iOS programs play audio files

1. Controller code

#import "ViewController.h"

#import <AVFoundation/AVFoundation.h>

#import "RYAVTool.h"

@interface viewcontroller ()

@property(nonatomic,strong)nsmutabledictionary*allavid;

@end

@implementation Viewcontroller

-(void) viewdidload {

[Super viewdidload];

}

-(void) Touchesbegan: (nsset *) touches withevent: (uievent *) event

{

self. Allavid= [ryavtool playavwithname:@ "M_06.wav"];

}

memory warning when scavenging cache

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

[self. Allavid enumeratekeysandobjectsusingblock: ^ (ID key, ID obj, BOOL *stop) {

audioservicesdisposesystemsoundid([obj unsignedintvalue]);

}];

}

@end

2. Auxiliary Tool Class Code

#import <Foundation/Foundation.h>

@interface ryavtool: nsobject

+ (nsmutabledictionary*) Playavwithname: (nsstring*) name;

@end

#import "RYAVTool.h"

#import <AVFoundation/AVFoundation.h>

Static nsmutabledictionary *_allid;

Static systemsoundid _currentdata;

@implementation Ryavtool

+ (void) load

{

if (_allid= =Nil) {

_allid =[[nsmutabledictionary alloc]init];

}

}

+ (nsmutabledictionary*) Playavwithname: (nsstring*) name

{

if (!name) {

return _allid;

}

nsstring*path=[[nsbundle mainbundle]pathforresource: Name ofType: Nil];

if (!path) {

return _allid;

}

nsurl *url=[nsurl fileurlwithpath:p ath];

_currentdata=[_allid[name] unsignedintvalue];

if (! _currentdata) {

// Create audio playback files

Audioservicescreatesystemsoundid (__bridge cfurlref) (URL), &_currentdata);

// save

_allid[name]=@ (_currentdata);

}

// play

audioservicesplayalertsound(_currentdata);

return _allid;

}

@end

iOS programs play audio files