1# AtomicServiceNavigation
2
3**AtomicServiceNavigation** is a component that serves as the root container of a page. By default, it includes a title bar, content area, and toolbar. The content area switches between the home page content (child components of [NavDestination](ts-basic-components-navdestination.md)) and non-home page content through routing.
4
5> **NOTE**
6>
7> This component is supported since API version 12. Updates will be marked with a superscript to indicate their earliest API version.
8
9## Modules to Import
10
11```
12import { AtomicServiceNavigation } from '@kit.ArkUI';
13```
14
15## Child Components
16
17Supported
18Since API version 10, you are advised to use [NavPathStack](ts-basic-components-navigation.md#navpathstack10) for page routing.
19## AtomicServiceNavigation
20
21```
22AtomicServiceNavigation({
23    navPathStack?: NavPathStack,
24    navigationContent: Callback<void>,
25    title?: ResourceStr,
26    titleBackgroundColor?: ResourceColor,
27    hideTitleBar?: boolean,
28    navBarWidth?: Length,
29    mode?: NavigationMode,
30    navDestinationBuilder?: NavDestinationBuilder,
31    navBarWidthRange?: [Dimension, Dimension],
32    minContentWidth?: Dimension,
33    stateChangeCallback?: Callback<boolean>,
34    modeChangeCallback?: Callback<NavigationMode>
35})
36```
37
38**Atomic service API**: This API can be used in atomic services since API version 12.
39
40**Decorator**: @Component
41
42**System capability**: SystemCapability.ArkUI.ArkUI.Full
43
44**Parameters**
45
46| Name| Type| Mandatory| Decorator|Description|
47| --------------- | ------ | ---- | ----|----------|
48| navPathStack | [NavPathStack](ts-basic-components-navigation.md#navpathstack10) | No| @State | Information about the navigation stack.|
49| navigationContent | Callback\<void\> | No| @BuilderParam | Content of the navigation container.|
50| title | [ResourceStr](ts-types.md#resourcestr) | No|@Prop | Page title.|
51| titleOptions | [TitleOptions](#titleoptions) | No| @Prop | Title bar options.|
52| hideTitleBar | boolean | No| @Prop | Whether to hide the title bar.|
53| navBarWidth | [Length](ts-types.md#length)| No| @Prop | Width of the navigation bar.<br>This attribute takes effect only when the component is split.|
54| mode| [NavigationMode](ts-basic-components-navigation.md#navigationmode9)| No| @Prop |Display mode of the navigation bar.<br>Available options are **Stack**, **Split**, and **Auto**.|
55| navDestinationBuilder | [NavDestinationBuilder](#navdestinationbuilder) | No| @BuilderParam | Builder data required for creating the [NavDestination](ts-basic-components-navdestination.md) component.|
56| navBarWidthRange | [[Dimension](ts-types.md#dimension10), [Dimension](ts-types.md#dimension10)] | No| @Prop |Minimum and maximum widths of the navigation bar (effective in dual-column mode).|
57| minContentWidth | [Dimension](ts-types.md#dimension10) | No| @Prop | Minimum width of the navigation bar content area (effective in dual-column mode).|
58| stateChangeCallback | Callback\<boolean\> | No| - | Callback invoked when the navigation bar visibility status changes.|
59| modeChangeCallback | Callback\<[NavigationMode](ts-basic-components-navigation.md#navigationmode9)\>| No| - | Callback invoked when the component is displayed for the first time or its display mode switches between single-column and dual-column.|
60
61## TitleOptions
62
63**Atomic service API**: This API can be used in atomic services since API version 12.
64
65**System capability**: SystemCapability.ArkUI.ArkUI.Full
66
67| Name| Type| Mandatory| Description|
68| --------------- | ------ | ---- | ---------- |
69| backgroundColor | [ResourceColor](ts-types.md#resourcecolor) | No| Background color of the title bar.|
70| isBlurEnabled | boolean | No| Whether the title bar is blurred.<br>Default value: **true**|
71| barStyle | [BarStyle<sup>12+</sup>](ts-basic-components-navigation.md#barstyle12)  | No| Style options of the title bar.|
72
73## NavDestinationBuilder
74
75type NavDestinationBuilder = (name: string, param?: Object) => void
76
77**Atomic service API**: This API can be used in atomic services since API version 12.
78
79**System capability**: SystemCapability.ArkUI.ArkUI.Full
80
81| Name| Type| Mandatory| Description|
82| --------------- | ------ | ---- | ---------- |
83| name | string | Yes| Name of the [NavDestination](ts-basic-components-navdestination.md) page.|
84| param | Object | Yes| Settings of the [NavDestination](ts-basic-components-navdestination.md) page.|
85
86## Example
87
88```ts
89// Index.ets
90import { AtomicServiceNavigation, NavDestinationBuilder, AtomicServiceTabs, TabBarOptions, TabBarPosition } from '@kit.ArkUI';
91
92@Entry
93@Component
94struct Index {
95  @State message: string = 'Title';
96  childNavStack: NavPathStack = new NavPathStack();
97  @Builder
98  tabContent1() {
99    Text('first page')
100      .onClick(() => {
101        this.childNavStack.pushPath({ name: 'page one' })
102      })
103  }
104
105  @Builder
106  tabContent2() {
107    Text('second page')
108  }
109
110  @Builder
111  tabContent3() {
112    Text('third page')
113  }
114
115  @Builder
116  navigationContent() {
117    AtomicServiceTabs({
118      tabContents: [
119        () => {
120          this.tabContent1()
121        },
122        () => {
123          this.tabContent2()
124        },
125        () => {
126          this.tabContent3()
127        }
128      ],
129      tabBarOptionsArray: [
130        new TabBarOptions($r('sys.media.ohos_ic_public_phone'), 'Feature 1'),
131        new TabBarOptions($r('sys.media.ohos_ic_public_location'), 'Feature 2', Color.Green, Color.Red),
132        new TabBarOptions($r('sys.media.ohos_ic_public_more'), 'Feature 3')
133      ],
134      tabBarPosition: TabBarPosition.BOTTOM,
135      barBackgroundColor: $r('sys.color.ohos_id_color_bottom_tab_bg'),
136      onTabBarClick: (index: Number) => {
137        if (index == 0) {
138          this.message = 'Feature 1';
139        } else if (index == 1) {
140          this.message = 'Feature 2';
141        } else {
142          this.message = 'Feature 3';
143        }
144      }
145    })
146  }
147
148  @Builder
149  pageMap(name: string) {
150    if (name === 'page one') {
151      PageOne()
152    } else if (name === 'page two') {
153      PageTwo()
154    }
155  }
156
157  build() {
158    Row() {
159      Column() {
160        AtomicServiceNavigation({
161          navigationContent: () => {
162            this.navigationContent()
163          },
164          title: this.message,
165          titleOptions: {
166            backgroundColor: 'rgb(61, 157, 180)',
167            isBlurEnabled: false
168          },
169          navDestinationBuilder: this.pageMap,
170          navPathStack: this.childNavStack,
171          mode: NavigationMode.Stack
172        })
173      }
174      .width('100%')
175    }
176    .height('100%')
177  }
178}
179
180@Component
181export struct PageOne {
182  pageInfo: NavPathStack = new NavPathStack();
183
184  build() {
185    NavDestination() {
186      Button('Next')
187        .onClick(() => {
188          this.pageInfo.pushPath({ name: 'page two'})
189        })
190    }
191    .title('PageOne')
192    .onReady((context: NavDestinationContext) => {
193      this.pageInfo = context.pathStack;
194    })
195  }
196}
197
198@Component
199export struct PageTwo {
200  pageInfo: NavPathStack = new NavPathStack();
201
202  build() {
203    NavDestination() {
204      Button('End')
205    }
206    .title('PageTwo')
207    .onReady((context: NavDestinationContext) => {
208      this.pageInfo = context.pathStack;
209    })
210  }
211}
212```
213
214![](figures/AtomicServiceNavigationDemo01.png)
215