播放歌曲 AudioTool 笔记

.h

//+ (instancetype)sharedAudioTool;

SingletonInterface(AudioTool)

/**

*

* @param fileName 播放的文件名

* @param isLoop 是否循环播放

* @return 是否播放成功

*/

- (BOOL)playMusic:(NSString *)fileName isLoops:(BOOL)isLoop;

/**

*

* @param fileName 停止播放的文件名

*

*/

- (void)stopMusic:(NSString *)fileName;

/** 播放生日歌 */

- (void)playBirthSong;

/** 停止播放生日歌 */

- (void)stopBirthSong;

---------------------------------------------------------

.m

#import

#import#define kBirthdaySong @"birthday"

@interface AudioTool ()

@end

static NSMutableDictionary *musicPlayers;

@implementation GSAudioTool

- (instancetype)init

{

    if (self = [super init]) {

        if (!musicPlayers) musicPlayers = [NSMutableDictionary dictionary];

    }

    return self;

}

//static GSAudioTool *_audioTool = nil;

//+ (instancetype)sharedAudioTool

//{

//    static dispatch_once_t onceToken;

//    dispatch_once(&onceToken, ^{

//        _audioTool = [[GSAudioTool alloc] init];

//    });

//    return _audioTool;

//}

SingletonImplementation(AudioTool)

#pragma mark - 播放生日歌

- (void)playBirthSong

{

    [self playMusic:kBirthdaySong isLoops:YES];

}

#pragma mark - 停止生日歌

- (void)stopBirthSong

{

    [self stopMusic:kBirthdaySong];

}

- (BOOL)playMusic:(NSString *)fileName isLoops:(BOOL)isLoop

{

    //文件不存在

    if (fileName.length == 0) return NO;

    AVAudioPlayer *player = musicPlayers[fileName];

    if (!player) {

        NSURL *url = [[NSBundle mainBundle] URLForResource:fileName withExtension:@"mp3"];

        player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];

        player.delegate = self;

        if (isLoop) player.numberOfLoops = 2;

        if (![player prepareToPlay]) return NO; //是否可以播放

        [musicPlayers setObject:player forKey:fileName];

    }

    if (!player.isPlaying) return [player play];

    return YES;

}

- (void)stopMusic:(NSString *)fileName

{

    //文件不存在

    if (fileName.length == 0) return;

    AVAudioPlayer *player = musicPlayers[fileName];

    if (player) {

        [player stop];

        [[AVAudioSession sharedInstance] setActive:NO withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];

        [musicPlayers removeObjectForKey:fileName];

    }

}

#pragma mark - AVAudioPlayerDelegate

- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag

{

    [[AVAudioSession sharedInstance] setActive:NO withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];

}

------------------------------------------------

紅 

#define SingletonInterface(name) + (instancetype)shared##name;

#define SingletonImplementation(name) \

static id _instance; \

+ (instancetype)shared##name \

{ \

    static dispatch_once_t onceToken; \

    dispatch_once(&onceToken, ^{ \

    _instance = [[self alloc] init]; \

    }); \

    return _instance; \

} \

+ (instancetype)allocWithZone:(struct _NSZone *)zone \

{ \

    static dispatch_once_t onceToken; \

    dispatch_once(&onceToken, ^{ \

        _instance = [super allocWithZone:zone]; \

    }); \

    return _instance; \

} \

- (id)copyWithZone:(NSZone *)zone \

{ \

    return _instance; \

}