使用多点连接收到消息时如何发出声音通知？

Posted 2023-03-11

【中文标题】使用多点连接收到消息时如何发出声音通知？

【英文标题】：How to make sound notification when message receives using multipeer connectivity?

【发布时间】：2016-03-09 06:56:44

【问题描述】：

我正在制作一个蓝牙聊天应用程序，其中我正在使用多点连接框架，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

我在didReceiveData 中编写此代码以在收到数据时通知声音，但它不工作我正在发送消息但没有发出任何声音通知。 请帮助我，我从过去 10 天开始就陷入了这个问题。 谢谢

【参考方案1】：

试试这个：

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

【讨论】：

@AayushKatiyar 如果可行，您可以检查我的答案是否有效吗？

【参考方案2】：

您必须在有效负载中传递您的声音文件名，否则 default.mp3 为默认通知音。