Is there a way to protect content(images, sounds) in an iPhone app?

I have some apps in the Apple app store that have lots of expensive images and sounds. There are apps now, like PhoneView and PhoneDisk, that can easily load the contents of apps, and the material can be downloaded.

Is there a method to protect ag开发者_如何学编程ainst this?

You can obfuscate your assets. From the simple (removing file extensions) to the difficult (encrypting them), but if someone really determined to see your assets, there's no way to stop them.