Iphone xcode stop background music

[bbparis]

Hello,

I added the following code in my .m file :


- (void)viewDidLoad
{

imageA setHidden:YES;
scrollView setScrollEnabled:YES;
scrollView setContentSize:CGSizeMake(320, 3420);
NSString *path = [NSBundle mainBundle] pathForResource:@"MyMusic" ofType:@"mp3";
AVAudioPlayer* musicLoop=[AVAudioPlayer alloc initWithContentsOfURL:NSURL fileURLWithPathath] error:NULL;
//musicLoop.delegate = self;
musicLoop.numberOfLoops = -1;
musicLoop.volume = 0.5;
musicLoop play;
super viewDidLoad;
}


it's a background music, how can I add a button to stop it ? because each time I'm trying to do that,
xcode says:

musicLoop stop; Use of undeclared identifier 'musicLoop'

any help please ??

[Joe-Kinglake]

Could you not in your .h file put this... (with your Outlets)

AVAudioPlayer* musicLoop;

then change this:

AVAudioPlayer* musicLoop=[AVAudioPlayer alloc initWithContentsOfURL:NSURL fileURLWithPath:path] error:NULL;

for

musicLoop=[AVAudioPlayer alloc initWithContentsOfURL:NSURL fileURLWithPath:path] error:NULL;

then where ever you needed to stop the music put

[musicLoop stop];

I think that should work. Hope that helps!

[bbparis]

thank you very much, but I have another problem now, I don't know why my simple application CRASH/ stopped after clicking on the button ( LetterA ) please find below the code:

------------------------ controller.h ---------------------------------

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

@interface ABC2ViewController : UIViewController <AVAudioPlayerDelegate> {
    IBOutlet UIScrollView *scrollView;
    IBOutlet UIImageView *imageA;
    IBOutlet UIImageView *imageB;
    AVAudioPlayer* musicLoop;
    AVAudioPlayer* AudioC;
    AVAudioPlayer* AudioB;
}

- (IBAction)letterA:(id)sender;
- (IBAction)letterB:(id)sender;
- (IBAction)musicStop:(id)sender;

@property(nonatomic, retain) IBOutlet UIImageView *imageA;
@property(nonatomic, retain) IBOutlet UIImageView *imageB;


@end

------------------------ controller.m ------------------------------------

[COLOR="rgb(160, 82, 45)"]#import "ABC2ViewController.h"
#import <AVFoundation/AVFoundation.h>

@implementation ABC2ViewController

@synthesize imageA;
@synthesize imageB;

- (IBAction)letterA:(id)sender{
    NSString *path = [[NSBundle mainBundle] pathForResource:@"A" ofType:@"m4a"];
	AVAudioPlayer* AudioC=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
    //[imageA setHidden:NO];
    if (imageA.hidden == TRUE) {
        [imageA setHidden:FALSE];
        [AudioC play];
        
        //[self performSelector:@selector(hideagain)withObject:nil afterDelay:2];
    }
    else {
        [imageA setHidden:TRUE];
        [AudioC play];
    }
}

- (IBAction)letterB:(id)sender{
    NSString *path = [[NSBundle mainBundle] pathForResource:@"A" ofType:@"m4a"];
	AVAudioPlayer* AudioB=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
	AudioB.delegate = self;
    //[imageB setHidden:NO];
    if (imageB.hidden == TRUE) {
        [imageB setHidden:FALSE];
        [AudioB play];
        
        //[self performSelector:@selector(hideagain)withObject:nil afterDelay:2];
    }
    else {
        [imageB setHidden:TRUE];
        [AudioB play];
    }
}


- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
    
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle


// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
   
    [imageA setHidden:YES];
    [imageB setHidden:YES];
    [scrollView setScrollEnabled:YES];
    [scrollView setContentSize:CGSizeMake(320, 3420)];
    NSString *path = [[NSBundle mainBundle] pathForResource:@"MusicLoop3a3" ofType:@"mp3"];
    AVAudioPlayer* musicLoop=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
    musicLoop.delegate = self;
    musicLoop.numberOfLoops = -1;
    musicLoop.volume = 0.5;
    [musicLoop play];
    [super viewDidLoad];
}

- (IBAction)musicStop:(id)sender{
    
    [musicLoop stop];    
}


- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (void)dealloc
{
    [musicLoop release];
    [musicLoop release];
    [AudioC release];
    [AudioB release];
    [super dealloc];
}

@end
[/color]

-------------------------------

Can you help me please ? knowing that I get the following yellow error :

Local declaration of 'Audio' hides instance variable

[Objective Zero]

This line:

AVAudioPlayer* AudioC=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];

Should be

AudioC=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];

If you declare something in the .h, you dont need the identifier before the variable. In this case it was AVAudioPlayer.

[bbparis]

Originally Posted by Objective Zero

This line:

AVAudioPlayer* AudioC=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];

Should be

AudioC=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];

If you declare something in the .h, you dont need the identifier before the variable. In this case it was AVAudioPlayer.

thank you very much for you help, but the application crash when I click on (letterA) and give me the following note in green:

[AudioC play]; Thread1: Stopped ay breakpoint1

[Objective Zero]

Go to Build and Run - Breakpoints Off and click on that.

[bbparis]

Hello, I'm using xcode4, so just give me few minutes to find it please.

[bbparis]

Originally Posted by Objective Zero

Go to Build and Run - Breakpoints Off and click on that.

Hello
SOrry I tried but I don't know where Build and Run in xcode4 to do what you asked me to do

[bbparis]

Hello,

Everything work fine now, thanks, just one more question, about the last part of my .m file, is the following code is correct ?

- (void)dealloc
{
[musicLoop release];
[musicLoop release];
[AudioC release];
[AudioB release];
[super dealloc];
}


I don't have any error, but just to be sure that it's correct ?

thanks again for your help.

[2WeeksToGo]

Thank you Objective ZERO.

I thank you... beyond measure if you ever need help with stuff I will repay the favour.