When camera or photo library access was denied, the buttons should be disabled

[tclaus]

(At least on iOS), after installing the app and first create a new post, when accessing the camera or the photo library a message opens and asks for permission to get access to these personal data.

If this permission is denied by the user, the buttons are still unchanged, another click on one of this button does - nothing.

The camera and library buttons should be in disabled state, when the app has no permission for these functions, so the user sees that these functions are disabled by a reason.

[jhass]

Another option could be to show a dialog on click then, instructing the user to grant the permissions within the application settings.

[tclaus]

Another option could be to show a dialog on click then, instructing the user to grant the permissions within the application settings.

Thats even better!