ios - 按下 UITableView "cell"时在 DOCUMENTS 中加载音频

Question

我有一个 UITableView 显示文档目录中的 llist f 文件...我希望它在按下时播放文档目录中的音频文件...

它运行没有错误，但按下时不播放音频...

    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fileName = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%d.caf",indexPath.row+1]];
NSURL *audioURL = [NSURL URLWithString:fileName];

NSData *audioData = [NSData dataWithContentsOfURL:audioURL];

NSError *error;

_audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:audioURL error:&error];

    _audioPlayer.delegate = self;
        [_audioPlayer play];
}

Answer 1

改变这一行:

NSURL *audioURL = [NSURL URLWithString:fileName];

为此:

NSURL *audioURL = [NSURL fileURLWithPath:fileName isDirectory:NO];

然后就做:

 if(_audioPlayer == nil)
    {
        _audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:audioURL error:nil];
    }
    else
    {
        _audioPlayer = [self.audioAlert initWithContentsOfURL:audioURL error:nil];
    }