如何从NSArray中获取声音文件名并播放？

Question

我想通过触摸适当的UImageViews来播放几个音频文件(*.wav)。每一次触摸UIImageView都会改变一个“触发器编号”--所选择的视图。音频文件名称存储在一个数组中。但是我不知道如何编写一个方法来获取名称并播放正确的声音，而不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" which 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);
    

}

或者这是一个完全错误的解决方法？

相关的第二个问题是:我如何才能把三个“if(触摸视图== img...)”更短的代码(select-case?)声明？

Answer 1

试试这个。

   [arrAnimalde objectAtIndex: trigAnimal]

例如：

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