使用AVAudioPlayer播放本地音频文件

港控/mmm° 2022-05-17 02:21 280阅读 0赞

[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;
        }
    }

[SYAudio]: https://github.com/potato512/SYAudio