The uiuiapplication of Uikit frame

1. Succession chain: Uiresponder:nsobject

2. UsesharedApplication方法来存取对象

3. This class can abide by the agreement is Uiapplicationdelegate

4. Get an instance of the app

(1) + (uiapplication *)sharedapplication : Returns a single app instance

5. Get the app delegate

(1) @property(nonatomic, assign) ID< uiapplicationdelegate >　　delegate : Set Delegate

6. Get the App window

(1) @property(nonatomic, readonly) uiwindow *keywindow : Key window of the app

(2) @property(nonatomic, readonly) nsarray <__kindof UIWindow *> *windows : Returns an array of visible, hidden windows of the app

7. Control and Control events

(1)-(void) sendevent: (uievent *)　　event : Dispatches an event to the appropriate response object in the app

(2)-(bool) sendaction: (sel) action
                 to: (id) target
               from: (id) Sender
          forevent: ( span class= "n" >uievent *) event :

action	A Selector identifying an action method. See the discussion for information on the permitted selector forms.
target	The object to receive the action message. If target nil is, the app sends the message to the first responder, from whence it progresses up the responder chain Unti L it is handled.
sender	The object is sending the action message. The default sender is the UIControl object, the invokes this method.
event	A UIEvent object that encapsulates information about the event originating the action message.

(3)-(void)beginignoringinteractionevents : Call this method to notify the receiver to delay processing and touch-related events before starting the animation and conversion

(4)-(void)endignoringinteractionevents : Call this method after calling the method, animation, or conversion above to notify the receiver to re-process and touch the related event

(5)-(BOOL)isignoringinteractionevents : Returns whether a Boolean value allows the receiver to ignore touch events that occur on the screen

(6) @property(nonatomic) BOOL applicationsupportsshaketoedit : A Boolean value determines whether the device shake can be displayed Undo-redo user interface

8. Open a URL resource

(1)-(BOOL)OpenURL: (nsurl *) url : Attempt to open the specified URL, return the value to determine whether it can be opened

(2)-(BOOL)canopenurl: (nsurl *) url : Returns a Boolean value that determines whether the app can open a specified URL path

9. Configure user notification settings

(1)-(void)registerusernotificationsettings: (uiusernotificationsettings *) notificationSettings : Registration Notification Preferences

(2)-(uiusernotificationsettings *)currentusernotificationsettings : Returns the notification settings currently set for the app

10. Registering a remote notification

(1)-(void)registerforremotenotifications : Registering a remote notification

(2)-(void)unregisterforremotenotifications : refuses to accept any remote notifications

(3)-(BOOL)isregisteredforremotenotifications : Returns a Boolean value that determines whether the current enlistment is a remote notification

11. Register Local Notifications

(1)-(void)schedulelocalnotification: (uilocalnotification *) notification : Time notification for delivery of local encapsulation

(2)-(void)Presentlocalnotificationnow: (uilocalnotification *) notification : Show local notifications now

(3)-(void)cancellocalnotification: (uilocalnotification *) notification : Cancels delivery of the specified local timesheet notification

(4) @property(nonatomic, copy) nsarray <uilocalnotification *>　　*scheduledlocalnotifications : Local notifications for all current timesheets

12. Manage Background execution

(1) @property(nonatomic, readonly) uiapplicationstate applicationstate : The state of the app runtime

(2) @property(nonatomic, readonly) nstimeinterval backgroundtimeremaining : The time the app runs in the background

(3) @property(nonatomic, readonly) uibackgroundrefreshstatus Backgroundrefreshstatus : Programs that have the ability to execute in the background

(4)-(void)Setminimumbackgroundfetchinterval: (nstimeinterval) minimumBackgroundFetchInterval : Specifies when the program waits for execution

(5)-(uibackgroundtaskidentifier)beginbackgroundtaskwithname: (nsstring *) taskName
Expirationhandler: (void (^) (void)) handler : Uses the specified name to flag a new long-running background task

(6)-(uibackgroundtaskidentifier)beginbackgroundtaskwithexpirationhandler: (void (^) (void)) handler : Marks the start of a new long-running background task

(7)-(void)Endbackgroundtask: (uibackgroundtaskidentifier) identifier : Indicates that the specified background task has ended

13. Managing Idle time for Apps

(1) @property(nonatomic, getter=isidletimerdisabled) BOOL idletimerdisabled : Whether idle time can be used by the app

14. Managing the status of Recovery behavior

(1)-(void)extendstaterestoration : Tells app code to start an asynchronous recovery state

(2)-(void)completestaterestoration : tells the app that it has been asynchronously restored

(3)-(void)ignoresnapshotonnextapplicationlaunch :P revents the app from using the recent snapshot imag e during the next launch cycle.

(4) + (void)registerobjectforstaterestoration: (id<uistaterestoring>) object
Restora Tionidentifier: (nsstring *) restorationIdentifier : Registering a custom object for the state recovery system

15. Manage Home screen Quick Actions for 3D Touch

(1) @property(nonatomic, copy) nsarray <uiapplicationshortcutitem * > *shortcutitems : Set this property to Register an array of dynamic quick actions to display on the Home screen when a user presses your app icon.

16. Decide what you can protect

(1) @property(nonatomic, readonly, getter=isprotecteddataavailable) BOOL　　protecteddataavailable : The return value determines whether the content is protected

17. Registering Remote Control Events

(1)-(void)beginreceivingremotecontrolevents : Tell the app to start accepting remote control events

(2)-(void)endreceivingremotecontrolevents : Tell the app to end accepting remote control events

18. Control the display of the app

(1) @property(nonatomic, readonly) cgrect statusbarframe : reads the position and size of the status bar

(2) @property(nonatomic, getter=isnetworkactivityindicatorvisible) BOOL　　networkactivityindicatorvisible : Is the network able to use

(3) @property(nonatomic) nsinteger applicationiconbadgenumber : The number currently set as the badge of the app icon in Springboard.

(4) @property(nonatomic, readonly) uiuserinterfacelayoutdirection Userinterfacelayoutdirection : Returns the layout direction of the user interface

18. Get Font Size preference

(1) @property(nonatomic, readonly) nsstring * Preferredcontentsizecategory : User preferred Font Size selection

19. Managing the default interface orientation

(1)-(uiinterfaceorientationmask)Supportedinterfaceorientationsforwindow: (UIWindow *) window : Returns the interface orientation supported by the specified window

20. Manage the orientation of the status bar

(1) @property(nonatomic, readonly) nstimeinterval Statusbarorientationanimationduration : Animated transitions in the status bar when the device is 90 degrees in transition

21. Data type

(1) Uistatusbarstyle type

Uistatusbarstyledefault,: Black status bar

Uistatusbarstylelightcontent,: Bright status bar

Uistatusbarstyleblacktranslucent,: Black transparent status bar

Uistatusbarstyleblackopaque: Black opaque status bar

(2)UIStatusBarAnimation类型


Uistatusbaranimationnone: There is no animation when the status bar is displayed and hidden

Uistatusbaranimationfade: Use fade fade animation when status bar is displayed and hidden

Uistatusbaranimationslide: Use sliding animations when the status bar is displayed and hidden

22. Constant (1) Uiapplicationstate constantuiapplicationstateactive: app is running on the front and accepting events uiapplicationstateinactive: app is running on the front end but not accepting events uiapplicationstatebackground : App is running in the background (2) Background Task constants constantConst uibackgroundtaskidentifier uibackgroundtaskinvalid; : This constant should be used to initialize a constant or to check for an error Const nstimeinterval uiminimumkeepalivetimeout; : The time the app should run in the background

(3) Uibackgroundfetchresult Constants

Uibackgroundfetchresultnewdata,: New data successfully loaded

Uibackgroundfetchresultnodata: No new data can be loaded into

Uibackgroundfetchresultfailed: Data Load Failure

23. Notice

(1) Uiapplicationbackgroundrefreshstatusdidchangenotification: This notification is sent when the value of the Backgroundrefreshstatus property changes

(2)UIApplicationDidBecomeActiveNotification　　:当app将要成为活跃状态的时候就会发送这个通知

(3) Uiapplicationdidchangestatusbarframenotification: This notification will be sent when the frame of the status bar has been changed to the end

(4) Uiapplicationdidchangestatusbarorientationnotification: This notification is sent when the orientation of the app's user interface changes

(5) Uiapplicationdidenterbackgroundnotification: This notification is sent when the app is in the background

(6) Uiapplicationdidfinishlaunchingnotification: This notification will be sent when the app finishes booting

(7)UIApplicationDidReceiveMemoryWarningNotification　　:当可用运行内存不足的时候就会发送这个通知

(8) Uiapplicationprotecteddatadidbecomeavailable: This notification is sent when the protected file is ready to be used

(9) Uiapplicationprotecteddatawillbecomeunavailable: This notification is sent when a protected file is locked and becomes not available

(10) Uiapplicationsignificanttimechangenotification: This notification is sent when there is a significant time change, such as changing to a new day

(11) Uiapplicationuserdidtakescreenshotnotification: This notification is sent when the home button and the button are pressed

(12) Uiapplicationwillchangestatusbarorientationnotification: This notification is sent when the app changes the direction of the interface

(13) Uiapplicationwillchangestatusbarframenotification: This notification is sent when the frame of the status bar starts to change

(14) Uiapplicationwillenterforegroundnotification: This notification is sent when the app is going to be active from the background to the front end

(15) Uiapplicationwillresignactivenotification: This notification is sent when the app is no longer active or out of focus

(16) Uiapplicationwillterminatenotification: This notification will be sent when the app terminates

(17) Uicontentsizecategorydidchangenotification: This notification is sent when the user changes the set content size

The uiuiapplication of Uikit frame