在iOS中创建一系列mp3音频文件，并使用UIButton随机播放它们

Question

I am attempting to create a prediction making iOS 5 iPhone App that will play a short (1-15 second long) Random mp3 audio clip from an array that can be triggered by a UIButton's touchUpInside event. I want to create an array with the mp3 files and then create a method that when called will play 1 file at random at a high volume. I have found a response to a similar question: How do I call an array value and use it to play a sound file? But I did not find the question or response to be clear enough or very helpful in my app. Does anybody know of the most efficient way I can go about creating the mp3 audio file array and then creating a method that will play a random clip back? Thanks in advance.

Answer 1

I was able to create the NSArray and randomize the mp3 file played using this code. In my ViewController.h

`@property (strong, nonatomic) NSArray *soundsArray;

Then in my ViewController.m in the viewDidLoad method

self.soundsArray =[[NSArray alloc] initWithObjects:@"sound1", @"sound2", nil];

And I randomized the sounds in an IBAction using,

NSUInteger index = arc4random_uniform(self.soundsArray.count);

    NSString *filePath = [self.guySoundsArray objectAtIndex:index];
    NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:filePath ofType: @"mp3"];
    NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];