/*

    File: SysSoundViewController.m

Abstract: This file does the work for SysSound--defining the sound to play and then playing

it when a user taps the System Sound button. Tapping the Alert Sound button invokes an alert as

performed by the device; for example, on an iPhone, it plays the sound and also invokes 

vibration. Tapping the Vibration button directly invokes vibration on devices that support it.

 Version: 1.1

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*/

#import "SysSoundViewController.h"

@implementation SysSoundViewController

@synthesize soundFileURLRef;

@synthesize soundFileObject;

- (void) viewDidLoad {

    [super viewDidLoad];

    // Provide a nice background for the app user interface.

    self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];

    // Create the URL for the source audio file. The URLForResource:withExtension: method is

    //    new in iOS 4.0.

    NSURL *tapSound   = [[NSBundle mainBundle] URLForResource: @"tap"

                                                withExtension: @"aif"];

    // Store the URL as a CFURLRef instance

    self.soundFileURLRef = (CFURLRef) [tapSound retain];

    // Create a system sound object representing the sound file.

    AudioServicesCreateSystemSoundID (

        soundFileURLRef,

        &soundFileObject

    );

}

// Respond to a tap on the System Sound button.

- (IBAction) playSystemSound: (id) sender {

    AudioServicesPlaySystemSound (soundFileObject);

}

// Respond to a tap on the Alert Sound button.

- (IBAction) playAlertSound: (id) sender {

    AudioServicesPlayAlertSound (soundFileObject);

}

// Respond to a tap on the Vibrate button. In the Simulator and on devices with no 

//    vibration element, this method does nothing.

- (IBAction) vibrate: (id) sender {

    AudioServicesPlaySystemSound (kSystemSoundID_Vibrate);

}

- (void) dealloc {

    AudioServicesDisposeSystemSoundID (soundFileObject);

    CFRelease (soundFileURLRef);

    [super dealloc];

}

@end