使用AVAudioPlayer播放本地音频文件

SYAudio

导入录音头文件（注意添加framework：AVFoundation.framework、AudioToolbox.framework）

#import <AudioToolbox/AudioToolbox.h>
#import <AVFoundation/AVFoundation.h>

@property (nonatomic, strong) AVAudioPlayer *audioPlayer; // 播放

音频开始播放或停止

- (void)audioPlayWithFilePath:(NSString *)filePath
{
    if (self.audioPlayer)
    {
        // 判断当前与下一个是否相同
        // 相同时，点击时要么播放，要么停止
        // 不相同时，点击时停止播放当前的，开始播放下一个
        NSString *pathPrevious = [self.audioPlayer.url relativeString];
        pathPrevious = [pathPrevious stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

        /*
         NSString *currentName = [self getFileNameAndType:currentStr];
         NSString *nextName = [self getFileNameAndType:filePath];

         if ([currentName isEqualToString:nextName])
         {
             if ([self.audioPlayer isPlaying])
             {
                 [self.audioPlayer stop];
                 self.audioPlayer = nil;
             }
             else
             {
                 self.audioPlayer = nil;
                 [self audioPlayerPlay:filePath];
             }
         }
         else
         {
             [self audioPlayerStop];
             [self audioPlayerPlay:filePath];
         }
         */

        // currentStr包含字符"file://location/"，通过判断filePath是否为currentPath的子串，是则相同，否则不同
        NSRange range = [pathPrevious rangeOfString:filePath];
        if (range.location != NSNotFound)
        {
            if ([self.audioPlayer isPlaying])
            {
                [self.audioPlayer stop];
                self.audioPlayer = nil;
            }
            else
            {
                self.audioPlayer = nil;
                [self audioPlayerPlay:filePath];
            }
        }
        else
        {
            [self audioPlayerStop];
            [self audioPlayerPlay:filePath];
        }
    }
    else
    {
        [self audioPlayerPlay:filePath];
    }
}

音频播放器开始播放

- (void)audioPlayerPlay:(NSString *)filePath
{
    // 判断将要播放文件是否存在
    BOOL isExist = [[NSFileManager defaultManager] fileExistsAtPath:filePath];
    if (!isExist)
    {
        return;
    }

    NSURL *urlFile = [NSURL fileURLWithPath:filePath];
    self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:urlFile error:nil];
    self.audioPlayer.delegate = self;
    if (self.audioPlayer)
    {
        if ([self.audioPlayer prepareToPlay])
        {
            // 播放时，设置喇叭播放否则音量很小
            AVAudioSession *playSession = [AVAudioSession sharedInstance];
            [playSession setCategory:AVAudioSessionCategoryPlayback error:nil];
            [playSession setActive:YES error:nil];

            [self.audioPlayer play];
        }
    }
}

音频播放器停止播放

- (void)audioPlayerStop
{
    if (self.audioPlayer)
    {
        if ([self.audioPlayer isPlaying])
        {
            [self.audioPlayer stop];
        }

        self.audioPlayer.delegate = nil;
        self.audioPlayer = nil;
    }
}