\u6587) \u90fd\u5fc5\u987b\u7ecf\u8fc7\u552f\u4e00\u6807\u8bc6\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0cColorData<\/code> \u5b9e\u4f8b\u4ee3\u8868\u5404\u4e2a\u90e8\u5206\uff0cShadeData<\/code> \u5b9e\u4f8b\u4ee3\u8868\u4e00\u4e2a\u90e8\u5206\u4e2d\u6bcf\u79cd\u989c\u8272\u7684\u8272\u5ea6\u3002ColorData<\/code> \u548c ShadeData<\/code> \u5747\u9075\u4ece Identifiable<\/code> (\u82f1\u6587) \u534f\u8bae\u3002 <\/p>\n

<\/span> struct<\/span> ColorData<\/span>: Identifiable<\/span> <\/span>{<\/span><\/span><\/span>  let<\/span> id = UUID<\/span>()<\/span><\/span><\/span>  let<\/span> name: String<\/span><\/span><\/span><\/span>  let<\/span> color: Color<\/span><\/span><\/span><\/span>  let<\/span> variations: [ShadeData<\/span>]<\/span><\/span><\/span>  <\/span><\/span><\/span>  struct<\/span> ShadeData<\/span>: Identifiable<\/span> <\/span>{<\/span><\/span><\/span>  let<\/span> id = UUID<\/span>()<\/span><\/span><\/span>  var<\/span> brightness: Double<\/span><\/span><\/span><\/span>  }<\/span><\/span><\/span>  <\/span><\/span><\/span>  init<\/span>(color: Color<\/span>, name: String<\/span>) {<\/span><\/span><\/span>  self<\/span>.name = name<\/span><\/span><\/span>  self<\/span>.color = color<\/span><\/span><\/span>  self<\/span>.variations = stride<\/span>(from: 0.0<\/span>, to: 0.5<\/span>, by: 0.1<\/span>)<\/span><\/span><\/span>  .map<\/span> { ShadeData<\/span>(brightness: $0<\/span>) }<\/span><\/span><\/span>  }<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u663e\u793a\u5e26\u9875\u7709\u548c\u9875\u811a\u7684\u90e8\u5206 <\/h3>\n
 \u4e0b\u9762\u7684 ColorSelectionView<\/code> \u4e3a\u6bcf\u4e2a\u539f\u8272\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u5305\u542b ColorData<\/code> \u5b9e\u4f8b\u7684\u6570\u7ec4\u3002LazyVStack<\/code> (\u82f1\u6587) \u8fed\u4ee3\u989c\u8272\u6570\u636e\u7684\u6570\u7ec4\u4ee5\u521b\u5efa\u5404\u4e2a\u90e8\u5206\uff0c\u7136\u540e\u8fed\u4ee3 variations<\/code> \u4ee5\u6839\u636e\u8272\u5ea6\u521b\u5efa\u89c6\u56fe\u3002 <\/p>\n
<\/span> struct<\/span> ColorSelectionView<\/span>: View<\/span> <\/span>{<\/span><\/span><\/span>  let<\/span> sections = [<\/span><\/span><\/span>  ColorData<\/span>(color: .red, name: \"Reds\"<\/span>),<\/span><\/span><\/span>  ColorData<\/span>(color: .green, name: \"Greens\"<\/span>),<\/span><\/span><\/span>  ColorData<\/span>(color: .blue, name: \"Blues\"<\/span>)<\/span><\/span><\/span>  ]<\/span><\/span><\/span>  <\/span><\/span><\/span>  var<\/span> body: some<\/span> View<\/span> {<\/span><\/span><\/span>  ScrollView<\/span> {<\/span><\/span><\/span>  LazyVStack<\/span>(spacing: 1<\/span>) {<\/span><\/span><\/span>  ForEach<\/span>(sections) { section in<\/span><\/span><\/span><\/span>  Section<\/span>(header: SectionHeaderView<\/span>(colorData: section)) {<\/span><\/span><\/span>  ForEach<\/span>(section.variations) { variation in<\/span><\/span><\/span><\/span>  section.color<\/span><\/span><\/span>  .brightness(variation.brightness)<\/span><\/span><\/span>  .frame(height: 20<\/span>)<\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u4f7f\u7528 Section<\/code> (\u82f1\u6587) \u89c6\u56fe\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u7ec4\uff0c\u5e76\u4f7f\u7528 header<\/code> \u548c footer<\/code> \u5c5e\u6027\u4f20\u5165\u9875\u7709\u6216\u9875\u811a\u89c6\u56fe\u3002\u6b64\u793a\u4f8b\u5b9e\u65bd\u4e86\u4e00\u4e2a SectionHeaderView<\/code> \u4f5c\u4e3a\u9875\u7709\u89c6\u56fe\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u534a\u900f\u660e\u7684 stack \u89c6\u56fe\u4ee5\u53ca Text<\/code> (\u82f1\u6587) \u6807\u7b7e\u4e2d\u8be5\u90e8\u5206\u989c\u8272\u7684\u540d\u79f0\u3002 <\/p>\n
<\/span> struct<\/span> SectionHeaderView<\/span>: View<\/span> <\/span>{<\/span><\/span><\/span>  var<\/span> colorData: ColorData<\/span><\/span><\/span><\/span>  <\/span><\/span><\/span>  var<\/span> body: some<\/span> View<\/span> {<\/span><\/span><\/span>  HStack<\/span> {<\/span><\/span><\/span>  Text<\/span>(colorData.name)<\/span><\/span><\/span>  .font(.headline)<\/span><\/span><\/span>  .foregroundColor(colorData.color)<\/span><\/span><\/span>  Spacer<\/span>()<\/span><\/span><\/span>  }<\/span><\/span><\/span>  .padding()<\/span><\/span><\/span>  .background(Color<\/span>.primary<\/span><\/span><\/span>  .colorInvert()<\/span><\/span><\/span>  .opacity(0.75<\/span>))<\/span><\/span><\/span>  }<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u6709\u5173\u4f7f\u7528 ForEach<\/code> (\u82f1\u6587) \u5728 stack \u4e2d\u91cd\u590d\u89c6\u56fe\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u201c\u521b\u5efa\u9ad8\u6027\u80fd\u7684\u53ef\u6eda\u52a8 Stack\u201d\u3002 <\/p>\n
 \u4f7f\u91cd\u8981\u4fe1\u606f\u4fdd\u6301\u53ef\u89c1 <\/h3>\n
 \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4e00\u4e2a\u90e8\u5206\u7684\u9875\u7709\u548c\u9875\u811a\u89c6\u56fe\u5c06\u4e0e\u8be5\u90e8\u5206\u7684\u5185\u5bb9\u540c\u6b65\u6eda\u52a8\u3002\u5982\u679c\u4f60\u60f3\u8981\u8ba9\u9875\u7709\u548c\u9875\u811a\u89c6\u56fe\u59cb\u7ec8\u4fdd\u6301\u53ef\u89c1 (\u65e0\u8bba\u76f8\u5173\u90e8\u5206\u7684\u9876\u90e8\u6216\u5e95\u90e8\u662f\u5426\u53ef\u89c1)\uff0c\u53ef\u4ee5\u4e3a\u60f0\u6027 stack \u89c6\u56fe\u7684 pinnedViews<\/code> \u5c5e\u6027\u6307\u5b9a\u4e00\u7ec4 PinnedScrollableViews<\/code> (\u82f1\u6587)\u3002 <\/p>\n
<\/span> LazyVStack<\/span>(spacing: 1<\/span>, pinnedViews: [.sectionHeaders]) {<\/span><\/span><\/span>  \/\/ ...<\/span><\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u5728 LazyVStack<\/code> (\u82f1\u6587) \u5bb9\u5668\u4e2d\uff0c\u9875\u7709\u9644\u52a0\u5230\u9876\u90e8\uff0c\u9875\u811a\u9644\u52a0\u5230\u5e95\u90e8\u3002\u5728 LazyHStack<\/code> (\u82f1\u6587) \u5bb9\u5668\u4e2d\uff0c\u9875\u7709\u9644\u52a0\u5230\u524d\u7f18\uff0c\u9875\u811a\u9644\u52a0\u5230\u540e\u7f18\u3002 <\/p>\n
 \u901a\u8fc7\u6b64\u66f4\u6539\uff0c\u5728\u7528\u6237\u5f00\u59cb\u6eda\u52a8\u65f6\uff0c\u76f8\u5173\u90e8\u5206\u7684\u9875\u7709\u4f1a\u56fa\u5b9a\u5230\u89c6\u56fe\u9876\u90e8\u3002 <\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
\u6982\u89c8 LazyHStack (\u82f1\u6587) \u548c LazyVStack (\u82f1\u6587) \u89c6\u56fe\u90fd\u53ef\u4ee5\u663e\u793a\u6574\u7406\u4e3a\u591a\u4e2a\u903b\u8f91\u90e8\u5206\u7684\u89c6 […]<\/p>\n","protected":false},"author":1,"featured_media":190879,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[189686],"tags":[],"class_list":["post-190878","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ios"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/190878","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=190878"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/190878\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media\/190879"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=190878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=190878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=190878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}