AVAudio 播放器始终为零

Question

我不确定为什么我的 AVAudioPlayer 总是 nil?

#import <AVFoundation/AVFoundation.h>
@property (nonatomic) AVAudioPlayer *audioPlayer;
@synthesize audioPlayer;

- (void)viewDidLoad {
    [super viewDidLoad];
    // Construct URL to sound file
    NSString *path = [NSString stringWithFormat:@"%@/background-music-aac.caf", [[NSBundle mainBundle] resourcePath]];
    NSURL *soundUrl = [NSURL fileURLWithPath:path];

    // Create audio player object and initialize with URL to sound
    NSError *audioError = nil;
    self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:soundUrl error:&audioError];
    if (audioPlayer == nil) {
        NSLog(@"Error? %@", audioError);
        NSLog(@"AudioPlayer: %@", audioPlayer.description);
    }

我觉得我已经设置好了，但它不起作用，我得到 nil/null audioPlayer.

Answer 1

问题出在 .caf 文件上，感谢 Brandon 的帮助

AVAudio 播放器始终为零

AVAudio player always nil

objective-c

avaudioplayer

ios