media player - Voice does not record when playing video in video view in android -

i developing application want start recording voice on button click, , want star playing video in video view @ same time. app works on androdi 4.2 , android 5.1 not work on latest device android 7.0. here code

public class mainactivity extends activity  {     button start,stop,play; boolean recording=false; string press_value="exit";    private static final string audio_recorder_folder = "audiorecorder";     boolean let_start_recording=true;      imageview startiv,profileiv;      boolean recording_is_in_progress=false;     videoview vv ;     mediaplayer mplayer;     relativelayout mainrel;      ///new media player     string audiosavepathindevice = null;       mediarecorder mediarecorder ;       random random ;       string randomaudiofilename = "abcdefghijklmnop";       public static final int requestpermissioncode = 1;       mediaplayer mediaplayer ;     @suppresswarnings("deprecation") @override protected void oncreate(bundle savedinstancestate)  {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);       startiv=(imageview)findviewbyid(r.id.imageview1);     profileiv=(imageview)findviewbyid(r.id.imageview3);      vv = (videoview)findviewbyid(r.id.your_video_view);     mainrel=(relativelayout)findviewbyid(r.id.main_rel);       recording_is_in_progress=false;     stopanimation();      profileiv.setonclicklistener(new onclicklistener()     {       public void onclick(view v)        {         if(let_start_recording)             {                 let_start_recording=false;                 startiv.setimageresource(r.drawable.recorder_stop_circle);                 startrecording();                 recording_is_in_progress=true;                 startanimation();              }             else             {                 let_start_recording=true;                 startiv.setimageresource(r.drawable.recorder_start_circle);                 stoprecording();                 recording_is_in_progress=false;                  stopanimation();//stop animation once press button              }         }      });      //start & stop  recording     startiv.setonclicklistener(new onclicklistener()     {       public void onclick(view v)        {         if(let_start_recording)             {                 let_start_recording=false;                 startiv.setimageresource(r.drawable.recorder_stop_circle);                 startrecording();                 recording_is_in_progress=true;                 startanimation();              }             else             {                 let_start_recording=true;                 startiv.setimageresource(r.drawable.recorder_start_circle);                 stoprecording();                 recording_is_in_progress=false;                  stopanimation();//stop animation once press button              }         }      });        }//eof oncreate   //((((   start animation )))) public void startanimation() {  //  vv.setvisibility(view.visible);     startiv.setvisibility(view.visible);     mainrel.setvisibility(view.visible);     profileiv.setvisibility(view.gone);         //video loop     vv.setoncompletionlistener(new mediaplayer.oncompletionlistener() {         public void oncompletion(mediaplayer mp) {             vv.start(); //need make transition seamless.         }     });   //   uri uri = uri.parse(r.drawable.sheep_video);     uri uri= uri.parse("android.resource://com.pac.myapp/raw/sheep_video");      vv.setvideouri(uri);     vv.requestfocus();         vv.start();      vv.setvideouri(uri.parse("android.resource://" + getpackagename() + "/" + r.drawable.sheep_video));       vv.setonpreparedlistener(new onpreparedlistener()      {         @override         public void onprepared(mediaplayer mp)          {             mp.setlooping(true);           ///  showtoast("video compelted");         }     });  }  public void stopanimation() {     if(vv.isplaying())         vv.stopplayback();      //vv.setvisibility(view.invisible);     startiv.setvisibility(view.gone);     mainrel.setvisibility(view.invisible);     profileiv.setvisibility(view.visible);   }  private string getfilename() {     string filepath = environment.getexternalstoragedirectory().getpath();     file file = new file(filepath, audio_recorder_folder);      if (!file.exists())      {         file.mkdirs();     }       simpledateformat dateformat = new simpledateformat("yyyy-mm-dd hh:mm:ss");     string filename = dateformat.format(new date());     filename="voice "+filename+".wav";      return (file.getabsolutepath() + file.separator + filename);     //return (file.getabsolutepath() + "/" + system.currenttimemillis() + ".wav"); }  private void startrecording()  {       audiosavepathindevice =  getfilename();           //   environment.getexternalstoragedirectory().getabsolutepath() + "/" +              //    createrandomaudiofilename(5) + "audiorecording.3gp";            mediarecorderready();            try {              mediarecorder.prepare();              mediarecorder.start();           } catch (illegalstateexception e) {              // todo auto-generated catch block              e.printstacktrace();           } catch (ioexception e) {              // todo auto-generated catch block              e.printstacktrace();           }  }  private void stoprecording()  {      mediarecorder.stop(); }      public void mediarecorderready(){       mediarecorder=new mediarecorder();       mediarecorder.setaudiosource(mediarecorder.audiosource.mic);       mediarecorder.setoutputformat(mediarecorder.outputformat.three_gpp);       mediarecorder.setaudioencoder(mediarecorder.outputformat.amr_nb);       mediarecorder.setoutputfile(audiosavepathindevice);    }   public void onbackpressed() {     if(recording_is_in_progress=true)     {         //if(recorder!=null)          //stoprecording();         finish();     } } public void home(view v)  { //intent i=new intent(v.getcontext(),mainactivity.class); //startactivity(i); //finish();    }   public void voice_list(view v)   {      if(recording_is_in_progress==false)    {    intent i=new intent(v.getcontext(),savedvoicelist.class);    startactivity(i);    finish(); }   }   public void about_us(view v)   { //showtoast("status = "+recording_is_in_progress);  if(recording_is_in_progress==false) {    intent i=new intent(v.getcontext(),aboutusactivity.class);    startactivity(i);    finish();  } }  public void showtoast(string str)  {     toast.maketext(getapplicationcontext(), str, toast.length_long).show();  }      }//eof activit 

probably have request android.permission.record_audio permission able record after android 6 version.

please check the document