camera - Mediarecorder.start() RuntimeException: start failed android 4.0.4 -

tried make camera app , have followed googles developer guide, runtimeexception: start failed on android 4.0.4 device. works on friends 4.2.x samsung. tried google problem haven't found relevant solution.

error code

05-13 18:16:06.458: e/mediarecorder(32701): start failed: -19 05-13 18:16:06.468: e/androidruntime(32701): java.lang.runtimeexception: start failed. 05-13 18:16:06.468: e/androidruntime(32701):    @ android.media.mediarecorder.start(native method) 05-13 18:16:06.468: e/androidruntime(32701):    @ com.example.cameeera.main.onclick(main.java:61) 

main class

import java.io.ioexception;  import android.app.activity; import android.hardware.camera; import android.media.camcorderprofile; import android.media.mediarecorder; import android.os.bundle; import android.util.log; import android.view.view; import android.view.view.onclicklistener; import android.widget.button; import android.widget.framelayout;  public class main extends activity implements onclicklistener{      private camera mcamera;     private camerapreview mpreview;     private mediarecorder mmediarecorder;      private boolean isrecording = false;     button capturebutton;       @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         capturebutton = (button) findviewbyid(r.id.button_capture);         capturebutton.setonclicklistener(this);          // create instance of camera         mcamera = getcamerainstance();          // create our preview view , set content of our activity.         mpreview = new camerapreview(this, mcamera);         framelayout preview = (framelayout) findviewbyid(r.id.camera_preview);         preview.addview(mpreview);      }      @override     public void onclick(view v) {         if(v.getid() == r.id.button_capture){             if (isrecording) {                 // stop recording , release camera                 mmediarecorder.stop();  // stop recording                 releasemediarecorder(); // release mediarecorder object                 mcamera.lock();         // take camera access mediarecorder                  // inform user recording has stopped                 capturebutton.settext("start");;                 isrecording = false;             }              else {                 // initialize video camera                 if (preparevideorecorder()== true) {                     // camera available , unlocked, mediarecorder prepared,                     // can start recording                     mmediarecorder.start();                      // inform user recording has started                     capturebutton.settext("stop");                     isrecording = true;                 }                  else {                     // prepare didn't work, release camera                     releasemediarecorder();                     // inform user                 }             }         }     }//onclick       private boolean preparevideorecorder(){          //mcamera = getcamerainstance();         mmediarecorder = new mediarecorder ();          // step 1: unlock , set camera mediarecorder         mcamera.unlock();         mmediarecorder.setcamera(mcamera);          // step 2: set sources         mmediarecorder.setaudiosource(mediarecorder.audiosource.camcorder);         mmediarecorder.setvideosource(mediarecorder.videosource.camera);          // step 3: set camcorderprofile (requires api level 8 or higher)         //mmediarecorder.setprofile(camcorderprofile.get(camcorderprofile.quality_high));         camcorderprofile highcameraprofile = camcorderprofile.get(camcorderprofile.quality_high);         mmediarecorder.setprofile(highcameraprofile);         mmediarecorder.setmaxduration(100000); // maxduration 10 seconds         mmediarecorder.setmaxfilesize(20000000); // maxsize 20 megabytes           // step 4: set output file         mmediarecorder.setoutputfile(savevideofile.getoutputmediafile(savevideofile.media_type_video).tostring());          // step 5: set preview output         mmediarecorder.setpreviewdisplay(mpreview.getholder().getsurface());          // step 6: prepare configured mediarecorder         try {             mmediarecorder.prepare();         } catch (illegalstateexception e) {             log.d("tag", "illegalstateexception preparing mediarecorder: " + e.getmessage());             releasemediarecorder();             return false;         } catch (ioexception e) {             log.d("tag", "ioexception preparing mediarecorder: " + e.getmessage());             releasemediarecorder();             return false;         }         return true;     }//preparevideorecorder        @override     protected void onpause() {         super.onpause();         releasemediarecorder();       // if using mediarecorder, release first         releasecamera();              // release camera on pause event     }      private void releasemediarecorder(){         if (mmediarecorder != null) {             mmediarecorder.reset();   // clear recorder configuration             mmediarecorder.release(); // release recorder object             mmediarecorder = null;             mcamera.lock();           // lock camera later use         }     }      private void releasecamera(){         if (mcamera != null){             mcamera.release();        // release camera other applications             mcamera = null;         }     }      public static camera getcamerainstance(){            camera c = null;         try {             c = camera.open(); // attempt camera instance         }         catch (exception e){             // camera not available (in use or not exist)             log.d("tag", "camera not available (in use or not exist)" + e.getmessage());         }         return c; // returns null if camera unavailable     }      } 

here camerapreview class, works fine package com.example.cameeera;

import java.io.ioexception;  import android.content.context; import android.hardware.camera; import android.util.log; import android.view.surfaceholder; import android.view.surfaceview;  /** camera preview class */      public class camerapreview extends surfaceview implements surfaceholder.callback {         public surfaceholder mholder;     private camera mcamera;      public camerapreview(context context, camera camera) {         super(context);         mcamera = camera;          // install surfaceholder.callback notified when         // underlying surface created , destroyed.         mholder = getholder();         mholder.addcallback(this);     }      public void surfacecreated(surfaceholder holder) {         // surface has been created, tell camera draw preview.         try {             mcamera.setpreviewdisplay(holder);             mcamera.startpreview();         } catch (ioexception e) {             log.d("tag", "error setting camera preview: " + e.getmessage());         }     }      public void surfacedestroyed(surfaceholder holder) {         // empty. take care of releasing camera preview in activity.     }      public void surfacechanged(surfaceholder holder, int format, int w, int h) {         // if preview can change or rotate, take care of events here.         // make sure stop preview before resizing or reformatting it.          if (mholder.getsurface() == null){           // preview surface not exist           return;         }          // stop preview before making changes         try {             mcamera.stoppreview();         } catch (exception e){           // ignore: tried stop non-existent preview         }          // set preview size , make resize, rotate or         // reformatting changes here          // start preview new settings         try {             mcamera.setpreviewdisplay(mholder);             mcamera.startpreview();          } catch (exception e){             log.d("tag", "error starting camera preview: " + e.getmessage());         }     } }