当按下另一个图像视图时，如何使一个图像视图消失？

I'm trying to make a gun simulator app where a row of bullets disappear one by one with every click of the gun. What Java code is needed in order to make bullet1 disappear when you click the gun the first time and to make bullet2 disappear the second time the gun is pressed? I'm trying to make a gun simulator app where a