iOS : How to avoid overlapping sound/music in PickerViewController - iphone

Question

I have one music player with multiple sounds using picker view. My problem is when i click the next music, the previous one will overlap with the one that i've selected.Meaning when i scroll the pickerview to select a new object, it will play a new music/sound but the previous object will overlap the current selection. I want to stop the previous music so that it won't overlap. Here is the code.
H File :
#import <UIKit/UIKit.h>
#import <AVFoundation/AVAudioPlayer.h>
#interface PickerViewController : UIViewController <UIPickerViewDelegate, UIPickerViewDataSource, AVAudioPlayerDelegate>{
UIPickerView *picker;
UILabel *musicTitle;
NSMutableArray *musicList;
AVAudioPlayer *audioPlayer;
}
#property (nonatomic, retain) IBOutlet UIPickerView *picker;
#property (nonatomic, retain) IBOutlet UILabel *musicTitle;
#property (nonatomic, retain) NSMutableArray *musicList;
-(IBAction)playSelectedMusic:(id)sender;
#end
M File :
- (void)viewDidLoad
{
[super viewDidLoad];
musicList = [[NSMutableArray alloc] initWithObjects:#"m1",#"m2",#"m3",#"m6",#"m4", #"m5",nil];
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
if ([[musicList objectAtIndex:row] isEqual:#"m1"])
{
NSString *path = [[NSBundle mainBundle] pathForResource:#"m1" ofType:#"mp3"];
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
pickerView.delegate = self;
[theAudio play];
[theAudio setCurrentTime:0.0]; (our friend from this forum have suggested this but still doens't work)
NSString *resultString = [[NSString alloc] initWithFormat:
#"m1",
[musicList objectAtIndex:row]];
musicTitle.text = resultString;
}
if ([[musicList objectAtIndex:row] isEqual:#"m2"])
{
NSString *path = [[NSBundle mainBundle] pathForResource:#"m2" ofType:#"mp3"];
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
pickerView.delegate = self;
[theAudio play];
[theAudio setCurrentTime:0.0]; (our friend from this forum have suggested this but still doens't work)
NSString *resultString = [[NSString alloc] initWithFormat:
#"m2",
[musicList objectAtIndex:row]];
musicTitle.text = resultString;
}
Code amendment :
NSString *path = [[NSBundle mainBundle] pathForResource:#"you" ofType:#"mp3"];
NSURL *file = [[NSURL alloc] initFileURLWithPath:path];
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:file error:NULL];
[file release];
self.audioPlayer = theAudio;
[theAudio release];
[audioPlayer prepareToPlay];
[audioPlayer setDelegate:self];
[audioPlayer setNumberOfLoops:0];
[audioPlayer stop];
my silly mistake :
#property (nonatomic, retain) AVAudioPlayer *audioPlayer;

Answer 1

Just stop the currently playing sound before starting another one, your AVAudioPlayer is an ivar so you could do it. Add
[theAudio stop];