harmony 鸿蒙@ohos.promptAction (Prompt)

  • 2022-12-05
  • 浏览 (927)

@ohos.promptAction (Prompt)

The PromptAction module provides APIs for creating and showing toasts, dialog boxes, and action menus.

NOTE

The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.

This module cannot be used in the file declaration of the UIAbility. In other words, the APIs of this module can be used only after a component instance is created; they cannot be called in the lifecycle of the UIAbility.

The functionality of this module depends on UI context. This means that the APIs of this module cannot be used where the UI context is unclear. For details, see UIContext.

Since API version 10, you can use the getPromptAction API in UIContext to obtain the PromptAction object associated with the current UI context.

Modules to Import

import promptAction from '@ohos.promptAction';

promptAction.showToast

showToast(options: ShowToastOptions): void

Shows a toast.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
options 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 promptAction from '@ohos.promptAction'
import { BusinessError } from '@ohos.base';
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}`);
};

en-us_image_0001

ShowToastOptions

Describes the options for showing the toast.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
message string|Resource9+ Yes Text to display.
NOTE
The default font is ‘Harmony Sans’. Other fonts are not supported.
duration number No Duration that the toast will remain on the screen. The default value is 1500 ms. The value range is 1500 ms to 10000 ms. If a value less than 1500 ms is set, the default value is used. If the value greater than 10000 ms is set, the upper limit 10000 ms is used.
bottom string|number No Distance between the toast border and the bottom of the screen.
Default value: 80vp
showMode11+ ToastShowMode No Whether to show the toast above the application.
Default value: ToastShowMode.DEFAULT, which means to show the toast within the application

ToastShowMode11+

Describes the mode in which the toast is shown.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Value Description
DEFAULT 0 The toast is shown within the application.
TOP_MOST 1 The toast is shown above the application.

promptAction.showDialog

showDialog(options: ShowDialogOptions): Promise<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 ShowDialogOptions Yes Dialog box options.

Return value

Type Description
Promise<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 promptAction from '@ohos.promptAction'
import { BusinessError } from '@ohos.base';
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}`);
};

en-us_image_0002

promptAction.showDialog

showDialog(options: ShowDialogOptions, callback: AsyncCallback<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 ShowDialogOptions Yes Dialog box options.
callback AsyncCallback<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 promptAction from '@ohos.promptAction';
import { BusinessError } from '@ohos.base';
try {
  promptAction.showDialog({
    title: 'showDialog Title Info',
    message: 'Message Info',
    buttons: [
      {
        text: 'button1',
        color: '#000000'
      },
      {
        text: 'button2',
        color: '#000000'
      }
    ]
  }, (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}`);
};

en-us_image_0002

ShowDialogOptions

Describes the options for showing the dialog box.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
title string|Resource9+ No Title of the dialog box.
message string|Resource9+ No Text body.
buttons Array<Button> No Array of buttons in the dialog box. The array structure is {text:‘button’, color: ‘#666666’}. More than one button is supported.
alignment10+ DialogAlignment No Alignment mode of the dialog box in the vertical direction.
Default value: DialogAlignment.Default
offset10+ Offset No Offset of the dialog box based on the alignment settings.
Default value: { dx: 0 , dy: 0 }
maskRect10+ Rectangle No Mask area of the dialog box. Events outside the mask area are transparently transmitted, and events within the mask area are not.
Default value: { x: 0, y: 0, width: ‘100%’, height: ‘100%’ }

ShowDialogSuccessResponse

Describes the dialog box response result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
index number No Index of the selected button in the buttons array.

promptAction.showActionMenu

showActionMenu(options: ActionMenuOptions, callback: AsyncCallback<ActionMenuSuccessResponse>):void

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

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
options ActionMenuOptions Yes Action menu options.
callback AsyncCallback<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 promptAction from '@ohos.promptAction';
import { BusinessError } from '@ohos.base';
try {
  promptAction.showActionMenu({
    title: 'Title Info',
    buttons: [
      {
        text: 'item1',
        color: '#666666'
      },
      {
        text: 'item2',
        color: '#000000'
      },
    ]
  }, (err, data) => {
    if (err) {
      console.info('showActionMenu err: ' + err);
      return;
    }
    console.info('showActionMenu success callback, click button: ' + 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}`);
};

en-us_image_0005

promptAction.showActionMenu

showActionMenu(options: ActionMenuOptions): Promise<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 ActionMenuOptions Yes Action menu options.

Return value

Type Description
Promise<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 promptAction from '@ohos.promptAction';
import { BusinessError } from '@ohos.base';
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}`);
};

en-us_image_0005

ActionMenuOptions

Describes the options for showing the action menu.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
title string|Resource9+ No Title of the dialog box.
buttons [Button,Button?,Button?,Button?,Button?,Button?] Yes Array of menu item buttons. The array structure is {text:‘button’, color: ‘#666666’}. Up to six buttons are supported. If there are more than six buttons, only the first six buttons will be displayed.

ActionMenuSuccessResponse

Describes the action menu response result.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
index number No Index of the selected button in the buttons array, starting from 0.

Button

Describes the menu item button in the action menu.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
text string|Resource9+ Yes Button text.
color string|Resource9+ Yes Text color of the button.

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