Develop Reference

On some devices captured image is automatically rotated

So I noticed that on some devices my captured image (bitmap) is weirdly rotated - to 90 degrees usually. I did create a function that can rotate it correctly, but the problem now is, that sometimes the image comes in (is captured) perfectly okay. Is there a way I can find out if captured image is rotated (it's orientation)?
I found a code fragment like this:
try {
ExifInterface exif = new ExifInterface(filename);
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
int rotate = 0;
switch(orientation) {
case ExifInterface.ORIENTATION_ROTATE_270:
rotate-=90;break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotate-=90;break;
case ExifInterface.ORIENTATION_ROTATE_90:
rotate-=90;break;
}
...
}
But ExifInterface exif = new ExifInterface(filename); expects a file or file uri to be created. Does this mean I have to change my bitmap to file first and then use this approach or is there other ways to fight with this thing?
P.S. I'm using Android's Camera X

It is recommended to use the AndroidX ExifInterface Library. You can use the ExifInterface(InputStream) if the captured image is Jpeg by wrapping the buffer with InputStream.

The sensor orientation is different across devices. CameraX respects that and returns the image with a rotation value in the callback, which can be used to rotate it upright.
https://developer.android.com/reference/androidx/camera/core/ImageCapture.OnImageCapturedListener.html#onCaptureSuccess(androidx.camera.core.ImageProxy,%20int)

you can try this
Bitmap rotateBitmap(String src, Bitmap bitmap) {
DebugLog.write();
int orientation;
try {
orientation = getExifOrientation(src);
} catch (IOException e) {
e.printStackTrace();
return bitmap;
}
Matrix matrix = new Matrix();
switch (orientation) {
case ExifInterface.ORIENTATION_FLIP_HORIZONTAL:
matrix.setScale(-1, 1);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
matrix.setRotate(180);
break;
case ExifInterface.ORIENTATION_FLIP_VERTICAL:
matrix.setRotate(180);
matrix.postScale(-1, 1);
break;
case ExifInterface.ORIENTATION_TRANSPOSE:
matrix.setRotate(90);
matrix.postScale(-1, 1);
break;
case ExifInterface.ORIENTATION_ROTATE_90:
matrix.setRotate(90);
break;
case ExifInterface.ORIENTATION_TRANSVERSE:
matrix.setRotate(-90);
matrix.postScale(-1, 1);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
matrix.setRotate(-90);
break;
case ExifInterface.ORIENTATION_NORMAL:
default:
return bitmap;
}
try {
Bitmap oriented = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
bitmap.recycle(); //wht
return oriented;
} catch (OutOfMemoryError e) {
e.printStackTrace();
}
return bitmap;
}
private int getExifOrientation(String src) throws IOException {
DebugLog.write();
ExifInterface exifInterface = new ExifInterface(src);
return exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
}

Getting Orientation as 0 and still getting the rotated image in ImageView in android

I have tried most of the code on stackoverflow but none of them are working.
I am using moto x4 for uploading picture using camera. when I use back camera it gets rotated 90 degree left and when I use front camera it gets rotated 90 degree right. but in debug mode, in both case I found the orientation = 0;
else if (requestCode == CAMERA) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
String imagePath = saveImage(thumbnail);
File imageFile = new File(imagePath);
ExifInterface exif = null;
try {
exif = new ExifInterface(imageFile.getAbsolutePath());
} catch (IOException e) {
e.printStackTrace();
}
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
bmap = GetandSetBitmap.rotateBitmap(thumbnail,orientation);
mImageView.setBackgroundResource(0);
mImageView.setImageBitmap(bmap);
}

This probably has to do with the fact that one camera is by default in landscape and the other in reverse landscape, so orientation = 0, as the orientation is detected to be the normal one in both cases. Unfortunately, I don't have a solution that wouldn't involve manually rotating the image to cover all cases. Personally I've used a switch to cater for the cases where my photo was saved with a 90 degrees rotation:
ExifInterface exifInterface = new ExifInterface(pictureFile.getPath());
int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
Bitmap correctedBitmap;
switch(orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
correctedBitmap = bitmap;
capturedImageHolder.setImageBitmap(correctedBitmap);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
correctedBitmap = rotateImage(bitmap, 90);
capturedImageHolder.setImageBitmap(correctedBitmap);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
correctedBitmap = rotateImage(bitmap, 180);
capturedImageHolder.setImageBitmap(correctedBitmap);
break;
case ExifInterface.ORIENTATION_NORMAL:
default:
correctedBitmap = rotateImage(bitmap, 270);
capturedImageHolder.setImageBitmap(correctedBitmap);
break;
}
} catch (IOException e) {
}
public static Bitmap rotateImage(Bitmap source, float angle) {
Matrix matrix = new Matrix();
matrix.postRotate(angle);
return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(),
matrix, true);
}
In your case, you would need to detect if the photo is taken from the front-facing camera or the back and adjust the values accordingly.

How to rotate image after capture from camera

Issues facing on Samsung, when I am capturing the image, the captured image get rotated. I am trying to rotate the image in the vertical direction 90 degree. On Back Facing the image get rotated with below code. But two images get stored on the device. Also issues facing while I am capturing the image on front face the image get rotated, how I can handle the image rotation in below code for both the front and back facing. Any ideas ?
try {
upload_bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
large_bitmap = scaleDownLargeImageWithAspectRatio(upload_bitmap);
String fileNameLarge = "myapp_" + System.currentTimeMillis() + ".jpg";
large_bitmap_path = MediaStore.Images.Media.insertImage(getContentResolver(), large_bitmap, fileNameLarge, null);
//Start change orientation
String device_name = Build.MANUFACTURER;
if(device_name.equals("samsung"))
{
int rotate=0;
try {
String realPath = getRealPathFromUri(CameraActivity.this, Uri.parse(large_bitmap_path));
exif = new ExifInterface(realPath);
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_270:
rotate = 270;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotate = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_90:
rotate = 90;
break;
case ExifInterface.ORIENTATION_NORMAL:
case ExifInterface.ORIENTATION_UNDEFINED:
break;
}
} catch (Exception e) {
e.printStackTrace();
}
Matrix matrix = new Matrix();
matrix.postRotate(90);
large_bitmap = Bitmap.createBitmap(large_bitmap, 0, 0, large_bitmap.getWidth(), large_bitmap.getHeight(), matrix, true);
horizontalList.add(large_bitmap_path);
horizontal_rv.smoothScrollBy(1000, 10);
sqLiteHelper.insertPath(large_bitmap_path, "jpg", "fileName");
}

use this library from git hub it handles all these thing related to image library link

how to apply EXIF orientation on image uri without involving bitmap?

I know applying EXIF orientation on the bitmap object, doing this -
public static Bitmap getCorrectBitmap(Bitmap bitmap, String filePath) {
ExifInterface ei;
Bitmap rotatedBitmap =bitmap;
try {
ei = new ExifInterface(filePath);
int orientation = ei.getAttributeInt(ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
Matrix matrix = new Matrix();
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
matrix.postRotate(90);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
matrix.postRotate(180);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
matrix.postRotate(270);
break;
}
rotatedBitmap = Bitmap.createBitmap(bitmap , 0, 0, bitmap .getWidth(), bitmap .getHeight(), matrix, true);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return rotatedBitmap;
}
But, what I am having is - a few rotated images (camera images) uri and their corresponding file paths (of sd card).
It will be great, if someone suggests me a good way to apply similar EXIF orientation on the image uri and getting back the correctly oriented uri.
I do not want to involve bitmap object in this process as getting bitmap of the image consumes time (about 1 second per image).

How to get the Correct orientation of the image selected from the Default Image gallery

I have gone through some of the links to get the correct image orientation of the image selected from the default image gallery to be worked standard in all devices the exif tag always returns 0.
EXIF orientation tag value always 0 for image taken with portrait camera app android
Exif orientation tag returns 0
Exif data TAG_ORIENTATION always 0
http://mobisocial.stanford.edu/news/2011/08/rotating-images-in-android/
How to get an exact solution that will work on all devices?

If the image(photo) was taken by a program made by you, you must set Parameters.setRotation with the correct rotation value.
This, depending of camera drive, rotates the image before save or save the rotation value to exif TAG_ORIENTATION.
Therefore, if TAG_ORIENTATION is null or zero, the image are in the correct orientation, otherwise you must rotate image according the value in TAG_ORIENTATION.
CODE
Get orientation from EXIF:
ExifInterface exif = null;
try {
exif = new ExifInterface(path);
} catch (IOException e) {
e.printStackTrace();
}
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_UNDEFINED);
Get bitmap rotated:
Bitmap bmRotated = rotateBitmap(bitmap, orientation);
Method to rotate bitmap:
public static Bitmap rotateBitmap(Bitmap bitmap, int orientation) {
Matrix matrix = new Matrix();
switch (orientation) {
case ExifInterface.ORIENTATION_NORMAL:
return bitmap;
case ExifInterface.ORIENTATION_FLIP_HORIZONTAL:
matrix.setScale(-1, 1);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
matrix.setRotate(180);
break;
case ExifInterface.ORIENTATION_FLIP_VERTICAL:
matrix.setRotate(180);
matrix.postScale(-1, 1);
break;
case ExifInterface.ORIENTATION_TRANSPOSE:
matrix.setRotate(90);
matrix.postScale(-1, 1);
break;
case ExifInterface.ORIENTATION_ROTATE_90:
matrix.setRotate(90);
break;
case ExifInterface.ORIENTATION_TRANSVERSE:
matrix.setRotate(-90);
matrix.postScale(-1, 1);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
matrix.setRotate(-90);
break;
default:
return bitmap;
}
try {
Bitmap bmRotated = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
bitmap.recycle();
return bmRotated;
}
catch (OutOfMemoryError e) {
e.printStackTrace();
return null;
}
}

For me ExifInterface worked quite well like this:
ExifInterface exifInterface = new ExifInterface(imagePath);
degree = Integer.parseInt(exifInterface.getAttribute(ExifInterface.TAG_ORIENTATION));
or you can try to get the details of image using MediaStore like this:
String[] orientationColumn = {MediaStore.Images.Media.ORIENTATION};
Cursor cur = managedQuery(imageUri, orientationColumn, null, null, null);
int orientation = -1;
if (cur != null && cur.moveToFirst()) {
orientation = cur.getInt(cur.getColumnIndex(orientationColumn[0]));
}
Similar Solution: ExifInterface always returns 1
Hope it helps.. :)

I followed last answer and I tried hard to create a system to manage pictures, rotate, resize, cache and load into ImageViews and I can tell it is a hell. Even when all it was done it crashes sometimes cause OutOfMemory in some devices. Answer is correct but it is difficult to manage Bitmaps in Android.
My point is do not reinvent the wheel, it has a perfect design. Google itself encourage you to use Glide. It works in one line, super easy to use, lightweight in size and functions number, it manage EXIF by default, and it use memory like a charm.. It is simply black magic coded ;)
I'm not sure if Picasso also manages EXIF, but there is a quick intro to both of them:
https://inthecheesefactory.com/blog/get-to-know-glide-recommended-by-google/en
My Advice: do not waste your time and use them. You can solve your problem in one line:
Glide.with(context).load("http://i.imgur.com/DvpvklR.png").into(imageView);

For those who come along this post, make sure to use the exifinterface from the Android Support Library that was introduced in December 2016:
compile "com.android.support:exifinterface:25.1.0" // or newer
Details about this library can be found in the according Android Developers Blog post: Introducing the ExifInterface Support Library
They also included a sample code for dealing with rotation information stored in the exif interface:
int rotation = 0;
int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
rotation = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotation = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
rotation = 270;
break;
}

The solution for me was to create the ExifInterface from the input stream. Do not try to create it from a path, which maybe a content provider path and will fail to give the correct result. Convert the orientation into degrees and rotate image if required. Below is the key code for the solution when using the support library (e.g androidx.exifinterface.media.ExifInterface).
int orientation = 0;
InputStream input = mContext.getContentResolver().openInputStream(uri);
if (input != null){
ExifInterface exif = new ExifInterface(input);
orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
input.close();
}
Here is my full code to obtain a correctly orientated bitmap selected from the Gallery, which also takes a maxsize. If using it make sure you check for the null return case.
public Bitmap getBitmapFromGalleryUri(Context mContext, Uri uri, Double maxSize)throws IOException {
int orientation = 0;
InputStream input = mContext.getContentResolver().openInputStream(uri);
if (input != null){
ExifInterface exif = new ExifInterface(input);
orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
//Log.d("Utils", "rotation value = " + orientation);
input.close();
}
input = mContext.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
try {
input.close();
} catch (NullPointerException e) {
e.printStackTrace();
}
if ((onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1)) {
return null;
}
int originalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
double ratio = (originalSize > maxSize) ? (originalSize / maxSize) : 1.0;
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio);
bitmapOptions.inDither = true; //optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//
input = mContext.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
try {
input.close();
} catch (NullPointerException e) {
e.printStackTrace();
}
Matrix matrix = new Matrix();
//Log.d("Utils", "rotation value = " + orientation);
int rotationInDegrees = exifToDegrees(orientation);
//Log.d("Utils", "rotationInDegrees value = " + rotationInDegrees);
if (orientation != 0) {
matrix.preRotate(rotationInDegrees);
}
int bmpWidth = 0;
try {
bmpWidth = bitmap.getWidth();
} catch (NullPointerException e) {
e.printStackTrace();
}
Bitmap adjustedBitmap = bitmap;
if (bmpWidth > 0) {
adjustedBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
return adjustedBitmap;
}
private static int getPowerOfTwoForSampleRatio(double ratio){
int k = Integer.highestOneBit((int)Math.floor(ratio));
if(k==0) return 1;
else return k;
}
public static int exifToDegrees(int exifOrientation) {
if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_90) { return 90; }
else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_180) { return 180; }
else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_270) { return 270; }
return 0;
}