关于objective C：iOS为条码扫描器添加哔声

iOS add beep to barcode scanner

我一直在使用来自 infragistics 的带有 iOS 7 (Objective-C) 的扫描条码，它运行良好。我正在尝试在成功完成扫描时添加哔声，但不断收到错误消息。我相信对于比我了解更多的人来说，这很容易解决。

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–(void)loadBeepSound{
// Get the path to the beep.mp3 file and convert it to a NSURL object.
NSString *beepFilePath = [NSString stringWithFormat:@"%@/beep.mp3", [[NSBundle mainBundle] resourcePath]];
NSURL *beepURL = [NSURL URLWithString:beepFilePath];

NSError *error;

// Initialize the audio player object using the NSURL object previously set.
_audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:beepURL error:&error];
if (error) {
// If the audio player cannot be initialized then log a message.
NSLog(@"Could not play beep file.");
NSLog(@"%@", [error localizedDescription]);
NSLog(@"beepFilePath %@", beepFilePath);
}
else{
// If the audio player was successfully initialized then load it in memory.
[_audioPlayer prepareToPlay];
}
}

错误记录为 –

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–Could not play beep file.
–The operation couldna€?t be completed. (OSStatus error –10875.)
–beepFilePath /private/var/mobile/Containers/Bundle/Application/22BB6164–82F8–46E5–B4B6– 4C91BCA2B7E9/ReThink Edu App.app/beep.mp3

因此加载哔声似乎是一个问题，但它位于主捆绑包中，并且目标成员资格框已打勾。也许我只是想以错误的方式解决这个问题！

而不是这个：

1	NSURL *beepURL = [NSURL URLWithString:beepFilePath];

试试这个：

1	NSURL *beepURL = [NSURL fileURLWithPath:beepFilePath];

当您使用 [NSURL URLWithString:beepFilePath]; 时，它只会获取文件夹路径的字符串，例如 Users/***/folder/etc。

所以使用 [NSURL fileURLWithPath:beepFilePath]; 这段代码将完整路径像 file:///Users/***/folder/etc.

工作代码：

1	NSURL *beepURL = [NSURL fileURLWithPath:beepFilePath];

可选方法：

1	NSURL *beepURL = [NSURL URLWithString:[NSString stringWithFormat:@"file:///%@", beepFilePath]];

原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/tech/268621.html

关于objective C：iOS为条码扫描器添加哔声

iOS add beep to barcode scanner

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