AudioFileOpenURL 对现有文件返回 -43
我的应用程序中有一个步骤，用户反复听到三个口头数字。
如果我让此步骤运行一段时间（对于某些未定义的“while”值），我的调试日志会显示以下内容（删除了不相关的日志条目）：
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，File Not成立。但显然该文件确实存在，因为我之前已经成功打开过它。什么给？
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 file 是 AudioFileID instvar，名称和类型是 NSString * 参数。
I have a step in my application where a user repeatedly hears three spoken digits.
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>)
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?
How I open the file:
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);
where file is an AudioFileID instvar and name and type are NSString * parameters.
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您是否可能用完文件句柄？使用完打开的文件后，您会关闭它们吗？
Is it possible that you are running out of file handles? Do you close the files you open after you are finished with them?