问iOS端 为什么TAIOralEvaluationDelegate的代理方法没有调用？

#pragma mark - oral evaluation delegate
- (void)oralEvaluation:(TAIOralEvaluation *)oralEvaluation onEvaluateData:(TAIOralEvaluationData *)data result:(TAIOralEvaluationRet *)result error:(TAIError *)error
{
    if(error.code != TAIErrCode_Succ){
       [SilenceHUDUtil showError:@"录制失败！"];
        self.isRecording = NO;
    }
    
//    NSFileHandle *handle = [NSFileHandle fileHandleForWritingAtPath:self.filePath];
//    [handle seekToEndOfFile];
//    [handle writeData:data.audio];
    NSLog(@"%s",__func__);
    NSLog(@"oralEvaluation:datasize:%lu seq:%ld, end:%ld, error:%@, ret:%@",(unsigned long)data.audio.length,(long)data.seqId, (long)data.bEnd, error, result);
    if(data.bEnd){
        NSLog(@"结果%@",result);
    }
}

-(void)beginRecordWithFileName:(NSString *)fileName andTestString:(NSString *)testString{
    self.fileName = fileName;
   TAIOralEvaluationParam* param = [[TAIOralEvaluationParam alloc] init];
    param.sessionId = @((int)[[NSDate date] timeIntervalSince1970]).stringValue;
    param.appId = [PrivateInfo shareInstance].appId;
    param.soeAppId = [PrivateInfo shareInstance].soeAppId;
    param.secretId = [PrivateInfo shareInstance].secretId;
    param.secretKey = [PrivateInfo shareInstance].secretKey;
    param.workMode = TAIOralEvaluationWorkMode_Stream;
    param.evalMode = TAIOralEvaluationEvalMode_Paragraph;
    param.serverType = TAIOralEvaluationServerType_English;
    param.scoreCoeff = 3;
    param.fileType = TAIOralEvaluationFileType_Mp3;
    param.storageMode = TAIOralEvaluationStorageMode_Enable;
    param.textMode = TAIOralEvaluationTextMode_Noraml;
    param.retryTimes = 5;
    param.refText = @"hello hello hello hello hello hello hello hello hello hello";
    param.timeout = 30;
    
    NSLog(@"测试文本：%@",testString);
    NSString *path = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
    path = [path stringByAppendingPathComponent:@"TencentSeo"];
    self.filePath = [path stringByAppendingPathComponent:self.fileName];
    if([[NSFileManager defaultManager] fileExistsAtPath:path] == false){
        [[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
    }else if([[NSFileManager defaultManager] fileExistsAtPath:self.filePath] == false){
      BOOL isCreatFileOK = [[NSFileManager defaultManager] createFileAtPath:self.filePath contents:nil attributes:nil];
        NSLog(@"创建文件%@",isCreatFileOK?@"成功":@"失败");
    }
    
    [self.oralEvaluation setFragSize:1024.0];
    [self.oralEvaluation startRecordAndEvaluation:self.param callback:^(TAIError *error) {
        if(error.code == TAIErrCode_Succ){
            self.isRecording = YES;
        }
//        [ws setResponse:[NSString stringWithFormat:@"startRecordAndEvaluation:%@", error]];
        NSLog(@"startRecordAndEvaluation:%@",error);
    }];
}