Sheets are full-screen views that you can use to present sub-tasks. Sheets overlay the current context by appearing from the bottom of the screen onto a full-screen view. When users complete the task, sheets slide down and disappear, returning users to their original location on the screen.
Users cannot swipe left or right on the content area of a sheet to navigate back. However, users can peek at the underlying UI by dragging their finger to the right. This approach helps prevent users from accidentally dismissing the sheet.
You can use sheets for the following situations:
Include a title bar at the top of a sheet that contains buttons for applicable actions. This approach helps users complete and dismiss the sheet easily. It also helps prevent users from submitting information accidentally by separating the action buttons from a virtual keyboard.