When using ShareLink together with SharePreview in SwiftUI, why are some actions missing from the share sheet?

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There could be several reasons why some actions are missing from the share sheet when using ShareLink together with SharePreview in SwiftUI:

1. Limited Actions: The share sheet only displays actions that are supported by the device and the app you are currently using. Some actions may not be applicable or available for certain apps or devices. For example, if you are using an older device or an app that doesn't support a particular action, then that action won't be displayed in the share sheet.

2. Missing Framework: Some actions require specific frameworks to be installed on the device in order to work. If the required framework is not installed, then the action won't be displayed in the share sheet. For example, if you are trying to share a file through AirDrop but the AirDrop framework is missing, then the AirDrop action won't be displayed in the share sheet.

3. Permission Restrictions: Certain actions may require user permission or access to specific features on the device. If the required permission or feature is not granted, then the action won't be displayed in the share sheet. For example, if you are trying to share a file from a restricted folder but don't have the required permission, then the action won't be displayed in the share sheet.

4. Coding Error: If you are developing your own app and using ShareLink and SharePreview in SwiftUI, then there may be coding errors or logic issues that prevent some actions from being displayed in the share sheet. You may need to debug your code to identify and fix the issue.