ELECTRONIC DEVICE AND METHOD OF PROCESSING POP-UP WINDOW USING MULTI-WINDOW THEREOF

Various embodiments of the present disclosure relate to an electronic device and a method of processing a pop-up window using a multi-window thereof. The electronic device includes: a housing; a display viewable through a first face of the housing; a processor operatively coupled with the display; and a memory operatively coupled with the processor. The memory may store instructions which, when executed, cause the processor to control the electronic device to: in response to occurrence of an event, display a pop-up window including a first User Interface (UI) corresponding to the event in some regions of the display, detect an input requesting extending and displaying the pop-up window, identify whether a multi-window is active in response to the detection of the input, and based on the multi-window being active, remove the pop-up window and display a second UI for the event on a sub-window having a lowest priority among at least one sub-window other than a main window among the multi-windows.