程序加載完畢
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
}
程序失去焦點，即將失活
- (void)applicationWillResignActive:(UIApplication *)application
{
}
程序進入後臺
- (void)applicationDidEnterBackground:(UIApplication *)application
{
}
程序從後臺回到前臺（即將進入前臺）
- (void)applicationWillEnterForeground:(UIApplication *)application
{
}
程序獲取焦點
- (void)applicationDidBecomeActive:(UIApplication *)application
{
}
程序即將退出
- (void)applicationWillTerminate:(UIApplication *)application
{
}