My requirement is that when I click to download a file, a new tab will open. If the file exists, it will start downloading, if not, it should close the new tab and display an error Message.
I
Tag: confirmation
Buy within iOS Applications: Confirm that you don’t need to use RestoreCompletedTransactions
When selling non-consumables through in-app purchases on iOS, the restoreCompletedTransactions method is provided so that you can retrieve all the purchases made by the user in the past, as far as