An electronic device with a touch-sensitive surface and a display, that includes one or more sensors to detect intensity of contacts with the touch-sensitive surface, displays a plurality of application icons, where the plurality of application icons include a respective application icon corresponding to a respective application. While a focus selector is over the respective application icon, the device detects a gesture that includes a contact on the touch-sensitive surface; and in response to detecting the gesture: when the contact had a maximum intensity during the gesture that was below a respective intensity threshold, the device displays an application window of the respective application; and when the contact reached an intensity during the gesture that was above the respective intensity threshold, the device displays a plurality of user interface objects that correspond to the respective application.