Widget Data Interaction
The ArkTS widget framework provides the updateForm() and requestForm() APIs to proactively trigger widget updates. You can use LocalStorageProp to check the widget data to be updated.
| API | System Capability | Constraints |
|---|---|---|
| updateForm | No | 1. Invoked by the widget provider. 2. Allows only the widget provider to update its own widgets. |
| requestForm | Yes | 1. Invoked by the widget host. 2. Allows only the widget host to update the widgets added to it. |
The following are the typical use cases of widget updates:
- Configuring a Widget to Update Periodically
- Updating Widget Content Through a Proxy
- Updating Local and Online Images
- Updating Widget Content by State
- Updating Widget Content by Widget Host (for System Applications Only)
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