Abstract: The technology described in this application relates to an application switching method and a terminal. The method includes a terminal running a first application in the foreground, locking a screen of the terminal in response to a lock screen instruction, and when the terminal meets a preset condition of running a second application, unlocking the screen of the terminal in response to an unlock instruction, and running the second application in the foreground.

Abstract: An in-vehicle charging adaptor device includes a plug main body and a cap separatably matched with the plug main body. The plug main body has a cigarette lighter plug formed at one end thereof, an USB socket formed at the other end thereof. A circuit device is received in the plug main body electrically connected with the cigarette lighter plug and the USB socket. The present invention has reasonable structure design, reliable function, and convenient practical usage with decorative function.