在Android中实现自定义的按钮

http://bend-ing.blogspot.com/2008/10/android-how-to-implement-custom-button.html

http://www.anddev.org/tinytutcustom_button_backgrounds-better_imagebutton-t4298.html

http://go2-cn4.appspot.com/_?bG10aC5zdG5lbm9wbW9jLW1vdHN1Yy9pdS9zY2lwb3QvZWRpdWcvbW9jLmRpb3JkbmEucmVwb2xldmVkLy86cHR0aA==