iOS UIKit框架—UIApplication

在iOS中UIApplication类提供一个集中点控制和协调应用程序的运行。每个APP都有一个UIApplication实例对象，当程序启动的时候通过调用UIApplicationMain方法，创建单例对象UIApplication。此后可以通过sharedApplication()可以得到方法。

@protocol UIApplicationDelegate;

@interface UIApplication : UIResponder

#if UIKIT_DEFINE_AS_PROPERTIES
@property(class, nonatomic, readonly) UIApplication *sharedApplication NS_EXTENSION_UNAVAILABLE_IOS("Use view controller based solutions where appropriate instead.");
#else
+ (UIApplication *)sharedApplication NS_EXTENSION_UNAVAILABLE_IOS("Use view controller based solutions where appropriate instead.");
#endif

@property(nullable, nonatomic, assign) id<UIApplicationDelegate> delegate;

// 开始、结束响应事件
- (void)beginIgnoringInteractionEvents NS_EXTENSION_UNAVAILABLE_IOS("");
- (void)endIgnoringInteractionEvents NS_EXTENSION_UNAVAILABLE_IOS("");
// 是否响应事件
#if UIKIT_DEFINE_AS_PROPERTIES
@property(nonatomic, readonly, getter=isIgnoringInteractionEvents) BOOL ignoringInteractionEvents;
#else
- (BOOL)isIgnoringInteractionEvents;
#endif
// 屏幕长亮
@property(nonatomic,getter=isIdleTimerDisabled)       BOOL idleTimerDisabled;      // default is NO
// 打开URL资源
- (BOOL)openURL:(NSURL*)url NS_DEPRECATED_IOS(2_0, 10_0, "Please use openURL:options:completionHandler: instead") NS_EXTENSION_UNAVAILABLE_IOS("");
// 返回一个bool值， 是否从已经安装的 apps 中跳转
- (BOOL)canOpenURL:(NSURL *)url NS_AVAILABLE_IOS(3_0);

// 异步打开URL资源
- (void)openURL:(NSURL*)url options:(NSDictionary<NSString *, id> *)options completionHandler:(void (^ __nullable)(BOOL success))completion NS_AVAILABLE_IOS(10_0) NS_EXTENSION_UNAVAILABLE_IOS("");

// 发送事件给app内适用的响应者
- (void)sendEvent:(UIEvent *)event;
// app的主视图
@property(nullable, nonatomic,readonly) UIWindow *keyWindow;
// 隐藏和可见的所有window
@property(nonatomic,readonly) NSArray<__kindof UIWindow *>  *windows;
// 发送一个含选择器的动作消息到指定的目标
- (BOOL)sendAction:(SEL)action to:(nullable id)target from:(nullable id)sender forEvent:(nullable UIEvent *)event;
// 是否在状态栏展示网络请求活动
@property(nonatomic,getter=isNetworkActivityIndicatorVisible) BOOL networkActivityIndicatorVisible __TVOS_PROHIBITED; // default is NO
// 获取状态栏的风格
@property(readonly, nonatomic) UIStatusBarStyle statusBarStyle __TVOS_PROHIBITED;
// 状态栏是否隐藏
@property(readonly, nonatomic,getter=isStatusBarHidden) BOOL statusBarHidden __TVOS_PROHIBITED;
// 当前状态栏的方向 
@property(readonly, nonatomic) UIInterfaceOrientation statusBarOrientation __TVOS_PROHIBITED;

// 实现代理设置屏幕支持的方向
- (UIInterfaceOrientationMask)supportedInterfaceOrientationsForWindow:(nullable UIWindow *)window NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
// 获取旋转屏幕的时间
@property(nonatomic,readonly) NSTimeInterval statusBarOrientationAnimationDuration __TVOS_PROHIBITED;
// 获取状态栏的frame
@property(nonatomic,readonly) CGRect statusBarFrame __TVOS_PROHIBITED;
// 应用角标未读消息数字，设置0的时候隐藏，在iOS 8 必须注册后才能使用： -[UIApplication registerUserNotificationSettings:]
@property(nonatomic) NSInteger applicationIconBadgeNumber;
// 是否支持摇动手势
@property(nonatomic) BOOL applicationSupportsShakeToEdit NS_AVAILABLE_IOS(3_0) __TVOS_PROHIBITED;
// 应用的运行状态
@property(nonatomic,readonly) UIApplicationState applicationState NS_AVAILABLE_IOS(4_0);
// 后台运行剩余时间
@property(nonatomic,readonly) NSTimeInterval backgroundTimeRemaining NS_AVAILABLE_IOS(4_0);
// 后台任务管理
- (UIBackgroundTaskIdentifier)beginBackgroundTaskWithExpirationHandler:(void(^ __nullable)(void))handler  NS_AVAILABLE_IOS(4_0) NS_REQUIRES_SUPER;
- (UIBackgroundTaskIdentifier)beginBackgroundTaskWithName:(nullable NSString *)taskName expirationHandler:(void(^ __nullable)(void))handler NS_AVAILABLE_IOS(7_0) NS_REQUIRES_SUPER;
- (void)endBackgroundTask:(UIBackgroundTaskIdentifier)identifier NS_AVAILABLE_IOS(4_0) NS_REQUIRES_SUPER;

// 设置后台拉去数据的时间
- (void)setMinimumBackgroundFetchInterval:(NSTimeInterval)minimumBackgroundFetchInterval NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;

// 获取后台刷新状态
@property (nonatomic, readonly) UIBackgroundRefreshStatus backgroundRefreshStatus NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;
// 是否启用数据保护 YES：未启用
@property(nonatomic,readonly,getter=isProtectedDataAvailable) BOOL protectedDataAvailable NS_AVAILABLE_IOS(4_0);
// 返回界面的布局方向
@property(nonatomic,readonly) UIUserInterfaceLayoutDirection userInterfaceLayoutDirection NS_AVAILABLE_IOS(5_0);

// 返回字体大小
@property(nonatomic,readonly) UIContentSizeCategory preferredContentSizeCategory NS_AVAILABLE_IOS(7_0);

@end

// 远程通知
@interface UIApplication (UIRemoteNotifications)

// 通过苹果推送通知注册接收远程通知服务
- (void)registerForRemoteNotifications NS_AVAILABLE_IOS(8_0);
// 注销远程通知服务
- (void)unregisterForRemoteNotifications NS_AVAILABLE_IOS(3_0);

// 应用是否注册了远程通知服务
#if UIKIT_DEFINE_AS_PROPERTIES
@property(nonatomic, readonly, getter=isRegisteredForRemoteNotifications) BOOL registeredForRemoteNotifications NS_AVAILABLE_IOS(8_0);
#else
- (BOOL)isRegisteredForRemoteNotifications NS_AVAILABLE_IOS(8_0);
#endif
// 通过注册苹果的远程推送通知，接收指定类型的服务
- (void)registerForRemoteNotificationTypes:(UIRemoteNotificationType)types NS_DEPRECATED_IOS(3_0, 8_0, "Use -[UIApplication registerForRemoteNotifications] and UserNotifications Framework's -[UNUserNotificationCenter requestAuthorizationWithOptions:completionHandler:]") __TVOS_PROHIBITED;

// 返回应用通知的接收类型
- (UIRemoteNotificationType)enabledRemoteNotificationTypes NS_DEPRECATED_IOS(3_0, 8_0, "Use -[UIApplication isRegisteredForRemoteNotifications] and UserNotifications Framework's -[UNUserNotificationCenter getNotificationSettingsWithCompletionHandler:] to retrieve user-enabled remote notification and user notification settings") __TVOS_PROHIBITED;

@end

// 本地通知
@interface UIApplication (UILocalNotifications)

// 立即呈现本地通知
- (void)presentLocalNotificationNow:(UILocalNotification *)notification NS_DEPRECATED_IOS(4_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenter addNotificationRequest:withCompletionHandler:]") __TVOS_PROHIBITED;
// 本地安排通知
- (void)scheduleLocalNotification:(UILocalNotification *)notification NS_DEPRECATED_IOS(4_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenter addNotificationRequest:withCompletionHandler:]") __TVOS_PROHIBITED;  // copies notification
// 取消指定的本地通吃
- (void)cancelLocalNotification:(UILocalNotification *)notification NS_DEPRECATED_IOS(4_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenter removePendingNotificationRequestsWithIdentifiers:]") __TVOS_PROHIBITED;
// 取消所有的本地通知
- (void)cancelAllLocalNotifications NS_DEPRECATED_IOS(4_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenter removeAllPendingNotificationRequests]") __TVOS_PROHIBITED;
// 返回本地日程安排通知数组
@property(nullable,nonatomic,copy) NSArray<UILocalNotification *> *scheduledLocalNotifications NS_DEPRECATED_IOS(4_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenter getPendingNotificationRequestsWithCompletionHandler:]") __TVOS_PROHIBITED;

@end

// 设置通知
@class UIUserNotificationSettings;
@interface UIApplication (UIUserNotificationSettings)

// 注册通知
- (void)registerUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings NS_AVAILABLE_IOS(8_0) __TVOS_PROHIBITED;

// 返回当前用户启用的通知
#if UIKIT_DEFINE_AS_PROPERTIES
@property(nonatomic, readonly, nullable) UIUserNotificationSettings *currentUserNotificationSettings NS_AVAILABLE_IOS(8_0) __TVOS_PROHIBITED;
#else
- (nullable UIUserNotificationSettings *)currentUserNotificationSettings NS_AVAILABLE_IOS(8_0) __TVOS_PROHIBITED;
#endif

@end

// 远程控制事件
@interface UIApplication (UIRemoteControlEvents)

// 开始接受远程遥控事件
- (void)beginReceivingRemoteControlEvents NS_AVAILABLE_IOS(4_0);
// 停止接受远程遥控事件
- (void)endReceivingRemoteControlEvents NS_AVAILABLE_IOS(4_0);

@end

@interface UIApplication (UINewsstand)
// 设置一个报摊的icon
- (void)setNewsstandIconImage:(nullable UIImage *)image NS_DEPRECATED_IOS(5_0, 9_0, "Newsstand apps now behave like normal apps on SpringBoard") __TVOS_PROHIBITED;
@end

@class UIApplicationShortcutItem;
// 管理3D Touch的快速操作
@interface UIApplication (UIShortcutItems)
// 主屏幕用户使用3D Touch功能的菜单数组
@property (nullable, nonatomic, copy) NSArray<UIApplicationShortcutItem *> *shortcutItems NS_AVAILABLE_IOS(9_0) __TVOS_PROHIBITED;
@end

// 管理恢复状态行为
@protocol UIStateRestoring;
@interface UIApplication (UIStateRestoration)
// 正在恢复状态
- (void)extendStateRestoration  NS_AVAILABLE_IOS(6_0);
// 恢复完成状态
- (void)completeStateRestoration  NS_AVAILABLE_IOS(6_0);
// 防止应用在一个启动的声明周期使用最近的屏幕快照
- (void)ignoreSnapshotOnNextApplicationLaunch NS_AVAILABLE_IOS(7_0);
// 注册一个恢复状态对象的id
+ (void)registerObjectForStateRestoration:(id<UIStateRestoring>)object restorationIdentifier:(NSString *)restorationIdentifier NS_AVAILABLE_IOS(7_0);
@end


#if UIKIT_STRING_ENUMS
typedef NSString * UIApplicationLaunchOptionsKey NS_EXTENSIBLE_STRING_ENUM;
#else
typedef NSString * UIApplicationLaunchOptionsKey;
#endif

@protocol UIApplicationDelegate<NSObject>

@optional
// 应用生命周期
// 应用启动完成执行
- (void)applicationDidFinishLaunching:(UIApplication *)application;
#if UIKIT_STRING_ENUMS
// 应用启动进程已经开始，但部分状态没有完全恢复
- (BOOL)application:(UIApplication *)application willFinishLaunchingWithOptions:(nullable NSDictionary<UIApplicationLaunchOptionsKey, id> *)launchOptions NS_AVAILABLE_IOS(6_0);
//  告诉代理启动基本完成程序准备开始运行（加载到窗口，可以看到）
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(nullable NSDictionary<UIApplicationLaunchOptionsKey, id> *)launchOptions NS_AVAILABLE_IOS(3_0);
#else
- (BOOL)application:(UIApplication *)application willFinishLaunchingWithOptions:(nullable NSDictionary *)launchOptions NS_AVAILABLE_IOS(6_0);
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(nullable NSDictionary *)launchOptions NS_AVAILABLE_IOS(3_0);
#endif
// 当应用程序回到激活状态执行 （回到窗口，可以看到)
- (void)applicationDidBecomeActive:(UIApplication *)application;
// 当应用程序将要进入非活动状态执行，在此期间，应用程序不接收消息或事件，比如来电话了
- (void)applicationWillResignActive:(UIApplication *)application;
// 请求委托打开由url标示的资源
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url NS_DEPRECATED_IOS(2_0, 9_0, "Please use application:openURL:options:") __TVOS_PROHIBITED;
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(nullable NSString *)sourceApplication annotation:(id)annotation NS_DEPRECATED_IOS(4_2, 9_0, "Please use application:openURL:options:") __TVOS_PROHIBITED;


#if UIKIT_STRING_ENUMS
typedef NSString * UIApplicationOpenURLOptionsKey NS_EXTENSIBLE_STRING_ENUM;
#else
typedef NSString * UIApplicationOpenURLOptionsKey;
#endif
// 请求委托打开由url标示的资源
- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options NS_AVAILABLE_IOS(9_0);
// 接收来自系统内存警告
- (void)applicationDidReceiveMemoryWarning:(UIApplication *)application;
// 当程序将要退出是被调用，通常是用来保存数据和一些退出前的清理工作。这个需要要设置
- (void)applicationWillTerminate:(UIApplication *)application;
// 重要时间的变化
- (void)applicationSignificantTimeChange:(UIApplication *)application;        // midnight, carrier time update, daylight savings time change
// 当状态栏的方向即将要发生改变时执行
- (void)application:(UIApplication *)application willChangeStatusBarOrientation:(UIInterfaceOrientation)newStatusBarOrientation duration:(NSTimeInterval)duration __TVOS_PROHIBITED;
// 当状态栏的方向发生改变时执行
- (void)application:(UIApplication *)application didChangeStatusBarOrientation:(UIInterfaceOrientation)oldStatusBarOrientation __TVOS_PROHIBITED;
// 当状态栏的frame即将要发生改变时执行
- (void)application:(UIApplication *)application willChangeStatusBarFrame:(CGRect)newStatusBarFrame __TVOS_PROHIBITED;   // in screen coordinates
// 当状态栏的frame发生改变时执行
- (void)application:(UIApplication *)application didChangeStatusBarFrame:(CGRect)oldStatusBarFrame __TVOS_PROHIBITED;

// 处理本地和远程通知
// 注册本地或远程通知类型
- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings NS_AVAILABLE_IOS(8_0) __TVOS_PROHIBITED;
// 远程推送通知注册成功回调
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken NS_AVAILABLE_IOS(3_0);
// 无法成功注册推送通知服务回调
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error NS_AVAILABLE_IOS(3_0);
// 收到远程推送通知执行
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo NS_DEPRECATED_IOS(3_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenterDelegate willPresentNotification:withCompletionHandler:] or -[UNUserNotificationCenterDelegate didReceiveNotificationResponse:withCompletionHandler:] for user visible notifications and -[UIApplicationDelegate application:didReceiveRemoteNotification:fetchCompletionHandler:] for silent remote notifications");
// 收到本地推送通知执行
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification NS_DEPRECATED_IOS(4_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenterDelegate willPresentNotification:withCompletionHandler:] or -[UNUserNotificationCenterDelegate didReceiveNotificationResponse:withCompletionHandler:]") __TVOS_PROHIBITED;

// 当应用被激活时，处理用户从本地推送通知中选择操作的事件
- (void)application:(UIApplication *)application handleActionWithIdentifier:(nullable NSString *)identifier forLocalNotification:(UILocalNotification *)notification completionHandler:(void(^)())completionHandler NS_DEPRECATED_IOS(8_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenterDelegate didReceiveNotificationResponse:withCompletionHandler:]") __TVOS_PROHIBITED;
// 当应用被激活时，处理用户从远程推送通知中选择操作的事件
- (void)application:(UIApplication *)application handleActionWithIdentifier:(nullable NSString *)identifier forRemoteNotification:(NSDictionary *)userInfo withResponseInfo:(NSDictionary *)responseInfo completionHandler:(void(^)())completionHandler NS_DEPRECATED_IOS(9_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenterDelegate didReceiveNotificationResponse:withCompletionHandler:]") __TVOS_PROHIBITED;

- (void)application:(UIApplication *)application handleActionWithIdentifier:(nullable NSString *)identifier forRemoteNotification:(NSDictionary *)userInfo completionHandler:(void(^)())completionHandler NS_DEPRECATED_IOS(8_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenterDelegate didReceiveNotificationResponse:withCompletionHandler:]") __TVOS_PROHIBITED;

- (void)application:(UIApplication *)application handleActionWithIdentifier:(nullable NSString *)identifier forLocalNotification:(UILocalNotification *)notification withResponseInfo:(NSDictionary *)responseInfo completionHandler:(void(^)())completionHandler NS_DEPRECATED_IOS(9_0, 10_0, "Use UserNotifications Framework's -[UNUserNotificationCenterDelegate didReceiveNotificationResponse:withCompletionHandler:]") __TVOS_PROHIBITED;

// 一个远程通知到达，表明有数据要获取
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler NS_AVAILABLE_IOS(7_0);

// 如果有有数据下载，它可以开始获取操作
- (void)application:(UIApplication *)application performFetchWithCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;

// 主屏幕3D Touch快捷选项操作启动应用执行
- (void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void(^)(BOOL succeeded))completionHandler NS_AVAILABLE_IOS(9_0) __TVOS_PROHIBITED;

// 与URL有关的事件正等待处理
- (void)application:(UIApplication *)application handleEventsForBackgroundURLSession:(NSString *)identifier completionHandler:(void (^)())completionHandler NS_AVAILABLE_IOS(7_0);

// 相应Watch的配对请求
- (void)application:(UIApplication *)application handleWatchKitExtensionRequest:(nullable NSDictionary *)userInfo reply:(void(^)(NSDictionary * __nullable replyInfo))reply NS_AVAILABLE_IOS(8_2);

// 应用将要获取用户健康数据时调用
- (void)applicationShouldRequestHealthAuthorization:(UIApplication *)application NS_AVAILABLE_IOS(9_0);

// 当程序被推送到后台的时候调用
- (void)applicationDidEnterBackground:(UIApplication *)application NS_AVAILABLE_IOS(4_0);
// 当程序将要被推送到前台的时候调用
- (void)applicationWillEnterForeground:(UIApplication *)application NS_AVAILABLE_IOS(4_0);

// 保护文件不可用
- (void)applicationProtectedDataWillBecomeUnavailable:(UIApplication *)application NS_AVAILABLE_IOS(4_0);
// 保护文件可用
- (void)applicationProtectedDataDidBecomeAvailable:(UIApplication *)application    NS_AVAILABLE_IOS(4_0);

// 呈现的故事版
@property (nullable, nonatomic, strong) UIWindow *window NS_AVAILABLE_IOS(5_0);

// 应用视图支持的方向
- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(nullable UIWindow *)window  NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;

#if UIKIT_STRING_ENUMS
typedef NSString * UIApplicationExtensionPointIdentifier NS_EXTENSIBLE_STRING_ENUM;
#else
typedef NSString * UIApplicationExtensionPointIdentifier;
#endif

// 将要扩展的指定标识符的应用
- (BOOL)application:(UIApplication *)application shouldAllowExtensionPointIdentifier:(UIApplicationExtensionPointIdentifier)extensionPointIdentifier NS_AVAILABLE_IOS(8_0);

#pragma mark -- State Restoration protocol adopted by UIApplication delegate --

// 提供指定视图控制器
- (nullable UIViewController *) application:(UIApplication *)application viewControllerWithRestorationIdentifierPath:(NSArray *)identifierComponents coder:(NSCoder *)coder NS_AVAILABLE_IOS(6_0);
// 是否保存应用的状态信息 ↓
- (BOOL) application:(UIApplication *)application shouldSaveApplicationState:(NSCoder *)coder NS_AVAILABLE_IOS(6_0);
// 是否恢复应用保存的状态信息 ↑
- (BOOL) application:(UIApplication *)application shouldRestoreApplicationState:(NSCoder *)coder NS_AVAILABLE_IOS(6_0);
// 处理保存高级状态的信息
- (void) application:(UIApplication *)application willEncodeRestorableStateWithCoder:(NSCoder *)coder NS_AVAILABLE_IOS(6_0);
// 恢复一部分保存的高级状态的信息
- (void) application:(UIApplication *)application didDecodeRestorableStateWithCoder:(NSCoder *)coder NS_AVAILABLE_IOS(6_0);

#pragma mark -- User Activity Continuation protocol adopted by UIApplication delegate --

// 当活动比预期时间长的时候，是否继续通知
- (BOOL)application:(UIApplication *)application willContinueUserActivityWithType:(NSString *)userActivityType NS_AVAILABLE_IOS(8_0);

// 告诉继续活动期间数据是否可用
- (BOOL)application:(UIApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void(^)(NSArray * __nullable restorableObjects))restorationHandler NS_AVAILABLE_IOS(8_0);

// 应用注册远程推送通知失败时激发该方法
- (void)application:(UIApplication *)application didFailToContinueUserActivityWithType:(NSString *)userActivityType error:(NSError *)error NS_AVAILABLE_IOS(8_0);

// 更新活动
- (void)application:(UIApplication *)application didUpdateUserActivity:(NSUserActivity *)userActivity NS_AVAILABLE_IOS(8_0);

#pragma mark -- CloudKit Sharing Invitation Handling --
// 同意接受云共享请求
- (void) application:(UIApplication *)application userDidAcceptCloudKitShareWithMetadata:(CKShareMetadata *)cloudKitShareMetadata NS_AVAILABLE_IOS(10_0);

@end

@interface UIApplication(UIApplicationDeprecated)

// 获取状态栏的方向
@property(readwrite, nonatomic) UIInterfaceOrientation statusBarOrientation NS_DEPRECATED_IOS(2_0, 9_0, "Explicit setting of the status bar orientation is more limited in iOS 6.0 and later") __TVOS_PROHIBITED;
// 设置状态栏的方向
- (void)setStatusBarOrientation:(UIInterfaceOrientation)interfaceOrientation animated:(BOOL)animated NS_DEPRECATED_IOS(2_0, 9_0, "Explicit setting of the status bar orientation is more limited in iOS 6.0 and later") __TVOS_PROHIBITED;

// 当前状态栏的样式
@property(readwrite, nonatomic) UIStatusBarStyle statusBarStyle NS_DEPRECATED_IOS(2_0, 9_0, "Use -[UIViewController preferredStatusBarStyle]") __TVOS_PROHIBITED;
// 设置状态栏的样式
- (void)setStatusBarStyle:(UIStatusBarStyle)statusBarStyle animated:(BOOL)animated NS_DEPRECATED_IOS(2_0, 9_0, "Use -[UIViewController preferredStatusBarStyle]") __TVOS_PROHIBITED;

// 当前状态栏是否隐藏
@property(readwrite, nonatomic,getter=isStatusBarHidden) BOOL statusBarHidden NS_DEPRECATED_IOS(2_0, 9_0, "Use -[UIViewController prefersStatusBarHidden]") __TVOS_PROHIBITED;
// 隐藏状态栏
- (void)setStatusBarHidden:(BOOL)hidden withAnimation:(UIStatusBarAnimation)animation NS_DEPRECATED_IOS(3_2, 9_0, "Use -[UIViewController prefersStatusBarHidden]") __TVOS_PROHIBITED;
// 设置后台停留时间
- (BOOL)setKeepAliveTimeout:(NSTimeInterval)timeout handler:(void(^ __nullable)(void))keepAliveHandler NS_DEPRECATED_IOS(4_0, 9_0, "Please use UIRemoteNotificationTypeVoIP remote notifications for VoIP applications") __TVOS_PROHIBITED;
// 清除后台停留时间
- (void)clearKeepAliveTimeout NS_DEPRECATED_IOS(4_0, 9_0, "Please use UIRemoteNotificationTypeVoIP remote notifications for VoIP applications") __TVOS_PROHIBITED;

@end

// 创建应用程序的主要入口
UIKIT_EXTERN int UIApplicationMain(int argc, char *argv[], NSString * __nullable principalClassName, NSString * __nullable delegateClassName);
// 省略一部分全局变量

@end

// 状态栏风格
typedef NS_ENUM(NSInteger, UIStatusBarStyle) {
UIStatusBarStyleDefault                                     = 0, // 黑色，用于亮的背景
UIStatusBarStyleLightContent     NS_ENUM_AVAILABLE_IOS(7_0) = 1, // 白色，用于深色背景

UIStatusBarStyleBlackTranslucent NS_ENUM_DEPRECATED_IOS(2_0, 7_0, "Use UIStatusBarStyleLightContent") = 1,
UIStatusBarStyleBlackOpaque      NS_ENUM_DEPRECATED_IOS(2_0, 7_0, "Use UIStatusBarStyleLightContent") = 2,
} __TVOS_PROHIBITED;

// 状态栏动画效果
typedef NS_ENUM(NSInteger, UIStatusBarAnimation) {
UIStatusBarAnimationNone, // 无
UIStatusBarAnimationFade NS_ENUM_AVAILABLE_IOS(3_2), // 褪去
UIStatusBarAnimationSlide NS_ENUM_AVAILABLE_IOS(3_2), // 滑出
} __TVOS_PROHIBITED;

// 支持屏幕旋转的方向
// UIDeviceOrientation：是机器硬件的当前旋转方向，这个你只能取值，不能设置
// UIInterfaceOrientation：是你程序界面的当前旋转方向，这个可以设置
typedef NS_ENUM(NSInteger, UIInterfaceOrientation) {
UIInterfaceOrientationUnknown            = UIDeviceOrientationUnknown, // 不支持屏幕旋转
UIInterfaceOrientationPortrait           = UIDeviceOrientationPortrait, // 支持旋转
UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown, // 旋转180°
UIInterfaceOrientationLandscapeLeft      = UIDeviceOrientationLandscapeRight, // 顺时针 向右旋转90°
UIInterfaceOrientationLandscapeRight     = UIDeviceOrientationLandscapeLeft // 逆时针旋转 向左旋转90°
} __TVOS_PROHIBITED;

// 设置屏幕支持旋转的方向
typedef NS_OPTIONS(NSUInteger, UIInterfaceOrientationMask) {
UIInterfaceOrientationMaskPortrait = (1 << UIInterfaceOrientationPortrait),
UIInterfaceOrientationMaskLandscapeLeft = (1 << UIInterfaceOrientationLandscapeLeft), // 向左旋转90°
UIInterfaceOrientationMaskLandscapeRight = (1 << UIInterfaceOrientationLandscapeRight), // 向右旋转90°
UIInterfaceOrientationMaskPortraitUpsideDown = (1 << UIInterfaceOrientationPortraitUpsideDown), // 旋转180°
UIInterfaceOrientationMaskLandscape = (UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight), // 向左右旋转即横屏
UIInterfaceOrientationMaskAll = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight | UIInterfaceOrientationMaskPortraitUpsideDown), // 支持任意方向旋转
UIInterfaceOrientationMaskAllButUpsideDown = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight), // 除旋转180°所有方向
} __TVOS_PROHIBITED;

// 判断旋转是否有效
#define UIDeviceOrientationIsValidInterfaceOrientation(orientation) ((UIDeviceOrientation)(orientation) == UIDeviceOrientationPortrait || (UIDeviceOrientation)(orientation) == UIDeviceOrientationPortraitUpsideDown || (UIDeviceOrientation)(orientation) == UIDeviceOrientationLandscapeLeft || (UIDeviceOrientation)(orientation) == UIDeviceOrientationLandscapeRight)

// 屏幕是否横屏
static inline BOOL UIInterfaceOrientationIsPortrait(UIInterfaceOrientation orientation) __TVOS_PROHIBITED {
return ((orientation) == UIInterfaceOrientationPortrait || (orientation) == UIInterfaceOrientationPortraitUpsideDown);
}

// 屏幕是否竖屏
static inline BOOL UIInterfaceOrientationIsLandscape(UIInterfaceOrientation orientation) __TVOS_PROHIBITED {
return ((orientation) == UIInterfaceOrientationLandscapeLeft || (orientation) == UIInterfaceOrientationLandscapeRight);
}

// 注册远程通知 角标、声音、提示
typedef NS_OPTIONS(NSUInteger, UIRemoteNotificationType) {
UIRemoteNotificationTypeNone    = 0,
UIRemoteNotificationTypeBadge   = 1 << 0,
UIRemoteNotificationTypeSound   = 1 << 1,
UIRemoteNotificationTypeAlert   = 1 << 2,
UIRemoteNotificationTypeNewsstandContentAvailability = 1 << 3,
} NS_ENUM_DEPRECATED_IOS(3_0, 8_0, "Use UserNotifications Framework's UNAuthorizationOptions for user notifications and registerForRemoteNotifications for receiving remote notifications instead.") __TVOS_PROHIBITED;

// 后台处理拉取数据结果类型
typedef NS_ENUM(NSUInteger, UIBackgroundFetchResult) {
UIBackgroundFetchResultNewData, // 成功拉去数据
UIBackgroundFetchResultNoData, // 没有数据
UIBackgroundFetchResultFailed // 拉出数据失败或超时
} NS_ENUM_AVAILABLE_IOS(7_0);

// 后台刷新状态
typedef NS_ENUM(NSInteger, UIBackgroundRefreshStatus) {
UIBackgroundRefreshStatusRestricted, // 受限制
UIBackgroundRefreshStatusDenied, // 被拒绝
UIBackgroundRefreshStatusAvailable // 可用
} NS_ENUM_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;

//  app 运行状态
typedef NS_ENUM(NSInteger, UIApplicationState) {
UIApplicationStateActive, // 在前台运行
UIApplicationStateInactive, // 待激活状态：锁屏、下拉看通知、任务管理
UIApplicationStateBackground // 在后台运行：按下home键
} NS_ENUM_AVAILABLE_IOS(4_0);

// 任务标示
typedef NSUInteger UIBackgroundTaskIdentifier;
// 设置无效的任务
UIKIT_EXTERN const UIBackgroundTaskIdentifier UIBackgroundTaskInvalid  NS_AVAILABLE_IOS(4_0);
// 后台保持的最小时间
UIKIT_EXTERN const NSTimeInterval UIMinimumKeepAliveTimeout  NS_AVAILABLE_IOS(4_0);
// 请求的最小间隔(刷新最频繁)
UIKIT_EXTERN const NSTimeInterval UIApplicationBackgroundFetchIntervalMinimum NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;
// 请求的最大间隔，阻止请求(不刷新)
UIKIT_EXTERN const NSTimeInterval UIApplicationBackgroundFetchIntervalNever NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;

最后编辑于：2017.12.08 06:37:59

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iOS UIKit框架—UIApplication

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