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我目前正在开发一个支持录音的游戏项目。该程序基于 WiEngine ，一种类似于 cocos2d-x 的游戏引擎。

事情就是这样，我尝试了很多方法，但是每次我调用 [myRecorder Record] 时它总是返回 NO。然后我明确地调用了 PrepareRecord ，它也返回 No 。

这是我如何初始化记录器的代码

- (void)initRecorder
{
    if(self.myRecoder!=nil)
    {
        [self.myRecoder release];
        self.myRecoder=nil;
    }


    NSDictionary *myRecorderParam = [[NSDictionary alloc]initWithObjectsAndKeys:
                                     [NSNumber numberWithFloat:44100.0],AVSampleRateKey,
                                     [NSNumber numberWithInt:kAudioFormatLinearPCM],AVFormatIDKey,
                                     [NSNumber numberWithInt:16],AVLinearPCMBitDepthKey,
                                     [NSNumber numberWithInt:1],AVNumberOfChannelsKey,
                                     [NSNumber numberWithInt:AVAudioQualityMedium],AVEncoderAudioQualityKey,
                                     nil];

    NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString *DocumentPath = [pathArray objectAtIndex:0];
    DocumentPath = [DocumentPath stringByAppendingString:@"/luyin.wav"];

    self.myRecoder = [[AVAudioRecorder alloc]initWithURL:[NSURL URLWithString:DocumentPath]
                                                settings:myRecorderParam
                                                   error:nil];


    [self.myRecoder setDelegate:self];

}

我像这样打电话给记录

- (void)beginRecord
{
    NSLog(@"begin record");

//    AVAudioSession *audioSession = [AVAudioSession sharedInstance];
//    NSError *err = nil;
//    [audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&err];
//    if(err){
//        NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
//        return;
//    }
//    err = nil;
//    [audioSession setActive:YES error:&err];
//    if(err){
//        NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
//        return;
//    }

    if(self.myRecoder==nil)
    {
        NSLog(@"recoder null");
    }

    BOOL resultPre = [[self myRecoder] prepareToRecord];
    if(resultPre)
    {
        NSLog(@" record pre yes ");
    }
    else
    {
        NSLog(@" record pre no ");
    }

    BOOL result = [[self myRecoder] record];
    if(result)
    {
        NSLog(@" record yes ");
    }
    else
    {
        NSLog(@" record no ");
    }
}

根据 NSLogs ，我确定初始化似乎没有失败。

我也尝试初始化 AudioSession ，但它也不起作用

请帮忙

4

1 回答 1

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是 AVAudioRecorder 吗？

AVAudioPlayer 用于播放记录

像这样：

NSMutableDictionary* recordSetting = [[NSMutableDictionary alloc] init];

[recordSetting setValue :[NSNumber numberWithInt:kAudioFormatAppleIMA4] forKey:AVFormatIDKey];

[recordSetting setValue:[NSNumber numberWithFloat:[freq.text floatValue]] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: [value.text intValue]] forKey:AVNumberOfChannelsKey];

recordedTmpFile = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent: [NSString stringWithFormat:@"%.0f.%@", [NSDate timeIntervalSinceReferenceDate] * 1000.0, @"caf"]]];
NSLog(@"使用文件调用：%@",recordedTmpFile);
录音机 = [[ AVAudioRecorder alloc] initWithURL:recordedTmpFile 设置：recordSetting 错误：&error];

于 2013-07-29T03:26:46.547 回答