I need Power Apps to let users change a form they've already sent in. The command for the edit button on the detail screen is:
EditForm(Form1);Navigate(EditScreen1,ScreenTransition.None)
Under "Display Mode" on the button, there are:
If (DataSourceInfo([@'SharePointList], DataSourceInfo.EditPermission), DisplayMode.Edit, DisplayMode.Disabled)), then
The form goes to the edit screen but gets stuck on "Getting data" or "No data," depending on how you enter the app. The information goes to a SharePoint list. How do I fix this so that the user's submission is loaded?
Drop gallery of submitted form and then on edit button write code to get prepopulated fields. ex: MainGallery.Selected , also set items properrty of from as Edit
For details refer this video link below:
https://www.youtube.com/watch?v=m0WSYJtqMFM