Android Imageview Displaying Rotated Images Although Source Is Not Rotated

I am trying to display gallery images in a gridview, and on image click, open a fullscreen view for the image. The weird thing is, that when the images are displaying in the galler

Solution 1:

First you need to create an ExifInterface:

ExifInterfaceexif=newExifInterface(filename);

You can then grab the orientation of the image:

orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);

Here's what the orientation values mean: http://sylvana.net/jpegcrop/exif_orientation.html

So, the most important values are 3, 6 and 8. If the orientation is 6, for example, you can rotate the image like this:

Matrixmatrix=newMatrix();
matrix.postRotate(90);
rotatedBitmap = Bitmap.createBitmap(sourceBitmap, 0, 0, sourceBitmap.getWidth(),       sourceBitmap.getHeight(), matrix, true);

Solution 2:

Try like this you can avoid OOM Error refer Load Bitmap Effieiently and Whatsapp bitmap loading

publicstaticintcalculateInSampleSize(BitmapFactory.Options options,
                int reqWidth, int reqHeight) {
            // Raw height and width of imagefinalintheight= options.outHeight;
            finalintwidth= options.outWidth;
            intinSampleSize=1;

            if (height > reqHeight || width > reqWidth) {

                finalinthalfHeight= height / 2;
                finalinthalfWidth= width / 2;

                // Calculate the largest inSampleSize value that is a power of 2 and// keeps both// height and width larger than the requested height and width.while ((halfHeight / inSampleSize) > reqHeight
                        && (halfWidth / inSampleSize) > reqWidth) {
                    inSampleSize *= 2;
                }
            }
            return inSampleSize;
        }


    publicstatic Bitmap decodeSampledBitmapFromResource(Resources res,
                int resId, int reqWidth, int reqHeight) {
            // First decode with inJustDecodeBounds=true to check dimensionsfinal BitmapFactory.Optionsoptions=newBitmapFactory.Options();
            options.inJustDecodeBounds = true;
            BitmapFactory.decodeResource(res, resId, options);
            // Calculate inSampleSize
            options.inSampleSize = calculateInSampleSize(options, reqWidth,
                    reqHeight);
            // Decode bitmap with inSampleSize set
            options.inJustDecodeBounds = false;
            return BitmapFactory.decodeResource(res, resId, options);
        }

Check the rotation of the Image and display it properly...as

    scaledBitmap=decodeSampledBitmapFromResource(.....);
    ExifInterface exif=null;
            try {
                exif = newExifInterface(filePath);
                intorientation= exif.getAttributeInt(
                        ExifInterface.TAG_ORIENTATION, 0);
                Log.d("EXIF", "Exif: " + orientation);
                Matrixmatrix=newMatrix();
                if (orientation == 6) {
                    matrix.postRotate(90);
                    Log.d("EXIF", "Exif: " + orientation);
                } elseif (orientation == 3) {
                    matrix.postRotate(180);
                    Log.d("EXIF", "Exif: " + orientation);
                } elseif (orientation == 8) {
                    matrix.postRotate(270);
                    Log.d("EXIF", "Exif: " + orientation);
                }
                scaledBitmap = Bitmap.createBitmap(scaledBitmap, 0, 0,
                        scaledBitmap.getWidth(), scaledBitmap.getHeight(), matrix,
                        true);
            } catch (IOException e) {
                e.printStackTrace();
            }