Hi i am trying to play many sounds using AVAudioPlayer and foundation.
The code is this
- (IBAction)pushButton19 {
NSString *path = [[NSBundle mainBundle] pathForResource:#"The Terminator" ofType:#"mp3"];
AVAudioPlayer* theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
theAudio.delegate = self;
[theAudio play];
}
- (IBAction)pushButton20 {
NSString *path = [[NSBundle mainBundle] pathForResource:#"The Wizard of Oz" ofType:#"mp3"];
AVAudioPlayer* theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
theAudio.delegate = self;
[theAudio play];
}
on the line theAudio.delegate = self;
it says
class * does not implement the
protocol
as well as
Semantic Issue Assigning to ID
from
incompatible type MainView *
what do i need to do to fix it and can u show me the correct code as im a noob at this?
Your controller must conforms to the AVAudioPlayerDelegate protocol and implements its necessary methods. This is a sample code for playing sound.
Related
I'm trying to use AVAudioPlayer to play an mp3. Here is the code that I have:
- (void) playClip {
NSString *mp3File = [[NSBundle mainBundle] pathForResource:#"inFavor" ofType:#"mp3"];
AVAudioPlayer *avPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:mp3File] error:NULL];
[avPlayer play];
}
the name of the file that I'm referencing is "inFavor.mp3"
I'm a bit new to Objective-C so I'm not exactly sure why this isn't working. I'm using Xcode 5.
Make the AVAudioPlayer a property of the class so that it is not released when the function goes out of scope.
#property (strong, nonatomic) AVAudioPlayer* avPlayer;
Then initialize with
self.avPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:mp3File] error:NULL];
try this code, you need to check the error. paste the log you are getting in error
NSError *error;
NSString *path = [[NSBundle mainBundle] pathForResource:#"inFavor"
ofType:#"mp3"];
AVAudioPlayer* avPlayer =
[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path]
error:&error];
if (error) {
NSLog(#"failed playing error: %#", error);
}else{
//avPlayer.delegate = self;
[avPlayer play];
}
I have a class that provides a Music Player, compiled under ARC. This is the init code:
- (id) init{
self = [super init];
runningVolumeNotification = FALSE;
MPMusicPlayerController *musicPlayer = [MPMusicPlayerController iPodMusicPlayer];
systemVolume = musicPlayer.volume;
NSString *myExamplePath = [[NSBundle mainBundle] pathForResource:#"servo" ofType:#"mp3"];
AVAudioPlayer* p = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:myExamplePath] error:NULL];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];
[p prepareToPlay];
[p stop];
return self;
}
Instruments reports a 100% leak on the line:
AVAudioPlayer* p = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:myExamplePath] error:NULL];
I can't figure out where the problem is!
(using AVFoundation.framework)
#import "AVFoundation/AVFoundation.h"
So I got a problem, I tried this code first in init method of my class (that is the one that is loaded first)
NSString* soundFilePath = [[NSBundle mainBundle] pathForResource:#"music" ofType:#"mp3"];
NSURL* soundFileURL = [NSURL fileURLWithPath:soundFilePath];
AVAudioPlayer* player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundFileURL error:nil];
player.numberOfLoops=-1;
[player play];
But it didn't work, than I decided to do it in thread:
in init method:
[NSThread detachNewThreadSelector:#selector(playMusic) toTarget:self withObject:nil];
and method itself:
-(void) playMusic {
NSString* soundFilePath = [[NSBundle mainBundle] pathForResource:#"music" ofType:#"mp3"];
NSURL* soundFileURL = [NSURL fileURLWithPath:soundFilePath];
AVAudioPlayer* player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundFileURL error:nil];
player.numberOfLoops=-1;
[player play];
}
it is declared in *.h file of course. It also didn't work.
I tried to debug, on line
}
of playMusic method the file is played for 2 or 3 seconds and then stops. It isn't played without debug. What is the problem?
The AVAudioPlayer will be deallocated immediately. You need to retain the player.
So make the AVAudioPlayer an instance variable of the class.
I am trying to setup a stopwatch alarm that is enabled via UISwitch. I want the alarm to be triggered after an x amount of secs after the timer has started. I have an ivar int variable (timerCount) that holds the amount of secs that has passed and I want to play a sound based on that ivar. When the timer begins and I enable the switch I would hope that the player would fire at 10 secs, but that is not the case. I know the "if statement" is the culprit because when I remove it the AVPlayer will play the wav file when the switch is enabled. I just need another set of eyeballs to look at this and figure out what I missed.
Here is the code snippet:
- (IBAction)timerSound{
if (voiceSwitch.on){
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"horn"
ofType:#"wav"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:soundFilePath];
player = [[AVAudioPlayer alloc] initWithContentsOfURL: fileURL error: nil];
if (timerCount == 10)
[self.player play];
}
else {
[self.player stop];
}
}
You are looking for playAt:.
Example based on yours –
- (IBAction)valueChanged:(id)sender {
UISwitch *aSwitch = (UISwitch*)sender;
if ( aSwitch.on ) {
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"horn"
ofType:#"wav"];
NSURL *fileURL = [NSURL fileURLWithPath:soundFilePath];
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL
error:nil];
[audioPlayer playAtTime:(audioPlayer.deviceCurrentTime + 3)];
} else {
[audioPlayer stop];
}
}
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag {
[self.theSwitch setOn:NO animated:YES];
[player release];
}
I have this code to play a sound but the first time you play it it takes a good 5 seconds to load...
How can I speed this up?
-(IBAction)playSound{ //play the cricket noise
NSString *soundPath = [[NSBundle mainBundle] pathForResource:#"Cricket_Sound" ofType:#"mp3"];
audioPlayer =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:soundPath] error:NULL];
audioPlayer.delegate = self;
[audioPlayer prepareToPlay];
audioPlayer.numberOfLoops = 0;
[audioPlayer play];
}
You can try by putting the following section of your code in viewDidLoad so that the audioPlayer instance is ready to play before it is asked to actually play the audio:
NSString *soundPath = [[NSBundle mainBundle] pathForResource:#"Cricket_Sound" ofType:#"mp3"];
audioPlayer =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:soundPath] error:NULL];
audioPlayer.delegate = self;
[audioPlayer prepareToPlay];
audioPlayer.numberOfLoops = 0;