-? (void)applicationWillResignActive:(UIApplication *)application

當(dāng)應(yīng)用將要進(jìn)入非活動(dòng)狀態(tài)執(zhí)行，在此期間，應(yīng)用程序不接收消息或事件，類如來(lái)電話了

-? (void)applicationDidBecomeActive:(UIApplication *)application

說(shuō)是應(yīng)用程序進(jìn)入活動(dòng)狀態(tài)執(zhí)行，這個(gè)剛好跟上面那個(gè)方法相反

- (void)applicationDidEnterBackground:(UIApplication? *)application

當(dāng)程序被推送到后臺(tái)的時(shí)候調(diào)用。所以要設(shè)置后臺(tái)繼續(xù)運(yùn)行，則在這個(gè)函數(shù)里面設(shè)置即可

-? (void)applicationWillEnterForeground:(UIApplication *)application

當(dāng)程序從后臺(tái)將要重新回到前臺(tái)時(shí)候調(diào)用，這個(gè)剛好跟上面的那個(gè)方法相反。

-? (void)applicationWillTerminate:(UIApplication *)application

當(dāng)程序?qū)⒁顺鍪潜徽{(diào)用，通常是用來(lái)保存數(shù)據(jù)和一些退出前的清理工作。這個(gè)需要要設(shè)置UIApplicationExitsOnSuspend的鍵值。

-? (void)applicationDidReceiveMemoryWarning:(UIApplication *)application

iPhone設(shè)備只有有限的內(nèi)存，如果為應(yīng)用程序分配了太多內(nèi)存操作系統(tǒng)會(huì)終止應(yīng)用程序的運(yùn)行，在終止前會(huì)執(zhí)行這個(gè)方法，通?？梢栽谶@里進(jìn)行內(nèi)存清理工作防止程序被終止

- (void)applicationSignificantTimeChange:(UIApplication*)application

說(shuō)明：當(dāng)系統(tǒng)時(shí)間發(fā)生改變時(shí)執(zhí)行

-? (void)applicationDidFinishLaunching:(UIApplication*)application

說(shuō)明：當(dāng)程序載入后執(zhí)行

-??(void)application:(UIApplication)application??willChangeStatusBarFrame:(CGRect)newStatusBarFrame

說(shuō)明：當(dāng)StatusBar框?qū)⒁兓瘯r(shí)執(zhí)行

-??(void)application:(UIApplication*)application?willChangeStatusBarOrientation:

(UIInterfaceOrientation)newStatusBarOrientation

duration:(NSTimeInterval)duration

說(shuō)明：當(dāng)StatusBar框方向?qū)⒁兓瘯r(shí)執(zhí)行

-??(BOOL)application:(UIApplication*)application?handleOpenURL:(NSURL*)url

說(shuō)明：當(dāng)通過url執(zhí)行

-??(void)application:(UIApplication*)application??didChangeStatusBarOrientation:(UIInterfaceOrientation)oldStatusBarOrientation

說(shuō)明：當(dāng)StatusBar框方向變化完成后執(zhí)行

-??(void)application:(UIApplication*)application?didChangeSetStatusBarFrame:(CGRect)oldStatusBarFrame

說(shuō)明：當(dāng)StatusBar框變化完成后執(zhí)行