原文地址：https://gist.github.com/hpique/7554209

// Developer/Library/Frameworks/SenTestingKit.framework/Headers/SenTestCaseRun.hSENTEST_EXPORT NSString * const SenTestCaseDidStartNotification;SENTEST_EXPORT NSString * const SenTestCaseDidStopNotification;SENTEST_EXPORT NSString * const SenTestCaseDidFailNotification;// Developer/Library/Frameworks/SenTestingKit.framework/Headers/SenTestDistributedNotifier.hSENTEST_EXPORT NSString * const SenTestNotificationIdentifierKey;// Developer/Library/Frameworks/SenTestingKit.framework/Headers/SenTestSuiteRun.hSENTEST_EXPORT NSString * const SenTestSuiteDidStartNotification;SENTEST_EXPORT NSString * const SenTestSuiteDidStopNotification;// System/Library/Frameworks/Accounts.framework/Headers/ACAccountStore.hACCOUNTS_EXTERN NSString * const ACAccountStoreDidChangeNotification NS_AVAILABLE(NA, 5_0);// System/Library/Frameworks/AssetsLibrary.framework/Headers/ALAssetsLibrary.hextern NSString *const ALAssetsLibraryChangedNotification __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_0);// System/Library/Frameworks/AVFoundation.framework/Headers/AVAudioSession.hAVF_EXPORT NSString *const AVAudioSessionInterruptionNotification NS_AVAILABLE_IOS(6_0);AVF_EXPORT NSString *const AVAudioSessionRouteChangeNotification NS_AVAILABLE_IOS(6_0);AVF_EXPORT NSString *const AVAudioSessionMediaServicesWereLostNotification NS_AVAILABLE_IOS(7_0);AVF_EXPORT NSString *const AVAudioSessionMediaServicesWereResetNotification NS_AVAILABLE_IOS(6_0);AVF_EXPORT NSString *const AVCaptureDeviceWasConnectedNotification NS_AVAILABLE(10_7, 4_0);// System/Library/Frameworks/AVFoundation.framework/Headers/AVCaptureDevice.hAVF_EXPORT NSString *const AVCaptureDeviceWasDisconnectedNotification NS_AVAILABLE(10_7, 4_0);AVF_EXPORT NSString *const AVCaptureDeviceSubjectAreaDidChangeNotification NS_AVAILABLE_IOS(5_0);// System/Library/Frameworks/AVFoundation.framework/Headers/AVCaptureInput.hAVF_EXPORT NSString *const AVCaptureInputPortFormatDescriptionDidChangeNotification NS_AVAILABLE(10_7, 4_0);// System/Library/Frameworks/AVFoundation.framework/Headers/AVCaptureSession.hAVF_EXPORT NSString *const AVCaptureSessionRuntimeErrorNotification NS_AVAILABLE(10_7, 4_0);AVF_EXPORT NSString *const AVCaptureSessionDidStartRunningNotification NS_AVAILABLE(10_7, 4_0);AVF_EXPORT NSString *const AVCaptureSessionDidStopRunningNotification NS_AVAILABLE(10_7, 4_0);AVF_EXPORT NSString *const AVCaptureSessionWasInterruptedNotification NS_AVAILABLE_IOS(4_0);AVF_EXPORT NSString *const AVCaptureSessionInterruptionEndedNotification NS_AVAILABLE_IOS(4_0);// System/Library/Frameworks/AVFoundation.framework/Headers/AVPlayerItem.hAVF_EXPORT NSString *const AVPlayerItemTimeJumpedNotification NS_AVAILABLE(10_7, 5_0); // the item's current time has changed discontinuouslyAVF_EXPORT NSString *const AVPlayerItemDidPlayToEndTimeNotification NS_AVAILABLE(10_7, 4_0); // item has played to its end timeAVF_EXPORT NSString *const AVPlayerItemFailedToPlayToEndTimeNotification NS_AVAILABLE(10_7, 4_3); // item has failed to play to its end timeAVF_EXPORT NSString *const AVPlayerItemPlaybackStalledNotification NS_AVAILABLE(10_9, 6_0); // media did not arrive in time to continue playbackAVF_EXPORT NSString *const AVPlayerItemNewAccessLogEntryNotification NS_AVAILABLE(10_9, 6_0); // a new access log entry has been addedAVF_EXPORT NSString *const AVPlayerItemNewErrorLogEntryNotification NS_AVAILABLE(10_9, 6_0); // a new error log entry has been added// System/Library/Frameworks/CoreBluetooth.framework/Headers/CBCentralManagerConstants.hCB_EXTERN NSString * const CBConnectPeripheralOptionNotifyOnNotificationKey NS_AVAILABLE(NA, 6_0);// System/Library/Frameworks/CoreData.framework/Headers/NSManagedObjectContext.hCOREDATA_EXTERN NSString * const NSManagedObjectContextWillSaveNotification NS_AVAILABLE(10_5, 3_0);COREDATA_EXTERN NSString * const NSManagedObjectContextDidSaveNotification NS_AVAILABLE(10_4, 3_0);COREDATA_EXTERN NSString * const NSManagedObjectContextObjectsDidChangeNotification NS_AVAILABLE(10_4, 3_0);// System/Library/Frameworks/CoreData.framework/Headers/NSPersistentStoreCoordinator.hCOREDATA_EXTERN NSString * const NSPersistentStoreCoordinatorStoresWillChangeNotification NS_AVAILABLE(10_9, 7_0);COREDATA_EXTERN NSString * const NSPersistentStoreCoordinatorStoresDidChangeNotification NS_AVAILABLE(10_4, 3_0);COREDATA_EXTERN NSString * const NSPersistentStoreCoordinatorWillRemoveStoreNotification NS_AVAILABLE(10_5, 3_0);COREDATA_EXTERN NSString * const NSPersistentStoreDidImportUbiquitousContentChangesNotification NS_AVAILABLE(10_7, 5_0);MIDI_EXPORT extern NSString *const MIDINetworkNotificationContactsDidChange __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_2);// System/Library/Frameworks/CoreMIDI.framework/Headers/MIDINetworkSession.hMIDI_EXPORT extern NSString *const MIDINetworkNotificationSessionDidChange __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_2);// System/Library/Frameworks/CoreTelephony.framework/Headers/CTTelephonyNetworkInfo.hCORETELEPHONY_EXTERN NSString * const CTRadioAccessTechnologyDidChangeNotification __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0);// System/Library/Frameworks/EventKit.framework/Headers/EKEventStore.hEVENTKIT_EXTERN NSString *const EKEventStoreChangedNotification __OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_4_0);// System/Library/Frameworks/ExternalAccessory.framework/Headers/EAAccessoryManager.hEA_EXTERN NSString *const EAAccessoryDidConnectNotification __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);EA_EXTERN NSString *const EAAccessoryDidDisconnectNotification __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);// System/Library/Frameworks/Foundation.framework/Headers/NSBundle.hFOUNDATION_EXPORT NSString * const NSBundleDidLoadNotification;// System/Library/Frameworks/Foundation.framework/Headers/NSCalendar.hFOUNDATION_EXPORT NSString * const NSCalendarDayChangedNotification NS_AVAILABLE(10_9, __NSCALENDAR_COND_IOS_7_0);FOUNDATION_EXPORT NSString * const NSSystemClockDidChangeNotification NS_AVAILABLE(10_6, 4_0);// System/Library/Frameworks/Foundation.framework/Headers/NSFileHandle.hFOUNDATION_EXPORT NSString * const NSFileHandleReadCompletionNotification;FOUNDATION_EXPORT NSString * const NSFileHandleReadToEndOfFileCompletionNotification;FOUNDATION_EXPORT NSString * const NSFileHandleConnectionAcceptedNotification;FOUNDATION_EXPORT NSString * const NSFileHandleDataAvailableNotification;FOUNDATION_EXPORT NSString * const NSFileHandleNotificationDataItem;FOUNDATION_EXPORT NSString * const NSFileHandleNotificationFileHandleItem;FOUNDATION_EXPORT NSString * const NSFileHandleNotificationMonitorModes NS_DEPRECATED(10_0, 10_7, 2_0, 5_0);// System/Library/Frameworks/Foundation.framework/Headers/NSFileManager.hextern NSString * const NSUbiquityIdentityDidChangeNotification NS_AVAILABLE(10_8, 6_0);// System/Library/Frameworks/Foundation.framework/Headers/NSHTTPCookieStorage.hFOUNDATION_EXPORT NSString * const NSHTTPCookieManagerAcceptPolicyChangedNotification;FOUNDATION_EXPORT NSString * const NSHTTPCookieManagerCookiesChangedNotification;// System/Library/Frameworks/Foundation.framework/Headers/NSKeyValueObserving.hFOUNDATION_EXPORT NSString *const NSKeyValueChangeNotificationIsPriorKey NS_AVAILABLE(10_5, 2_0);// System/Library/Frameworks/Foundation.framework/Headers/NSLocale.hFOUNDATION_EXPORT NSString * const NSCurrentLocaleDidChangeNotification NS_AVAILABLE(10_5, 2_0);// System/Library/Frameworks/Foundation.framework/Headers/NSMetadata.hFOUNDATION_EXPORT NSString * const NSMetadataQueryDidStartGatheringNotification NS_AVAILABLE(10_4, 5_0);FOUNDATION_EXPORT NSString * const NSMetadataQueryGatheringProgressNotification NS_AVAILABLE(10_4, 5_0);FOUNDATION_EXPORT NSString * const NSMetadataQueryDidFinishGatheringNotification NS_AVAILABLE(10_4, 5_0);FOUNDATION_EXPORT NSString * const NSMetadataQueryDidUpdateNotification NS_AVAILABLE(10_4, 5_0);// System/Library/Frameworks/Foundation.framework/Headers/NSPort.hFOUNDATION_EXPORT NSString * const NSPortDidBecomeInvalidNotification;// System/Library/Frameworks/Foundation.framework/Headers/NSThread.hFOUNDATION_EXPORT NSString * const NSWillBecomeMultiThreadedNotification;FOUNDATION_EXPORT NSString * const NSDidBecomeSingleThreadedNotification;FOUNDATION_EXPORT NSString * const NSThreadWillExitNotification;// System/Library/Frameworks/Foundation.framework/Headers/NSTimeZone.hFOUNDATION_EXPORT NSString * const NSSystemTimeZoneDidChangeNotification NS_AVAILABLE(10_5, 2_0);// System/Library/Frameworks/Foundation.framework/Headers/NSUbiquitousKeyValueStore.hFOUNDATION_EXPORT NSString * const NSUbiquitousKeyValueStoreDidChangeExternallyNotification NS_AVAILABLE(10_7, 5_0);// System/Library/Frameworks/Foundation.framework/Headers/NSUndoManager.hFOUNDATION_EXPORT NSString * const NSUndoManagerCheckpointNotification NS_AVAILABLE(10_0, 3_0);FOUNDATION_EXPORT NSString * const NSUndoManagerWillUndoChangeNotification NS_AVAILABLE(10_0, 3_0);FOUNDATION_EXPORT NSString * const NSUndoManagerWillRedoChangeNotification NS_AVAILABLE(10_0, 3_0);FOUNDATION_EXPORT NSString * const NSUndoManagerDidUndoChangeNotification NS_AVAILABLE(10_0, 3_0);FOUNDATION_EXPORT NSString * const NSUndoManagerDidRedoChangeNotification NS_AVAILABLE(10_0, 3_0);FOUNDATION_EXPORT NSString * const NSUndoManagerDidOpenUndoGroupNotification NS_AVAILABLE(10_0, 3_0);FOUNDATION_EXPORT NSString * const NSUndoManagerWillCloseUndoGroupNotification NS_AVAILABLE(10_0, 3_0);FOUNDATION_EXPORT NSString * const NSUndoManagerDidCloseUndoGroupNotification NS_AVAILABLE(10_7, 5_0);// System/Library/Frameworks/Foundation.framework/Headers/NSURLCredentialStorage.hFOUNDATION_EXPORT NSString *const NSURLCredentialStorageChangedNotification;// System/Library/Frameworks/Foundation.framework/Headers/NSUserDefaults.hFOUNDATION_EXPORT NSString * const NSUserDefaultsDidChangeNotification;// System/Library/Frameworks/GameController.framework/Headers/GCController.hGAMECONTROLLER_EXTERN NSString *const GCControllerDidConnectNotification;GAMECONTROLLER_EXTERN NSString *const GCControllerDidDisconnectNotification;// System/Library/Frameworks/GameKit.framework/Headers/GKLocalPlayer.hGK_EXTERN NSString *GKPlayerAuthenticationDidChangeNotificationName __OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_4_1);// System/Library/Frameworks/GameKit.framework/Headers/GKPlayer.hGK_EXTERN_WEAK NSString *GKPlayerDidChangeNotificationName;// System/Library/Frameworks/MapKit.framework/Headers/MKAnnotationView.hMK_EXTERN NSString * const MKAnnotationCalloutInfoDidChangeNotification;// System/Library/Frameworks/MediaPlayer.framework/Headers/MPMediaLibrary.h:MP_EXTERN NSString *const MPMediaLibraryDidChangeNotification;// System/Library/Frameworks/MediaPlayer.framework/Headers/MPMediaPlayback.hMP_EXTERN NSString *const MPMediaPlaybackIsPreparedToPlayDidChangeNotification NS_AVAILABLE_IOS(3_2);// System/Library/Frameworks/MediaPlayer.framework/Headers/MPMoviePlayerController.hMP_EXTERN NSString *const MPMoviePlayerScalingModeDidChangeNotification;MP_EXTERN NSString *const MPMoviePlayerPlaybackDidFinishNotification;MP_EXTERN NSString *const MPMoviePlayerPlaybackStateDidChangeNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMoviePlayerLoadStateDidChangeNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMoviePlayerNowPlayingMovieDidChangeNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMoviePlayerWillEnterFullscreenNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMoviePlayerDidEnterFullscreenNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMoviePlayerWillExitFullscreenNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMoviePlayerDidExitFullscreenNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMoviePlayerIsAirPlayVideoActiveDidChangeNotification NS_AVAILABLE_IOS(5_0);MP_EXTERN NSString *const MPMoviePlayerReadyForDisplayDidChangeNotification NS_AVAILABLE_IOS(6_0);MP_EXTERN NSString *const MPMovieMediaTypesAvailableNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMovieSourceTypeAvailableNotification NS_AVAILABLE_IOS(3_2); // Posted if the movieSourceType is MPMovieSourceTypeUnknown when preparing for playback.MP_EXTERN NSString *const MPMovieDurationAvailableNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMovieNaturalSizeAvailableNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMoviePlayerThumbnailImageRequestDidFinishNotification NS_AVAILABLE_IOS(3_2);MP_EXTERN NSString *const MPMoviePlayerTimedMetadataUpdatedNotification NS_AVAILABLE_IOS(4_0);MP_EXTERN NSString *const MPMoviePlayerContentPreloadDidFinishNotification NS_DEPRECATED_IOS(2_0, 3_2);MP_EXTERN NSString *const MPMusicPlayerControllerPlaybackStateDidChangeNotification;MP_EXTERN NSString *const MPMusicPlayerControllerNowPlayingItemDidChangeNotification;MP_EXTERN NSString *const MPMusicPlayerControllerVolumeDidChangeNotification;// System/Library/Frameworks/MediaPlayer.framework/Headers/MPVolumeView.hMP_EXTERN NSString *const MPVolumeViewWirelessRoutesAvailableDidChangeNotification NS_AVAILABLE_IOS(7_0);MP_EXTERN NSString *const MPVolumeViewWirelessRouteActiveDidChangeNotification NS_AVAILABLE_IOS(7_0);// System/Library/Frameworks/MessageUI.framework/Headers/MFMessageComposeViewController.hextern NSString *const MFMessageComposeViewControllerTextMessageAvailabilityDidChangeNotification __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_5_0);// System/Library/Frameworks/NewsstandKit.framework/Headers/NKIssue.hextern NSString *const NKIssueDownloadCompletedNotification;// System/Library/Frameworks/PassKit.framework/Headers/PKPassLibrary.hextern NSString *const PKPassLibraryDidChangeNotification NS_AVAILABLE_IOS(6_0);// System/Library/Frameworks/UIKit.framework/Headers/NSTextStorage.hUIKIT_EXTERN NSString * const NSTextStorageWillProcessEditingNotification NS_AVAILABLE_IOS(7_0);UIKIT_EXTERN NSString * const NSTextStorageDidProcessEditingNotification NS_AVAILABLE_IOS(7_0);// System/Library/Frameworks/UIKit.framework/Headers/UIAccessibility.hUIKIT_EXTERN NSString *const UIAccessibilityMonoAudioStatusDidChangeNotification NS_AVAILABLE_IOS(5_0);UIKIT_EXTERN NSString *const UIAccessibilityClosedCaptioningStatusDidChangeNotification NS_AVAILABLE_IOS(5_0);UIKIT_EXTERN NSString *const UIAccessibilityInvertColorsStatusDidChangeNotification NS_AVAILABLE_IOS(6_0);UIKIT_EXTERN NSString *const UIAccessibilityGuidedAccessStatusDidChangeNotification NS_AVAILABLE_IOS(6_0);// System/Library/Frameworks/UIKit.framework/Headers/UIAccessibilityConstants.hUIKIT_EXTERN NSString *const UIAccessibilityAnnouncementDidFinishNotification NS_AVAILABLE_IOS(6_0);// System/Library/Frameworks/UIKit.framework/Headers/UIApplication.hUIKIT_EXTERN NSString *const UIApplicationDidEnterBackgroundNotification NS_AVAILABLE_IOS(4_0);UIKIT_EXTERN NSString *const UIApplicationWillEnterForegroundNotification NS_AVAILABLE_IOS(4_0);UIKIT_EXTERN NSString *const UIApplicationDidFinishLaunchingNotification;UIKIT_EXTERN NSString *const UIApplicationDidBecomeActiveNotification;UIKIT_EXTERN NSString *const UIApplicationWillResignActiveNotification;UIKIT_EXTERN NSString *const UIApplicationDidReceiveMemoryWarningNotification;UIKIT_EXTERN NSString *const UIApplicationWillTerminateNotification;UIKIT_EXTERN NSString *const UIApplicationSignificantTimeChangeNotification;UIKIT_EXTERN NSString *const UIApplicationWillChangeStatusBarOrientationNotification; // userInfo contains NSNumber with new orientationUIKIT_EXTERN NSString *const UIApplicationDidChangeStatusBarOrientationNotification; // userInfo contains NSNumber with old orientationUIKIT_EXTERN NSString *const UIApplicationWillChangeStatusBarFrameNotification; // userInfo contains NSValue with new frameUIKIT_EXTERN NSString *const UIApplicationDidChangeStatusBarFrameNotification; // userInfo contains NSValue with old frameUIKIT_EXTERN NSString *const UIApplicationBackgroundRefreshStatusDidChangeNotification NS_AVAILABLE_IOS(7_0);UIKIT_EXTERN NSString *const UIApplicationLaunchOptionsRemoteNotificationKey NS_AVAILABLE_IOS(3_0); // userInfo contains NSDictionary with payloadUIKIT_EXTERN NSString *const UIApplicationLaunchOptionsLocalNotificationKey NS_AVAILABLE_IOS(4_0); // userInfo contains a UILocalNotificationUIKIT_EXTERN NSString *const UIContentSizeCategoryDidChangeNotification NS_AVAILABLE_IOS(7_0); // userInfo dictionary will contain new value for UIContentSizeCategoryNewValueKeyUIKIT_EXTERN NSString *const UIApplicationUserDidTakeScreenshotNotification NS_AVAILABLE_IOS(7_0);// System/Library/Frameworks/UIKit.framework/Headers/UIDevice.hUIKIT_EXTERN NSString *const UIDeviceOrientationDidChangeNotification;UIKIT_EXTERN NSString *const UIDeviceBatteryStateDidChangeNotification NS_AVAILABLE_IOS(3_0);UIKIT_EXTERN NSString *const UIDeviceBatteryLevelDidChangeNotification NS_AVAILABLE_IOS(3_0);UIKIT_EXTERN NSString *const UIDeviceProximityStateDidChangeNotification NS_AVAILABLE_IOS(3_0);// System/Library/Frameworks/UIKit.framework/Headers/UIDocument.hUIKIT_EXTERN NSString *const UIDocumentStateChangedNotification NS_AVAILABLE_IOS(5_0);// System/Library/Frameworks/UIKit.framework/Headers/UILocalNotification.hUIKIT_EXTERN NSString *const UILocalNotificationDefaultSoundName NS_AVAILABLE_IOS(4_0);// System/Library/Frameworks/UIKit.framework/Headers/UIMenuController.hUIKIT_EXTERN NSString *const UIMenuControllerWillShowMenuNotification;UIKIT_EXTERN NSString *const UIMenuControllerDidShowMenuNotification;UIKIT_EXTERN NSString *const UIMenuControllerWillHideMenuNotification;UIKIT_EXTERN NSString *const UIMenuControllerDidHideMenuNotification;UIKIT_EXTERN NSString *const UIMenuControllerMenuFrameDidChangeNotification;// System/Library/Frameworks/UIKit.framework/Headers/UIPasteboard.hUIKIT_EXTERN NSString *const UIPasteboardChangedNotification;UIKIT_EXTERN NSString *const UIPasteboardRemovedNotification;// System/Library/Frameworks/UIKit.framework/Headers/UIScreen.hUIKIT_EXTERN NSString *const UIScreenDidConnectNotification NS_AVAILABLE_IOS(3_2);UIKIT_EXTERN NSString *const UIScreenDidDisconnectNotification NS_AVAILABLE_IOS(3_2);UIKIT_EXTERN NSString *const UIScreenModeDidChangeNotification NS_AVAILABLE_IOS(3_2);UIKIT_EXTERN NSString *const UIScreenBrightnessDidChangeNotification NS_AVAILABLE_IOS(5_0);// System/Library/Frameworks/UIKit.framework/Headers/UITableView.hUIKIT_EXTERN NSString *const UITableViewSelectionDidChangeNotification;// System/Library/Frameworks/UIKit.framework/Headers/UITextField.hUIKIT_EXTERN NSString *const UITextFieldTextDidBeginEditingNotification;UIKIT_EXTERN NSString *const UITextFieldTextDidEndEditingNotification;UIKIT_EXTERN NSString *const UITextFieldTextDidChangeNotification;// System/Library/Frameworks/UIKit.framework/Headers/UITextInput.hUIKIT_EXTERN NSString *const UITextInputCurrentInputModeDidChangeNotification NS_AVAILABLE_IOS(4_2);// System/Library/Frameworks/UIKit.framework/Headers/UITextView.hUIKIT_EXTERN NSString * const UITextViewTextDidBeginEditingNotification;UIKIT_EXTERN NSString * const UITextViewTextDidChangeNotification;UIKIT_EXTERN NSString * const UITextViewTextDidEndEditingNotification;// System/Library/Frameworks/UIKit.framework/Headers/UIWindow.hUIKIT_EXTERN NSString *const UIWindowDidBecomeVisibleNotification; // nilUIKIT_EXTERN NSString *const UIWindowDidBecomeHiddenNotification; // nilUIKIT_EXTERN NSString *const UIWindowDidBecomeKeyNotification; // nilUIKIT_EXTERN NSString *const UIWindowDidResignKeyNotification; // nilUIKIT_EXTERN NSString *const UIKeyboardWillShowNotification;UIKIT_EXTERN NSString *const UIKeyboardDidShowNotification;UIKIT_EXTERN NSString *const UIKeyboardWillHideNotification;UIKIT_EXTERN NSString *const UIKeyboardDidHideNotification;UIKIT_EXTERN NSString *const UIKeyboardWillChangeFrameNotification NS_AVAILABLE_IOS(5_0);复制代码