iOS

////  ViewController.m//  VoiceMessage////  Created by 李伟宾 on 2017/11/28.//  Copyright © 2017年 liweibin. All rights reserved.//#import "ViewController.h"#import <AVFoundation/AVFoundation.h>@interface ViewController (){    UIButton        *_recordButton;     //开始录音    UIButton        *_playRecordButton; //播放录音        UIView          *_volumeBgView;     //音量背景视图    UIImageView     *_volumeImageView;  //音量图片    UILabel         *_volumeLabel;      //提示文字        NSTimer         *_timer;            //定时器    NSInteger       _countDown;         //倒计时,最多60秒        AVAudioSession      *_session;    AVAudioRecorder     *_recorder;    //录音器    AVAudioPlayer       *_player;      //音频播放器    NSString            *_recordFilePath;     //录音文件沙盒地址        BOOL _isLeaveSpeakBtn;   //是否上滑}@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    self.view.backgroundColor = [UIColor whiteColor];        _recordButton = [UIButton buttonWithType:UIButtonTypeCustom];    _recordButton.frame = CGRectMake(50 , 100, 300 , 50);    [_recordButton setImage:[UIImage imageNamed:@"press_for_audio"] forState:UIControlStateNormal];    [_recordButton setImage:[UIImage imageNamed:@"press_for_audio_down"] forState:UIControlStateHighlighted];    [_recordButton addTarget:self action:@selector(recordButtonTouchDown) forControlEvents:UIControlEventTouchDown];    [_recordButton addTarget:self action:@selector(recordButtonTouchUpInside) forControlEvents:UIControlEventTouchUpInside];    [_recordButton addTarget:self action:@selector(recordButtonTouchUpOutside) forControlEvents:UIControlEventTouchUpOutside];    [_recordButton addTarget:self action:@selector(recordButtonTouchUpDragExit) forControlEvents:UIControlEventTouchDragExit];    [_recordButton addTarget:self action:@selector(recordButtonTouchUpDragEnter) forControlEvents:UIControlEventTouchDragEnter];    [self.view addSubview:_recordButton];        _playRecordButton = [UIButton buttonWithType:UIButtonTypeSystem];    _playRecordButton.frame = CGRectMake(50 , 200, 300 , 50);    [_playRecordButton setTitle:@"播放录音" forState:UIControlStateNormal];    [_playRecordButton addTarget:self action:@selector(playRecordButtonTouchUpInside) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:_playRecordButton];    }- (void)playRecordButtonTouchUpInside {        if (_recordFilePath) {        _player = [[AVAudioPlayer alloc] initWithData:[NSData dataWithContentsOfFile:_recordFilePath] error:nil];        [_session setCategory:AVAudioSessionCategoryPlayback error:nil];        [_player play];    }}//摁住说话- (void)recordButtonTouchDown {    //info.plist配置权限    if (![self canRecord]) {        NSLog(@"请启用麦克风-设置/隐私/麦克风");    }        //禁止其它按钮交互    [self setupUserEnabled:NO];        //音量视图    if (_volumeBgView) {        [_volumeBgView removeFromSuperview];        _volumeBgView = nil;    }        CGFloat viewWidth = self.view.frame.size.width/2.5;    _volumeBgView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, viewWidth, viewWidth+20)];    _volumeBgView.center = self.view.center;    _volumeBgView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.5];    _volumeBgView.layer.cornerRadius = 10;    [self.view addSubview:_volumeBgView];        _volumeImageView = [[UIImageView alloc] initWithFrame:CGRectMake(15, 10, viewWidth - 30, viewWidth - 30)];    _volumeImageView.image = [UIImage imageNamed:@"voice_1"];    [_volumeBgView addSubview:_volumeImageView];        _volumeLabel = [[UILabel alloc] init];    _volumeLabel.frame = CGRectMake(5, viewWidth - 10, viewWidth-10, 25);    _volumeLabel.font = [UIFont systemFontOfSize:14];    _volumeLabel.layer.masksToBounds = YES;    _volumeLabel.layer.cornerRadius = 5;    _volumeLabel.textAlignment = NSTextAlignmentCenter;    _volumeLabel.textColor = [UIColor whiteColor];    _volumeLabel.text = @"手指上滑，取消发送";    [_volumeBgView addSubview:_volumeLabel];        //开始录音    _countDown = 60;    //添加定时器    _timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(refreshLabelText) userInfo:nil repeats:YES];    [[NSRunLoop currentRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes];        _session =[AVAudioSession sharedInstance];    NSError *sessionError;    [_session setCategory:AVAudioSessionCategoryPlayAndRecord error:&sessionError];        if (_session == nil) {        NSLog(@"Error creating session: %@",[sessionError description]);    } else {        [_session setActive:YES error:nil];    }        //获取文件沙盒地址    NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];    _recordFilePath = [path stringByAppendingString:@"/RRecord.wav"];        //设置参数    NSDictionary *recordSetting = @{AVFormatIDKey: @(kAudioFormatLinearPCM),                                    AVSampleRateKey: @8000.00f,                                    AVNumberOfChannelsKey: @1,                                    AVLinearPCMBitDepthKey: @16,                                    AVLinearPCMIsNonInterleaved: @NO,                                    AVLinearPCMIsFloatKey: @NO,                                    AVLinearPCMIsBigEndianKey: @NO};        _recorder = [[AVAudioRecorder alloc] initWithURL:[NSURL fileURLWithPath:_recordFilePath] settings:recordSetting error:nil];    if (_recorder) {        _recorder.meteringEnabled = YES;        [_recorder prepareToRecord];        [_recorder record];                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(60 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{            [self recordButtonTouchUpInside];        });            }else{        NSLog(@"音频格式和文件存储格式不匹配,无法初始化Recorder");    }}- (void)refreshLabelText {        [_recorder updateMeters];        float   level;    float   minDecibels = -80.0f;    float   decibels    = [_recorder averagePowerForChannel:0];        if (decibels < minDecibels) {        level = 0.0f;    } else if (decibels >= 0.0f) {        level = 1.0f;    } else {        float   root            = 2.0f;        float   minAmp          = powf(10.0f, 0.05f * minDecibels);        float   inverseAmpRange = 1.0f / (1.0f - minAmp);        float   amp             = powf(10.0f, 0.05f * decibels);        float   adjAmp          = (amp - minAmp) * inverseAmpRange;                level = powf(adjAmp, 1.0f / root);    }        NSInteger voice = level*10 + 1;    voice = voice > 8 ? 8 : voice;        NSString *imageIndex = [NSString stringWithFormat:@"voice_%ld", voice];    if (_isLeaveSpeakBtn) {        _volumeImageView.image = [UIImage imageNamed:@"rc_ic_volume_cancel"];    } else {        _volumeImageView.image = [UIImage imageNamed:imageIndex];    }        _countDown --;        if (_countDown < 10 && _countDown > 0) {        _volumeLabel.text = [NSString stringWithFormat:@"还剩 %ld 秒",(long)_countDown];    }    //超时自动发送    if (_countDown < 1) {        [self recordButtonTouchUpInside];    }}//松开发送- (void)recordButtonTouchUpInside {    NSLog(@"recordButtonTouchUpInside");        _isLeaveSpeakBtn = NO;        if (!_timer) { //松开之后为何还会触发        return;    }        //停止录音 移除定时器    [_timer invalidate];    _timer = nil;        if ([_recorder isRecording]) {        [_recorder stop];    }        //允许其它按钮交互    [self setupUserEnabled:YES];        if (_countDown > 59) {        _volumeImageView.image = [UIImage imageNamed:@"rc_ic_volume_wraning"];        _volumeLabel.text = @"说话时间太短";                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{            if (_volumeBgView) {                [_volumeBgView removeFromSuperview];                _volumeBgView = nil;            }        });        return;    }        if (_volumeBgView) {        [_volumeBgView removeFromSuperview];        _volumeBgView = nil;    }        //音频数据    //    [NSData dataWithContentsOfFile:_recordFilePath];}- (void)setupUserEnabled:(BOOL)enable {    _playRecordButton.enabled = enable;}//上滑离开按钮区域松开 取消- (void)recordButtonTouchUpOutside {    NSLog(@"recordButtonTouchUpOutside");        _isLeaveSpeakBtn = NO;        //停止录音 移除定时器    [_timer invalidate];    _timer = nil;        if ([_recorder isRecording]) {        [_recorder stop];    }        //允许其它按钮交互    [self setupUserEnabled:YES];        if (_volumeBgView) {        [_volumeBgView removeFromSuperview];        _volumeBgView = nil;    }}- (void)recordButtonTouchUpDragExit {    NSLog(@"recordButtonTouchUpDragExit");    _isLeaveSpeakBtn = YES;        _volumeLabel.text = @"松开手指，取消发送";    _volumeLabel.backgroundColor =  [UIColor redColor];    _volumeImageView.image = [UIImage imageNamed:@"rc_ic_volume_cancel"];}- (void)recordButtonTouchUpDragEnter {    NSLog(@"recordButtonTouchUpDragEnter");    _isLeaveSpeakBtn = NO;    _volumeLabel.text = @"手指上滑，取消发送";    _volumeLabel.backgroundColor =  [UIColor clearColor];}//检查是否拥有麦克风权限- (BOOL)canRecord {    __block BOOL bCanRecord = YES;        AVAudioSession *audioSession = [AVAudioSession sharedInstance];    if ([audioSession respondsToSelector:@selector(requestRecordPermission:)]) {        [audioSession performSelector:@selector(requestRecordPermission:) withObject:^(BOOL granted) {            if (granted) {                bCanRecord = YES;            } else {                bCanRecord = NO;            }        }];    }    return bCanRecord;}@end