@ohos.app.form.formProvider (formProvider) (System API)

The FormProvider module provides APIs related to the widget provider. You can use the APIs to update a widget, set the next refresh time for a widget, obtain widget information, and request a widget release.

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 topic describes only system APIs provided by the module. For details about its public APIs, see @ohos.app.form.formProvider (formProvider).

Modules to Import

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

requestPublishForm

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

Requests to publish a widget carrying data to the widget host (usually the home screen). This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.Form

System API: This is a system API.

Parameters

Error codes

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

Example

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

let want: Want = {
  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 {
  let param: Record<string, string> = {
    'temperature': '22c',
    'time': '22:00'
  }
  let obj: formBindingData.FormBindingData = formBindingData.createFormBindingData(param);
  formProvider.requestPublishForm(want, obj, (error: Base.BusinessError, data: string) => {
    if (error) {
      console.error(`callback error, code: ${(error as Base.BusinessError).code}, message: ${(error as Base.BusinessError).message})`);
      return;
    }
    console.log(`formProvider 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})`);
}

requestPublishForm

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

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

System capability: SystemCapability.Ability.Form

System API: This is a system API.

Parameters

Error codes

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

Example

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

let want: Want = {
  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 {
  formProvider.requestPublishForm(want, (error: Base.BusinessError, data: string) => {
    if (error) {
      console.error(`callback error, code: ${error.code}, message: ${error.message})`);
      return;
    }
    console.log(`formProvider 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})`);
}

requestPublishForm

requestPublishForm(want: Want, formBindingData?: formBindingData.FormBindingData): Promise<string>

Requests to publish a widget to the widget host (usually the home screen). This API uses a promise to return the result.

System capability: SystemCapability.Ability.Form

System API: This is a system API.

Parameters

Return value

Error codes

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

Example

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

let want: Want = {
  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 {
  formProvider.requestPublishForm(want).then((data: string) => {
    console.log(`formProvider requestPublishForm success, form ID is : ${JSON.stringify(data)}`);
  }).catch((error: Base.BusinessError) => {
    console.error(`promise error, code: ${error.code}, message: ${error.message})`);
  });
} catch (error) {
  console.error(`catch error, code: ${(error as Base.BusinessError).code}, message: ${(error as Base.BusinessError).message})`);
}

isRequestPublishFormSupported

isRequestPublishFormSupported(callback: AsyncCallback<boolean>): void

Checks whether a widget can be published to the widget host. This API uses an asynchronous callback to return the result.

System API: This is a system API.

System capability: SystemCapability.Ability.Form

Parameters

Error codes

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

Example

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

try {
  formProvider.isRequestPublishFormSupported((error: Base.BusinessError, isSupported: boolean) => {
    if (error) {
      console.error(`callback error, code: ${error.code}, message: ${error.message})`);
    } else {
      if (isSupported) {
        let want: Want = {
          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 {
          formProvider.requestPublishForm(want, (error: Base.BusinessError, data: string) => {
            if (error) {
              console.error(`callback error, code: ${error.code}, message: ${error.message})`);
              return;
            }
            console.log(`formProvider 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})`);
        }
      }
    }
  });
} catch (error) {
  console.error(`catch error, code: ${(error as Base.BusinessError).code}, message: ${(error as Base.BusinessError).message})`);
}

isRequestPublishFormSupported

isRequestPublishFormSupported(): Promise<boolean>

Checks whether a widget can be published to the widget host. This API uses a promise to return the result.

System API: This is a system API.

System capability: SystemCapability.Ability.Form

Return value

Error codes

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

Example

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

try {
  formProvider.isRequestPublishFormSupported().then((isSupported: boolean) => {
    if (isSupported) {
      let want: Want = {
        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 {
        formProvider.requestPublishForm(want).then((data: string) => {
          console.log(`formProvider requestPublishForm success, form ID is : ${JSON.stringify(data)}`);
        }).catch((error: Base.BusinessError) => {
          console.error(`promise error, code: ${error.code}, message: ${error.message})`);
        });
      } catch (error) {
        console.error(`catch error, code: ${(error as Base.BusinessError).code}, message: ${(error as Base.BusinessError).message})`);
      }
    }
  }).catch((error: Base.BusinessError) => {
    console.error(`promise error, code: ${error.code}, message: ${error.message})`);
  });
} catch (error) {
  console.error(`catch error, code: ${(error as Base.BusinessError).code}, message: ${(error as Base.BusinessError).message})`);
}