69th, OC_ recording voice and playback voice function implementation

Recording:

1. Setting Global Properties

Nsurl *recordedfile; // Storage Path Avaudioplayer *player; // Play Avaudiorecorder *recorder; // recording NSString *recodername; // file name

2. Set the storage path

NSDateFormatter *formater =[[NSDateFormatter alloc] init]; [Formater Setdateformat:@"Yyyy-mm-dd-hh:mm:ss"]; NSString* Datestr =[formater stringfromdate:[nsdate Date]]; NSString* Path = [[Nssearchpathfordirectoriesindomains (Nscachesdirectory, Nsuserdomainmask,true) Lastobject] stringbyappendingpathcomponent:[nsstring stringWithFormat:@"%@.AAC", Datestr]]; Recodername= [NSString stringWithFormat:@"%@.AAC", Datestr];recordedfile= [Nsurl Fileurlwithpath:path];

3. Set Audio Session classification

Avaudiosession *session =*sessionerror;[ Session Setcategory:avaudiosessioncategoryplayandrecord Error:&Sessionerror]; if (Session = nil) {        }else{    [session Setactive:yes Error:nil];}

4. Start recording

Nsmutabledictionary *recordsetting =[[Nsmutabledictionary alloc]init];//set the recording format[recordsetting setvalue:[nsnumber NUMBERWITHINT:KAUDIOFORMATMPEG4AAC] forkey:avformatidkey];//Set the recording sample rate[Recordsetting setvalue:[nsnumber Numberwithfloat:8000] Forkey:avsampleratekey];//quality of the recording[recordsetting setvalue:[nsnumber Numberwithint:avaudioqualityhigh] forkey:avencoderaudioqualitykey];//number of linear samples 8, 16, 24,[Recordsetting setvalue:[nsnumber Numberwithint: -] Forkey:avlinearpcmbitdepthkey];//number of audio channels 1 or 2[Recordsetting setvalue:[nsnumber Numberwithint:1] Forkey:avnumberofchannelskey];recorder=[[Avaudiorecorder alloc] initwithurl:recordedfile settings:recordsetting Error:nil];//Buffered Recording[Recorder Preparetorecord];//Start Recording[recorder record];//if it is repeated recording requires an emptyPlayer = nil;

5. Stop Recording

// Stop Recording  =*= [[Avaudioplayer alloc] Initwithcontentsofurl:recordedfile error:&playererror];

Play

1. Play the recording

//The following settings are set when initializing the playerUInt32 sessioncategory =Kaudiosessioncategory_mediaplayback; Audiosessionsetproperty (Kaudiosessionproperty_audiocategory,sizeof(sessioncategory),&sessioncategory); UInt32 Audiorouteoverride=Kaudiosessionoverrideaudioroute_speaker; Audiosessionsetproperty (Kaudiosessionproperty_overrideaudioroute,sizeof(audiorouteoverride),&audiorouteoverride); Avaudiosession*audiosession =[Avaudiosession sharedinstance];//speaker Playback By default[Audiosession setcategory:avaudiosessioncategoryplayback Error:nil]; [Audiosession Setactive:yes Error:nil];//It is recommended that you set yes before playing, the playback end setting no, this function is to turn on the infrared sensor[[Uidevice Currentdevice] setproximitymonitoringenabled:yes];//Add Listener[[Nsnotificationcenter defaultcenter] addobserver:self selector: @selecto R (sensorstatechange:) Name:@"uideviceproximitystatedidchangenotification"                                                 Object: nil];//Start Playback[_myplayer play];

2. Handling Listener Events

-(void) Sensorstatechange: (Nsnotificationcenter *) notification; {  // If the phone is placed near the ear at this point, the sound will be output through the handset and darken the screen (save power)  if ([[Uidevice currentdevice] proximitystate] = = YES)  {[      [avaudiosession sharedinstance] Setcategory:avaudiosessioncategoryplayandrecord error:nil];  }   Else   {[      [avaudiosession sharedinstance] Setcategory:avaudiosessioncategoryplayback error:nil];}  }

3. Pause Playback

// Turn off Infrared sensing [[Uidevice Currentdevice] setproximitymonitoringenabled:no]; // Pause Playback [_myplayer stop];

69th, OC_ recording voice and playback voice function implementation