A circular button, similar to the iPod entity keys below, learning IOS programming source code, a good reference.

.gitignore
Classes
.......\PieMenu.h
.......\PieMenu.m
.......\PieMenuItem.h
.......\PieMenuItem.m
.......\PieView.h
.......\PieView.m
.......\TouchPieAppDelegate.h
.......\TouchPieAppDelegate.m
.......\TouchPieViewController.h
.......\TouchPieViewController.m
Icon.png
icon1.png
icon2.png
icon3.png
icon4.png
Info.plist
LICENSE.txt
main.m
MainWindow.xib
TouchPie.xcodeproj
..................\project.pbxproj
TouchPieViewController.xib
TouchPie_Prefix.pch

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