鉴于server稳定的开发难度非常大，小团队不建议自己开发。建议使用稳定的第三方推送方案，如个推，蝴蝶等。

要想使用苹果APNS推送消息，首先要把开发app的xcode所用证书上传到server上，当然你的证书要用的是hot证书或勾选push选项的公布者。普通研发者证书是收不到push消息的。

client设置

开启Remote notifications

须要在Xcode 中改动应用的 Capabilities 开启Remote notifications，请參考下图：



安装证书到服务端

你应该安装SSL证书和私匙到你的provider程序执行的server上。

过程例如以下：

0.安装该证书到mac电脑的钥匙串。

1.打开钥匙串，在左側面板上点击我的证书栏。

2.找到这个SSL证书。展开会看到证书和私匙。

3.我们选中证书和私匙，然后导出为”个人信息交换文件”–即扩展名为p12的文件。

4.providerserver程序最好用Ruby和Perl这类语言。能够方便的处理”个人信息交换文件”里的证书。mac下打开终端输入以下命令以把证书转换为这类语言乐于交流的格式：

openssl pkcs12 -in CertificateName.p12 -out CertificateName.pem -nodes

5.把这pem文件拷到server上并安装到某个适当的位置。

说完服务端了就详细说client吧，首先在AppDelegate.m(AppDelegate.mm)文件里的- (BOOL)application:(UIApplication )application didFinishLaunchingWithOptions:(NSDictionary )launchOptions增加[AppDelegate registerForRemoteNotification];来又一次获取设备相关的token。不要缓存token.

当注销时，本账户在别的设备上登陆时（被踢掉）或者捕获到被拉掉事件时（- (void)applicationWillTerminate:(UIApplication *)application）须要取消推送的注冊，代码如[[UIApplication sharedApplication] unregisterForRemoteNotifications];//用户退出登录后，取消推送的注冊，登录时register。当然退出到登陆页面后登陆成功后还时须要又一次进行推送的注冊。

在didReceiveRemoteNotification能够处理收到的消息，能够仅仅记录到全局变量里临时不操作。也能够播放铃声。震动。弹出对话框。跳转页面等。像这个版本号更新的push消息处理就没有告知用户 if([type isEqualToString:@”psy_needUpgrade”])

{

NSString *url = [page objectForKey:@”downloadUrl”];

if(url != nil)

{

g_needUpgrade = 1;

g_downloadUrl = url;

}

return;

}

以下这段代码是对接收的push消息进行处理。

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler

{

    FLDDLogDebug(@"push userinfo:%@", userInfo);

    NSDictionary *aps = [userInfo objectForKey:@"aps"];

    NSInteger count = [[aps objectForKey:@"badge"] toInt];

    [application setApplicationIconBadgeNumber:count];

    NSString *alert = [aps objectForKey:@"alert"];

    NSDictionary *page = [userInfo objectForKey:@"page"];

    NSString *actionId = [page objectForKey:@"id"];

    NSString *type = [page objectForKey:@"type"];

    NSString *title = [page objectForKey:@"title"];

    NSString *notifyType = [[page objectForKey:@"notifyType"] toString];

    NSString *subType = [[page objectForKey:@"subType"] toString];

    NSString *subId = [[page objectForKey:@"subId"] toString];//app消息相应的订单id

    NSString *phone = [page objectForKey:@"userTel"];

    NSString *userPhone = [User currentUser].phone;

    if (![phone isEqualToString:userPhone]) {

        return;

    }

    if([type isEqualToString:@"psy_needUpgrade"])

    {

        NSString *url = [page objectForKey:@"downloadUrl"];

        if(url != nil)

        {

            g_needUpgrade = 1;

            g_downloadUrl = url;

        }

        return;

    }

    if ([notifyType isEqualToString:@"1"]) {

        type = kFhlappnotify;

    }

    else if ([notifyType isEqualToString:@"2"]){

        type = kFhlordernotify;

    }

    if ([type isEqualToString:kFhlGrab]) {

        //set home refresh tag

        [[NSNotificationCenter defaultCenter] postNotificationName:REFRESH_HOME_NOTIFICATION object:nil];

    }

    if (application.applicationState == UIApplicationStateActive) {

        [application setApplicationIconBadgeNumber:0];

        if ([AppManager boolValueForKey:@"shock"]) {

            AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);

        }

        else {

            [self playAudioWithIndex:type];

        }

        if ([type isEqualToString:kFhllogout]) {

            g_loginStat = LOGIN_STATE_EXIT_LOGIN;

            //            [AppManager saveCurrentOrderRemind];

            [[UIApplication sharedApplication] unregisterForRemoteNotifications];

            [[User currentUser] removeUserInfo];

            [AppManager setUserDefaultsValue:@"" key:@"telephone"];

            [AppManager setUserDefaultsValue:@"" key:@"password"];

            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil

                                                                message:alert

                                                               delegate:self

                                                      cancelButtonTitle:@"确定"

                                                      otherButtonTitles:nil, nil];

            alertView.tag = 1005;

            [alertView show];

        }

        else if ([type isEqualToString:kFhlGrab]) {

            //set home refresh tag

            //            [AppManager setUserBoolValue:YES key:@"NeedRefreshHome"];

        }

        else if ([type isEqualToString:kFhlSend] || [type isEqualToString:kFhlReceived]) {

            //            Order *order = [[Order alloc] init];

            //            order.id = actionId;

            //            [[NSNotificationCenter defaultCenter] postNotificationName:REFRESH_ORDER_NOTIFICATION object:nil userInfo:@{@"Order" : order, @"Option" : @(3)}];

        }

        else if ([type isEqualToString:kFhlBeAppoint]) {

            Order *order = [[Order alloc] init];

            order.id = subId;

            [[NSNotificationCenter defaultCenter] postNotificationName:REFRESH_ORDER_NOTIFICATION object:nil userInfo:@{@"Order" : order, @"Option" : @(3)}];

        }

        else {

            if ([subType isEqualToString:kFhlSubClosed] || [subType isEqualToString:kFhlSubRejected]) {

                Order *order = [[Order alloc] init];

                order.id = subId;

                if ([subType isEqualToString:kFhlSubRejected]) {

                    order.state = @"50";

                }

                [[NSNotificationCenter defaultCenter] postNotificationName:REFRESH_ORDER_NOTIFICATION object:nil userInfo:@{@"Order" : order, @"Option" : @(3)}];

            }

            if ([type isEqualToString:kFhlcancel]) {

                Order *order = [[Order alloc] init];

                order.id = actionId;

                [[NSNotificationCenter defaultCenter] postNotificationName:REFRESH_ORDER_NOTIFICATION object:nil userInfo:@{@"Order" : order, @"Option" : @(4)}];

            }

            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title

                                                                message:alert

                                                               delegate:self

                                                      cancelButtonTitle:@"忽略"

                                                      otherButtonTitles:@"进入", nil];

            if (type.length > 0 && actionId.length > 0) {

                objc_setAssociatedObject(alertView, &AlertAssociatedKey,@{@"type" : type, @"actionId" : actionId}, OBJC_ASSOCIATION_RETAIN_NONATOMIC);

            }

            [alertView show];

        }

    }

    else if (application.applicationState == UIApplicationStateInactive){

        [self pushViewControllerWithType:type actionId:actionId];

    }

}

以下这断代码就是详细的推送的注冊：

“`

+ (void)registerForRemoteNotification {

FLDDLogDebug(@"*\n*\n*\nregisterForRemoteNotification\n*\n*\n*\n");

if (IOS8_OR_LATER) {

    UIUserNotificationType types = UIUserNotificationTypeSound | UIUserNotificationTypeBadge | UIUserNotificationTypeAlert | UIRemoteNotificationTypeNewsstandContentAvailability;

    UIUserNotificationSettings *notificationSettings = [UIUserNotificationSettings settingsForTypes:types categories:nil];

    [[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings];

} else {

    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeNewsstandContentAvailability)];

}

}