在 iOS 中以编程方式使按钮播放声音

Posted 2023-02-25

【中文标题】在 iOS 中以编程方式使按钮播放声音

【英文标题】：Making a button programmatically play a sound in iOS

【发布时间】：2014-03-05 06:55:02

【问题描述】：

我想创建一个按钮，让它在被触摸时播放声音。到目前为止，我可以制作按钮，但我无法让它播放声音。这是我所拥有的：

//loads wav file into SoundID
NSURL *buttonURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"medic_taunts01" ofType:@"wav"]];
AudioservicesCreateSystemSoundID((__bridge CFURLRef)buttonURL, &SoundID);

//creates button
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setTitle:@"Show View" forState:UIControlStateNormal];
button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
[scrollview addSubview:button]

//this line is the problem
[button addTarget:self  action:@selector(AudioServicesPlaySystemSound((SoundID)) forControlEvents:UIControlEventTouchDown];

由于某种原因，xcode 不允许我直接从按钮单击中播放声音。如何让触摸按钮播放 SoundID？

【问题讨论】：

如果您已解决此问题，请接受正确答案以帮助遇到相同问题的其他人。

@BhushanUparkar 同上

【参考方案1】：

您的按钮操作方法必须具有以下签名：

-(void)buttonActionMethod:(id)inSender

这意味着您不能直接调用系统方法。对于您正在尝试做的事情，我建议您使用这种方法：

//loads wav file into SoundID
NSURL *buttonURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"medic_taunts01" ofType:@"wav"]];
SystemSoundID soundID
AudioServicesCreateSystemSoundID((__bridge CFURLRef)buttonURL, &soundID );
self.SoundID = soundID;

//creates button
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setTitle:@"Show View" forState:UIControlStateNormal];
button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
[scrollview addSubview:button]

//this line is the problem
[button addTarget:self  action:@selector(playButtonSound:) forControlEvents:UIControlEventTouchDown];

注意将SoundID 转换为属性（我相信您知道如何制作这些）。然后定义这个方法：

-(void)playButtonSound:(id)inSender 
    AudioServicesPlaySystemSound(self.SoundID);

当然，如果您有多个按钮，每个按钮都有不同的声音，您需要在此处通过将声音 ID 映射到按钮来获得更多创意。

【讨论】：

哎呀！您在我创建答案时发布了答案:)

【参考方案2】：

这是您编辑后的答案。希望这会有所帮助：

-(void)viewDidLoad 

      NSURL *buttonURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"medic_taunts01" ofType:@"wav"]];
      AudioServicesCreateSystemSoundID((__bridge CFURLRef)buttonURL, &SoundID);

      //creates button
      UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
      [button setTitle:@"Show View" forState:UIControlStateNormal];
      button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
      [scrollview addSubview:button]

      //this line was causing problem
      [button addTarget:self action:@selector(playSound:) forControlEvents:UIControlEventTouchDown];





-(void)playSound:(id)sender

       AudioServicesPlaySystemSound((SoundID)