Question

我在设置currentTime属性时遇到了使用AVAudioPlayer循环单个音轨的问题。

如果我不对currentTime属性进行任何操作，则循环是正确的，并且它播放音频文件的次数与numberOfLoops中给出的次数相同，但是如果我对currentTime进行操作通过递减1设置音频文件的持续时间音频文件始终开始偶数numberOfLoops完成。

请检查以下代码。

@interface AVAudioPlayerInterface ()<AVAudioPlayerDelegate>
        @property (strong,nonatomic) AVAudioPlayer *musicPlayer;
@end

@implementation AVAudioPlayerInterface
-(instancetype)init
{
    self = [super init];
    if(self)
    {
        [self downloadAudioContent];
    }
    return self;
}
-(void) downloadAudioContent
{
    NSString *musicFilePath = [[NSBundle mainBundle] pathForResource:@"aleale" ofType:@"mp3"];
    NSURL *completeUrl = [NSURL fileURLWithPath:musicFilePath];
    NSError *err=nil;
    self.musicPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:completeUrl fileTypeHint:AVFileTypeMPEGLayer3 error:&err];
 }
-(void)playAtSpecifiedTime:(NSUInteger)pointOfPlayTime
{
    self.musicPlayer.currentTime = pointOfPlayTime;
}
-(void)play
{
    [self.musicPlayer play];
}
-(void)playLoop:(NSUInteger)numberOfTimes
{
    NSLog(@"Number of times to loop %lu",numberOfTimes);
    self.musicPlayer.numberOfLoops=numberOfTimes;
}
@end
@interface ViewController ()
@property ( strong, nonatomic)  AVAudioPlayerInterface *audioPlayer;
@end
@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];
    self.audioPlayer = [[AVAudioPlayerInterface alloc]init];
    self.currentVolume = 0.5;
    NSLog(@"View loaded");
    // Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)playSong:(id)sender {
// Following is sequense i am executing
    [self.audioRecord play];
    [self.audioRecord playLoop:1];
    [self.audioRecord playAtSpecifiedTime:200];//my audio file is 201 seconds so ending-1
    [self.audioRecord playAtSpecifiedTime:200];
    //At this point the audio file is still playing irrespective of number of calls on [self.audioRecord playAtSpecifiedTime:200];
}

我该如何解决这个问题？

设置currentTime属性时，AVAudioPlayer numberOfLoops无法按预期工作

0 个答案: