Switching from back camera to front camera for video recording is not working

Question

Back camera is working fine but,when we switch from back to front camera ,it crashes(in case of video recording using MediaRecorder ).... it showing error which i show in log !!

enter image description here

Here is my code :

private void start_work()
 {
  if(recording)
  {


   Log.v("LOGTAG", "Recording Stopped");


  }
  else
  {
   recording = true;
   progress_relative_lay.setVisibility(View.VISIBLE);
   button_capture.setVisibility(View.GONE);
   //show_icon();

   recorder.start();
   Log.v("LOGTAG", "Recording Started");


  }
 }

and for initialize i use

recorder = new MediaRecorder();


 recorder.setOrientationHint(result) ;
  recorder.setPreviewDisplay(holder.getSurface());
  if(usecamera)
  {
   camera.unlock();
   recorder.setCamera(camera);

  }
  recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
  recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
  recorder.setProfile(camcorderProfile);

i release camera before switching,i use if(camera != null) { camera.stopPreview(); // stop preview camera.release(); // release previous camera } before switching.. — Gagan, Apr 13 '15 at 06:21
from the above code i can see only if(previewRunning) { camera.stopPreview(); } — Preethi Rao, Apr 13 '15 at 06:23
i have also added camera.release(); .. i have use one more method for switching camera...there i have added camera.release(); — Gagan, Apr 13 '15 at 06:28
then you should create new instance of camera with front cam propery — Preethi Rao, Apr 13 '15 at 06:30
i have try this too,but its not working ,i use camera = getCameraInstance(front_or_back_camera); after that i refresh camera — Gagan, Apr 13 '15 at 06:38
not related to this ,it was something else i use totally different from this — Gagan, Apr 13 '15 at 10:01
you know that recorder has a life cycle and you have to follow the life cycle — Preethi Rao, Apr 13 '15 at 10:03
ya i know that and i can't post my whole code, and i m releasing recorder i told you previously.. — Gagan, Apr 13 '15 at 10:04

score 2 · Answer 1 · answered Apr 13 '15 at 06:34

2

  if (camera != null) {
            throw new RuntimeException("camera already initialized");
        }

        Camera.CameraInfo info = new Camera.CameraInfo();

        // Try to find a front-facing camera (e.g. for videoconferencing).
        int numCameras = Camera.getNumberOfCameras();
        for (int i = 0; i < numCameras; i++) {
            Camera.getCameraInfo(i, info);
           //this will be front or back depending on the requirement 
            if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
                camera= Camera.open(i);
                break;
            }
        }

try adding this part of code

answered Apr 13 '15 at 06:34

Preethi Rao

5,117
1
16
29

i am using the same---------------------- private Camera getCameraInstance(int type) { Camera c = null; int numberOfCameras = Camera.getNumberOfCameras(); for(int i = 0; i < numberOfCameras; i++) { CameraInfo info = new CameraInfo(); Camera.getCameraInfo(i, info); if(info.facing == type) { try { c = Camera.open(i); // attempt to get a Camera instance } catch(Exception e) { // Camera is not available Util_Class.show_Toast("Camera not available.",getActivity()); } break; } } return c; } – Gagan Apr 13 '15 at 06:41
Now i have make some changes and it is working fine but problem exist for recording --MediaRecorder.start(); in case of front camera......it throw error on this line – Gagan Apr 13 '15 at 06:51
code is almost same ,i just add if(camera != null) { camera.stopPreview(); camera.setPreviewCallback(null); camera.lock(); camera.release(); } camera.release was already there.. now i have error in recorder.start(); – Gagan Apr 13 '15 at 07:30
are you releasing the recorder ? – Preethi Rao Apr 13 '15 at 07:48
you cant have same recorder object for both front and back recording – Preethi Rao Apr 13 '15 at 07:54
not working.....i try by releasing recorder and then re initialize it but its not working – Gagan Apr 13 '15 at 08:03
put that part of code also.. i am not able to understand with this code ..its a part of code.. and error is coming from somewhere else – Preethi Rao Apr 13 '15 at 08:05
thats what i am trying to say.. i am not finding any recorder object in the above code – Preethi Rao Apr 13 '15 at 09:22

Gagan · Accepted Answer · 2015-04-20T09:27:42.507

0

some times device go in onPause state ,i just re initialize everything in onResume method of the activity and it works..!

edited Apr 20 '15 at 09:27

answered Apr 13 '15 at 10:37

Gagan

745
10
31

Switching from back camera to front camera for video recording is not working

2 Answers2