一殃恒、掛起
當(dāng)有電話進(jìn)來(lái)或者鎖屏，這時(shí)你的應(yīng)用程會(huì)掛起辱揭，在這時(shí)离唐，UIApplicationDelegate委托會(huì)收到通知，調(diào)用 applicationWillResignActive 方法问窃，你可以重寫這個(gè)方法亥鬓，做掛起前的工作，比如關(guān)閉網(wǎng)絡(luò)域庇，保存數(shù)據(jù)贮竟。
C代碼? 收藏代碼
- (void)applicationWillResignActive:(UIApplication*)application{
}
當(dāng)你的程序被掛起后他不會(huì)在后臺(tái)運(yùn)行。
二较剃、復(fù)原
當(dāng)程序復(fù)原時(shí)咕别，另一個(gè)名為 applicationDidBecomeActive 委托方法會(huì)被調(diào)用，在此你可以通過(guò)之前掛起前保存的數(shù)據(jù)來(lái)恢復(fù)你的應(yīng)用程序：
C代碼? 收藏代碼
- (void)applicationDidBecomeActive:(UIApplication*)application{
}
注意：應(yīng)用程序在啟動(dòng)時(shí)写穴，在調(diào)用了 applicationDidFinishLaunching 方法之后也會(huì)調(diào)用 applicationDidBecomeActive 方法惰拱，所以你要確保你的代碼能夠分清復(fù)原與啟動(dòng)，避免出現(xiàn)邏輯上的bug啊送。
三偿短、終止
當(dāng)用戶按下按鈕，或者關(guān)機(jī)馋没，程序都會(huì)被終止昔逗。當(dāng)一個(gè)程序?qū)⒁＝K止時(shí)會(huì)調(diào)用 applicationWillTerminate 方法。但是如果長(zhǎng)主按鈕強(qiáng)制退出篷朵，則不會(huì)調(diào)用該方法勾怒。這個(gè)方法該執(zhí)行剩下的清理工作，比如所有的連接都能正常關(guān)閉声旺，并在程序退出前執(zhí)行任何其他的必要的工作：
C代碼? 收藏代碼
- (void)applicationWillTerminate:(UIApplication*)application{
}
來(lái)源： http://blog.csdn.NET/iukey/article/details/7311115
Java代碼? 程序開(kāi)始 !"); return YES; } - (void)applicationWillResignActive:(UIApplication *)application { NSLog(@"\n ===> 程序暫行 !"); } - (void)applicationDidEnterBackground:(UIApplication *)application { NSLog(@"\n ===> 程序進(jìn)入后臺(tái) !"); } - (void)applicationWillEnterForeground:(UIApplication *)application { NSLog(@"\n ===> 程序進(jìn)入前臺(tái) !"); } - (void)applicationDidBecomeActive:(UIApplication *)application { NSLog(@"\n ===> 程序重新激活 !"); } - (void)applicationWillTerminate:(UIApplication *)application { NSLog(@"\n ===> 程序意外暫行 !"); UIDevice *device = [UIDevice currentDevice]; }" quality="high" allowscriptaccess="always" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer"> 收藏代碼
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Override point for customization after application launch.
NSLog(@"\n ===> 程序開(kāi)始 !");
return YES;
}
- (void)applicationWillResignActive:(UIApplication *)application
{
NSLog(@"\n ===> 程序暫行 !");
}
- (void)applicationDidEnterBackground:(UIApplication *)application
{
NSLog(@"\n ===> 程序進(jìn)入后臺(tái) !");
}
- (void)applicationWillEnterForeground:(UIApplication *)application
{
NSLog(@"\n ===> 程序進(jìn)入前臺(tái) !");
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
NSLog(@"\n ===> 程序重新激活 !");
}
- (void)applicationWillTerminate:(UIApplication *)application
{
NSLog(@"\n ===> 程序意外暫行 !");
UIDevice *device = [UIDevice currentDevice];
}
首次運(yùn)行：
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
- (void)applicationDidBecomeActive:(UIApplication *)application
首次關(guān)閉（home）：
- (void)applicationWillResignActive:(UIApplication *)application
- (void)applicationDidEnterBackground:(UIApplication *)application
再次運(yùn)行：
- (void)applicationWillEnterForeground:(UIApplication *)application
- (void)applicationDidBecomeActive:(UIApplication *)application
再次關(guān)閉：
- (void)applicationWillResignActive:(UIApplication *)application
- (void)applicationDidEnterBackground:(UIApplication *)application
