工具类的封装方法1

 

//
//  YSvoiceTool.h
//  audio
//
//  Created by ys on 15/12/18.
//  Copyright (c) 2015年 ys. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface YSvoiceTool : NSObject

/**
 *  播放音效
 *
 *  @param fileName 音效文件名
 */
+(void)playSoundWithName:(NSString *)fileName;


/**
 *  销毁音效
 *
 *  @param fileName 音效文件名
 */
+(void)disposeSoundWithName:(NSString *)fileName;

@end

//
//  YSvoiceTool.m
//  audio
//
//  Created by ys on 15/12/18.
//  Copyright (c) 2015年 ys. All rights reserved.
//

#import "YSvoiceTool.h"
#import <AVFoundation/AVFoundation.h>

@implementation YSvoiceTool

// 字典: fileName作为key, soundID作为value
// 存放所有的音频ID
static NSMutableDictionary *_soundsDict;

+(void)initialize
{
    _soundsDict = [NSMutableDictionary dictionary];
}

+(void)playSoundWithName:(NSString *)fileName
{
    if (!fileName) {
        return;
    }
    // 1.从字典中取出soundID
    SystemSoundID soundID = [_soundsDict[fileName] unsignedLongValue];
    if (!soundID) {// 创建
        // 加载音效文件
        NSURL *url = [NSURL URLWithString:[[NSBundle mainBundle]pathForResource:fileName ofType:nil]];
        if (!url) {
            return;
        }
        // 创建音效ID
        AudioServicesCreateSystemSoundID((__bridge CFURLRef)url, &soundID);
        // 放入字典
        _soundsDict[fileName] = @(soundID);
    }
    // 2.播放
    AudioServicesPlaySystemSound(soundID);
    
}


+(void)disposeSoundWithName:(NSString *)fileName
{
    if (!fileName) {
        return;
    }
    SystemSoundID soundID = [_soundsDict[fileName] unsignedLongValue];
    if (soundID) {
        // 销毁音效ID
        AudioServicesDisposeSystemSoundID(soundID);
        // 从字典中移除
        [_soundsDict removeObjectForKey:fileName];
    }

}

@end