harmony(鸿蒙)FormBindingData

2022-08-09
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FormBindingData

The FormBindingData module provides APIs for widget data binding. You can use the APIs to create a FormBindingData object and obtain related information.

NOTE

The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import formBindingData from '@ohos.application.formBindingData';

Required Permissions

None

formBindingData.createFormBindingData

createFormBindingData(obj?: Object|string): FormBindingData

Creates a FormBindingData object.

System capability: SystemCapability.Ability.Form

Parameters

Name	Type	Mandatory	Description
obj	Object or string	No	Data to be displayed on the JS widget. The value can be an object containing multiple key-value pairs or a string in JSON format. The image data is identified by “formImages”, and the content is multiple key-value pairs, each of which consists of an image identifier and image file descriptor. The final format is {“formImages”: {“key1”: fd1, “key2”: fd2}}.

Return value

Type	Description
FormBindingData	FormBindingData object created based on the passed data.

Example

  import featureAbility from '@ohos.ability.featureAbility';
  import fileio from '@ohos.fileio';
  let context=featureAbility.getContext();
  context.getOrCreateLocalDir((err,data)=>{
      let path=data+"/xxx.jpg";
      let fd = fileio.openSync(path);
      let obj = {
          "temperature": "21°",
          "formImages": {"image": fd}
      };
      let formBindingDataObj = formBindingData.createFormBindingData(obj);
  })