App extensions are a feature introduced in iOS 8 that allows apps to extend their functionality and become available to users while they're using other apps. Extensions are created to do a specific task, such as enabling sharing Safari pages through your app, or to display an interface in Notification Center for your app.
App extensions are a feature introduced in iOS 8 that allows apps to extend their functionality and become available to users while they are using other apps.
Extensions are created to do a specific task, such as enabling sharing Safari pages through your app, or to display an interface in Notification Center for your app.
