Device, Method, and Graphical User Interface for Adjusting a Display Property of an Affordance Over Changing Background Content

摘要

An electronic device, while displaying the user interface of an application in a first mode, displays an affordance with a first appearance over a portion of the user interface, and values of display properties of the affordance change in accordance with a change in values of display properties of the portion of the user interface that underlies the affordance, in accordance with a first set of rules. Upon transitioning from displaying the user interface in the first mode to displaying the user interface in a second mode, the affordance is displayed with a second appearance, and values of display properties of the affordance change in accordance with a change in the values of display properties of the portion of the user interface that underlies the affordance, in accordance with a second set of rules that are different from the first set of rules.