Previews are useful so you can iterate on a view, without building the whole app over and over again. You can create different previews for each view, with different states.
Previews weren't working. What I found to fix it was to add ResTests and ResUITests folders and files, and then adding those to the target > (resTests / resUITests) > Build Phases > Compiled sources.
The resTests and resUITests files are the default generated files that are created with a new xcode project. Not sure if there was a reason, but ours didn't have that.
For new views, you can add a macro at the bottom like this to create a preview
Previews are useful so you can iterate on a view, without building the whole app over and over again. You can create different previews for each view, with different states.
Previews weren't working. What I found to fix it was to add ResTests and ResUITests folders and files, and then adding those to the target > (resTests / resUITests) > Build Phases > Compiled sources.
The resTests and resUITests files are the default generated files that are created with a new xcode project. Not sure if there was a reason, but ours didn't have that.
For new views, you can add a macro at the bottom like this to create a preview
If previews still aren't working, build the project, or file > packages > resolve package versions (or build packages), then build the project.