iOS应用启动launchOptions字典中的key值

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsURLKey                   NS_AVAILABLE_IOS(3_0); // userInfo contains NSURL with launch URL

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsSourceApplicationKey     NS_AVAILABLE_IOS(3_0); // userInfo contains NSString with launch app bundle ID

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsRemoteNotificationKey    NS_AVAILABLE_IOS(3_0) __TVOS_PROHIBITED; // userInfo contains NSDictionary with payload

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsLocalNotificationKey     NS_DEPRECATED_IOS(4_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenterDelegate didReceiveNotificationResponse:withCompletionHandler:]") __TVOS_PROHIBITED; // userInfo contains a UILocalNotification

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsAnnotationKey            NS_AVAILABLE_IOS(3_2); // userInfo contains object with annotation property list

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsLocationKey              NS_AVAILABLE_IOS(4_0); // app was launched in response to a CoreLocation event.

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsNewsstandDownloadsKey    NS_AVAILABLE_IOS(5_0) __TVOS_PROHIBITED; // userInfo contains an NSArray of NKAssetDownload identifiers

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsBluetoothCentralsKey     NS_AVAILABLE_IOS(7_0); // userInfo contains an NSArray of CBCentralManager restore identifiers

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsBluetoothPeripheralsKey  NS_AVAILABLE_IOS(7_0); // userInfo contains an NSArray of CBPeripheralManager restore identifiers

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsShortcutItemKey          NS_AVAILABLE_IOS(9_0) __TVOS_PROHIBITED; // userInfo contains the UIApplicationShortcutItem used to launch the app.

// Key in options dict passed to application:[will | did]FinishLaunchingWithOptions and info for UIApplicationDidFinishLaunchingNotification

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsUserActivityDictionaryKey NS_AVAILABLE_IOS(8_0); // Sub-Dictionary present in launch options when user activity is present

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsUserActivityTypeKey NS_AVAILABLE_IOS(8_0); // Key in user activity dictionary for the activity type

UIKIT_EXTERN UIApplicationLaunchOptionsKey const UIApplicationLaunchOptionsCloudKitShareMetadataKey NS_AVAILABLE_IOS(10_0) __TVOS_PROHIBITED; // The presence of this key indicates that the app was launched in order to handle a CloudKit sharing invitation. The value of this key is a CKShareMetadata object.