Audiomanager (recording)

Package Com.k1.doctor.media;import Java.io.file;import java.io.ioexception;import java.util.uuid;import Android.media.mediarecorder;import Android.os.environment;import Android.os.Handler; Public classAudiomanager {PrivateMediarecorder Mrecorder; PrivateString mdirstring; PrivateString mcurrentfilepathstring; PrivateBoolean isprepared;//Are you ready for this ?    /** * Singleton Method 1 First declare a static type of variable a 2 in the declaration of the default constructor 3 again with public synchronized static * class name getinstance () {if (a==null) { A=new class ();} return A; } or use the following method*/    /** * Single instance of this class*/    Private StaticAudiomanager minstance; PrivateAudiomanager (String dir) {mdirstring=dir; }     Public StaticAudiomanager getinstance () {if(Minstance = =NULL) {synchronized (Audiomanager.class) {                if(Minstance = =NULL) {minstance=NewAudiomanager (GetPath ()); }            }        }        returnminstance; }    /** * callback function, ready to finish, button will start to display the recording box * * @author nickming **/     Public InterfaceAudiostagelistener {voidwellprepared (); }     PublicAudiostagelistener Mlistener;  Public voidSetonaudiostagelistener (Audiostagelistener listener) {Mlistener=Listener; }    //Preparation Methods     Public voidPrepareaudio () {Try {            //it should be false at first.isprepared =false; File dir=NewFile (mdirstring); if(!dir.exists ())            {Dir.mkdirs (); } String filenamestring=Generalfilename (); File File=NewFile (dir, filenamestring); Mcurrentfilepathstring=File.getabsolutepath (); Mrecorder=NewMediarecorder (); //Set Output FileMrecorder.setoutputfile (File.getabsolutepath ()); //Set the Meidarecorder audio source to be a microphoneMrecorder.setaudiosource (MediaRecorder.AudioSource.MIC); //set the output format for file audio to AMRMrecorder.setoutputformat (MediaRecorder.OutputFormat.RAW_AMR); //set the encoding format for audio to AMRMrecorder.setaudioencoder (MediaRecorder.AudioEncoder.AMR_NB); //strictly follow the Mediarecorder state flowchart given by Google's official APIMrecorder.prepare ();            Mrecorder.start (); NewThread (NewRunnable () {@Override Public voidrun () {inti =0;  while(I < -&& Mrecorder! =NULL) {i++; Try{Thread.Sleep ( +); } Catch(interruptedexception e) {e.printstacktrace (); }} mhandler.sendemptymessage (0);            }}). Start (); //ready to finish .isprepared =true; //It 's ready to be recorded.            if(Mlistener! =NULL) {mlistener.wellprepared (); }        } Catch(IllegalStateException e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); }    }    /** * The name of the randomly generated file * * @return*/    PrivateString Generalfilename () {//TODO auto-generated Method Stub        returnUuid.randomuuid (). toString () +". Amr"; }    //Level to get sound     Public intGetvoicelevel (intmaxlevel) {        //Mrecorder.getmaxamplitude () This is the amplitude range of the audio, the domain is 1-32767        if(isprepared) {Try {                //forensics +1, or less than 7.                returnMaxlevel * Mrecorder.getmaxamplitude ()/32768+1; } Catch(Exception e) {//TODO auto-generated Catch block            }        }        return 1; }    //Freeing Resources     Public voidrelease () {//strictly follow the API processMrecorder.stop ();        Mrecorder.release (); Mrecorder=NULL; }    //Cancel because a file was generated when prepare, so the Cancel method should delete the file,//This is the difference from the release method     Public voidCancel () {release (); if(Mcurrentfilepathstring! =NULL) {File file=NewFile (mcurrentfilepathstring);            File.delete (); Mcurrentfilepathstring=NULL; }    }     PublicString Getcurrentfilepath () {//TODO auto-generated Method Stub        returnmcurrentfilepathstring; }     Public StaticString GetPath () {File Sddir=NULL; Boolean sdcardexist= Environment.getexternalstoragestate (). Equals (environment.media_mounted);//determine if the SD card exists        if(sdcardexist) {Sddir= Environment.getexternalstoragedirectory ();//Get with directory                    } Else{Sddir=environment.getdatadirectory (); }        returnSddir.tostring () +"/voice"; } Handler Mhandler=NewHandler () { Public voidhandlemessage (android.os.Message msg) {if(isprepared && Mrecorder! =NULL) {release ();    }        }; };}

Audiomanager (recording)