Ios 如何在使用多电话连接接收消息时发出声音通知？

我正在制作一个蓝牙聊天应用程序，其中我使用的是multipeer连接框架，我必须使用声音通知，并且消息将显示通知-

#import "MCManager.h"
#include <AudioToolbox/AudioToolbox.h>
#import "AppDelegate.h"

@implementation MCManager
-(id)init{
    self = [super init];

    if (self) {
        _peerID = nil;
        _session = nil;
        _browser = nil;
        _advertiser = nil;
    }

    return self;
}


#pragma mark - Public method implementation

-(void)setupPeerAndSessionWithDisplayName:(NSString *)displayName
{
    _peerID = [[MCPeerID alloc] initWithDisplayName:displayName];

    _session = [[MCSession alloc] initWithPeer:_peerID];
    _session.delegate = self;
}


-(void)setupMCBrowser{
    _browser = [[MCBrowserViewController alloc] initWithServiceType:@"chat-files" session:_session];
}


-(void)advertiseSelf:(BOOL)shouldAdvertise
{
    if (shouldAdvertise)
    {
        _advertiser = [[MCAdvertiserAssistant alloc] initWithServiceType:@"chat-files"
                                                           discoveryInfo:nil
                                                                 session:_session];
        [_advertiser start];
    }
    else
    {
        [_advertiser stop];
        _advertiser = nil;
    }
}


#pragma mark - MCSession Delegate method implementation


-(void)session:(MCSession *)session peer:(MCPeerID *)peerID didChangeState:(MCSessionState)state{
    NSDictionary *dict = @{@"peerID": peerID,
                           @"state" : [NSNumber numberWithInt:state]
                           };

    [[NSNotificationCenter defaultCenter] postNotificationName:@"MCDidChangeStateNotification"
                                                        object:nil
                                                      userInfo:dict];
}


-(void)session:(MCSession *)session didReceiveData:(NSData *)data fromPeer:(MCPeerID *)peerID{
    NSDictionary *dict = @{@"data": data,
                           @"peerID": peerID
                           };

    [[NSNotificationCenter defaultCenter] postNotificationName:@"MCDidReceiveDataNotification"
                                                        object:nil
                                                      userInfo:dict];

        SystemSoundID soundID;
    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef ref = CFBundleCopyResourceURL(mainBundle, (CFStringRef)@"Voicemail.wav", NULL, NULL);
    AudioServicesCreateSystemSoundID(ref, &soundID);
    AudioServicesPlaySystemSound(soundID);
}


-(void)session:(MCSession *)session didStartReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID withProgress:(NSProgress *)progress{

    NSDictionary *dict = @{@"resourceName"  :   resourceName,
                           @"peerID"        :   peerID,
                           @"progress"      :   progress
                           };

    [[NSNotificationCenter defaultCenter] postNotificationName:@"MCDidStartReceivingResourceNotification"
                                                        object:nil
                                                      userInfo:dict];

    dispatch_async(dispatch_get_main_queue(), ^{
        [progress addObserver:self
                   forKeyPath:@"fractionCompleted"
                      options:NSKeyValueObservingOptionNew
                      context:nil];
    });
}


-(void)session:(MCSession *)session didFinishReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID atURL:(NSURL *)localURL withError:(NSError *)error{

    NSDictionary *dict = @{@"resourceName"  :   resourceName,
                           @"peerID"        :   peerID,
                           @"localURL"      :   localURL
                           };

    [[NSNotificationCenter defaultCenter] postNotificationName:@"didFinishReceivingResourceNotification"
                                                        object:nil
                                                      userInfo:dict];

}


-(void)session:(MCSession *)session didReceiveStream:(NSInputStream *)stream withName:(NSString *)streamName fromPeer:(MCPeerID *)peerID
{

}


-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
    [[NSNotificationCenter defaultCenter] postNotificationName:@"MCReceivingProgressNotification"
                                                        object:nil
                                                      userInfo:@{@"progress": (NSProgress *)object}];
}

@end

#导入“MCManager.h”
#包括
#导入“AppDelegate.h”
@实现MCManager
-（id）init{
self=[super init]；
如果（自我）{
_皮里德=零；
_会话=零；
_浏览器=零；
_广告客户=零；
}
回归自我；
}
#pragma标记-公共方法实现
-（void）setupPeerAndSessionWithDisplayName:（NSString*）displayName
{
_peerID=[[McPeerind alloc]initWithDisplayName:displayName]；
_session=[[MCSession alloc]initWithPeer:_peerID]；
_session.delegate=self；
}
-（无效）设置浏览器{
_browser=[[MCBrowserViewController alloc]InitWithService类型：@“聊天文件”会话：_会话]；
}
-应该做广告吗
{
如果（应该做广告）
{
_广告客户=[[McAdvertiseAssistant alloc]InitWithService类型：@“聊天文件”
发现信息：无
会议：_会议]；
[_广告商开始]；
}
其他的
{
[广告商停止]；
_广告客户=零；
}
}
#pragma标记-MCSession委托方法实现
-（void）session:（MCSession*）session peer:（mcpeirid*）peerID didChangeState:（MCSessionState）state{
NSDictionary*dict=@{@“peerID”：peerID，
@“状态”：[NSNumber numberWithInt:state]
};
[[NSNotificationCenter defaultCenter]postNotificationName:@“MCDidChangeStateNotification”
对象：无
用户信息：dict]；
}
-（void）session:（MCSession*）session didReceiveData:（NSData*）来自peer的数据：（MCPERID*）peerID{
NSDictionary*dict=@{@“数据”：数据，
@“皮瑞德”：皮瑞德
};
[[NSNotificationCenter defaultCenter]postNotificationName:@“MCDidReceiveDataNotification”
对象：无
用户信息：dict]；
系统声音ID；
CFBundleRef mainBundle=CFBundleGetMainBundle（）；
CFURLRef-ref=CFBundleCopyResourceURL（mainBundle，（CFStringRef）@“Voicemail.wav”，NULL，NULL）；
AudioServicesCreateSystemSoundID（参考和soundID）；
AudioServicesPlaySystemSound（soundID）；
}
-（void）session:（MCSession*）session didStartReceivingResourceWithName:（NSString*）resourceName fromPeer:（mcpeirId*）peerID withProgress:（NSProgress*）progress{
NSDictionary*dict=@{@“resourceName”：resourceName，
@“peerID”：peerID，
@“进展”：进展
};
[[NSNotificationCenter defaultCenter]postNotificationName:@“MCDidStartReceivingResourceNotification”
对象：无
用户信息：dict]；
dispatch\u async（dispatch\u get\u main\u queue（）^{
[进展情况：自我评价]
forKeyPath:@“fractionCompleted”
选项：NSKeyValueObservingOptionNew
上下文：无]；
});
}
-（void）session:（MCSession*）session未完成接收ResourceWithName:（NSString*）来自对等方的resourceName:（mcpeirId*）peerID atURL:（NSURL*）本地URL withError:（NSError*）错误{
NSDictionary*dict=@{@“resourceName”：resourceName，
@“peerID”：peerID，
@“localURL”：localURL
};
[[NSNotificationCenter defaultCenter]postNotificationName:@“didFinishReceivingResourceNotification”
对象：无
用户信息：dict]；
}
-（void）session:（MCSession*）session didReceiveStream:（NSInputStream*）名为：（NSString*）streamName fromPeer:（mcPeerind*）peerID的流
{
}
-（void）observeValueForKeyPath:（NSString*）对象的键路径：（id）对象更改：（NSDictionary*）更改上下文：（void*）上下文
{
[[NSNotificationCenter defaultCenter]postNotificationName:@“MCReceivingProgressNotification”
对象：无
用户信息：@{@“进度”：（NSProgress*）对象}]；
}
@结束

我在

didReceiveData

中编写此代码，以便在收到数据时通知声音，但它不起作用。我正在发送消息，但没有发出任何声音通知。 请帮帮我，我从过去10天就陷入了这个问题。 谢谢

试试这个：

NSString *soundPath = [[NSBundle mainBundle] pathForResource:@"Voicemail" ofType:@"wav"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath: soundPath], &soundID);
AudioServicesPlaySystemSound (soundID);

---

您必须在有效负载中传递声音文件名，否则默认通知音为default.mp3。

@AayushKatiyar如果有效，您能检查我的答案是否有效吗？