一，AVAudioPlayer本地音頻播放

• 使用AVAudioPlayer，需要導入AVFoundation.framework；
• 支持的音頻格式包括：AAC、ALAC、IMA4、linear、MP3；
• AVAudioPlayer支持播放單個聲音的能力，但并不支持流式播放，所以必須是緩沖完才能播放；

#import <AVFoundation/AVFoundation.h>
@interface AudioToolManager()<AVAudioPlayerDelegate>
/**
 播放器
 */
@property (nonatomic, strong) AVAudioPlayer *player;
@end

@implementation AudioToolManager
//初始化播放器
-(AVAudioPlayer*)player{
    if (!_player) {
        NSError *err;
        NSURL *url = [[NSBundle mainBundle] URLForResource:@“xxx” withExtension:@"mp3"];//wav
        _player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&err];
        _player.delegate = self;
        //獲取系統(tǒng)的聲音
        AVAudioSession *audioSession = [AVAudioSession sharedInstance];
        CGFloat currentVol = audioSession.outputVolume; 
        //設置播放器聲音
        _player.volume = currentVol;
        //設置播放速率
        _player.rate = 1.0;
        //設置播放次數(shù)，負數(shù)代表無限循環(huán)
//        _player.numberOfLoops = 1;
        //預加載資源
        [_player prepareToPlay];
    }
    return _player;
}

//開始播放
-(void)startPlay{
    if ([self.player isPlaying]) {
        [self.player stop];
    }
    [self.player play];
}

//停止播放
-(void)stopPlay{
    [self.player stop];
}

//暫停播放
-(void)pausePLay{
   [self.player pause];
}

#pragma mark -- delegate
// 音頻播放完成時
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{
    NSLog(@“播放完成”);
}

// 音頻播放出錯時
- (void)audioPlayerDecodeErrorDidOccur:(AVAudioPlayer *)player error:(NSError * __nullable)error{
    NSLog(@“播放出錯了”);
}
@end