AudioFileOpenURL在现有文件上返回-43 [英] AudioFileOpenURL returns -43 on an existing file

问题描述

我的应用程序中有一个步骤，用户会反复听到三个语音数字。

I have a step in my application where a user repeatedly hears three spoken digits.

如果我将该步骤运行一段时间（对于某些未定义的 while），我的调试日志将显示以下内容（删除了不相关的日志条目）：

If I leave this step running for a while (for certain undefined values of "while"), my debug logs show this (irrelevant log entries removed):

2010-03-01 13:44:21.283 iPhoneHearChk[1236:207] AudioFileOpenURL returned 0
 (for <file://localhost/var/mobile/Applications/3A28F975-EAD5-4A5B-AFE6-FA1C6EE95732/iPhoneHearChk.app/5b3.ima4>)
2010-03-01 13:44:35.493 iPhoneHearChk[1236:207] AudioFileOpenURL returned 0
 (for <file://localhost/var/mobile/Applications/3A28F975-EAD5-4A5B-AFE6-FA1C6EE95732/iPhoneHearChk.app/5b3.ima4>)
2010-03-01 13:45:17.916 iPhoneHearChk[1236:207] AudioFileOpenURL returned 0
 (for <file://localhost/var/mobile/Applications/3A28F975-EAD5-4A5B-AFE6-FA1C6EE95732/iPhoneHearChk.app/5b3.ima4>)
2010-03-01 13:47:00.408 iPhoneHearChk[1236:207] AudioFileOpenURL returned -43
 (for <file://localhost/var/mobile/Applications/3A28F975-EAD5-4A5B-AFE6-FA1C6EE95732/iPhoneHearChk.app/5b3.ima4>)

根据我的阅读，MacErrors.h将-43定义为fnErr，未找到文件。但是显然文件确实存在，因为我之前已经成功打开了它。

From what I've read, MacErrors.h defines -43 as fnErr, File Not Found. But clearly the file does exist, because I've successfully opened it before. What gives?

我如何打开文件：

NSString *soundFilePath = [[NSBundle mainBundle] pathForResource: name ofType: type];
if (!soundFilePath) { NSLog(@"No path found for sound file %@.%@", name, type); }
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];
rc = AudioFileOpenURL((CFURLRef) fileURL, kAudioFileReadPermission, 0, &file);

其中文件是AudioFileID instvar，名称和类型是NSString *参数。

where file is an AudioFileID instvar and name and type are NSString * parameters.

推荐答案

是否有可能文件句柄用完了？完成文件后，您是否关闭打开的文件？

Is it possible that you are running out of file handles? Do you close the files you open after you are finished with them?

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