//// ViewController.m// VoiceMessage//// Created by 李伟宾 on /11/28.// Copyright © 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
