自定义Audio工具类

来源：互联网发布：生物大数据精准医疗编辑：程序博客网时间：2024/05/18 21:43
播放/销毁音效
播放/暂停/停止音乐
#import "ZGAudioTool.h"#import <AVFoundation/AVFoundation.h>@implementation ZGAudioToolstatic NSMutableDictionary *_soundIDs;static NSMutableDictionary *_players;+ (NSMutableDictionary *)soundIDs{    if (!_soundIDs) {        _soundIDs = [NSMutableDictionary dictionary];    }    return _soundIDs;}+ (NSMutableDictionary *)players{    if (!_players) {        _players = [NSMutableDictionary dictionary];    }    return _players;}+ (void)playAudioWithFilename:(NSString *)filename{    // 0.判断文件名是否为nil    if (filename == nil) {        return;    }    // 1.从字典中取出音效ID    SystemSoundID soundID = [[self soundIDs][filename] unsignedIntValue];    // 判断音效ID是否为nil    if (!soundID) {        NSLog(@"创建新的soundID");        // 音效ID为nil        // 根据文件名称加载音效URL        NSURL *url = [[NSBundle mainBundle] URLForResource:filename withExtension:nil];        // 判断url是否为nil        if (!url) {            return;        }        // 创建音效ID        AudioServicesCreateSystemSoundID((__bridge CFURLRef)(url), &soundID);        // 将音效ID添加到字典中        [self soundIDs][filename] = @(soundID);    }    // 播放音效    AudioServicesPlaySystemSound(soundID);}+ (void)disposeAudioWithFilename:(NSString *)filename{    // 0.判断文件名是否为nil    if (filename == nil) {        return;    }    // 1.从字典中取出音效ID    SystemSoundID soundID = [[self soundIDs][filename] unsignedIntValue];    if (soundID) {        // 2.销毁音效ID        AudioServicesDisposeSystemSoundID(soundID);        // 3.从字典中移除已经销毁的音效ID        [[self soundIDs] removeObjectForKey:filename];    }}// 根据音乐文件名称播放音乐+ (AVAudioPlayer *)playMusicWithFilename:(NSString  *)filename{    // 0.判断文件名是否为nil    if (filename == nil) {        return nil;    }    // 1.从字典中取出播放器    AVAudioPlayer *player = [self players][filename];    // 2.判断播放器是否为nil    if (!player) {        NSLog(@"创建新的播放器");        // 2.1根据文件名称加载音效URL        NSURL *url = [[NSBundle mainBundle] URLForResource:filename withExtension:nil];        // 2.2判断url是否为nil        if (!url) {            return nil;        }        // 2.3创建播放器        player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];        // 2.4准备播放        if(![player prepareToPlay])        {            return nil;        }        // 允许快进        player.enableRate = YES;        player.rate = 3;        // 2.5将播放器添加到字典中        [self players][filename] = player;    }    // 3.播放音乐    if (!player.playing)    {        [player play];    }    return player;}// 根据音乐文件名称暂停音乐+ (void)pauseMusicWithFilename:(NSString  *)filename{    // 0.判断文件名是否为nil    if (filename == nil) {        return;    }    // 1.从字典中取出播放器    AVAudioPlayer *player = [self players][filename];    // 2.判断播放器是否存在    if(player)    {        // 2.1判断是否正在播放        if (player.playing)        {            // 暂停            [player pause];        }    }}// 根据音乐文件名称停止音乐+ (void)stopMusicWithFilename:(NSString  *)filename{    // 0.判断文件名是否为nil    if (filename == nil) {        return;    }    // 1.从字典中取出播放器    AVAudioPlayer *player = [self players][filename];    // 2.判断播放器是否为nil    if (player) {        // 2.1停止播放        [player stop];        // 2.2清空播放器//        player = nil;        // 2.3从字典中移除播放器        [[self players] removeObjectForKey:filename];    }}@end
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