add在聊天会话时，新消息有语音提示

Author: guangyao

ios/RNNeteaseIm/RNNeteaseIm/ConversationViewController.m

@@ -26,6 +26,7 @@ @interface ConversationViewController ()<NIMMediaManagerDelegate,NIMMediaManager
     NSMutableArray *_sessionArr;
 
 }
+@property (nonatomic,strong) AVAudioPlayer *player; //播放提示音
 
 @end
 
@@ -34,6 +35,7 @@ @implementation ConversationViewController
 - (void)viewDidLoad {
     [super viewDidLoad];
     // Do any additional setup after loading the view.
+    
 }
 
 +(instancetype)initWithConversationViewController{
@@ -46,6 +48,15 @@ +(instancetype)initWithConversationViewController{
     return conVC;
 }
 
+- (instancetype)init {
+    self = [super init];
+    if(self) {
+        NSURL *url = [[NSBundle mainBundle] URLForResource:@"message" withExtension:@"wav"];
+        _player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
+    }
+    return self;
+}
+
 -(void)startSession:(NSString *)sessionID withType:(NSString *)type{
     _sessionID = sessionID;
     _type = type;
@@ -509,8 +520,10 @@ - (void)onRecvMessages:(NSArray *)messages
                                                   completion:nil];
         //标记已读消息
         [[NIMSDK sharedSDK].conversationManager markAllMessagesReadInSession:_session];
+        [self.player stop];
+        [[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryAmbient error:nil];
+        [self.player play];
     }
-    
 }
 
 

ios/RNNeteaseIm/RNNeteaseIm/RNNotificationCenter.m

@@ -81,7 +81,8 @@ - (void)playMessageAudioTip
 
 - (void)checkMessageAt:(NSArray *)messages
 {
-   }
+   
+}
 
 #pragma mark - NIMSystemNotificationManagerDelegate
 - (void)onReceiveCustomSystemNotification:(NIMCustomSystemNotification *)notification{//接收自定义通知