ONE BUTTON APP
My inspiration comes from a game. The rules of the game are to choose from three directions: up, left, right. The head of the human cannot be aligned with the direction of the opponent's hand.
I designed the interface of the game in Sketch
I named the photos pointed by three fingers as "4.jpg", "5.jpg", "6.jpg", and then used a random number generation function to randomly select one of the three photos and put them into ImageNames [4 ].