3 ms·
This is correct. iOS snapshots the app as soon as it's moved into the background, and that snapshot is what you see. When you bring up the switcher, the foregro
by marcellus23 5y ago
This is correct. iOS snapshots the app as soon as it's moved into the background, and that snapshot is what you see. When you bring up the switcher, the foreground app isn't backgrounded yet — that only happens if you go to the home screen or actually switch apps.
- interpol_p 5y agoIf the app is using the Background App Refresh entitlements [1] (Background fetch / background processing) then it is possible for iOS to update the screenshot for the app switcher periodically even when the app is in the background Messages does this, as you will notice that an active conversation tends to be up-to-date in the app switcher [1] https://developer.apple.com/documentation/uikit/app_and_environment/scenes/preparing_your_ui_to_run_in_the_background/using_background_tasks_to_update_your_app https://developer.apple.com/documentation/uikit/app_and_envi...