iOS开发--音乐文件播放工具类的封装(包含了音效的封装)

一.头文件

 #import <Foundation/Foundation.h>
 #import <AVFoundation/AVFoundation.h>

 @interface ChaosAudioTool : NSObject

 #pragma mark - 播放音乐
 // 播放音乐 musicName : 音乐的名称
 + (AVAudioPlayer *)playMusicWithMusicName:(NSString *)musicName;
 // 暂停音乐 musicName : 音乐的名称
 + (void)pauseMusicWithMusicName:(NSString *)musicName;
 // 停止音乐 musicName : 音乐的名称
 + (void)stopMusicWithMusicName:(NSString *)musicName;

 #pragma mark - 音效播放
 // 播放声音文件soundName : 音效文件的名称
 + (void)playSoundWithSoundname:(NSString *)soundname;

 @end

二..m文件方法的实现

 #import "ChaosAudioTool.h"

 @implementation ChaosAudioTool

 static NSMutableDictionary *_soundIDs;
 static NSMutableDictionary *_players;

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

 + (AVAudioPlayer *)playMusicWithMusicName:(NSString *)musicName
 {
     assert(musicName);

     // 1.定义播放器
     AVAudioPlayer *player = nil;

     // 2.从字典中取player,如果取出出来是空,则对应创建对应的播放器
     player = _players[musicName];
     if (player == nil) {
         // 2.1.获取对应音乐资源
         NSURL *fileUrl = [[NSBundle mainBundle] URLForResource:musicName withExtension:nil];

         if (fileUrl == nil) return nil;

         // 2.2.创建对应的播放器
         player = [[AVAudioPlayer alloc] initWithContentsOfURL:fileUrl error:nil];

         // 2.3.将player存入字典中
         [_players setObject:player forKey:musicName];

         // 2.4.准备播放
         [player prepareToPlay];
     }

     // 3.播放音乐
     [player play];

     return player;
 }

 + (void)pauseMusicWithMusicName:(NSString *)musicName
 {
     assert(musicName);

     // 1.取出对应的播放
     AVAudioPlayer *player = _players[musicName];

     // 2.判断player是否nil
     if (player) {
         [player pause];
     }
 }

 + (void)stopMusicWithMusicName:(NSString *)musicName
 {
     assert(musicName);

     // 1.取出对应的播放
     AVAudioPlayer *player = _players[musicName];

     // 2.判断player是否nil
     if (player) {
         [player stop];
         [_players removeObjectForKey:musicName];
         player = nil;
     }
 }

 #pragma mark - 音效的播放
 + (void)playSoundWithSoundname:(NSString *)soundname
 {
     // 1.定义SystemSoundID
     SystemSoundID soundID = ;

     // 2.从字典中取出对应soundID,如果取出是nil,表示之前没有存放在字典
     soundID = [_soundIDs[soundname] unsignedIntValue];
     if (soundID == ) {
         CFURLRef url = (__bridge CFURLRef)[[NSBundle mainBundle] URLForResource:soundname withExtension:nil];

         if (url == NULL) return;

         AudioServicesCreateSystemSoundID(url, &soundID);

         // 将soundID存入字典
         [_soundIDs setObject:@(soundID) forKey:soundname];
     }

     // 3.播放音效
     AudioServicesPlaySystemSound(soundID);
 }

 @end