首先，在AppDelegate.m 中：
1，注册通知
//[objc] view plaincopyprint?在CODE上查看代码片派生到我的代码片- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. ViewController *mainCtrl=[[ViewController alloc] init]; self.window.rootViewController=mainCtrl; //注册通知 if ([UIDevice currentDevice].systemVersion.doubleValue<8.0) { [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeBadge)]; } else { [[UIApplication sharedApplication] registerForRemoteNotifications]; [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge|UIUserNotificationTypeSound|UIUserNotificationTypeAlert categories:nil]]; } //判断是否由远程消息通知触发应用程序启动 if (launchOptions) { //获取应用程序消息通知标记数（即小红圈中的数字） NSInteger badge = [UIApplication sharedApplication].applicationIconBadgeNumber; if (badge>0) { //如果应用程序消息通知标记数（即小红圈中的数字）大于0，清除标记。 badge--; //清除标记。清除小红圈中数字，小红圈中数字为0，小红圈才会消除。 [UIApplication sharedApplication].applicationIconBadgeNumber = badge; NSDictionary *pushInfo = [launchOptions objectForKey:@"UIApplicationLaunchOptionsRemoteNotificationKey"]; //获取推送详情 NSString *pushString = [NSString stringWithFormat:@"%@",[pushInfo objectForKey:@"aps"]]; UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"finish Loaunch" message:pushString delegate:nil cancelButtonTitle:@"cancel" otherButtonTitles:nil, nil nil]; [alert show]; } } return YES; 2，注册通知后，获取device token
- (void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken { NSString *token = [NSString stringWithFormat:@"%@", deviceToken]; NSLog(@"My token is:%@", token); //这里应将device token发送到服务器端 } - (void)application:(UIApplication *)app didFailToRegisterForRemoteNotificationsWithError:(NSError *)error { NSString *error_str = [NSString stringWithFormat: @"%@", error]; NSLog(@"Failed to get token, error:%@", error_str); } 3，接收推送通知
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo { [UIApplication sharedApplication].applicationIconBadgeNumber=0; for (id key in userInfo) { NSLog(@"key: %@, value: %@", key, [userInfo objectForKey:key]); } /* eg. key: aps, value: { alert = "\U8fd9\U662f\U4e00\U6761\U6d4b\U8bd5\U4fe1\U606f"; badge = 1; sound = default; } */ UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"remote notification" message:userInfo[@"aps"][@"alert"] delegate:nil cancelButtonTitle:@"cancel" otherButtonTitles:nil, nil nil]; [alert show]; } 注意：app 前台运行时，会调用 remote notification；app后台运行时，点击提醒框，会调用remote notification，点击app 图标，不调用remote notification，没反应；app 没有运行时，点击提醒框，finishLaunching 中，launchOptions 传参，点击app 图标，launchOptions 不传参，不调用remote notification。