每个app有且只有一个UIApplication对象,当程序启动的时候通过调用UIApplicationMain方法得到的。可以通过sharedApplication方法得到。

UIApplication对象的主要任务是处理用户事件的处理路径,例如分发一个UIEvent到另外一个对象去处理。UIApplication对象持有众多的UIWindow对象,因此可以组织app的展示。UIApplication对象还能处理一些资源,例如通过openURL:打开邮箱客户端或者设置界面等。

获得UIApplication对象

[UIApplication sharedApplication]

获得UIApplicationDelegate对象

[[UIApplication sharedApplication] delegate]

获得UIWindow对象

[[UIApplication sharedApplication] windows];   //UIWindow数组
[[UIApplication sharedApplication] keyWindow]; //UIWindow数组中最后调用makeKeyAndVisible方法的UIWindow对象

控制和处理UIEvent

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{//分发一个event到另外一个对象去处理
[[UIApplication sharedApplication] sendAction:@selector(action: forEvent:) to:[CustomHandler sharedCustomHandler] from:self forEvent:event];
}
[[UIApplication sharedApplication] beginIgnoringInteractionEvents]; //开始忽略Event
//...中间调用动画等操作
[[UIApplication sharedApplication] endIgnoringInteractionEvents]; //结束忽略Event
[UIApplication sharedApplication].applicationSupportsShakeToEdit = YES;  //晃动是否有撤销或者重做动作

打开URL资源

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];//打开设置界面

配置通知设置

UIUserNotificationType  types = UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert;
UIUserNotificationSettings *mySettings = [UIUserNotificationSettings settingsForTypes:types categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:mySettings]; //注册远程推送通知
[[UIApplication sharedApplication] registerForRemoteNotifications];//注册
[[UIApplication sharedApplication] unregisterForRemoteNotifications];//注销
    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:10];
UILocalNotification *localNotif = [[UILocalNotification alloc] init];
localNotif.fireDate = date; //时间
localNotif.timeZone = [NSTimeZone localTimeZone]; //时区
localNotif.repeatInterval = NSCalendarUnitMinute; //间隔
localNotif.soundName = UILocalNotificationDefaultSoundName; //声音
localNotif.alertBody = @"Local Test"; //通知内容
localNotif.applicationIconBadgeNumber = 1; //数字标示
localNotif.userInfo = @{@"key":@"test"}; //info
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif]; //注册通知
    [[UIApplication sharedApplication] presentLocalNotificationNow:localNotif]; //立即通知
[[UIApplication sharedApplication] cancelAllLocalNotifications]; //取消所有通知
[[UIApplication sharedApplication] cancelLocalNotification:localNotif]; //取消特定的通知 NSArray *arr = [[UIApplication sharedApplication] scheduledLocalNotifications]; //所有的通知

后台运行相关

    [[UIApplication sharedApplication] applicationState]; //app状态
[[UIApplication sharedApplication] setMinimumBackgroundFetchInterval:3600]; //设置后台运行时间
NSTimeInterval remainTime = [[UIApplication sharedApplication] backgroundTimeRemaining]; //app后台运行的时间
NSLog(@"remainTIme = %f",remainTime);
int state = [[UIApplication sharedApplication] backgroundRefreshStatus]; //后台刷新的状态
NSLog(@"state = %d",state);
[[UIApplication sharedApplication] beginBackgroundTaskWithName:@"taskOne" expirationHandler:^{
}];
[[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{
}];
[[UIApplication sharedApplication] endBackgroundTask:1];

远程的控制相关

    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
[[UIApplication sharedApplication] endReceivingRemoteControlEvents];

系统的Idle Timer

[UIApplication sharedApplication].idleTimerDisabled = YES; //不让手机休眠

APP样式

    //隐藏状态条
[[UIApplication sharedApplication] setStatusBarHidden:YES];
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
//设置状态条的样式
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault];
[[UIApplication sharedApplication] statusBarStyle];
//状态条的Frame
[[UIApplication sharedApplication] statusBarFrame];
//网络是否可见
[[UIApplication sharedApplication] isNetworkActivityIndicatorVisible];
//badge数字
[UIApplication sharedApplication].applicationIconBadgeNumber = 2;
//屏幕的方向
[[UIApplication sharedApplication] userInterfaceLayoutDirection];

设置状态条的方向

[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:YES];

数据类型

UIBackgroundTaskIdentifier : Int
typedef enum : NSUInteger {
UIRemoteNotificationTypeNone = 0,
UIRemoteNotificationTypeBadge = 1 << 0,
UIRemoteNotificationTypeSound = 1 << 1,
UIRemoteNotificationTypeAlert = 1 << 2,
UIRemoteNotificationTypeNewsstandContentAvailability = 1 << 3
} UIRemoteNotificationType;
typedef enum : NSInteger {
UIStatusBarStyleDefault,
UIStatusBarStyleLightContent, UIStatusBarStyleBlackTranslucent,
UIStatusBarStyleBlackOpaque
} UIStatusBarStyle;
typedef enum : NSInteger {
UIStatusBarAnimationNone,
UIStatusBarAnimationFade,
UIStatusBarAnimationSlide,
} UIStatusBarAnimation;
typedef enum : NSInteger  {
UIApplicationStateActive ,
UIApplicationStateInactive ,
UIApplicationStateBackground
} UIApplicationState;
const UIBackgroundTaskIdentifier  UIBackgroundTaskInvalid ;
const NSTimeInterval UIMinimumKeepAliveTimeout;
typedef enum : NSUInteger  {
UIBackgroundFetchResultNewData ,
UIBackgroundFetchResultNoData ,
UIBackgroundFetchResultFailed
} UIBackgroundFetchResult;
const NSTimeInterval  UIApplicationBackgroundFetchIntervalMinimum ;
const NSTimeInterval UIApplicationBackgroundFetchIntervalNever;
typedef enum : NSUInteger  {
UIBackgroundRefreshStatusRestricted ,
UIBackgroundRefreshStatusDenied ,
UIBackgroundRefreshStatusAvailable
} UIBackgroundRefreshStatus;
typedef enum : NSInteger  {
UIInterfaceOrientationUnknown = UIDeviceOrientationUnknown ,
UIInterfaceOrientationPortrait = UIDeviceOrientationPortrait ,
UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown ,
UIInterfaceOrientationLandscapeLeft = UIDeviceOrientationLandscapeRight ,
UIInterfaceOrientationLandscapeRight = UIDeviceOrientationLandscapeLeft
} UIInterfaceOrientation;
typedef enum : NSInteger  {
UIUserInterfaceLayoutDirectionLeftToRight ,
UIUserInterfaceLayoutDirectionRightToLeft ,
} UIUserInterfaceLayoutDirection;
NSString *const  UIApplicationOpenSettingsURLString;
NSString *const  UIApplicationStatusBarOrientationUserInfoKey ;
NSString *const UIApplicationStatusBarFrameUserInfoKey;
NSString *const  UIContentSizeCategoryExtraSmall ;
NSString *const UIContentSizeCategorySmall ;
NSString *const UIContentSizeCategoryMedium ;
NSString *const UIContentSizeCategoryLarge ;
NSString *const UIContentSizeCategoryExtraLarge ;
NSString *const UIContentSizeCategoryExtraExtraLarge ;
NSString *const UIContentSizeCategoryExtraExtraExtraLarge;
NSString *const  UIContentSizeCategoryAccessibilityMedium ;
NSString *const UIContentSizeCategoryAccessibilityLarge ;
NSString *const UIContentSizeCategoryAccessibilityExtraLarge ;
NSString *const UIContentSizeCategoryAccessibilityExtraExtraLarge ;
NSString *const UIContentSizeCategoryAccessibilityExtraExtraExtraLarge;
NSString *const  UIApplicationInvalidInterfaceOrientationException;

通知

UIApplicationBackgroundRefreshStatusDidChangeNotification
UIApplicationDidBecomeActiveNotification
UIApplicationDidChangeStatusBarFrameNotification
UIApplicationDidChangeStatusBarOrientationNotification
UIApplicationDidEnterBackgroundNotification
UIApplicationDidFinishLaunchingNotification
UIApplicationDidReceiveMemoryWarningNotification
UIApplicationProtectedDataDidBecomeAvailable
UIApplicationProtectedDataWillBecomeUnavailable
UIApplicationSignificantTimeChangeNotification
UIApplicationUserDidTakeScreenshotNotification
UIApplicationWillChangeStatusBarOrientationNotification
UIApplicationWillChangeStatusBarFrameNotification
UIApplicationWillEnterForegroundNotification
UIApplicationWillResignActiveNotification
UIApplicationWillTerminateNotification
UIContentSizeCategoryDidChangeNotification 转自:http://www.open-open.com/lib/view/open1420634129218.html

UIApplication详解的更多相关文章

  1. 【转】iOS UIApplication详解

    1.状态栏UIStateBar的设置是在UIApplication里面设置的,它包含4中风格 2. - (void)beginIgnoringInteractionEvents; (void)endI ...

  2. iOS之UIApplication详解

    UIApplication对象特点: 特点1: UIApplication对象是应用程序的象征,一个UIApplication对象就代表一个应用程序,而且是单例的.(用来封装整个应用程序的一个对象, ...

  3. UIApplication详解再解-备

    每个app有且只有一个UIApplication对象,当程序启动的时候通过调用UIApplicationMain方法得到的.可以通过sharedApplication方法得到. UIApplicati ...

  4. iOS学习之UINavigationController详解与使用(一)添加UIBarButtonItem

    http://blog.csdn.net/totogo2010/article/details/7681879 1.UINavigationController导航控制器如何使用 UINavigati ...

  5. 详解CALayer 和 UIView的区别和联系

    详解CALayer 和 UIView的区别和联系   前言 前面发了一篇iOS 面试的文章,在说到 UIView 和 CALayer 的区别和联系的时候,被喵神指出没有切中要点,所以这里就 CALay ...

  6. UINavigationController详解一(转)UIBarButtonItem

    本文出自:http://www.cnblogs.com/smileEvday/archive/2012/05/14/2495153.html 特别感谢. 1.UINavigationControlle ...

  7. (转)iOS应用程序生命周期(前后台切换,应用的各种状态)详解

    原文:http://blog.csdn.net/totogo2010/article/details/8048652 iOS应用程序生命周期(前后台切换,应用的各种状态)详解         分类:  ...

  8. iOS开发——实用技术OC篇&事件处理详解

    事件处理详解 一:事件处理 事件处理常见属性: 事件类型 @property(nonatomic,readonly) UIEventType     type; @property(nonatomic ...

  9. iOS开发——多线程OC篇&多线程详解

    多线程详解 前面介绍了多线程的各种方式及其使用,这里补一点关于多线程的概念及相关技巧与使用,相信前面不懂的地方看了这里之后你就对多线程基本上没有什么问题了! 1——首先ios开发多线程中必须了解的概念 ...

随机推荐

  1. Android SDK Tools 更新

    C:\WINDOWS\system32\drivers\etc\hosts 文件用记事本打开后 添加下面的 74.125.237.1 dl-ssl.google.com

  2. windows系统中WIN键的快捷组合

    1.WIN+E    打开我的电脑(计算机) 2.WIN+D      返回桌面 当你在用聊天工具与朋友聊天时,旁边突然出现某位小伙伴,快速按下WIN+D返回到桌面就可以很好的保护你的聊天内容啦! 3 ...

  3. jQuery(一)

    1,浏览器内核不同-->兼容性问题-->不同浏览器相对应不同代码 2,javascript框架, 只写代码,不用考虑浏览器兼容问题  prototype.mootools.jQuery(目 ...

  4. 并查集 poj2236

    网址:http://poj.org/problem?id=2236 题意:有n台坏的电脑,如果每两台电脑的距离不能超过d,那么这两台电脑有联系,用字符串O 表示标记第x台电脑维修了,用S判断从X到y是 ...

  5. jQuery.last() 函数

    last() 函数详解 函数 获取当前对象的最后一个元素 语法 $selector.last() 返回值 返回值为一个对象 实例说明 代码 <!DOCTYPE html><html ...

  6. reggetvalue在xp下加载失败

    在windows 32bit的xp下使用reggetvalue会提示,无法定位程序输入点reggetvalueW于动态链接库advapi32.dll(UNICODE).reggetvalueA也是无法 ...

  7. 高德地图JavaScript开发

    项目需求:标注一个或者两个点.显示信息窗体.自定义icon <!DOCTYPE html> <html lang="en"> <head> &l ...

  8. Java开发常用的在线工具

    原文出处: hollischuang(@Hollis_Chuang) 作为一个Java开发人员,经常要和各种各样的工具打交道,除了我们常用的IDE工具以外,其实还有很多工具是我们在日常开发及学习过程中 ...

  9. 总结oninput、onchange与onpropertychange事件的用法和区别,onchange

    前端页面开发的很多情况下都需要实时监听文本框输入,比如腾讯微博编写140字的微博时输入框hu9i动态显示还可以输入的字数.过去一般都使用onchange/onkeyup/onkeypress/onke ...

  10. 安装Python时遇到如下问题,解决方案

    ~$ sudo apt-get install python-pip 正在读取软件包列表... 完成 正在分析软件包的依赖关系树 正在读取状态信息... 完成 python-pip 已经是最新的版本了 ...