AVAudioPlayer Play/Pause/Stop local audio file on three different buttons - objective-c

Question

I want to play/pause/stop local audio file. Buttons for all functionalities are different. Check attached screenshot for reference.
Below is my click events,
-(IBAction)click_Play:(id)sender {
NSString *path;
NSURL *url;
//where you are about to add sound
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
path =[[NSBundle mainBundle] pathForResource:#"MySong" ofType:#"mp3"];
url = [NSURL fileURLWithPath:path];
player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:NULL];
[player setVolume:1.0];
[player prepareToPlay];
[player play];
}
-(IBAction)click_Pause:(id)sender {
[player pause];
}
-(IBAction)click_Stop:(id)sender {
[player stop];
}
Here, I am facing issue in pause functionality. After pausing the audio when I click on play button again. It start playing from starting and not at the point where I pause it. Any solution?
Thanks in advance!

Answer 1

Change your code to this:
-(IBAction)click_Play:(id)sender {
if (!player)
{
NSString *path;
NSURL *url;
//where you are about to add sound
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
path =[[NSBundle mainBundle] pathForResource:#"MySong" ofType:#"mp3"];
url = [NSURL fileURLWithPath:path];
player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:NULL];
[player setVolume:1.0];
[player prepareToPlay];
[player play];
}
else {
[player play];
}
}

Answer 2

Don't create instance of AVAudioSession and AVAudioPlayer again and again in play button action. So, keep it simple, create instance of AVAudioSession and AVAudioPlayer in viewDidLoad
- (void)viewDidLoad {
[super viewDidLoad];
NSString *path;
NSURL *url;
//where you are about to add sound
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
path =[[NSBundle mainBundle] pathForResource:#"MySong" ofType:#"mp3"];
url = [NSURL fileURLWithPath:path];
player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:NULL];
[player setVolume:1.0];
[player prepareToPlay];
}
-(IBAction)click_Play:(id)sender {
[player play];
}
-(IBAction)click_Pause:(id)sender {
[player pause];
}
-(IBAction)click_Stop:(id)sender {
[player stop];
}
Edit:
Call this method when you what to change track. I'll never recommend to create instance of object again and again
-(void)changeTrackWithPath:(NSString *)path{
AVPlayerItem *playerItem = [[AVPlayerItem alloc] initWithURL:[NSURL fileURLWithPath:path]];
[player replaceCurrentItemWithPlayerItem:playerItem];
[player play];
}