Android SDK Nexus S native camera issue

Question

I am developing an app using android native camera. I can successfully take a photo and store and display on ImageView. I am testing on HTC desire Z, Nexus S and Motorola Zoom. It works on all three devices except one issue on Nexus S. When I take a photo using Nexus S, the preview image has been rotated by 90 degrees.

Can you please let me know how to over come this issue?

My code:

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.camera_preview);
        imgTakenPhoto = (ImageView) findViewById(R.id.imageView);
        getPhotoClick();
    }
    private File getTempFile()
    {
        return new File(Environment.getExternalStorageDirectory(),  "image.tmp");
    }

    private void getPhotoClick()
    {
      Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
      intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(getTempFile()));
      startActivityForResult(intent, REQUEST_FROM_CAMERA);
    }

    InputStream is=null;

    @Override
    protected void onActivityResult(int requestcode, int resultCode, Intent data){
        if (requestcode == REQUEST_FROM_CAMERA && resultCode == RESULT_OK) {

            File file=getTempFile();

            try {
                is=new FileInputStream(file);

            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
            if(is==null){

                try {
                    Uri u = data.getData();
                    is=getContentResolver().openInputStream(u);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }
            }

            Bitmap thumbnail = BitmapFactory.decodeStream(is);
            imgTakenPhoto.setImageBitmap(thumbnail);

          }
    }

I have taken help from Problems saving a photo to a file

Many Thanks

Anyone please?

score 1 · Answer 1 · answered Oct 17 '11 at 13:01

1

this problem with preview occurs on some phones. The only simple workaround I know is to set landscape mode in onCreate():

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

Another (probably overkill) possibility is to overlay another surface on top of the preview surface, create custom PreviewCallback and rotate and draw each frame manually to this surface, but there are problems with performance and screen size.

answered Oct 17 '11 at 13:01

comodoro

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This works if you create your own camera interface. If you are using native camera this does not work. I have found a solution. I will post it later. Cheers – Chinthaka Oct 17 '11 at 17:10
@Chinthaka Is there a solution you can post here? – Swaroop Dec 30 '11 at 06:45

score 0 · Answer 2 · answered Dec 30 '11 at 14:09

Following function will detect the orientation of an image.

public static int getExifOrientation(String filepath) {
        int degree = 0;
        ExifInterface exif = null;
        try {
            exif = new ExifInterface(filepath);
        } catch (IOException ex) {
            Log.e(TAG, "cannot read exif", ex);
        }
        if (exif != null) {
            int orientation = exif.getAttributeInt(
                ExifInterface.TAG_ORIENTATION, -1);
            if (orientation != -1) {                    
                switch(orientation) {
                    case ExifInterface.ORIENTATION_ROTATE_90:
                        degree = 90;
                        break;
                    case ExifInterface.ORIENTATION_ROTATE_180:
                        degree = 180;
                        break;
                    case ExifInterface.ORIENTATION_ROTATE_270:
                        degree = 270;
                        break;
             }
    }
}

On your code, use this function to rotate the bitmap image. Util class can be found in https://android.googlesource.com/platform/packages/apps/Camera.git

if(degree != 0){
  bmp = Util.rotate(bmp, degree);
}

Remember this will only correct the orientation of preview of image. I hope this will help you.

Android SDK Nexus S native camera issue

2 Answers2