//录音
-(void)tape{
AVAudioSession*session = [AVAudioSessionsharedInstance];
NSError*sessionError;
//AVAudioSessionCategoryPlayAndRecord用于录音和播放
[sessionsetCategory:AVAudioSessionCategoryPlayAndRecorderror:&sessionError];
if(session ==nil)
NSLog(@"Error creating session: %@", [sessionErrordescription]);
else
[sessionsetActive:YESerror:nil];
NSArray*paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString*documentsDirectory=[pathsobjectAtIndex:0];//Documents目录
self.playName= [NSStringstringWithFormat:@"%@/play2.aac",documentsDirectory];
//录音设置
self.recorderSettingsDict=[[NSDictionaryalloc]initWithObjectsAndKeys:
[NSNumbernumberWithInt:kAudioFormatMPEG4AAC],AVFormatIDKey,
[NSNumbernumberWithInt:44100.0],AVSampleRateKey,
[NSNumbernumberWithInt:2],AVNumberOfChannelsKey,
[NSNumbernumberWithInt:8],AVLinearPCMBitDepthKey,
[NSNumbernumberWithBool:NO],AVLinearPCMIsBigEndianKey,
[NSNumbernumberWithBool:NO],AVLinearPCMIsFloatKey,
nil];
NSError*error =nil;
//必须真机上测试,模拟器上可能会崩溃
self.recordering= [[AVAudioRecorderalloc]initWithURL:[NSURLURLWithString:self.playName]
settings:self.recorderSettingsDict
error:&error];
if(self.recordering) {
//打开音量检测
self.recordering.meteringEnabled=YES;
//创建文件准备录音
[self.recorderingprepareToRecord];
//开始录音
[self.recorderingrecord];
//启动定时器
self.timer= [NSTimerscheduledTimerWithTimeInterval:0.01target:selfselector:@selector(levelTimer:)userInfo:nilrepeats:YES];
[[NSRunLoopcurrentRunLoop]addTimer:self.timerforMode:NSRunLoopCommonModes];
}
}
//播放
- (IBAction)playAction:(id)sender {
if(self.playName.length==0){
UIAlertView* alertView = [[UIAlertViewalloc]initWithTitle:@"⚠️"message:@"请先录音"delegate:nilcancelButtonTitle:@"确定"otherButtonTitles:nil];
[alertViewshow];
}else{
NSURL*soundUrl = [NSURLfileURLWithPath:self.playName];
//初始化播放器的时候如下设置
UInt32sessionCategory =kAudioSessionCategory_MediaPlayback;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory,
sizeof(sessionCategory),
&sessionCategory);
UInt32audioRouteOverride =kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty(kAudioSessionProperty_OverrideAudioRoute,
sizeof(audioRouteOverride),
&audioRouteOverride);
AVAudioSession*audioSession = [AVAudioSessionsharedInstance];
//默认情况下扬声器播放
[audioSessionsetCategory:AVAudioSessionCategoryPlaybackerror:nil];
[audioSessionsetActive:YESerror:nil];
NSError*playerError;
self.player= [[AVAudioPlayeralloc]initWithContentsOfURL:soundUrlerror:&playerError];
self.player.volume=1;
self.player.meteringEnabled=YES;
self.player.delegate=self;
if(self.player==nil)
{
NSLog(@"ERror creating player: %@", [playerErrordescription]);
}
[selfhandleNotification:YES];
[self.playerprepareToPlay];
[self.playerplay];
}
#pragma mark -监听听筒or扬声器
- (void) handleNotification:(BOOL)state
{
[[UIDevicecurrentDevice]setProximityMonitoringEnabled:state];//建议在播放之前设置yes，播放结束设置NO，这个功能是开启红外感应
if(state)//添加监听
[[NSNotificationCenterdefaultCenter]addObserver:self
selector:@selector(sensorStateChange:)name:@"UIDeviceProximityStateDidChangeNotification"
object:nil];
else//移除监听
[[NSNotificationCenterdefaultCenter]removeObserver:selfname:@"UIDeviceProximityStateDidChangeNotification"object:nil];
}
//处理监听触发事件
-(void)sensorStateChange:(NSNotificationCenter*)notification;
{
//如果此时手机靠近面部放在耳朵旁，那么声音将通过听筒输出，并将屏幕变暗（省电啊）
if([[UIDevicecurrentDevice]proximityState] ==YES)
{
NSLog(@"Device is close to user");
[[AVAudioSessionsharedInstance]setCategory:AVAudioSessionCategoryPlayAndRecorderror:nil];
}
else
{
NSLog(@"Device is not close to user");
[[AVAudioSessionsharedInstance]setCategory:AVAudioSessionCategoryPlaybackerror:nil];
}
}
}
- (void)levelTimer:(NSTimer *)time {
self.timeLabel.text = [NSString stringWithFormat:@"%f",self.recordering.currentTime];
[self.recordering updateMeters];//刷新音量数据
//获取音量的平均值[recorder averagePowerForChannel:0];
//音量的最大值[recorder peakPowerForChannel:0];
doublelowPassResults = pow(10, (0.05* [self.recordering peakPowerForChannel:0]));
NSLog(@"%lf",lowPassResults);
//最大500
//图片小-》大
if(00.06) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_01.png"]];
}elseif(0.060.13) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_02.png"]];
}elseif(0.130.20) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_03.png"]];
}elseif(0.200.27) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_04.png"]];
}elseif(0.270.34) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_05.png"]];
}elseif(0.340.41) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_06.png"]];
}elseif(0.410.48) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_07.png"]];
}elseif(0.480.55) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_08.png"]];
}elseif(0.550.62) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_09.png"]];
}elseif(0.620.69) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_10.png"]];
}elseif(0.690.76) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_11.png"]];
}elseif(0.760.83) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_12.png"]];
}elseif(0.830.9) {
[self.imageView setImage:[UIImage imageNamed:@"record_animate_13.png"]];
}else{
[self.imageView setImage:[UIImage imageNamed:@"record_animate_14.png"]];
}
}
demo地址下载demo