iphone - 如何从NSArray获取声音文件名并播放？

Question

我想通过触摸相应的UImageViews来播放几个音频文件(* .wav)。每次触摸UIImageView都会更改一个“触发编号”-选中该 View 。音频文件名称存储在数组中。但是我不知道如何编写一种方法来获取名称并播放正确的声音，而无需使用带有冗余代码片段的select case方法来播放声音:

#pragma mark -

-(void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event
{
//Soundfile names in array arrAnimalde
arrAnimalde = [NSArray arrayWithObjects:@"Hund" ,@"Schwein" ,@"Ferkel", nil];

// here are some Views and their triggers
if([touch view] == img_hund){
    trigAnimal = 0;
    }

if([touch view] == img_schwein){
    trigAnimal = 1;
    }

if([touch view] == img_ferkel){
    trigAnimal = 2;
      }

        /* here I'd like to have a method to send the triggernumber and get the 
soundnameposition in the array to play the appropriate sound e. g. "Hund.wav" wich is the first entry
 in the array : I tried something with "self.langKeys objectAtIndex:arrAnimalde" instead of the string in the following code but it 
does'nt work
*/

        //Sound
    AudioServicesCreateSystemSoundID ((CFURLRef)[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource: @"**here please the right name from the array**" ofType: @"wav"]], &soundFileObject);
    AudioServicesPlaySystemSound (self.soundFileObject);


}

还是这是完全错误的解决方法？

相关的第二个问题是:如何将三个“if([touch view] == img ...”)代码放在较短的(select-case？)语句中？

谢谢您的回答!

Answer 1

试试这个...

   [arrAnimalde objectAtIndex: trigAnimal]

例如

 AudioServicesCreateSystemSoundID ((CFURLRef)[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource: [arrAnimalde objectAtIndex: trigAnimal] ofType: @"wav"]], &soundFileObject);