在尝试实例化AVAudioPlayer时，NSBundle找到mp3文件而不是m4a

Question

I have a simple app that is supposed to play a audio file. Whenever I load a mp3 file to my NSURL is works fine and the AVAudioPlayer gets to play the song. However, when I change to a m4a file, the NSString path returns nil, like it is not able to find the path to my file, and thus the NSURL is not formed. The m4a file is of course there, in the project. It follows below the code, but I don't think is a code issue. Any ideias? Thanks.

NSString *path = [[NSBundle mainBundle] pathForResource:@"end" ofType:@"m4a"];
NSURL *urlFile = [NSURL fileURLWithPath:path];
NSError *error;
soundPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:urlFile error:&error];
if (error)
{
    NSLog(@"Error in audioPlayer: %@",[error localizedDescription]);
} else {
    soundPlayer.delegate = self;
    [soundPlayer prepareToPlay];
    [soundPlayer play];
}

Answer 1

检查目标的构建阶段，如果您的m4a文件未列在“复制捆绑资源”阶段组下，请添加，然后清除，然后再次运行。