(NSURL *)sound_url中的空格无法播放声音

问题描述

我想播放这样的声音:

#define url(x) [NSURL URLWithString:x]
....

AVAudioPlayer *myFatBeat;
myFatBeat = [[AVAudioPlayer alloc] initWithContentsOfURL:url(@"/Library/Ringtones/Bell% Tower.m4r") error:nil];
[myFatBeat setNumberOfLoops:-1];  
[myFatBeat play];

但是失败.我认为这是由于Bell和Tower之间的空格所致，如果声音名称为Àlarm则可以正常工作.然后，我尝试转义类似Bell\ Tower这样的声音名称，但是在编译时却得到了error: unknown escape sequence: '\040'.

but it fails. I think it's due to the space between Belland Tower, as it works if the sound name is Àlarm. Then, I tried to escape the sound name like this Bell\ Tower, but I get error: unknown escape sequence: '\040' when compiling.

有什么想法吗?

推荐答案

我忘记了这是否是您在NSUrl中执行的操作，但是您可以尝试使用%20代替空格.

I forgot if this is how you do it in an NSUrl, but you can try %20 instead of the space.

myFatBeat = [[AVAudioPlayer alloc]     
initWithContentsOfURL:url(@"/Library/Ringtones/Bell%20Tower.m4r") error:nil];

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