AppDelegate的生命周期

//
//  AppDelegate.m
//  4-7
//
//  Created by spare on 16/4/7.
//  Copyright © 2016年 spare. All rights reserved.
//

#import "AppDelegate.h"

@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    NSLog(@"didFinishLaunchingWithOptions");
    NSLog(@"应用程序载入后执行……");
    
    
    
    // Override point for customization after application launch.
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application {
    NSLog(@"applicationWillResignActive");
    NSLog(@"应用程序将要进入非活动状态,应用程序不接受任何消息或事件……");
    
    // 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 throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    NSLog(@"applicationDidBecomeActive");
    NSLog(@"应用程序已经进入活动状态时执行");
    //程序进入活跃状态
    // 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.
}

- (void)applicationDidEnterBackground:(UIApplication *)application {
    NSLog(@"applicationDidEnterBackground");
    NSLog(@"应用程序已经进入后台时调用");
    //快捷键Comand+shift+H
    // 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.
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    NSLog(@"applicationWillEnterForeground");
    NSLog(@"应用程序将要进入前台时调用");
    //进入前台
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}



- (void)applicationWillTerminate:(UIApplication *)application {
    NSLog(@"applicationWillTerminate");
    NSLog(@"应用程序将要退出时调用,通常这是我们保存数数据的最后一个机会");
    //程序退出
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

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