录音简单使用

迈不过友情╰ 2022-09-24 01:25 135阅读 0赞

#import "ViewController.h"
    #import <AVFoundation/AVFoundation.h>
    
    @interface ViewController ()<AVAudioPlayerDelegate>
    
    @property (nonatomic,strong) NSURL *recordedFile;
    
    
    @property (nonatomic,strong) AVAudioRecorder *recorder;
    
    @property (nonatomic,strong) AVAudioPlayer *play;
    
    @end
    
    @implementation ViewController
    
    - (void)viewDidLoad {
        [super viewDidLoad];
        
        
        // 临近状态检测
        
        bool proximityState = [UIDevice currentDevice].proximityState;
        NSLog(@"------->%d",proximityState);
        
        
        
        UIDevice *device = [UIDevice currentDevice];
        device.proximityMonitoringEnabled = YES; // 允许临近检测
        if (device.proximityMonitoringEnabled == YES ) {
            
            // 临近消息触发
            [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(proximityChanged:) name:UIDeviceProximityStateDidChangeNotification object:device];
        }
        
        // 设置好文件的存储位置
        NSFileManager *manager = [NSFileManager defaultManager];
        
        
        NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        
        NSString *path = [pathArray lastObject];
        path = [path stringByAppendingPathComponent:@"RecordedFile"];
        
        bool existsFlag = [manager fileExistsAtPath:path];
        if (!existsFlag) {
            
            bool isSuccess = [manager createFileAtPath:path contents:nil attributes:nil];
            
            
            if (isSuccess) {
                NSLog(@"创建成功");
            }else{
                NSLog(@"创建失败");
            }
        }
        
        _recordedFile = [NSURL fileURLWithPath:path];
        AVAudioSession *session = [AVAudioSession sharedInstance];
        NSError *error;
        
        // 开启录音和播放功能
        [session setCategory:AVAudioSessionCategoryPlayAndRecord error:&error];
        
        if (session == nil) {
            NSLog(@"session is error ---->%@",error.description);
        }else{
            [session setActive:true error:nil];
        }
    }
    
    
    
    - (void)proximityChanged:(NSNotification *)notification{
    
        // 如果此时手机靠近面部， 声音从听筒出来， 屏幕变暗
        if ([UIDevice currentDevice].proximityState == YES) { // 接近耳朵
            
            [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
            
        }else{
           
            // 没有黑屏的话， 就直接开扬声器。
            [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
        }
    }
    
    
    
    - (IBAction)recordAction:(id)sender {
        
        // 先设置播放和录音状态
        [[AVAudioSession sharedInstance]setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
        
        // 初始化录音
        _recorder = [[AVAudioRecorder alloc]initWithURL:_recordedFile settings:nil error:nil];
        
        // 准备录音
        [_recorder prepareToRecord];
        
        // 开始录音
        [_recorder record];
        
        NSLog(@"开始录音.....");
    }
    
    
    
    - (IBAction)stopAction:(id)sender {
        
        [_recorder stop];
        
        _recorder = nil;
        
        NSLog(@"结束录音......");
        
        
        
        NSError *error;
        _play = [[AVAudioPlayer alloc]initWithContentsOfURL:_recordedFile error:&error];
        if (_play == nil) {
            NSLog(@"error is --->%@",error.description);
        }
        _play.delegate = self;
        //设置从扬声器播放
        [[AVAudioSession sharedInstance]setCategory:AVAudioSessionCategoryPlayback error:nil];
    }
    
    
    
    
    - (IBAction)playerAction:(id)sender {
        
        
        if ([_play isPlaying]) {
            
            [_play pause];
            
        }else{
           
            [_play play];
        
        }
        
        
        
    }
    
    - (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{
    
        
        NSLog(@"播放完成");
    
    }
    
    
    
    @end