Description: examples of the ios official sdk download easy to learn, a friend in need can take a look to see compressed package name to know is what controls.
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File list (Check if you may need any files):
BatteryStatus
.............\BatteryStatus-Info.plist
.............\BatteryStatus.xcodeproj
.............\.......................\project.pbxproj
.............\BatteryStatus_Prefix.pch
.............\Classes
.............\.......\BatteryStatusAppDelegate.h
.............\.......\BatteryStatusAppDelegate.m
.............\.......\RootViewController.h
.............\.......\RootViewController.m
.............\Default.png
.............\English.lproj
.............\.............\Localizable.strings
.............\.............\MainWindow.xib
.............\.............\RootViewController.xib
.............\images
.............\......\Icon-72.png
.............\......\Icon-Small-50.png
.............\......\Icon-Small.png
.............\......\Icon-Small@2x.png
.............\......\Icon.png
.............\......\Icon@2x.png
.............\......\iTunesArtwork
.............\main.m
.............\ReadMe.txt
.............\StatusClear.png
.............\StatusGreen.png