harmony 鸿蒙@ohos.app.form.formAgent (FormAgent)

2023-10-30
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@ohos.app.form.formAgent (FormAgent)

The FormAgent module provides APIs related to the widget agent. Currently, you can use the APIs to request to publish widgets only.

NOTE The initial APIs of this module are supported since API version 11. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import formAgent from '@ohos.app.form.formAgent';

requestPublishForm

requestPublishForm(want: Want, callback: AsyncCallback<string>): void

Requests to publish a widget to the widget host. This API uses an asynchronous callback to return the result. The widget host is usually the home screen.

Required permission: ohos.permission.AGENT_REQUIRE_FORM

System capability: SystemCapability.Ability.Form

System API: This is a system API.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Request used for publishing. The following fields must be included: bundleName: bundle name of the target widget. abilityName: ability of the target widget. parameters: - ohos.extra.param.key.form_dimension: dimension of the target widget. - ohos.extra.param.key.form_name: name of the target widget. - ohos.extra.param.key.module_name: module name of the target widget.
callback	AsyncCallback<string>	Yes	Callback used to return the widget ID.

Error codes

ID	Error Message
16500050	An IPC connection error happened.
16500100	Failed to obtain the configuration information.
16501000	An internal functional error occurred.

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

Example

import Want from '@ohos.app.ability.Want';
import Base from '@ohos.base';

let want: Want = {
  bundleName: 'com.ohos.exampledemo',
  abilityName: 'FormAbility',
  parameters: {
    'ohos.extra.param.key.form_dimension': 2,
    'ohos.extra.param.key.form_name': 'widget',
    'ohos.extra.param.key.module_name': 'entry'
  }
};
try {
  formAgent.requestPublishForm(want, (error: Base.BusinessError, data: string) => {
    if (error) {
      console.error(`callback error, code: ${error.code}, message: ${error.message})`);
      return;
    }
    console.log(`formAgent requestPublishForm, form ID is: ${JSON.stringify(data)}`);
  });
} catch (error) {
  console.error(`catch error, code: ${(error as Base.BusinessError).code}, message: ${(error as Base.BusinessError).message})`);
}