#import "AppDelegate.h"



@interface AppDelegate ()



@end



@implementation AppDelegate



// 当应用程序启动完毕的时候就会调用(系统自动调用)

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

   

    return YES;

}

//当应用程序程序失去焦点的时候调用（系统自动调用）

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

    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.

    // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.

}



//当程序进入后台的时候调用

//一般在这里保存应用程序的数据和状态

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

    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.

    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.

}



//将要进入前台的是时候调用

//一般在该方法中恢复应用程序的数据,以及状态

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

    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.

}



//应用程序获得焦点

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

    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.

}



// 应用程序即将被销毁的时候会调用该方法

// 注意:如果应用程序处于挂起状态的时候无法调用该方法

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

    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.

}





@end

intUIApplicationMain(int argc, char *argv[], NSString *principalClassName, NSString *delegateClassName);