In one embodiment, an electronic device is provided, comprising: a display; a touch-sensitive surface; one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: displaying, on the display, an application launching user interface that includes a plurality of application icons for launching corresponding applications; while displaying the application launching user interface, detecting a first single-finger touch input that includes detecting the first single-finger touch input at a location on the touch-sensitive surface that corresponds to a first application icon of the plurality of application icons, wherein the first application icon is for launching a first application that is associated with one or more corresponding quick actions; and in response to detecting the first single-finger touch input, determining a response to the first single-finger touch input based on evaluating the first single-finger touch input against at least one of a plurality of criteria, including evaluating a duration of the first single-finger touch input against at least one of: one or more application-launch criteria or one or more quick-action-display criteria, for: in accordance with a determination that the first single-finger touch input meets the one or more application-launch criteria that is met when the duration of the first single-finger touch input is below a time threshold, launching the first application; and in accordance with a determination that the first single-finger touch input meets the one or more quick-action-display criteria that is met when the duration of the first single-finger touch input is greater than the time threshold, displaying one or more quick action objects associated with the first application without launching the first application.