Widget Data Interaction
The ArkTS widget framework provides the updateForm() and requestForm() APIs to proactively trigger widget updates.
| API | System Capability | Constraints |
|---|---|---|
| updateForm | No | 1. Invoked by the provider. 2. Allows only the widget provider to update its own widgets. It cannot be used to update widgets by other providers. |
| requestForm | Yes | 1. Invoked by the host. 2. Allows only the widget host to update the widgets added to it. It cannot be used to update widgets added to other hosts. |
The following describes the typical use cases of widget updates: