Memory Management - Loading Sound Effects - Cocoa Xcode - ios

So it has been brought to my attention that I should optimise the way I load and use sounds in a small game that I am developing for iOS.
I load a "boing" sound and play it every time I tap the screen, making the sprite jump (like mario).
I want to be able to play the sound every time, even if the sound is already playing from the previous jump...
Below are the 2 ways I'm currently using:
1st implementation:
//load the music from file
-(void)LoadMusic{
jumpSound = [[NSBundle mainBundle] pathForResource:#"boing" ofType:#"mp3"];
}
//call in viewDidLoad
- (void)viewDidLoad{
[self LoadMusic];
...
[super viewDidLoad];
}
//play sound when called
-(void)playSound{
jumpAffect = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:jumpSound] error:NULL];
[jumpAffect play];
}
//tap/touch to jump (& play sound)
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *) event{
[self playSound];
jumpUp = 16;
}
2nd implementation:, this is similar except I load the same file 5 times, and loop through to the next one (so the same sound affect can be called even if it's already in previous session).
int soundStage = 1;
//load the music from file
-(void)LoadMusic{
jumpSound = [[NSBundle mainBundle] pathForResource:#"Boing" ofType:#"mp3"];
jumpAffect = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:jumpSound] error:NULL];
jumpAffect.delegate = self;
jumpAffect2 = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:jumpSound] error:NULL];
jumpAffect2.delegate = self;
jumpAffect3 = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:jumpSound] error:NULL];
jumpAffect3.delegate = self;
jumpAffect4 = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:jumpSound] error:NULL];
jumpAffect4.delegate = self;
jumpAffect5 = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:jumpSound] error:NULL];
jumpAffect5.delegate = self;
}
//call in viewDidLoad
- (void)viewDidLoad{
[self LoadMusic];
...
[super viewDidLoad];
}
//tap/touch to jump (& play sound)
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *) event{
jumpUp = 16;
if(soundStage == 1){
[jumpAffect play];
soundStage = 2;
}
else if(soundStage == 2){
[jumpAffect2 play];
soundStage = 3;
}
else if(soundStage == 3){
[jumpAffect3 play];
soundStage = 4;
}
else if(soundStage == 4){
[jumpAffect4 play];
soundStage = 5;
}
else if(soundStage == 5){
[jumpAffect5 play];
soundStage = 1;
}
I'm wondering which why is the better way? I'm hoping to avoid memory leaks and just optimise it by being able to continuously have the same sound play when the screen is tapped. Thanks.

AVAudioPlayer plays multiple sounds simultaneously, one sound per audio player. So better is to load/play your quick sound inside the touchesBegan method without keeping the reference:
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *) event
{
NSString *jumpSound = [[NSBundle mainBundle] pathForResource:#"boing" ofType:#"mp3"];
AVAudioPlayer *jumpAffect = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:jumpSound] error:NULL];
[jumpAffect prepareToPlay];
[jumpAffect play];
jumpUp = 16;
}

Related

Coco2dx - Changing To Background Image

I need someone's help. Actually I have no idea what to replace to get a custom background image. I'm just can't do it anymore.
-(id) init
{
// always call "super" init
// Apple recommends to re-assign "self" with the "super's" return value
if( (self=[super initWithColor:ccc4(219,31,94, 999)]) ) {
ws=[[CCDirector sharedDirector]winSize];
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"game" ofType:#"wav"];
NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath];
AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundFileURL error:nil];
player.numberOfLoops=-1;
[player play];
Create and add a CCSprite:
CCSprite *bg = [CCSprite spriteWithFile:#"bg.png"];
bg.tag = 1;
bg.anchorPoint = CGPointMake(0, 0);
[self addChild:bg];

How to play the music continously which are stored in NSArray?

In tableview footer i have a play button to play the music, as the music starts tableview scrolls automatically according to the audio played but if the user tap on particular cell, the content in the particular cell is playing and stops but i want to continue the music from where the use taps to the end. Below is the code. Please help.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
int ref =(int) indexPath.row;
NSString *filePath = [soundArray objectAtIndex:ref];
NSString *Path = [[NSBundle mainBundle] pathForResource:filePath ofType:#"mp3"];
NSURL *musicFile = [NSURL fileURLWithPath:Path];
myAudioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:musicFile error:nil];
if (playing == YES) {
[playButton setBackgroundImage:[UIImage imageNamed:#"pause_White.png"] forState:UIControlStateNormal];
[myAudioPlayer play];
// playing = NO;
}
if (playing == NO) {
// [playButton setBackgroundImage:[UIImage imageNamed:#"play_white.png"] forState:UIControlStateNormal];
}
}
SoundArray contains trimmed music. How to continue the song ? Help much appreciated.
Here is my code as per my concept. You may have to manage it more as its just a sample
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
isMainMusic = NO;
// Construct URL to sound file
NSString *path = [NSString stringWithFormat:#"%#/1.mp3", [[NSBundle mainBundle] resourcePath]];
mainMusicUrl = [NSURL fileURLWithPath:path];
NSString *path1 = [NSString stringWithFormat:#"%#/2.mp3", [[NSBundle mainBundle] resourcePath]];
secondMusicUrl = [NSURL fileURLWithPath:path1];
}
-(void)playSecondaryMusic
{
if ([playMainMusic isPlaying]) {
[playMainMusic pause];
}
if (playSecondaryMusic) {
playSecondaryMusic.delegate = nil;
playSecondaryMusic = nil;
}
isMainMusic = NO;
playSecondaryMusic = [[AVAudioPlayer alloc] initWithContentsOfURL:secondMusicUrl error:nil];
playSecondaryMusic.delegate = self;
[playSecondaryMusic play];
}
- (IBAction)playMainMusic:(UIButton *)sender {
if (playMainMusic) {
playMainMusic.delegate = nil;
playMainMusic = nil;
}
isMainMusic = YES;
playMainMusic = [[AVAudioPlayer alloc] initWithContentsOfURL:mainMusicUrl error:nil];
playMainMusic.delegate = self;
[playMainMusic play];
}
//Delegate method
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
if (isMainMusic)
{
NSLog(#"Main music");
}
else
{
NSLog(#"Second music");
[playMainMusic play];
isMainMusic = YES;
}
}

How can I use this code to play more sounds?

//Action to play Audio//
-(IBAction)playAudio:(id)sender {
[self.loopPlayer play];
}
//Action to stop Audio//
-(IBAction)stopAudio:(id)sender {
if (self.loopPlayer.isPlaying) {
[self.loopPlayer stop];
self.loopPlayer.currentTime = 0;
self.loopPlayer.numberOfLoops = -1;
[self.loopPlayer prepareToPlay];
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//Code that gets audio file "trap synth"//
NSURL* audioFileURL = [[NSBundle mainBundle] URLForResource:#"trapsynth" withExtension:#"wav"];
self.loopPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:audioFileURL error:nil];
}
This is the code i'm using with one button to play the sound when the button is tapped and stop the sound when the button is released. How would I go about adding more sounds to more buttons? I want to have more buttons that play and stop different sounds just like this.
property (nonatomic, strong) AVAudioPlayer *loopPlayer;
This code is also in my ViewController.h file
Ok although the answer provided by Miro is on the write track the code example given has issues.
Should be this in viewDidLoad -
- (void)viewDidLoad {
[super viewDidLoad];
NSURL* audioFileURL1 = [[NSBundle mainBundle] URLForResource:#"trapsynth" withExtension:#"wav"];
self.loopPlayer1 = [[AVAudioPlayer alloc] initWithContentsOfURL:audioFileURL1 error:nil];
NSURL* audioFileURL2 = [[NSBundle mainBundle] URLForResource:#"other_audio_file" withExtension:#"wav"];
self.loopPlayer2 = [[AVAudioPlayer alloc] initWithContentsOfURL:audioFileURL2 error:nil];
}
also stopAudio: method should be this
-(IBAction)stopAudio:(id)sender {
if (self.loopPlayer1.isPlaying && (sender.tag == 1)) {
[self.loopPlayer1 stop];
self.loopPlayer1.currentTime = 0;
self.loopPlayer1.numberOfLoops = -1;
[self.loopPlayer1 prepareToPlay];
}
if (self.loopPlayer2.isPlaying && (sender.tag == 2)) {
[self.loopPlayer2 stop];
self.loopPlayer2.currentTime = 0;
self.loopPlayer2.numberOfLoops = -1;
[self.loopPlayer2 prepareToPlay];
}
}
And finally for playAudio:
-(IBAction)playAudio:(id)sender {
if([sender tag] == 1){
[self.loopPlayer1 play];
}
if([sender tag] == 2){
[self.loopPlayer2 play];
}
}
If you want to play different sounds at the same time you should look into creating separate AVAudioPlayers - if you create a different one for each sound, then you can easily control (play/stop) each of them separately with a specific button.
On the simplest level, you could do something like this, which allows you to use the same button handlers for all your audio. The playAudio checks the tag of the Play button you press (be sure to set the tag value in IB, to 1,2,etc). There really only need be one Stop button.
You could enhance this in many ways, like attempting to reuse the AVAudioPlayer somehow, and loading the audio on the fly instead of all at the beginning. Or storing your audio file info in an array, creating an array of AVAudioPlayers for management, etc. But this is a start.
-(IBAction)playAudio:(id)sender {
// first, stop any already playing audio
[self stopAudio:sender];
if([sender tag] == 1){
[self.loopPlayer1 play];
} else if([sender tag] == 2){
[self.loopPlayer2 play];
}
}
-(IBAction)stopAudio:(id)sender {
if (self.loopPlayer1.isPlaying) {
[self.loopPlayer1 stop];
self.loopPlayer1.currentTime = 0;
self.loopPlayer1.numberOfLoops = -1;
[self.loopPlayer1 prepareToPlay];
} else if (self.loopPlayer2.isPlaying) {
[self.loopPlayer2 stop];
self.loopPlayer2.currentTime = 0;
self.loopPlayer2.numberOfLoops = -1;
[self.loopPlayer2 prepareToPlay];
}
}
- (void)viewDidLoad {
[super viewDidLoad];
NSURL* audioFileURL1 = [[NSBundle mainBundle] URLForResource:#"trapsynth" withExtension:#"wav"];
self.loopPlayer1 = [[AVAudioPlayer alloc] initWithContentsOfURL:audioFileURL error:nil];
NSURL* audioFileURL2 = [[NSBundle mainBundle] URLForResource:#"trapsynth" withExtension:#"wav"];
self.loopPlayer2 = [[AVAudioPlayer alloc] initWithContentsOfURL:audioFileURL error:nil];
}
AND, in the .h file;
property (nonatomic, strong) AVAudioPlayer *loopPlayer1;
property (nonatomic, strong) AVAudioPlayer *loopPlayer2;

Play and Pause function

I have a soundboard app that plays sound and is supposed to play music and if you click the button then it pauses but it doesn't pause it only stops the music.
And once the music finishes the button stays selected.
My code is;
- (IBAction)aint:(id)sender {
UIButton *aint = (UIButton *)sender;
aint.selected = !aint.selected;
if(aint.selected)
{
// Play
NSString *path2 = [[NSBundle mainBundle] pathForResource:#"2" ofType:#"mp3"];
theAudio2 = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path2] error:NULL];
theAudio2.delegate = self;
theAudio2.numberOfLoops = 0;
[theAudio2 play];
[[NSUserDefaults standardUserDefaults] setObject:#"-" forKey:#"music"];
}
else
{
// Pause
[theAudio2 pause];
}
}
And I have theAudio2 and AVAudioPlayer declared.
Try this it will work as expected -
- (void)viewDidLoad
{
[super viewDidLoad];
NSString *path2 = [[NSBundle mainBundle] pathForResource:#"2" ofType:#"mp3"];
theAudio2 = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path2] error:NULL];
theAudio2.delegate = self;
theAudio2.numberOfLoops = 0;
}
- (IBAction)aint:(id)sender
{
UIButton *aint = (UIButton *)sender;
aint.selected = !aint.selected;
if(aint.selected)
{
// Play
[theAudio2 play];
[[NSUserDefaults standardUserDefaults] setObject:#"-" forKey:#"music"];
}
else
{
// Pause
[theAudio2 pause];
}
}
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
playerBtn.selected = NO;
}

How to stop audio after finishing loop in iOS

I'm new to iPhone programming. Using below code I'm displaying image with audio. Images and audio I have stored in array.After audio completed in audioPlayerDidFinishPlaying method I'm using this code I'm displaying next image with audio.
Every thing is work fine. But problem is after audio and images are finish, again its coming from starting. May be some problem in below code can any one correct it plz..
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
for (NSString* path in array000)
{
[blaukypath2 addObject:[UIImage imageWithContentsOfFile:path]];
NSLog(#"%#",path);
}
currentImage++;
NSError *error;
if (currentImage >= blaukypath2.count) currentImage = 0;
UIImage *blaukyyimag = [blaukypath2 objectAtIndex:currentImage];
[img10 setImage:blaukyyimag];
NSLog(#"%icurrentImage++ DIDF",currentImage);
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[audiopath2 objectAtIndex:currentImage] error:&error] ;
audioPlayer.delegate = self;
[audioPlayer prepareToPlay];
[audioPlayer play];
}
If you dont want to repeat the image and audio than remove this line in the code..
if (currentImage >= blaukypath2.count) currentImage = 0;
Because this line will make your currentImage 0. So the loop will start again.
UPDATE
Do it like this
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
for (NSString* path in array000)
{
[blaukypath2 addObject:[UIImage imageWithContentsOfFile:path]];
NSLog(#"%#",path);
}
if (currentImage < blaukypath2.count)
{
currentImage++;
NSError *error;
UIImage *blaukyyimag = [blaukypath2 objectAtIndex:currentImage];
[img10 setImage:blaukyyimag];
NSLog(#"%icurrentImage++ DIDF",currentImage);
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[audiopath2 objectAtIndex:currentImage] error:&error] ;
audioPlayer.delegate = self;
[audioPlayer prepareToPlay];
[audioPlayer play];
}
}
befor plying next audio, stop previous one.
[audioPlayer stop];
Hopes it work for you.
Make a instance variable int arrayIndex; initialize with = 0
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
if([array000 count] > arrayIndex) {
NSString* path = [arrayIndex objectAtIndex:arrayIndex];
[blaukypath2 addObject:[UIImage imageWithContentsOfFile:path]];
NSLog(#"%#",path);
currentImage++;
NSError *error;
if (currentImage >= blaukypath2.count) currentImage = 0;
UIImage *blaukyyimag = [blaukypath2 objectAtIndex:currentImage];
[img10 setImage:blaukyyimag];
NSLog(#"%icurrentImage++ DIDF",currentImage);
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[audiopath2 objectAtIndex:currentImage] error:&error] ;
audioPlayer.delegate = self;
[audioPlayer prepareToPlay];
[audioPlayer play];
}
arrayIndex++;
} else {
[audioPlayer stop];
}
try this approach and let me know if it work

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