Playing sound for click sound when date is selected in the date picker. Now i need to set my setting module for control ON and OFF using UISWitch.
How to set my control of sound to uiswitch .
-(void) switchforSounds:(id)sender
{
if ([sender isOn])
{
[Appdelegate.infoObj playback];
}
else
{
}
}
-(void) playback
{
NSString *path = [[NSBundle mainBundle] pathForResource:#"click" ofType:#"caf"];
if (path)
{
NSURL *url = [NSURL fileURLWithPath: path];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID ((CFURLRef)url, &soundID);
AudioServicesPlaySystemSound(soundID);
}
}
Nice and easy:
if(myUISwitch.on){
[self playback];
}
If that wasn't what you were looking for, I can always revise it.
if the question is how to bind the switch in IB to your function
-(void) switchforSounds:(id)sender the answer is
declare it like this:
- (IBAction) switchforSounds:(id) sender in your .h and .m file respectively.
right click on the switch in IB, you will see all events it can respond to. Choose changeValue event. Click in the hook near it and drag to the File's Owner element in your IB'c controller file. When you leave the mouse it's supposed to show you all IBAction selectors you've defined in your controller class. Choose switchforSounds.
Done.
Hopefully i understood your question right.
Related
I've been working on this project for a while, but I've encountered a problem that I can't figure out.
First, I have a checkbox button that saves to NSDefaultUser as BOOL value. It simply saves the value YES when it's pressed once and it saves NO if pressed again and so on... This checkbox button works fine like a normal custom checkbox button would.
I would like to make an option to mute all of my sounds in my app by using this checkbox button.
I'm playing my sounds by calling method such as:
- (void)startMusic1
{
NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:#"%#/music1.mp3", [[NSBundle mainBundle] resourcePath]]];
NSError *error;
AVAudioPlayer *audioPlayer;
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
audioPlayer.numberOfLoops = -1;
if (audioPlayer == nil)
NSLog(#"Error: %#", [error description]);
else
[audioPlayer play];
}
So for every sound I want to play in my app, I could repeat something like:
- (IBAction)playButton:(id)sender
{
NSUserDefaults *default = [NSUserDefaults standardUserDefaults];
if(![default boolForKey:#"isMuted"])
{
[self startMusic1];
}
}
But, this gets repetitive especially because I have to manage a lot of different sounds (and different buttons that play sounds) for my project, and it seems irrelevant to repeat these steps.
I tried making a new class with a subclass of AVAudioPlayer and messed around with -(BOOL)play method for a few days, but I couldn't manage to get the results I wanted. I researched and found posts like Disable in App sounds but this still wouldn't do it.
I'm pretty new to programming overall, so it'll be great if someone could enlighten me a little.
I tackle this (rightly or wrongly, but it works for me) by using a global model singleton. This is a class that effectively maintains state across the entire application.
The way to do that is with a class that has a shared static property like this:
//// Interface
#import <Foundation/Foundation.h>
#interface AudioModel
#property (nonatomic) BOOL playAudio;
+(id)sharedInstance;
#end
//// Implementation
#import "AudioModel.h"
#implementation AudioModel
// property for toggling audio on or off
#synthesize playAudio = _playAudio;
// singleton model variable
static AudioModel* audio = nil;
-(BOOL)playAudio {
return _playAudio;
}
-(void)setPlayAudio:(BOOL)playAudio {
_playAudio = playAudio;
}
// static
+(AudioModel*)sharedInstance {
if(audio == nil)
{
audio = [[AudioModel alloc]init];
}
return audio;
}
-(AudioModel*)init {
self = [super init];
if(self){
// set up default sounds on
// this may read from your stored value
_playAudio = YES;
}
}
#end
Then when you want to read or write to this globally available singleton model, you set a variable in your controller like this:
AudioModel *volumeControl = [AudioModel sharedInstance];
if(volumeControl.playAudio){
// method to play audio passing audio file name...
}
You could also have a reference to your AVAudioPlayer instance in this class, init it on creation of the shared instance and pass files to it to play when required.
I'm having a problem with AudioServicesPlaySystemSound in my iOS app.
I have a method defined to play a system sound. When I call the method from viewDidLoad, I can hear the sound play, but when I call it from a button handler, I do not hear the sound play.
Here's the code from my view controller:
SystemSoundID startSound = 0;
-(void)playStartSound
{
AudioServicesPlaySystemSound(startSound);
}
-(void)viewDidLoad
{
NSURL *urlStart = [[NSBundle mainBundle] URLForResource:#"Beep" withExtension:#"wav"];
AudioServicesCreateSystemSoundID((CFURLRef)urlStart, &startSound);
[self playStartSound];
[super viewDidLoad];
}
- (IBAction)start:(id)sender
{
[self playStartSound];
}
The IBAction method is associated with a button. When I select the button, the playStartSound method gets called, but the sound is not audible.
The system sound is not disposed of with AudioServicesDisposeSystemSoundID until the dealloc method is called.
I've tried calling AudioServicesCreateSystemSoundID from within playStartSound, but it didn't make any difference.
The app also uses AV Foundation, Media Player, Core Media, Core Video, and Core Location. I'm wondering if one of these might be interfering with AudioToolbox?
UPDATE: I just put together a simple app that just contains the above code and a button and the sound plays just fine when I select the button.
So then I removed all the video capture code from my controller and now the audio plays fine.
This was not working because I had an active video capture session in my application.
AudioServicesPlaySystemSound will not play when there is an active video capture session.
NSString *soundPath = [[NSBundle mainBundle] pathForResource:#"7777" ofType:#"mp3"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((__bridge CFURLRef)([NSURL fileURLWithPath: soundPath]), &soundID);
AudioServicesPlaySystemSound (soundID);
Hey try like that it will play
i'm coding a small app for the iphone (just for fun)
what i want:
if i press the "update" button:
send something to the server
parse the answer of the server
update the content of some labels on the screen
show the answer
play a system sound //using the audio toolbox
sleep some secods, just enough to finish the previos system sound call
do other stuff
end
actually, everything works but... for some reason, the label content is updated at the end of the method / callback / function that is called when pressed the "update" button.
what am i doing wrong?
thanks!
some code:
-(void) playASound: (NSString *) file {
//Get the filename of the sound file:
NSString *path = [NSString stringWithFormat:#"%#/%#",
[[NSBundle mainBundle] resourcePath],
file];
SystemSoundID soundID;
//Get a URL for the sound file
NSURL *filePath = [NSURL fileURLWithPath:path isDirectory:NO];
AudioServicesCreateSystemSoundID((CFURLRef)filePath, &soundID);
//play the file
AudioServicesPlaySystemSound(soundID);
}
- (IBAction)update: (id) sender{
BOOL error=[self sendContent];
if ( error == NO ){
result.text=[self parseContent];
[self playSound:#"ready"];
sleep(4);
....
}
// here is updated the gui
}
The GUI is displayed by the runloop. The loop will not reach its next iteration until your method is done executing. Therefore, your method blocks the view from updating. Either use a background thread or a timer.
You don't want to use sleep there. Sleep stops the whole process from continuing that's why your label gets updated only at the end of the function. I'd recommend either using NSTimer or performSelector:withObject:afterDelay: (see here).
This is because you have blocked the main thread when you sleep. UI can only be drawn on the main thread.
A solution is to use [NSTimer scheduledTimerWithTimeInterval:X_SEC target:self selector:#selector(doOtherStuff) userInfo:nil repeats:NO] in place of sleep and do other stuff.
What about performing the [self sendContent] call in a separate thread?
Alright I have two problems. I'm using AVAudioPlayer to play a simple audio file in .caf format. What I'm trying to do is have a play and pause button. Here is a sample of a simple IBAction to play the audio from a button.
- (IBAction) clear {
NSString *path = [[NSBundle mainBundle] pathForResource:#"clear" ofType:#"caf"];
AVAudioPlayer* myAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
myAudio.delegate = self;
myAudio.volume = 1.0;
myAudio.numberOfLoops = 0;
[myAudio play];
}
So when I go ahead and create another IBAction with the method...
- (IBAction) stopaudio {
[myAudio stop];
audioPlayer.currentTime = 0;
}
I compile and xcode tells me that myAudio in the stopaudio IBAction is not defined. How do I fix it so I'm able to access myAudio in another IBAction?
My Second question is that I'm using NavigationController to setup a TableView, when I make a selection it takes me to a UIView with a back button to go back to the TableView. What I'm trying to do is to kill any audio that I have playing in the UIView when I go back to the TableView. The code above is part of the code that I'm going to have in the UIView.
Also one quick question. Lets say I have an audio file that is 1 minute long. Clicking play again will overlap a new instance of that audio before the old instance is done playing. How can I check to see if myAudio is playing and not allow it to be played again until myAudio is finished playing?
Thank You!
First of all, you should read the documentation. It will remove almost all of your questions. Nevertheless, to have access to your instance of AVAudioPlayer from all methods of your class, you should define it in your .h file. To stop your player on returning to the previous screen, call [myAudio stop] in your viewWillDisappear:(BOOL)animated method. About your last question. If you define myAudio in your .h file, you will be able to check if it is playing now. smth like
- (IBAction) clear {
if(![myAudio isPlaying]){
[myAudio play];
}
}
I am implementing a sound effect that plays while a user is dragging a UISlider.
In a previous question, I used AudioServicesPlaySystemSound() but that type of sound can't be halted. I need the sound to halt when the user is not actively dragging the slider but has not released it.
Now I am creating a sound using an AVAudioPlayer object. I initialize it in my View Controller like this:
#interface AudioLatencyViewController : UIViewController <AVAudioPlayerDelegate> {
AVAudioPlayer *player1;
}
#implementation AudioLatencyViewController
#property (nonatomic, retain) AVAudioPlayer *player1;
#synthesize player1;
-(void)viewDidLoad {
[super viewDidLoad];
// the sound file is 1 second long
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"tone1" ofType:#"caf"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:soundFilePath];
AVAudioPlayer *newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:nil];
[fileURL release];
self.player1 = newPlayer;;
[newPlayer release];
[self.player1 prepareToPlay];
[self.player1 setDelegate:self];
}
I have two methods to control the sound. The first one plays the sound whenever the slider is being moved. It is connected to the UISlider's Value Changed event in Interface Builder.
-(IBAction)sliderChanged:(id)sender;
{
// only play if previous sound is done. helps with stuttering
if (![self.player1 isPlaying]) {
[self.player1 play];
}
}
The second method halts the sound when the user releases the slider button. It's connected to the UISlider's Touch Up Inside event.
-(IBAction)haltSound;
{
[self.player1 stop];
}
This works when the slider button is moved then released quickly, but if you hold down the button longer than two or three seconds, the sound repeats (good) then breaks up (bad). From then on, the sound won't play again (super bad).
I have tried setting the sound to loop using:
[self.player1 setNumberOfLoops:30];
...but that leads to the app freezing (plus locking up the Simulator).
What can I do to debug this problem?
When a user is holding the UISlider, Value Changed gets called MANY MANY times (any time the user moves just a slight amount). I would use Touch Down instead.
You might want to still try using the loop for this route...
I like the idea of playing a sound while the user is moving the slider though. Let me know how it works out.
deggstand#gmail.com