Delete an image file but it seems still exists

I displayed an image file in an image view. But since I need change picture, then I delete the previous image file. But once build and run, that deleted image still exists in image view.

The image seems not be dele开发者_运维百科ted.

Does anyone know why this kind of situation occur?

Any suggestion, solutions, comments are appreciated.

Thanks.

clean your build, remove application from the simulator/device, and then reinstall, it will help.