Distorted CCMenuItem Images

I have created a menu in iOS, but when i run it in an Android, the buttons are all pixelated and distorted. When it goes to the pressed image, it displays properly though.
There is no problem with the image used because the distortion happens for some buttons only and always differently.
If anyone else faced this issue, please help.
I haven’t posted any code because I have written the normal code.
If nothing else, is it something to do with the design resolution size?