application 几个方法

1，- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

2，- (void)applicationWillResignActive:(UIApplication *)application（意外中断）

3，- (void)applicationDidEnterBackground:(UIApplication *)application（home键）

4，- (void)applicationWillEnterForeground:(UIApplication *)application（启动应用）

5，- (void)applicationDidBecomeActive:(UIApplication *)application（活动状态）

6,- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification NS_AVAILABLE_IOS(4_0);本地通知

7,- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo NS_AVAILABLE_IOS(3_0);远程通知

8，- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken NS_AVAILABLE_IOS(3_0);注册通知，设备id