harmony 鸿蒙@ohos.arkui.UIContext (UIContext)

2023-10-30
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@ohos.arkui.UIContext (UIContext)

In the stage model, a window stage or window can use the loadContent API to load pages, create a UI instance, and render page content to the associated window. Naturally, UI instances and windows are associated on a one-by-one basis. Some global UI APIs are executed in the context of certain UI instances. When calling these APIs, you must identify the UI context, and consequently UI instance, by tracing the call chain. If these APIs are called on a non-UI page or in some asynchronous callback, the current UI context may fail to be identified, resulting in API execution errors.

@ohos.window adds the getUIContext API in API version 10 for obtaining the UIContext object of a UI instance. The API provided by the UIContext object can be directly applied to the corresponding UI instance.

NOTE

The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version.

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UIContext

In the following API examples, you must first use getUIContext() in @ohos.window to obtain a UIContext instance, and then call the APIs using the obtained instance. In this document, the UIContext instance is represented by uiContext.

getFont

getFont(): Font

Obtains a Font object.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
Font	Font object.

Example

uiContext.getFont();

getComponentUtils

getComponentUtils(): ComponentUtils

Obtains the ComponentUtils object.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
ComponentUtils	ComponentUtils object.

Example

uiContext.getComponentUtils();

getUIInspector

getUIInspector(): UIInspector

Obtains the UIInspector object.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
UIInspector	UIInspector object.

Example

uiContext.getUIInspector();

getMediaQuery

getMediaQuery(): MediaQuery

Obtains a MediaQuery object.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
MediaQuery	MediaQuery object.

Example

uiContext.getMediaQuery();

getRouter

getRouter(): Router

Obtains a Router object.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
Router	Router object.

Example

uiContext.getRouter();

getPromptAction

getPromptAction(): PromptAction

Obtains a PromptAction object.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
PromptAction	PromptAction object.

Example

uiContext.getPromptAction();

animateTo

animateTo(value: AnimateParam, event: () => void): void

Applies a transition animation for state changes.

System capability: SystemCapability.ArkUI.ArkUI.Full

Since API version 9, this API is supported in ArkTS widgets.

Parameters

Name	Type	Mandatory	Description
value	AnimateParam	Yes	Animation settings.
event	() => void	Yes	Closure function that displays the dynamic effect. The system automatically inserts the transition animation if the status changes in the closure function.

Example

// xxx.ets
@Entry
@Component
struct AnimateToExample {
  @State widthSize: number = 250
  @State heightSize: number = 100
  @State rotateAngle: number = 0
  private flag: boolean = true

  build() {
    Column() {
      Button('change size')
        .width(this.widthSize)
        .height(this.heightSize)
        .margin(30)
        .onClick(() => {
          if (this.flag) {
            uiContext.animateTo({
              duration: 2000,
              curve: Curve.EaseOut,
              iterations: 3,
              playMode: PlayMode.Normal,
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.widthSize = 150
              this.heightSize = 60
            })
          } else {
            uiContext.animateTo({}, () => {
              this.widthSize = 250
              this.heightSize = 100
            })
          }
          this.flag = !this.flag
        })
      Button('change rotate angle')
        .margin(50)
        .rotate({ x: 0, y: 0, z: 1, angle: this.rotateAngle })
        .onClick(() => {
          uiContext.animateTo({
            duration: 1200,
            curve: Curve.Friction,
            delay: 500,
            iterations: -1, // The value -1 indicates that the animation is played for an unlimited number of times.
            playMode: PlayMode.Alternate,
            onFinish: () => {
              console.info('play end')
            }
          }, () => {
            this.rotateAngle = 90
          })
        })
    }.width('100%').margin({ top: 5 })
  }
}

showAlertDialog

showAlertDialog(options: AlertDialogParamWithConfirm|AlertDialogParamWithButtons|AlertDialogParamWithOptions): void

Shows an alert dialog box.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	AlertDialogParamWithConfirm \|AlertDialogParamWithButtons \|AlertDialogParamWithOptions	Yes	Defines and displays the <AlertDialog> component.

Example

uiContext.showAlertDialog(
  {
    title: 'title',
    message: 'text',
    autoCancel: true,
    alignment: DialogAlignment.Bottom,
    offset: { dx: 0, dy: -20 },
    gridCount: 3,
    confirm: {
      value: 'button',
      action: () => {
        console.info('Button-clicking callback')
      }
    },
    cancel: () => {
      console.info('Closed callbacks')
    }
  }
)

showActionSheet

showActionSheet(value: ActionSheetOptions): void

Defines and shows the action sheet.

System capability: SystemCapability.ArkUI.ArkUI.Full

ActionSheetOptions parameters

Name	Type	Mandatory	Description
title	Resource \|string	Yes	Title of the dialog box.
message	Resource \|string	Yes	Content of the dialog box.
autoCancel	boolean	No	Whether to close the dialog box when the overlay is clicked. Default value: true
confirm	{ value: ResourceStr, action: () => void }	No	Text content of the confirm button and callback upon button clicking. Default value: value: button text. action: callback upon button clicking.
cancel	() => void	No	Callback invoked when the dialog box is closed after the overlay is clicked.
alignment	DialogAlignment	No	Alignment mode of the dialog box in the vertical direction. Default value: DialogAlignment.Bottom
offset	{ dx: Length, dy: Length }	No	Offset of the dialog box relative to the alignment position.{ dx: 0, dy: 0 }
sheets	Array<SheetInfo>	Yes	Options in the dialog box. Each option supports the image, text, and callback.

SheetInfo parameters

Name	Type	Mandatory	Description
title	ResourceStr	Yes	Text of the option.
icon	ResourceStr	No	Sheet icon. By default, no icon is displayed.
action	()=>void	Yes	Callback when the sheet is selected.

Example

uiContext.showActionSheet({
  title: 'ActionSheet title',
  message: 'message',
  autoCancel: true,
  confirm: {
    value: 'Confirm button',
    action: () => {
      console.log('Get Alert Dialog handled')
    }
  },
  cancel: () => {
    console.log('actionSheet canceled')
  },
  alignment: DialogAlignment.Bottom,
  offset: { dx: 0, dy: -10 },
  sheets: [
    {
      title: 'apples',
      action: () => {
        console.log('apples')
      }
    },
    {
      title: 'bananas',
      action: () => {
        console.log('bananas')
      }
    },
    {
      title: 'pears',
      action: () => {
        console.log('pears')
      }
    }
  ]
})

showDatePickerDialog

showDatePickerDialog(options: DatePickerDialogOptions): void

Shows a date picker dialog box.

System capability: SystemCapability.ArkUI.ArkUI.Full

DatePickerDialogOptions parameters

Name	Type	Mandatory	Description
start	Date	No	Start date of the picker. Default value: Date(‘1970-1-1’)
end	Date	No	End date of the picker. Default value: Date(‘2100-12-31’)
selected	Date	No	Selected date. Default value: current system date
lunar	boolean	No	Whether to display the lunar calendar. Default value: false
showTime	boolean	No	Whether to display the time item. Default value: false
useMilitaryTime	boolean	No	Whether to display time in 24-hour format. Default value: false
disappearTextStyle	PickerTextStyle	No	Font color, font size, and font width for the top and bottom items.
textStyle	PickerTextStyle	No	Font color, font size, and font width of all items except the top, bottom, and selected items.
selectedTextStyle	PickerTextStyle	No	Font color, font size, and font width of the selected item.
onAccept	(value: DatePickerResult) => void	No	Callback invoked when the OK button in the dialog box is clicked.
onCancel	() => void	No	Callback invoked when the Cancel button in the dialog box is clicked.
onChange	(value: DatePickerResult) => void	No	Callback invoked when the selected item in the picker changes.

Example

let selectedDate: Date = new Date("2010-1-1")
uiContext.showDatePickerDialog({
  start: new Date("2000-1-1"),
  end: new Date("2100-12-31"),
  selected: selectedDate,
  onAccept: (value: DatePickerResult) => {
    // Use the setFullYear method to set the date when the OK button is touched. In this way, when the date picker dialog box is displayed again, the selected date is the date last confirmed.
    selectedDate.setFullYear(Number(value.year), Number(value.month), Number(value.day))
    console.info("DatePickerDialog:onAccept()" + JSON.stringify(value))
  },
  onCancel: () => {
    console.info("DatePickerDialog:onCancel()")
  },
  onChange: (value: DatePickerResult) => {
    console.info("DatePickerDialog:onChange()" + JSON.stringify(value))
  }
})

showTimePickerDialog

showTimePickerDialog(options: TimePickerDialogOptions): void

Shows a time picker dialog box.

System capability: SystemCapability.ArkUI.ArkUI.Full

TimePickerDialogOptions parameters

Name	Type	Mandatory	Description
selected	Date	No	Selected time. Default value: current system time
useMilitaryTime	boolean	No	Whether to display time in 24-hour format. The 12-hour format is used by default. Default value: false
disappearTextStyle	PickerTextStyle	No	Font color, font size, and font width for the top and bottom items.
textStyle	PickerTextStyle	No	Font color, font size, and font width of all items except the top, bottom, and selected items.
selectedTextStyle	PickerTextStyle	No	Font color, font size, and font width of the selected item.
onAccept	(value: TimePickerResult) => void	No	Callback invoked when the OK button in the dialog box is clicked.
onCancel	() => void	No	Callback invoked when the Cancel button in the dialog box is clicked.
onChange	(value: TimePickerResult) => void	No	Callback invoked when the selected time changes.

Example

class sethours{
  selectTime: Date = new Date('2020-12-25T08:30:00')
  hours(h:number,m:number){
    this.selectTime.setHours(h,m)
  }
}
uiContext.showTimePickerDialog({
  selected: this.selectTime,
  onAccept: (value: TimePickerResult) => {
    // Set selectTime to the time when the OK button is clicked. In this way, when the dialog box is displayed again, the selected time is the time when the operation was confirmed last time.
    let time = new sethours()
    if(value.hour&&value.minute){
      time.hours(value.hour, value.minute)
    }
    console.info("TimePickerDialog:onAccept()" + JSON.stringify(value))
  },
  onCancel: () => {
    console.info("TimePickerDialog:onCancel()")
  },
  onChange: (value: TimePickerResult) => {
    console.info("TimePickerDialog:onChange()" + JSON.stringify(value))
  }
})

showTextPickerDialog

showTextPickerDialog(options: TextPickerDialogOptions): void

Shows a text picker in the given settings.

System capability: SystemCapability.ArkUI.ArkUI.Full

TextPickerDialogOptions parameters

Name	Type	Mandatory	Description
range	string[] \|Resource\|TextPickerRangeContent[]	Yes	Data selection range of the picker. This parameter cannot be set to an empty array. If set to an empty array, it will not be displayed.
selected	number	No	Index of the selected item. Default value: 0
value	string	No	Text of the selected item. This parameter does not take effect when the selected parameter is set. If the value is not within the range, the first item in the range is used instead.
defaultPickerItemHeight	number \|string	No	Height of the picker item.
disappearTextStyle	PickerTextStyle	No	Font color, font size, and font width for the top and bottom items.
textStyle	PickerTextStyle	No	Font color, font size, and font width of all items except the top, bottom, and selected items.
selectedTextStyle	PickerTextStyle	No	Font color, font size, and font width of the selected item.
onAccept	(value: TextPickerResult) => void	No	Callback invoked when the OK button in the dialog box is clicked.
onCancel	() => void	No	Callback invoked when the Cancel button in the dialog box is clicked.
onChange	(value: TextPickerResult) => void	No	Callback invoked when the selected item changes.

Example

{ class setvalue{
  select: number = 2
  set(val:number){
    this.select = val
  }
}
class setvaluearr{
  select: number[] = []
  set(val:number[]){
    this.select = val
  }
}
let fruits: string[] = ['apple1', 'orange2', 'peach3', 'grape4', 'banana5']
uiContext.showTextPickerDialog({
  range: this.fruits,
  selected: this.select,
  onAccept: (value: TextPickerResult) => {
    // Set select to the index of the item selected when the OK button is touched. In this way, when the text picker dialog box is displayed again, the selected item is the one last confirmed.
    let setv = new setvalue()
    let setvarr = new setvaluearr()
    if(value.index){
      value.index instanceof Array?setvarr.set(value.index) : setv.set(value.index)
    }
    console.info("TextPickerDialog:onAccept()" + JSON.stringify(value))
  },
  onCancel: () => {
    console.info("TextPickerDialog:onCancel()")
  },
  onChange: (value: TextPickerResult) => {
    console.info("TextPickerDialog:onChange()" + JSON.stringify(value))
  }
})

createAnimator

createAnimator(options: AnimatorOptions): AnimatorResult

Creates an Animator object.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	AnimatorOptions	Yes	Animator options.

Return value

Type	Description
AnimatorResult	Animator result.

Example

import { AnimatorOptions } from '@ohos.animator';
let options:AnimatorOptions = {
  duration: 1500,
  easing: "friction",
  delay: 0,
  fill: "forwards",
  direction: "normal",
  iterations: 3,
  begin: 200.0,
  end: 400.0
};
uiContext.createAnimator(options);

runScopedTask

runScopedTask(callback: () => void): void

Executes the specified callback in this UI context.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
callback	() => void	Yes	Callback used to return the result.

Example

uiContext.runScopedTask(
  () => {
    console.log('Succeeded in runScopedTask');
  }
);

Font

In the following API examples, you must first use getFont() in UIContext to obtain a Font instance, and then call the APIs using the obtained instance.

registerFont

registerFont(options: font.FontOptions): void

Registers a custom font with the font manager.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	font.FontOptions	Yes	Information about the custom font to register.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
let font:Font = uiContext.getFont();
font.registerFont({
  familyName: 'medium',
  familySrc: '/font/medium.ttf'
});

getStstemFontList

getSystemFontList(): Array<string>

Obtains the list of supported fonts.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
Array<string>	List of supported fonts.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
let font:Font|undefined = uiContext.getFont();
if(font){
  font.getSystemFontList()
}

getFontByName

getFontByName(fontName: string): font.FontInfo

Obtains information about a system font based on the font name.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
fontName	string	Yes	System font name.

Return value

Type	Description
FontInfo	Information about the system font.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
let font:Font|undefined = uiContext.getFont();
if(font){
  font.getFontByName('Sans Italic')
}

ComponentUtils

In the following API examples, you must first use getComponentUtils() in UIContext to obtain a ComponentUtils instance, and then call the APIs using the obtained instance.

getRectangleById

getRectangleById(id: string): componentUtils.ComponentInfo

Obtains the size, position, translation, scaling, rotation, and affine matrix information of the specified component.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
id	string	Yes	Unique component ID.

Return value

Type	Description
ComponentInfo	Size, position, translation, scaling, rotation, and affine matrix information of the component.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
let componentUtils:ComponentUtils = uiContext.getComponentUtils();
let modePosition = componentUtils.getRectangleById("onClick");
let localOffsetWidth = modePosition.size.width;
let localOffsetHeight = modePosition.size.height;

UIInspector

In the following API examples, you must first use getUIInspector() in UIContext to obtain a UIInspector instance, and then call the APIs using the obtained instance.

createComponentObserver

createComponentObserver(id: string): inspector.ComponentObserver

Creates an observer for the specified component.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
id	string	Yes	Component ID.

Return value

Type	Description
ComponentObserver	Component observer, which is used to register and unregister listeners for completion of component layout or drawing.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
let inspector:UIInspector = uiContext.getUIInspector();
let listener = inspector.createComponentObserver('COMPONENT_ID');

MediaQuery

In the following API examples, you must first use getMediaQuery() in UIContext to obtain a MediaQuery instance, and then call the APIs using the obtained instance.

matchMediaSync

matchMediaSync(condition: string): mediaQuery.MediaQueryListener

Sets the media query criteria and returns the corresponding listening handle.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
condition	string	Yes	Media query condition. For details, see Syntax.

Return value

Type	Description
MediaQueryListener	Listening handle to a media event, which is used to register or deregister the listening callback.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
let mediaquery: MediaQuery = uiContext.getMediaQuery();
let listener = mediaquery.matchMediaSync('(orientation: landscape)'); // Listen for landscape events.

Router

In the following API examples, you must first use getRouter() in UIContext to obtain a Router instance, and then call the APIs using the obtained instance.

pushUrl

pushUrl(options: router.RouterOptions): Promise<void>

Navigates to a specified page in the application.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.RouterOptions	Yes	Page routing parameters.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found.
100002	if the uri is not exist.
100003	if the pages are pushed too much.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router:Router = uiContext.getRouter();
try {
  router.pushUrl({
    url: 'pages/routerpage2',
    params: {
      data1: 'message',
      data2: {
        data3: [123, 456, 789]
      }
    }
  })
} catch (err) {
  let message = (err as BusinessError).message;
  let code = (err as BusinessError).code;
  console.error(`pushUrl failed, code is ${code}, message is ${message}`);
}

pushUrl

pushUrl(options: router.RouterOptions, callback: AsyncCallback<void>): void

Navigates to a specified page in the application.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.RouterOptions	Yes	Page routing parameters.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found.
100002	if the uri is not exist.
100003	if the pages are pushed too much.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router:Router = uiContext.getRouter();
router.pushUrl({
  url: 'pages/routerpage2',
  params: {
    data1: 'message',
    data2: {
      data3: [123, 456, 789]
    }
  }
}, (err: Error) => {
  if (err) {
    let message = (err as BusinessError).message;
    let code = (err as BusinessError).code;
    console.error(`pushUrl failed, code is ${code}, message is ${message}`);
    return;
  }
  console.info('pushUrl success');
})

pushUrl

pushUrl(options: router.RouterOptions, mode: router.RouterMode): Promise<void>

Navigates to a specified page in the application.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.RouterOptions	Yes	Page routing parameters.
mode	router.RouterMode	Yes	Routing mode.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found.
100002	if the uri is not exist.
100003	if the pages are pushed too much.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
import router from '@ohos.router';
let routerF:Router = uiContext.getRouter();
class routerTmp{
  Standard:router.RouterMode = router.RouterMode.Standard
}
let rtm:routerTmp = new routerTmp()
try {
  routerF.pushUrl({
    url: 'pages/routerpage2',
    params: {
      data1: 'message',
      data2: {
        data3: [123, 456, 789]
      }
    }
  }, rtm.Standard)
} catch (err) {
  let message = (err as BusinessError).message;
  let code = (err as BusinessError).code;
  console.error(`pushUrl failed, code is ${code}, message is ${message}`);
}

pushUrl

pushUrl(options: router.RouterOptions, mode: router.RouterMode, callback: AsyncCallback<void>): void

Navigates to a specified page in the application.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.RouterOptions	Yes	Page routing parameters.
mode	router.RouterMode	Yes	Routing mode.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found.
100002	if the uri is not exist.
100003	if the pages are pushed too much.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
import router from '@ohos.router';
let routerF:Router = uiContext.getRouter();
class routerTmp{
  Standard:router.RouterMode = router.RouterMode.Standard
}
let rtm:routerTmp = new routerTmp()
routerF.pushUrl({
  url: 'pages/routerpage2',
  params: {
    data1: 'message',
    data2: {
      data3: [123, 456, 789]
    }
  }
}, rtm.Standard, (err) => {
  if (err) {
    let message = (err as BusinessError).message;
    let code = (err as BusinessError).code;
    console.error(`pushUrl failed, code is ${code}, message is ${message}`);
    return;
  }
  console.info('pushUrl success');
})

replaceUrl

replaceUrl(options: router.RouterOptions): Promise<void>

Replaces the current page with another one in the application and destroys the current page.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.RouterOptions	Yes	Description of the new page.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found, only throw in standard system.
200002	if the uri is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router:Router = uiContext.getRouter();
try {
  router.replaceUrl({
    url: 'pages/detail',
    params: {
      data1: 'message'
    }
  })
} catch (err) {
  let message = (err as BusinessError).message;
  let code = (err as BusinessError).code;
  console.error(`replaceUrl failed, code is ${code}, message is ${message}`);
}

replaceUrl

replaceUrl(options: router.RouterOptions, callback: AsyncCallback<void>): void

Replaces the current page with another one in the application and destroys the current page.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.RouterOptions	Yes	Description of the new page.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found, only throw in standard system.
200002	if the uri is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router:Router = uiContext.getRouter();
router.replaceUrl({
  url: 'pages/detail',
  params: {
    data1: 'message'
  }
}, (err: Error) => {
  if (err) {
    let message = (err as BusinessError).message;
    let code = (err as BusinessError).code;
    console.error(`replaceUrl failed, code is ${code}, message is ${message}`);
    return;
  }
  console.info('replaceUrl success');
})

replaceUrl

replaceUrl(options: router.RouterOptions, mode: router.RouterMode): Promise<void>

Replaces the current page with another one in the application and destroys the current page.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.RouterOptions	Yes	Description of the new page.
mode	router.RouterMode	Yes	Routing mode.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if can not get the delegate, only throw in standard system.
200002	if the uri is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
import router from '@ohos.router';
let routerF:Router = uiContext.getRouter();
class routerTmp{
  Standard:router.RouterMode = router.RouterMode.Standard
}
let rtm:routerTmp = new routerTmp()
try {
  routerF.replaceUrl({
    url: 'pages/detail',
    params: {
      data1: 'message'
    }
  }, rtm.Standard)
} catch (err) {
  let message = (err as BusinessError).message;
  let code = (err as BusinessError).code;
  console.error(`replaceUrl failed, code is ${code}, message is ${message}`);
}

replaceUrl

replaceUrl(options: router.RouterOptions, mode: router.RouterMode, callback: AsyncCallback<void>): void

Replaces the current page with another one in the application and destroys the current page.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.RouterOptions	Yes	Description of the new page.
mode	router.RouterMode	Yes	Routing mode.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found, only throw in standard system.
200002	if the uri is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector,  MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
import router from '@ohos.router';
let routerF:Router = uiContext.getRouter();
class routerTmp{
  Standard:router.RouterMode = router.RouterMode.Standard
}
let rtm:routerTmp = new routerTmp()
routerF.replaceUrl({
  url: 'pages/detail',
  params: {
    data1: 'message'
  }
}, rtm.Standard, (err: Error) => {
  if (err) {
    let message = (err as BusinessError).message;
    let code = (err as BusinessError).code;
    console.error(`replaceUrl failed, code is ${code}, message is ${message}`);
    return;
  }
  console.info('replaceUrl success');
});

pushNamedRoute

pushNamedRoute(options: router.NamedRouterOptions): Promise<void>

Navigates to a page using the named route. This API uses a promise to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.NamedRouterOptions	Yes	Page routing parameters.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found.
100003	if the pages are pushed too much.
100004	if the named route is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router:Router = uiContext.getRouter();
try {
  router.pushNamedRoute({
    name: 'myPage',
    params: {
      data1: 'message',
      data2: {
        data3: [123, 456, 789]
      }
    }
  })
} catch (err) {
  let message = (err as BusinessError).message;
  let code = (err as BusinessError).code;
  console.error(`pushNamedRoute failed, code is ${code}, message is ${message}`);
}

pushNamedRoute

pushNamedRoute(options: router.NamedRouterOptions, callback: AsyncCallback<void>): void

Navigates to a page using the named route. This API uses a promise to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.NamedRouterOptions	Yes	Page routing parameters.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found.
100003	if the pages are pushed too much.
100004	if the named route is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router:Router = uiContext.getRouter();
router.pushNamedRoute({
  name: 'myPage',
  params: {
    data1: 'message',
    data2: {
      data3: [123, 456, 789]
    }
  }
}, (err: Error) => {
  if (err) {
    let message = (err as BusinessError).message;
    let code = (err as BusinessError).code;
    console.error(`pushNamedRoute failed, code is ${code}, message is ${message}`);
    return;
  }
  console.info('pushNamedRoute success');
})

pushNamedRoute

pushNamedRoute(options: router.NamedRouterOptions, mode: router.RouterMode): Promise<void>

Navigates to a page using the named route. This API uses a promise to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.NamedRouterOptions	Yes	Page routing parameters.
mode	router.RouterMode	Yes	Routing mode.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found.
100003	if the pages are pushed too much.
100004	if the named route is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
import router from '@ohos.router';
let routerF:Router = uiContext.getRouter();
class routerTmp{
  Standard:router.RouterMode = router.RouterMode.Standard
}
let rtm:routerTmp = new routerTmp()
try {
  routerF.pushNamedRoute({
    name: 'myPage',
    params: {
      data1: 'message',
      data2: {
        data3: [123, 456, 789]
      }
    }
  }, rtm.Standard)
} catch (err) {
  let message = (err as BusinessError).message;
  let code = (err as BusinessError).code;
  console.error(`pushNamedRoute failed, code is ${code}, message is ${message}`);
}

pushNamedRoute

pushNamedRoute(options: router.NamedRouterOptions, mode: router.RouterMode, callback: AsyncCallback<void>): void

Navigates to a page using the named route. This API uses a promise to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.NamedRouterOptions	Yes	Page routing parameters.
mode	router.RouterMode	Yes	Routing mode.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found.
100003	if the pages are pushed too much.
100004	if the named route is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
import router from '@ohos.router';
let routerF:Router = uiContext.getRouter();
class routerTmp{
  Standard:router.RouterMode = router.RouterMode.Standard
}
let rtm:routerTmp = new routerTmp()
routerF.pushNamedRoute({
  name: 'myPage',
  params: {
    data1: 'message',
    data2: {
      data3: [123, 456, 789]
    }
  }
}, rtm.Standard, (err: Error) => {
  if (err) {
    let message = (err as BusinessError).message;
    let code = (err as BusinessError).code;
    console.error(`pushNamedRoute failed, code is ${code}, message is ${message}`);
    return;
  }
  console.info('pushNamedRoute success');
})

replaceNamedRoute

replaceNamedRoute(options: router.NamedRouterOptions): Promise<void>

Replaces the current page with another one using the named route and destroys the current page. This API uses a promise to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.NamedRouterOptions	Yes	Description of the new page.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found, only throw in standard system.
100004	if the named route is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router:Router = uiContext.getRouter();
try {
  router.replaceNamedRoute({
    name: 'myPage',
    params: {
      data1: 'message'
    }
  })
} catch (err) {
  let message = (err as BusinessError).message;
  let code = (err as BusinessError).code;
  console.error(`replaceNamedRoute failed, code is ${code}, message is ${message}`);
}

replaceNamedRoute

replaceNamedRoute(options: router.NamedRouterOptions, callback: AsyncCallback<void>): void

Replaces the current page with another one using the named route and destroys the current page. This API uses a promise to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.NamedRouterOptions	Yes	Description of the new page.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found, only throw in standard system.
100004	if the named route is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router:Router = uiContext.getRouter();
router.replaceNamedRoute({
  name: 'myPage',
  params: {
    data1: 'message'
  }
}, (err: Error) => {
  if (err) {
    let message = (err as BusinessError).message;
    let code = (err as BusinessError).code;
    console.error(`replaceNamedRoute failed, code is ${code}, message is ${message}`);
    return;
  }
  console.info('replaceNamedRoute success');
})

replaceNamedRoute

replaceNamedRoute(options: router.NamedRouterOptions, mode: router.RouterMode): Promise<void>

Replaces the current page with another one using the named route and destroys the current page. This API uses a promise to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.NamedRouterOptions	Yes	Description of the new page.
mode	router.RouterMode	Yes	Routing mode.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if can not get the delegate, only throw in standard system.
100004	if the named route is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
import router from '@ohos.router';
let routerF:Router = uiContext.getRouter();
class routerTmp{
  Standard:router.RouterMode = router.RouterMode.Standard
}
let rtm:routerTmp = new routerTmp()
try {
  routerF.replaceNamedRoute({
    name: 'myPage',
    params: {
      data1: 'message'
    }
  }, rtm.Standard)
} catch (err) {
  let message = (err as BusinessError).message;
  let code = (err as BusinessError).code;
  console.error(`replaceNamedRoute failed, code is ${code}, message is ${message}`);
}

replaceNamedRoute

replaceNamedRoute(options: router.NamedRouterOptions, mode: router.RouterMode, callback: AsyncCallback<void>): void

Replaces the current page with another one using the named route and destroys the current page. This API uses a promise to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.NamedRouterOptions	Yes	Description of the new page.
mode	router.RouterMode	Yes	Routing mode.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found, only throw in standard system.
100004	if the named route is not exist.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
import router from '@ohos.router';
let routerF:Router = uiContext.getRouter();
class routerTmp{
  Standard:router.RouterMode = router.RouterMode.Standard
}
let rtm:routerTmp = new routerTmp()
routerF.replaceNamedRoute({
  name: 'myPage',
  params: {
    data1: 'message'
  }
}, rtm.Standard, (err: Error) => {
  if (err) {
    let message = (err as BusinessError).message;
    let code = (err as BusinessError).code;
    console.error(`replaceNamedRoute failed, code is ${code}, message is ${message}`);
    return;
  }
  console.info('replaceNamedRoute success');
});

back

back(options?: router.RouterOptions ): void

Returns to the previous page or a specified page.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.RouterOptions	No	Description of the page. The url parameter indicates the URL of the page to return to. If the specified page does not exist in the page stack, the application does not respond. If no URL is set, the application returns to the previous page, and the page is not rebuilt. The page in the page stack is not reclaimed. It will be reclaimed after being popped up.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router: Router = uiContext.getRouter();
router.back({url:'pages/detail'});

clear

clear(): void

Clears all historical pages in the stack and retains only the current page at the top of the stack.

System capability: SystemCapability.ArkUI.ArkUI.Full

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router: Router = uiContext.getRouter();
router.clear();

getLength

getLength(): string

Obtains the number of pages in the current stack.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
string	Number of pages in the stack. The maximum value is 32.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router: Router = uiContext.getRouter();
let size = router.getLength();        
console.log('pages stack size = ' + size);

getState

getState(): router.RouterState

Obtains state information about the current page.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
RouterState	Page routing state.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router: Router = uiContext.getRouter();
let page = router.getState();
console.log('current index = ' + page.index);
console.log('current name = ' + page.name);
console.log('current path = ' + page.path);

showAlertBeforeBackPage

showAlertBeforeBackPage(options: router.EnableAlertOptions): void

Enables the display of a confirm dialog box before returning to the previous page.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	router.EnableAlertOptions	Yes	Description of the dialog box.

Error codes

For details about the error codes, see Router Error Codes.

ID	Error Message
100001	if UI execution context not found.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router: Router = uiContext.getRouter();
try {
  router.showAlertBeforeBackPage({            
    message: 'Message Info'        
  });
} catch(error) {
  let message = (error as BusinessError).message;
  let code = (error as BusinessError).code;
  console.error(`showAlertBeforeBackPage failed, code is ${code}, message is ${message}`);
}

hideAlertBeforeBackPage

hideAlertBeforeBackPage(): void

Disables the display of a confirm dialog box before returning to the previous page.

System capability: SystemCapability.ArkUI.ArkUI.Full

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router: Router = uiContext.getRouter();
router.hideAlertBeforeBackPage();

getParams

getParams(): Object

Obtains the parameters passed from the page that initiates redirection to the current page.

System capability: SystemCapability.ArkUI.ArkUI.Full

Return value

Type	Description
object	Parameters passed from the page that initiates redirection to the current page.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let router: Router = uiContext.getRouter();
router.getParams();

PromptAction

In the following API examples, you must first use getPromptAction() in UIContext to obtain a PromptAction instance, and then call the APIs using the obtained instance.

showToast

showToast(options: promptAction.ShowToastOptions): void

Shows a toast.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	promptAction.ShowToastOptions	Yes	Toast options.

Error codes

For details about the error codes, see promptAction Error Codes.

ID	Error Message
100001	if UI execution context not found.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let promptAction: PromptAction = uiContext.getPromptAction();
try {
  promptAction.showToast({            
    message: 'Message Info',
    duration: 2000 
  });
} catch (error) {
  let message = (error as BusinessError).message;
  let code = (error as BusinessError).code;
  console.error(`showToast args error code is ${code}, message is ${message}`);
};

showDialog

showDialog(options: promptAction.ShowDialogOptions, callback: AsyncCallback<promptAction.ShowDialogSuccessResponse>): void

Shows a dialog box. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	promptAction.ShowDialogOptions	Yes	Dialog box options.
callback	AsyncCallback<promptAction.ShowDialogSuccessResponse>	Yes	Callback used to return the dialog box response result.

Error codes

For details about the error codes, see promptAction Error Codes.

ID	Error Message
100001	if UI execution context not found.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
class buttonsMoabl {
  text: string = ""
  color: string = ""
}
let promptAction: PromptAction = uiContext.getPromptAction();
try {
  promptAction.showDialog({
    title: 'showDialog Title Info',
    message: 'Message Info',
    buttons: [
      {
        text: 'button1',
        color: '#000000'
      } as buttonsMoabl,
      {
        text: 'button2',
        color: '#000000'
      } as buttonsMoabl
    ]
  }, (err, data) => {
    if (err) {
      console.info('showDialog err: ' + err);
      return;
    }
    console.info('showDialog success callback, click button: ' + data.index);
  });
} catch (error) {
  let message = (error as BusinessError).message;
  let code = (error as BusinessError).code;
  console.error(`showDialog args error code is ${code}, message is ${message}`);
};

showDialog

showDialog(options: promptAction.ShowDialogOptions): Promise<promptAction.ShowDialogSuccessResponse>

Shows a dialog box. This API uses a promise to return the result synchronously.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	promptAction.ShowDialogOptions	Yes	Dialog box options.

Return value

Type	Description
Promise<promptAction.ShowDialogSuccessResponse>	Promise used to return the dialog box response result.

Error codes

For details about the error codes, see promptAction Error Codes.

ID	Error Message
100001	if UI execution context not found.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let promptAction: PromptAction = uiContext.getPromptAction();
try {
  promptAction.showDialog({
    title: 'Title Info',
    message: 'Message Info',
    buttons: [
      {
        text: 'button1',
        color: '#000000'
      },
      {
        text: 'button2',
        color: '#000000'
      }
    ],
  })
    .then(data => {
      console.info('showDialog success, click button: ' + data.index);
    })
    .catch((err:Error) => {
      console.info('showDialog error: ' + err);
    })
} catch (error) {
  let message = (error as BusinessError).message;
  let code = (error as BusinessError).code;
  console.error(`showDialog args error code is ${code}, message is ${message}`);
};

showActionMenu

showActionMenu(options: promptAction.ActionMenuOptions, callback:promptAction.ActionMenuSuccessResponse):void

Shows an action menu. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	promptAction.ActionMenuOptions	Yes	Action menu options.
callback	promptAction.ActionMenuSuccessResponse	Yes	Callback used to return the action menu response result.

Error codes

For details about the error codes, see promptAction Error Codes.

ID	Error Message
100001	if UI execution context not found.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import promptAction from '@ohos.promptAction';
import { BusinessError } from '@ohos.base';
class buttonsMoabl {
  text: string = ""
  color: string = ""
}
class dataR{
  err:Error = new Error;
  data:promptAction.ActionMenuSuccessResponse|undefined = undefined;
}
let dataAMSR:dataR = new dataR()
let promptActionF: PromptAction = uiContext.getPromptAction();
try {
  if(dataAMSR.data){
    promptActionF.showActionMenu({
      title: 'Title Info',
      buttons: [
        {
          text: 'item1',
          color: '#666666'
        } as buttonsMoabl,
        {
          text: 'item2',
          color: '#000000'
        } as buttonsMoabl
      ]
    }, (dataAMSR.data))
    if (dataAMSR.err) {
      console.info('showActionMenu err: ' + dataAMSR.err);
    }else{
      console.info('showActionMenu success callback, click button: ' + dataAMSR.data.index);
    }
  }
} catch (error) {
  let message = (error as BusinessError).message;
  let code = (error as BusinessError).code;
  console.error(`showActionMenu args error code is ${code}, message is ${message}`);
};

showActionMenu

showActionMenu(options: promptAction.ActionMenuOptions): Promise<promptAction.ActionMenuSuccessResponse>

Shows an action menu. This API uses a promise to return the result synchronously.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name	Type	Mandatory	Description
options	promptAction.ActionMenuOptions	Yes	Action menu options.

Return value

Type	Description
Promise<promptAction.ActionMenuSuccessResponse>	Promise used to return the action menu response result.

Error codes

For details about the error codes, see promptAction Error Codes.

ID	Error Message
100001	if UI execution context not found.

Example

import { ComponentUtils, Font, PromptAction, Router, UIInspector, MediaQuery } from '@ohos.arkui.UIContext';
import { BusinessError } from '@ohos.base';
let promptAction: PromptAction = uiContext.getPromptAction();
try {
  promptAction.showActionMenu({
    title: 'showActionMenu Title Info',
    buttons: [
      {
        text: 'item1',
        color: '#666666'
      },
      {
        text: 'item2',
        color: '#000000'
      },
    ]
  })
    .then(data => {
      console.info('showActionMenu success, click button: ' + data.index);
    })
    .catch((err:Error) => {
      console.info('showActionMenu error: ' + err);
    })
} catch (error) {
  let message = (error as BusinessError).message;
  let code = (error as BusinessError).code;
  console.error(`showActionMenu args error code is ${code}, message is ${message}`);
};

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harmony 鸿蒙@ohos.arkui.UIContext (UIContext)

@ohos.arkui.UIContext (UIContext)

UIContext

getFont

getComponentUtils

getUIInspector

getMediaQuery

getRouter

getPromptAction

animateTo

showAlertDialog

showActionSheet

showDatePickerDialog

showTimePickerDialog

showTextPickerDialog

createAnimator

runScopedTask

Font

registerFont

getStstemFontList

getFontByName

ComponentUtils

getRectangleById

UIInspector

createComponentObserver

MediaQuery

matchMediaSync

Router

pushUrl

pushUrl

pushUrl

pushUrl

replaceUrl

replaceUrl

replaceUrl

replaceUrl

pushNamedRoute

pushNamedRoute

pushNamedRoute

pushNamedRoute

replaceNamedRoute

replaceNamedRoute

replaceNamedRoute

replaceNamedRoute

back

clear

getLength

getState

showAlertBeforeBackPage

hideAlertBeforeBackPage

getParams

PromptAction

showToast

showDialog

showDialog

showActionMenu

showActionMenu

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