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我正在尝试编写一个小应用程序来学习一些 iOS 开发的基础知识，如果这是基础知识，请原谅我。我查看了很多线程，但我认为我有几个特定于这个应用程序的问题。

  1. 当按下按钮时，我已经看到了几种不同的播放音频的方法。一个涉及“CFBundleRef”（如何播放 iPhone 点击声音？）和另一个“AVAudioPlayer”（播放音频 iOS Objective-C）。我如何知道使用哪个以及何时适当使用每个？

  2. 我目前使用第一个选项使音频正常工作，但我似乎无法弄清楚当按下另一个按钮时如何让声音停止。我怎样才能做到这一点？

  3. 除了我所做的之外，有没有更简单的方法可以将 15 个声音/按钮链接在一起？

这是 .m 文件：

#import "animalsViewController.h"

@interface animalsViewController ()

@end


@implementation animalsViewController


-(IBAction) boom; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"bird", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom2; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"bird2", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}
-(IBAction) boom3; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"bird3", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom4; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"chicken1", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom5; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"chicken2", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom6; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"cow", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom7; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"dog1", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom8; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"duck", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom9; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"horse", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom10; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"lion", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom11; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"monkey", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom12; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"owl", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom13; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"pig", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom14; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"rooster", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

-(IBAction) boom15; {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundFileURLRef;
    soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"sheep", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}


- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}






@end

这是 .h 文件：

#import <UIKit/UIKit.h>
#import <AudioToolbox/AudioToolbox.h>

@interface animalsViewController : UIViewController{


}

-(IBAction) boom;
-(IBAction) boom2;
-(IBAction) boom3;
-(IBAction) boom4;
-(IBAction) boom5;
-(IBAction) boom6;
-(IBAction) boom7;
-(IBAction) boom8;
-(IBAction) boom9;
-(IBAction) boom10;
-(IBAction) boom11;
-(IBAction) boom12;
-(IBAction) boom13;
-(IBAction) boom14;
-(IBAction) boom15;

@end
4

2 回答 2

1

使用单个 AVAudioPlayer 实例，如下所示。

-(void)playAudioOfType:(int)type{

     [self stopAudio];


     NSString *sound=@"";

     switch (type) {
       case 1:
          sound=@"bird";
        break;

       case 2:
          sound=@"bird2";
        break;

       case 3:
          sound=@"bird3";
        break;

       case 4:
          sound=@"chicken";
        break;

       default:
         break;
      }


      NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]
                                     pathForResource:sound
                                     ofType:@"mp3"]];



NSError *error;
if(url){
    audioPlayer = [[AVAudioPlayer alloc]
                   initWithContentsOfURL:url
                   error:&error];



    if (error)
    {
        NSLog(@"Error in audioPlayer: %@", 
              [error localizedDescription]);
    } else {
        audioPlayer.delegate = self;
        [audioPlayer prepareToPlay];
    }

    [audioPlayer play];
}


 }

 -(void)stopAudio{

if(audioPlayer && [audioPlayer isPlaying]){
    [audioPlayer stop];
    audioPlayer=nil;
}


}

然后你的每一个动作你都可以调用如下的函数

-(IBAction) boom; {
     [self playAudioOfType:1]; //Will play bird.mp3
}

-(IBAction) boom1; {
     [self playAudioOfType:2]; //Will play bird2.mp3
}

-(IBAction) boom2; {
     [self playAudioOfType:3]; //Will play bird3.mp3
}

在这里找到一个测试应用程序..您只需在应用程序中添加 mp3 文件，它应该可以工作..

于 2013-03-29T05:18:35.797 回答
0

试试这个链接：简单的声音问题

看到这个问题的最后一个......

    -(void)stop
    {
            AudioServicesDisposeSystemSoundID (_soundID);
            self.IsPlaying = FALSE;
    }
于 2013-03-29T05:21:37.203 回答