IM模块-声音麦克风监控波动

分手后的思念是犯贱 2022-07-19 02:26 190阅读 0赞

参考资料：

\[简书地址\]([http://www.jianshu.com/users/23d0ae412e19/latest\_articles][http_www.jianshu.com_users_23d0ae412e19_latest_articles])

#import <UIKit/UIKit.h>
    
    @interface RecordingHub : UIView
    
    
    @property (nonatomic,assign) float peakPower;
    
    // 按下
    - (void)recordButtonTouchDown;
    
    
    // 移动到外面
    - (void)recordButtonTouchUpOutside;
    
    
    
    @end

#import "RecordingHub.h"
    
    
    @interface RecordingHub()
    
    @property (nonatomic,strong) UIView *bgView;
    @property (nonatomic,strong) UIImageView *recordVoiceView;
    @property (nonatomic,strong) UILabel *textLabel; // 显示文字
    @property (nonatomic,strong) NSTimer *timer;
    
    
    
    @end
    
    
    
    /**
     *  Description: 麦克风弹出窗口
     */
    @implementation RecordingHub
    
    
    - (instancetype)initWithFrame:(CGRect)frame{
        self = [super initWithFrame:frame];
        if (self) {
            [self setUpUI];
        }
        return self;
    }
    
    
    - (void)setUpUI{
        
        // 背景
        _bgView = [[UIView alloc]initWithFrame:self.bounds];
        _bgView.backgroundColor = [UIColor grayColor];
        _bgView.layer.cornerRadius = 6;
        _bgView.layer.masksToBounds= true;
        _bgView.alpha = 0.5;
        [self addSubview:_bgView];
        
        // 麦克风
        _recordVoiceView = [[UIImageView alloc]init];
        _recordVoiceView.frame = CGRectMake(10, 0, self.bounds.size.width - 20, self.bounds.size.height - 10);
        _recordVoiceView.image = [UIImage imageNamed:@"VoiceSearchFeedback001"];
        [self addSubview:_recordVoiceView];
        
        
       // 文字
        _textLabel = [[UILabel alloc]init];
        _textLabel.frame = CGRectMake(5,self.bounds.size.height - 30,self.bounds.size.width - 10,25);
        _textLabel.textAlignment = NSTextAlignmentCenter;
        _textLabel.textColor = [UIColor whiteColor];
        _textLabel.backgroundColor = [UIColor clearColor];
        _textLabel.text = @"请说话.....";
        _textLabel.font = [UIFont systemFontOfSize:12];
        _textLabel.layer.cornerRadius = 6;
        _textLabel.layer.masksToBounds = YES;
        _textLabel.layer.borderColor = [[UIColor redColor] colorWithAlphaComponent:0.5].CGColor;
        [self addSubview:_textLabel];
    }
    
    
    
    
    // 按下
    - (void)recordButtonTouchDown{
       
        _textLabel.text = @"松开发送";
        _textLabel.backgroundColor = [UIColor clearColor];
        
        _timer = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(updateVoiceImage) userInfo:nil repeats:YES];
        
        [[UIApplication sharedApplication].keyWindow addSubview:self];
    }
    
    
    // 移动到外面
    - (void)recordButtonTouchUpOutside{
        [_timer invalidate];
        [self removeFromSuperview];
    }
    
    
    // 改变图片的状态变化
    - (void)updateVoiceImage{
         _recordVoiceView.image = [UIImage imageNamed:@"VoiceSearchFeedback001@2x"];
         float number = fabs(_peakPower);
         NSLog(@"number is --->%f",number);
        
        
        if (10< number  && number< 20) {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback001@2x"]];
        }else if (20<number && number<=30) {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback002@2x"]];
        }else if (30<number && number<=40) {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback003@2x"]];
        }else if (40<number && number<=50) {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback004@2x"]];
        }else if (50<number && number<=60) {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback005@2x"]];
        }else if (60<number && number<=70) {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback006@2x"]];
        }else if (70<number && number<=80) {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback007@2x"]];
        }else if (80<number && number<=90) {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback008@2x"]];
        }else if (90<number && number<=100) {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback009@2x"]];
        }else {
            [_recordVoiceView setImage:[UIImage imageNamed:@"VoiceSearchFeedback020@2x"]];
        }
    }
    @end

#import "ViewController.h"
    #import "RecordingHub.h"
    #import <AVFoundation/AVFoundation.h>
    
    @interface ViewController ()
    
    
    @property (weak, nonatomic) IBOutlet UIButton *voiderBtn;
    @property (nonatomic,strong) RecordingHub *hud;
    
    @property (nonatomic,strong) AVAudioRecorder  *recorder;
    @property (nonatomic,strong) NSTimer *timer;
    @property (nonatomic,strong) NSURL *recordedFile;
    
    @end
    
    @implementation ViewController
    
    - (void)viewDidLoad {
        [super viewDidLoad];
        
     
        // 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];
        }
        
        
        
        _hud = [[RecordingHub alloc]initWithFrame:CGRectMake(self.view.bounds.size.width/2-100/2, self.view.bounds.size.height/2, 100, 100)];
        
        
        [_voiderBtn addTarget:self action:@selector(touchDown:) forControlEvents:UIControlEventTouchDown];
        [_voiderBtn addTarget:self action:@selector(touchOutside:) forControlEvents:UIControlEventTouchUpInside];
    }
    
    
    
    // 按下的时候
    - (void)touchDown:(UIButton *)btn{
       
        [_hud recordButtonTouchDown];
        
       
        NSMutableDictionary * recordSetting = [NSMutableDictionary dictionary];
        //设置录音格式
        [recordSetting setValue :[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
        //设置录音采样率(Hz) 如：AVSampleRateKey==8000/44100/96000（影响音频的质量）
        [recordSetting setValue:[NSNumber numberWithFloat:16000.0] forKey:AVSampleRateKey];
        //录音通道数  1 或 2
        [recordSetting setValue:[NSNumber numberWithInt: 1] forKey:AVNumberOfChannelsKey];
    
        // 初始化录音
        _recorder = [[AVAudioRecorder alloc]initWithURL:_recordedFile settings:recordSetting error:nil];
        
        // 准备录音
        [_recorder prepareToRecord];
        
        //开启音量检测
        _recorder.meteringEnabled = YES;
        
        // 开始录音
        [_recorder record];
        
        NSLog(@"开始录音.....");
        
        _timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(changeVoider) userInfo:nil repeats:YES];
    }
    
    
    // 抬起来的时候
    - (void)touchOutside:(UIButton *)btn{
        [_hud recordButtonTouchUpOutside];
        [_timer invalidate];
    }
    
    
    
    //  声音变化
    - (void)changeVoider{
        float peakPower = [_recorder averagePowerForChannel:0];
        NSLog(@"声音的变化--->%f",peakPower);
        [_recorder updateMeters];
        _hud.peakPower = peakPower;
    }
    
    
    
    
    @end

效果如下：

![Center][]

[http_www.jianshu.com_users_23d0ae412e19_latest_articles]: http://www.jianshu.com/users/23d0ae412e19/latest_articles
[Center]: /images/20220718/36c5df7fe1a94c4f9c4f2fdb113e188b.png