ios voip 推送-倾城孤月

1. 什么是voip推送和普通的ios推送有什么区别呢？
   普通推送分为：远程推送和本地推送，区别网上资料太多了，简单说一下，比如网易新闻，有什么大的新闻会在手机端接收到推送，这个就是远程推送，是把相关信息推送到苹果推送服务器-APNS，太简单了，不说了！

重点说下：voip的重点功能。
就是打视频或者语音电话的时候推送功能，一个典型的应用场景，A用户拨打B用户视频或者语音电话，A拨打，B铃声响起，此时A挂断，B铃声消失，就相当于控制对方手机一样。国外的语音视频电话都是采用voip push,比如whats app，line等语音视频通讯软件。

曾经有人说普通推送可以做到以上功能，我可以明确的给出回复：普通推送是无法做到的，必须用voip push才能做到。

注意事项：
1、证书的制作过程中也需要选中voip认证。

voip_cer.jpg

2、在xcode开发中也需要进行相关的设置，设置如下：

setting_xcode.png

3、引入开发包

push_kit.png

xcode端代码如下：

1、首先注册为voip推送：

-(void)registerVoipNotifications{
    
    PKPushRegistry * voipRegistry = [[PKPushRegistry alloc]initWithQueue:dispatch_get_main_queue()];

    voipRegistry.delegate = self;
    voipRegistry.desiredPushTypes = [NSSet setWithObject:PKPushTypeVoIP];

    UIUserNotificationType types = (UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert); UIUserNotificationSettings * notificationSettings = [UIUserNotificationSettings settingsForTypes:types categories:nil]; [[UIApplication sharedApplication]registerUserNotificationSettings:notificationSettings]; } 

在应用初始化方法中调用：

 [self registerVoipNotifications];

2、获取token，用于发送到服务器端，服务器端发送推送消息时，会发送这个token到APNS服务器，APNS通过这个token定位到手机和对应的应用，进而推送消息。

- (void)pushRegistry:(PKPushRegistry *)registry didUpdatePushCredentials:(PKPushCredentials *)credentials forType:(NSString *)type{
    
    NSString *str = [NSString stringWithFormat:@"%@",credentials.token]; NSString *_tokenStr = [[[str stringByReplacingOccurrencesOfString:@"<" withString:@""] stringByReplacingOccurrencesOfString:@">" withString:@""] stringByReplacingOccurrencesOfString:@" " withString:@""]; NSLog(@"device_token is %@" , _tokenStr); } 

3、下面是最重要的一步：就是对推送过来的消息进行解析，可以在推送的时候设置标记，下面的代码是获取到标志以后，根据标志命令调用不同的方法进行处理，进而实现功能，注意这里接收到消息定义时，如果传过来的命令是call就创建一个本地推送，提示某人正在呼叫你，如果传过来的命令为cancel，就取消命令

- (void)pushRegistry:(PKPushRegistry *)registry didReceiveIncomingPushWithPayload:(PKPushPayload *)payload forType:(NSString *)type{
    
    UIUserNotificationType theType = [UIApplication sharedApplication].currentUserNotificationSettings.types;
    
    if (theType == UIUserNotificationTypeNone) { UIUserNotificationSettings *userNotifySetting = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert categories:nil]; [[UIApplication sharedApplication] registerUserNotificationSettings:userNotifySetting]; } NSDictionary * dic = payload.dictionaryPayload; NSLog(@"dic %@",dic); if ([dic[@"cmd"] isEqualToString:@"call"]) { UILocalNotification *backgroudMsg = [[UILocalNotification alloc] init]; backgroudMsg.alertBody= @"You receive a new call"; backgroudMsg.soundName = @"ring.caf"; backgroudMsg.applicationIconBadgeNumber = [[UIApplication sharedApplication]applicationIconBadgeNumber] + 1; [[UIApplication sharedApplication] presentLocalNotificationNow:backgroudMsg]; }else if(([dic[@"cmd"] isEqualToString:@"cancel"]){ [[UIApplication sharedApplication] cancelAllLocalNotifications]; UILocalNotification * wei = [[UILocalNotification alloc] init]; wei.alertBody= [NSString stringWithFormat:@"%ld 个未接来电",[[UIApplication sharedApplication]applicationIconBadgeNumber]]; wei.applicationIconBadgeNumber = [[UIApplication sharedApplication]applicationIconBadgeNumber]; [[UIApplication sharedApplication] presentLocalNotificationNow:wei]; } } 

4、注意当进入应用时，角标清除：

- (void)applicationDidBecomeActive:(UIApplication *)application {
    
    [UIApplication sharedApplication].applicationIconBadgeNumber = 0;

}

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