Question

我正在开发应用程序，我有一个问题，当我点击按钮然后选择索引歌曲开始，但我想要停止这首歌并想要播放下一首我给的索引，然后两首歌曲开始播放。表示先前连续，下一个也表示。请指导我如何停止上一首歌，然后才开始播放。代码在这里

  - (IBAction)play:(id)sender
{
    [self.audioPlayer stop];
    self.audioPlayer = nil;
    self.audioPlayer.currentTime = 0;
    if(self.audioPlayer.playing ==YES)
    {
        self.audioPlayer.delegate=nil;
        [self.audioPlayer stop];
        self. audioPlayer=nil;
        NSLog(@"plat");
    }

    NSString *path=[[NSBundle mainBundle]pathForResource:sound.text ofType:@"mp3"];
    self.audioPlayer = [[AVAudioPlayer alloc]initWithContentsOfURL:
                        [NSURL fileURLWithPath:path] error:NULL];

    //self.audioPlayer = nil;
    [self.audioPlayer play];
}

Answer 1

确定使用AVQueuePlayer来按顺序播放多个项目。

NSString *secondPath = [[NSBundle mainBundle] pathForResource:@"s1" ofType:@"mp3"];
NSString *firstPath = [[NSBundle mainBundle] pathForResource:@"s2" ofType:@"mov"];


AVPlayerItem *firstVideoItem = [AVPlayerItem playerItemWithURL:[NSURL fileURLWithPath:firstPath]];
AVPlayerItem *secondVideoItem = [AVPlayerItem playerItemWithURL:[NSURL fileURLWithPath:secondPath]];

self.queuePlayer = [AVQueuePlayer queuePlayerWithItems:[NSArray arrayWithObjects:firstVideoItem, secondVideoItem,nil]];
[self.queuePlayer play];

Answer 2

试试这个：

   -(void)playSound
{
     NSString *path=[[NSBundle mainBundle]pathForResource:sound.text ofType:@"mp3"];
        self.audioPlayer = [[AVAudioPlayer alloc]initWithContentsOfURL:
                            [NSURL fileURLWithPath:path] error:NULL];
     [self.audioPlayer play];    
}
    - (IBAction)play:(id)sender
    {
    if (self.audioPlayer.playing == NO) 
    {
     [self playSound]; 
    }
     else
         if (self.audioPlayer.playing == YES) {
             [self.audioPlayer stop];
             [self playSound]; 

        }
    }

如何停止播放歌曲和播放新歌

2 个答案: