ios - 播放和暂停功能

我有一个音板应用程序，可以播放声音并播放音乐，如果您单击按钮，它会暂停，但不会暂停，只会停止音乐。
音乐播放完毕后，按钮保持选中状态。

我的代码是；

 - (IBAction)aint:(id)sender {
UIButton *aint = (UIButton *)sender;

aint.selected = !aint.selected;

if(aint.selected)
{
    // Play
    NSString *path2 = [[NSBundle mainBundle] pathForResource:@"2" ofType:@"mp3"];
    theAudio2 = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path2] error:NULL];
    theAudio2.delegate = self;
    theAudio2.numberOfLoops = 0;
    [theAudio2 play];
    [[NSUserDefaults standardUserDefaults] setObject:@"-" forKey:@"music"];
}
else
{
    // Pause
    [theAudio2 pause];
 }
}

我已经声明了Audio2和AVAudioPlayer。

最佳答案

试试这个，它将按预期工作-

 - (void)viewDidLoad
    {
      [super viewDidLoad];

      NSString *path2 = [[NSBundle mainBundle] pathForResource:@"2" ofType:@"mp3"];
      theAudio2 = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path2] error:NULL];
      theAudio2.delegate = self;
      theAudio2.numberOfLoops = 0;
    }

 - (IBAction)aint:(id)sender
    {
      UIButton *aint = (UIButton *)sender;
      aint.selected = !aint.selected;

      if(aint.selected)
      {
        // Play
        [theAudio2 play];
        [[NSUserDefaults standardUserDefaults] setObject:@"-" forKey:@"music"];
      }
      else
      {
        // Pause
        [theAudio2 pause];
      }
    }

 - (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
    {
       playerBtn.selected = NO;
    }

关于ios - 播放和暂停功能，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/20535921/