关于AppDelegate里面的那些函数方法

//启动基本完成程序准备开始运行.

- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions {

returnYES;

}

//当应用程序将要进入非活动状态.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 {}

//当程序被推送到后台的时候调用。所以要设置后台继续运行，则在这个函数里面设置即可.

- (void)applicationDidEnterBackground:(UIApplication*)application {}

//当程序从后台将要重新回到前台时候调用.

- (void)applicationWillEnterForeground:(UIApplication*)application {}

//当应用程序入活动状态执行.

- (void)applicationDidBecomeActive:(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UIApplicationExitsOnSuspend的键值。

- (void)applicationWillTerminate:(UIApplication*)application {}

//请求委托打开一个 URL资源

- (BOOL)application:(UIApplication*) application handleOpenURL:(NSURL*)url{}

//请求委托打开一个 URL资源

- (BOOL)application:(UIApplication*) application openURL:(NSURL*)url sourceApplication:(NSString*)sourceApplication annotation:(id)annotation{}

//当内存低告警时

- (void)applicationDidReceiveMemoryWarning:(UIApplication*)application{}

//当系统时间发生显著改变时

-(void)applicationSignificantTimeChange:(UIApplication*)application{}

//当一个运行着的应用程序收到一个远程的通知 发送到委托去...7.0之前

- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo{}

//当一个运行着的应用程序收到一个远程的通知 发送到委托去...7.0之后

- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo fetchCompletionHandler:(void(^)(UIBackgroundFetchResult))completionHandler{}

//当一个应用程序成功的注册一个推送服务（APS） 发送到委托去...

-(void)application :(UIApplication*) application

didRegisterForRemoteNotificationsWithDeviceToken:(NSData*) deviceToken{}

//当 APS无法成功的完成向 程序进程推送时 发送到委托去..

-(void)application :(UIApplication*) application

didFailToRegisterForRemoteNotificationsWithError:(NSError*) error{}

//当一个运行着的应用程序收到一个本地的通知 发送到委托去...

-(void)application :(UIApplication*) application didReceiveLocalNotification:(UILocalNotification*)notification{}

1.设置icon上的数字图标

//设置主界面icon上的数字图标，在2.0中引进， 缺省为0

[UIApplicationsharedApplication].applicationIconBadgeNumber= 4;

2.设置摇动手势的时候，是否支持redo,undo操作

//摇动手势，是否支持redo undo操作。

//3.0以后引进，缺省YES

[UIApplicationsharedApplication].applicationSupportsShakeToEdit=YES;

3.判断程序运行状态

//判断程序运行状态，在2.0以后引入

if([UIApplicationsharedApplication].applicationState==UIApplicationStateInactive){

NSLog(@"程序在运行状态");

}

4.阻止屏幕变暗进入休眠状态

//阻止屏幕变暗，慎重使用,缺省为no 2.0

[UIApplicationsharedApplication].idleTimerDisabled=YES;

慎重使用本功能，因为非常耗电。

5.显示联网状态

//显示联网标记 2.0

[UIApplicationsharedApplication].networkActivityIndicatorVisible=YES;

6.在map上显示一个地址

NSString* addressText =@"1 Infinite Loop, Cupertino, CA 95014";

// URL encode the spaces

addressText =  [addressTextstringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];

NSString* urlText = [NSStringstringWithFormat:@"http://maps.google.com/maps?q=%@", addressText];

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:urlText]];

7.发送电子邮件

NSString*recipients =@"mailto:first@example.com?cc=second@example.com,third@example.com&subject=Hello from California!";

NSString*body =@"&body=It is raining in sunny California!";

NSString*email = [NSStringstringWithFormat:@"%@%@", recipients, body];

email = [emailstringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:email]];

8.打电话到一个号码

// Call Google 411

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"tel://8004664411"]];

9.发送短信

// Text to Google SMS

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"sms://466453"]];

10.打开一个网址

// Lanuch any iPhone developers fav site

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"http://itunesconnect.apple.com"]];