iOS开发--音乐文件播放工具类的封装(包含了音效的封装)

#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

#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 = 0;

// 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 == 0) {
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