ios录音功能实现
实现功能主要为：按下按钮开始录音，时间条开始计时，松开停止录音，时间条停止计时，滑开手指放弃录音。保存录音文件到本地document文件中。
一、导入头文件和代理
#import <AVAudioRecorderDelegate>二、在.h文件中声明
{
MBProgressHUD *HUD;
UILabel *noticeLabel;//提示标签
}
@property (nonatomic,strong) UIView *recordView;//录音界面
@property (nonatomic,strong) UIButton *recordBtn;//录音按钮
@property (nonatomic,strong) UILabel *timeLabel; //录音计时
@property (nonatomic,strong) AVAudioRecorder *audioRecorder;//音频录音机
@property (nonatomic,assign) NSInteger countNum;//录音计时（秒）
@property (nonatomic,strong) NSTimer *timer1; //控制录音时长显示更新
@property (nonatomic,copy) NSString *cafPathStr;三、正文
在.m文件中添加
#define margin 15
#define kSandboxPathStr [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
#define kCafFileName @"myRecord.caf"
/**
*存放所有的音乐播放器
*/
static NSMutableDictionary *_musices;//页面布局
- (void)setupView
{
CGFloat recordH = SCREEN_HEIGHT * 0.4;
CGFloat availH = recordH - margin * 4;
_recordView = [[UIView alloc]initWithFrame:CGRectMake(0, SCREEN_HEIGHT - recordH, SCREEN_WIDTH, recordH)];
_recordView.backgroundColor = [UIColor whiteColor];
[self addSubview:_recordView];
CGFloat timeH = availH * 0.2;
CGFloat btnH = availH * 0.7;
CGFloat noticeH = availH * 0.1;
self.timeLabel.frame = CGRectMake(0, margin, SCREEN_WIDTH, timeH);
self.recordBtn.frame = CGRectMake((SCREEN_WIDTH - btnH)*0.5, CGRectGetMaxY(self.timeLabel.frame) + margin, btnH, btnH);
self.recordBtn.layer.cornerRadius = self.recordBtn.frame.size.width * 0.5;
[self.recordBtn.layer setMasksToBounds:YES];
[self.recordBtn addTarget:self action:@selector(startRecordNotice) forControlEvents:UIControlEventTouchDown];
[self.recordBtn addTarget:self action:@selector(stopRecordNotice) forControlEvents:UIControlEventTouchUpInside];
[self.recordBtn addTarget:self action:@selector(cancelRecordNotice) forControlEvents:UIControlEventTouchUpOutside];
self.closeBtn.frame = CGRectMake(SCREEN_WIDTH - 25, 5, 20, 20);
[_closeBtn addTarget:self action:@selector(closeBtnClick) forControlEvents:UIControlEventTouchUpInside];
[_recordView addSubview:self.timeLabel];
[_recordView addSubview:self.recordBtn];
[_recordView addSubview:self.closeBtn];
noticeLabel = [[UILabel alloc]init];
noticeLabel.frame = CGRectMake(0, recordH - noticeH - margin, SCREEN_WIDTH, noticeH);
noticeLabel.textAlignment = NSTextAlignmentCenter;
noticeLabel.textColor = [UIColor lightGrayColor];
noticeLabel.font = [UIFont systemFontOfSize:14];
noticeLabel.text = @"按住不放录制语音";
[_recordView addSubview:noticeLabel];
self.timeLabel2.text = @"";
self.cafPathStr = [kSandboxPathStr stringByAppendingPathComponent:kCafFileName];
}
-(UIButton *)closeBtn
{
if (!_closeBtn) {
_closeBtn = [[UIButton alloc]init];
[_closeBtn setBackgroundImage:[UIImage imageNamed:@"infoClose.png"] forState:UIControlStateNormal];
}
return _closeBtn;
}
-(UILabel *)timeLabel
{
if (!_timeLabel) {
_timeLabel = [[UILabel alloc]init];
_timeLabel.textAlignment = NSTextAlignmentCenter;
_timeLabel.font = [UIFont fontWithName:@"HelveticaNeue-Thin" size:42];
_timeLabel.text = @"00:00";
_timeLabel.textColor = MF_ColorFromRGB(215, 155, 252);
}
return _timeLabel;
}
- (UIButton *)recordBtn
{
if (!_recordBtn) {
_recordBtn = [[UIButton alloc]init];
_recordBtn.backgroundColor = [UIColor clearColor];
[_recordBtn setBackgroundImage:[UIImage imageNamed:@"record_norm"] forState:UIControlStateNormal];
[_recordBtn setBackgroundImage:[UIImage imageNamed:@"record_high"] forState:UIControlStateHighlighted];
// _recordBtn.userInteractionEnabled = YES;//方便添加长按手势
}
return _recordBtn;
}//点击关闭页面按钮
- (void)closeBtnClick
{
[self removeFromSuperview];
}#pragma mark - 录音方法
//改变录音时间
- (void)changeRecordTime
{
self.countNum += 1;
NSInteger min = self.countNum/60;
NSInteger sec = self.countNum - min * 60;
// NSInteger sec = self.countNum;
self.timeLabel.text = [NSString stringWithFormat:@"%02ld:%02ld",(long)min,(long)sec];
if (sec == 59) {
[self stopRecordNotice];
}
}
- (void)startRecordNotice{
self.timeLabel2.text = @"";
[self stopMusicWithUrl:[NSURL URLWithString:self.cafPathStr]];
if ([self.audioRecorder isRecording]) {
[self.audioRecorder stop];
}
// NSLog(@"----------开始录音----------");
[self deleteOldRecordFile];
// 如果不删掉，会在原文件基础上录制；虽然不会播放原来的声音，但是音频长度会是录制的最大长度。
AVAudioSession *audioSession=[AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
if (![self.audioRecorder isRecording]){
// {0--停止、暂停，1-录制中
[self.audioRecorder record];
// 首次使用应用时如果调用record方法会询问用户是否允许使用麦克风
self.countNum = 0;
NSTimeInterval timeInterval =1 ;
// 0.1s
self.timer1 = [NSTimer scheduledTimerWithTimeInterval:timeInterval target:self selector:@selector(changeRecordTime) userInfo:nil repeats:YES];
[self.timer1 fire];
}
noticeLabel.text = @"脱离按钮，松开手指放弃录音";
}
- (void)stopRecordNotice
{
// NSLog(@"----------结束录音----------");
[self.audioRecorder stop];
[self.timer1 invalidate];
// 计算文件大小
long long fileSize = [self fileSizeAtPath:self.mp3PathStr]/1024.0;
NSString *fileSizeStr = [NSString stringWithFormat:@"%lld",fileSize];
self.timeLabel2.text = [NSString stringWithFormat:@"%ld \" %@kb ",(long)self.countNum,fileSizeStr];
self.timeLabel.text = @"01:00";
[self.delegate getRecordData:self.mp3PathStr type:@"2" fileName:kMp3FileName];
[self removeFromSuperview];
}
- (void)cancelRecordNotice
{
// NSLog(@"----------取消录音----------");
[self.audioRecorder stop];
[self.timer1 invalidate];
// 计算文件大小
long long fileSize = [self fileSizeAtPath:self.mp3PathStr]/1024.0;
NSString *fileSizeStr = [NSString stringWithFormat:@"%lld",fileSize];
self.timeLabel2.text = [NSString stringWithFormat:@"%ld \" %@kb ",(long)self.countNum,fileSizeStr];
self.timeLabel.text = @"00:00";
noticeLabel.text = @"按住不放录制语音";
}//删除旧录音缓存
-(void)deleteOldRecordFile{
NSFileManager* fileManager=[NSFileManager defaultManager];
BOOL blHave=[[NSFileManager defaultManager] fileExistsAtPath:self.cafPathStr];
if (!blHave) {
// NSLog(@"不存在");
return ;
}else {
// NSLog(@"存在");
BOOL blDele= [fileManager removeItemAtPath:self.cafPathStr error:nil];
if (blDele) {
// NSLog(@"删除成功");
}else {
// NSLog(@"删除失败");
}
}
}#pragma mark - Getter
/**
* 获得录音机对象
*
* @return 录音机对象
*/
-(AVAudioRecorder *)audioRecorder{
if (!_audioRecorder) {
//创建录音文件保存路径
NSURL *url=[NSURL URLWithString:self.cafPathStr];
//创建录音格式设置
NSDictionary *setting=[self getAudioSetting];
//创建录音机
NSError *error=nil;
_audioRecorder=[[AVAudioRecorder alloc]initWithURL:url settings:setting error:&error];
_audioRecorder.delegate=self;
_audioRecorder.meteringEnabled=YES;//如果要监控声波则必须设置为YES
if (error) {
NSLog(@"创建录音机对象时发生错误，错误信息：%@",error.localizedDescription);
return nil;
}
}
return _audioRecorder;
}
/**
* 取得录音文件设置
*
* @return 录音设置
*/
-(NSDictionary *)getAudioSetting{
//LinearPCM 是iOS的一种无损编码格式,但是体积较为庞大
//录音设置
NSMutableDictionary *recordSettings = [[NSMutableDictionary alloc] init];
//录音格式 无法使用
[recordSettings setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey: AVFormatIDKey];
//采样率
[recordSettings setValue :[NSNumber numberWithFloat:11025.0] forKey: AVSampleRateKey];//44100.0
//通道数
[recordSettings setValue :[NSNumber numberWithInt:2] forKey: AVNumberOfChannelsKey];
//线性采样位数
//[recordSettings setValue :[NSNumber numberWithInt:16] forKey: AVLinearPCMBitDepthKey];
//音频质量,采样质量
[recordSettings setValue:[NSNumber numberWithInt:AVAudioQualityMin] forKey:AVEncoderAudioQualityKey];
return recordSettings;
}
/**
*停止播放音乐文件
*/
- (void)stopMusicWithUrl:(NSURL *)fileUrl{
if (!fileUrl) return;//如果没有传入文件名，那么就直接返回
//1.取出对应的播放器
AVAudioPlayer *player=[self musices][fileUrl];
//2.停止
if ([player isPlaying]) {
[player stop];
// NSLog(@"播放结束:%@--------",fileUrl);
}
if ([[self musices].allKeys containsObject:fileUrl]) {
[[self musices] removeObjectForKey:fileUrl];
}
}//单个文件的大小
- (long long) fileSizeAtPath:(NSString*)filePath{
NSFileManager* manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:filePath]){
return [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
}else{
NSLog(@"计算文件大小：文件不存在");
}
return 0;
}PS：ios音频播放实现http://blog.csdn.net/fantasy_jun/article/details/77895525