iOS开发播放音效和音乐类封装

1、创建一个类继承于NSObject，如：soundPlay。
2、.h文件代码

#import <Foundation/Foundation.h>
@interface soundPlay : NSObject
///播放本地音效
+(void)playWithLocalSoundName:(NSString *)soundName;
///销毁音效id
+(void)disposeWithLocalSoundName:(NSString *)soundName;

///播放音乐
+(void)playWithMusicName:(NSString *)musicName;
///暂停音乐
+(void)pauseWithMusicName:(NSString *)musicName;
///停止音乐
+(void)stopWithMusicName:(NSString *)musicName;
@end

3、.m文件代码

#import "soundPlay.h"
#import <AVFoundation/AVFoundation.h>
@interface soundPlay()
@end
@implementation soundPlay
static NSMutableDictionary *_soundDict;

static NSMutableDictionary *_playerDict;

+(NSMutableDictionary *)soundDict
{
    if (!_soundDict) {
        _soundDict = [NSMutableDictionary dictionary];
    }
    return _soundDict;
}

+(NSMutableDictionary *)playerDict
{
    if (!_playerDict) {
        _playerDict = [NSMutableDictionary dictionary];
    }
    return _playerDict;
}

+(void)playWithLocalSoundName:(NSString *)soundName
{
    if (soundName == nil) return;
    
    //从数组中取得soundId
    SystemSoundID soundId = [[self soundDict][soundName] unsignedIntValue];
    
    //如果数组中soundId不存在,就要从新创建然后添加到数组里
    if (!soundId) {
        
        //获取工程中播放音效的路径
        NSURL *url = [[NSBundle mainBundle]URLForResource:soundName withExtension:nil];
        
        //如果该路径不存在,返回
        if (!url) return;
        
        //创建soundId
        AudioServicesCreateSystemSoundID((__bridge CFURLRef _Nonnull)(url), &soundId);//创建soundId
        
        //将soundId存储到数组中
        [self soundDict][soundName] = @(soundId);
    }
    
    //播放音效
    AudioServicesPlaySystemSound(soundId);
//    AudioServicesPlayAlertSound(soundId)//带振动效果
}

+(void)disposeWithLocalSoundName:(NSString *)soundName
{
    if (soundName == nil) return;
    
    //从数组中取得soundId
    SystemSoundID soundId = [[self soundDict][soundName] unsignedIntValue];
    
    //如果soundId存在就销毁
    if (soundId) {
        
        //销毁音效id
        AudioServicesDisposeSystemSoundID(soundId);
        
        //从数组中移除该文件
        [[self soundDict]removeObjectForKey:soundName];
    }
}

///播放音乐
+(void)playWithMusicName:(NSString *)musicName
{
    AVAudioPlayer *player = nil;
    
    if (musicName == nil) return;
    
    player = [self playerDict][musicName];
    
    if (!player) {
        NSURL *url = [[NSBundle mainBundle]URLForResource:musicName withExtension:nil];
        if (!url) return;
        player = [[AVAudioPlayer alloc]initWithContentsOfURL:url error:nil];
        [player prepareToPlay];
        [[self playerDict] setValue:player forKey:musicName];
    }
    [player play];
}

///暂停音乐
+(void)pauseWithMusicName:(NSString *)musicName
{
    AVAudioPlayer *player = [self playerDict][musicName];
    if (player) {
        
        [player pause];
    }
}

///停止音乐
+(void)stopWithMusicName:(NSString *)musicName
{
    AVAudioPlayer *player = [self playerDict][musicName];
    if (player) {
        [player stop];
        [[self playerDict]removeObjectForKey:musicName];
        player = nil;
    }
}
@end

4、调用，在需要使用的控制器导入头文件，#import "soundPlay.h"

///m_16.wav该文件需要事先导入工程，如下图
//播放音效
[soundPlay playWithLocalSoundName:@"m_16.wav"];
//内存警告
-(void)didReceiveMemoryWarning
{//移除音效
    [soundPlay disposeWithLocalSoundName:@"buyao.wav"];
}

- (IBAction)play:(id)sender {
    
    [soundPlay playWithMusicName:@"music.mp3"];
    
}
- (IBAction)pause:(id)sender {
    
    [soundPlay pauseWithMusicName:@"music.mp3"];
}
- (IBAction)stop:(id)sender {
    
    [soundPlay stopWithMusicName:@"music.mp3"];
}

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