应用程序生命周期的备忘 蓝懿教育

应用程序的生命周期

在AppDelegate.m中

1）已经完成运行

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

2）将要失去激活状态

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

3）已经进入后台

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

4）将要进入前台

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

5）已经激活

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

6）将要终止

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

//  AppDelegate.m
//  Day9应用程序生命周期
//
//  Created by Ivan on 15/9/5.
//  Copyright (c) 2015年 Ivan. All rights reserved.
//

#import "AppDelegate.h"

@interface  AppDelegate ()
@end

@implementation AppDelegate

//已经完成运行

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    NSLog(@"已经完成运行");
    return YES;
}
//将要失去激活状态
- (void)applicationWillResignActive:(UIApplication *)application {
     NSLog(@"将要失去激活状态");
    // 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.
}
//已经进入后台
- (void)applicationDidEnterBackground:(UIApplication*)application {
     NSLog(@"已经进入后台");
    // 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
- (void)applicationWillEnterForeground:(UIApplication*)application {
     NSLog(@"将要进入前台");
    // 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.
}
//已经激活
- (void)applicationDidBecomeActive:(UIApplication *)application {
    NSLog(@"已经激活");
    // 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.
}
//将要终止
- (void)applicationWillTerminate:(UIApplication *)application {
     NSLog(@"将要终止");
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}