Description: Demo a simple drawing tools, adjustable brush thickness and color can be revoked on the step of the operation or all of the operations with the eraser function, you can save the picture to the local album.
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File list (Check if you may need any files):
MyPalette
.........\.DS_Store
__MACOSX
........\MyPalette
........\.........\._.DS_Store
MyPalette\build
.........\.....\Debug-iphonesimulator
.........\.....\.....................\MyPalette.app
.........\.....\.....................\.............\Info.plist
.........\.....\.....................\.............\logo.png
.........\.....\.....................\.............\MainWindow.nib
.........\.....\.....................\.............\MyPalette
.........\.....\.....................\.............\MyPaletteViewController.nib
.........\.....\.....................\.............\PkgInfo
.........\.....\.....................\MyPalette.app.dSYM
.........\.....\.....................\..................\Contents
.........\.....\.....................\..................\........\Info.plist
.........\.....\.....................\..................\........\Resources
.........\.....\.....................\..................\........\.........\DWARF
.........\.....\.....................\..................\........\.........\.....\MyPalette
.........\.....\MyPalette.build
.........\.....\...............\Debug-iphonesimulator
.........\.....\...............\.....................\MyPalette.build
.........\.....\...............\.....................\...............\build-state.dat
.........\.....\...............\.....................\...............\build-state~.dat
.........\.....\...............\.....................\...............\MyPalette-all-target-headers.hmap
.........\.....\...............\.....................\...............\MyPalette-generated-files.hmap
.........\.....\...............\.....................\...............\MyPalette-own-target-headers.hmap
.........\.....\...............\.....................\...............\MyPalette-project-headers.hmap
.........\.....\...............\.....................\...............\MyPalette.dep
.........\.....\...............\.....................\...............\MyPalette.hmap
.........\.....\...............\.....................\...............\MyPalette~.dep
.........\.....\...............\.....................\...............\Objects-normal
.........\.....\...............\.....................\...............\..............\i386
.........\.....\...............\.....................\...............\..............\....\main.o
.........\.....\...............\.....................\...............\..............\....\MyPalette.LinkFileList
.........\.....\...............\.....................\...............\..............\....\MyPaletteAppDelegate.o
.........\.....\...............\.....................\...............\..............\....\MyPaletteViewController.o
.........\.....\...............\.....................\...............\..............\....\Palette.o
__MACOSX\MyPalette\build
........\.........\.....\._MyPalette.build
........\.........\._build
MyPalette\Classes
.........\.......\MyPaletteAppDelegate.h
.........\.......\MyPaletteAppDelegate.m
.........\.......\MyPaletteViewController.h
.........\.......\MyPaletteViewController.m
.........\.......\Palette.h
.........\.......\Palette.m
__MACOSX\MyPalette\Classes
........\.........\.......\._Palette.m
MyPalette\logo.png
.........\main.m
.........\MainWindow.xib
.........\MyPalette-Info.plist
__MACOSX\MyPalette\._MyPalette-Info.plist
MyPalette\MyPalette.xcodeproj
.........\...................\ldci.mode1v3
.........\...................\ldci.pbxuser
.........\...................\project.pbxproj
.........\...................\project.xcworkspace
.........\...................\...................\contents.xcworkspacedata
.........\...................\...................\xcuserdata
.........\...................\...................\..........\hualingqian.xcuserdatad
.........\...................\...................\..........\.......................\UserInterfaceState.xcuserstate
.........\...................\...................\..........\ldci.xcuserdatad
.........\...................\...................\..........\................\UserInterfaceState.xcuserstate
.........\...................\...................\..........\...........