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

 1 #import <Foundation/Foundation.h>
 2 #import <AVFoundation/AVFoundation.h>
 3 
 4 @interface ChaosAudioTool : NSObject
 5 
 6 #pragma mark - 播放音乐
 7 // 播放音乐 musicName : 音乐的名称
 8 + (AVAudioPlayer *)playMusicWithMusicName:(NSString *)musicName;
 9 // 暂停音乐 musicName : 音乐的名称
10 + (void)pauseMusicWithMusicName:(NSString *)musicName;
11 // 停止音乐 musicName : 音乐的名称
12 + (void)stopMusicWithMusicName:(NSString *)musicName;
13 
14 #pragma mark - 音效播放
15 // 播放声音文件soundName : 音效文件的名称
16 + (void)playSoundWithSoundname:(NSString *)soundname;
17 
18 @end

二..m文件方法的实现

 1 #import "ChaosAudioTool.h"
 2 
 3 @implementation ChaosAudioTool
 4 
 5 static NSMutableDictionary *_soundIDs;
 6 static NSMutableDictionary *_players;
 7 
 8 + (void)initialize
 9 {
10     _soundIDs = [NSMutableDictionary dictionary];
11     _players = [NSMutableDictionary dictionary];
12 }
13 
14 + (AVAudioPlayer *)playMusicWithMusicName:(NSString *)musicName
15 {
16     assert(musicName);
17     
18     // 1.定义播放器
19     AVAudioPlayer *player = nil;
20     
21     // 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
22     player = _players[musicName];
23     if (player == nil) {
24         // 2.1.获取对应音乐资源
25         NSURL *fileUrl = [[NSBundle mainBundle] URLForResource:musicName withExtension:nil];
26         
27         if (fileUrl == nil) return nil;
28         
29         // 2.2.创建对应的播放器
30         player = [[AVAudioPlayer alloc] initWithContentsOfURL:fileUrl error:nil];
31         
32         // 2.3.将player存入字典中
33         [_players setObject:player forKey:musicName];
34         
35         // 2.4.准备播放
36         [player prepareToPlay];
37     }
38     
39     // 3.播放音乐
40     [player play];
41     
42     return player;
43 }
44 
45 + (void)pauseMusicWithMusicName:(NSString *)musicName
46 {
47     assert(musicName);
48     
49     // 1.取出对应的播放
50     AVAudioPlayer *player = _players[musicName];
51     
52     // 2.判断player是否nil
53     if (player) {
54         [player pause];
55     }
56 }
57 
58 + (void)stopMusicWithMusicName:(NSString *)musicName
59 {
60     assert(musicName);
61     
62     // 1.取出对应的播放
63     AVAudioPlayer *player = _players[musicName];
64     
65     // 2.判断player是否nil
66     if (player) {
67         [player stop];
68         [_players removeObjectForKey:musicName];
69         player = nil;
70     }
71 }
72 
73 #pragma mark - 音效的播放
74 + (void)playSoundWithSoundname:(NSString *)soundname
75 {
76     // 1.定义SystemSoundID
77     SystemSoundID soundID = 0;
78     
79     // 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
80     soundID = [_soundIDs[soundname] unsignedIntValue];
81     if (soundID == 0) {
82         CFURLRef url = (__bridge CFURLRef)[[NSBundle mainBundle] URLForResource:soundname withExtension:nil];
83         
84         if (url == NULL) return;
85         
86         AudioServicesCreateSystemSoundID(url, &soundID);
87         
88         // 将soundID存入字典
89         [_soundIDs setObject:@(soundID) forKey:soundname];
90     }
91     
92     // 3.播放音效
93     AudioServicesPlaySystemSound(soundID);
94 }
95 
96 @end