// Returns the degrees in clockwise. Values are 0, 90, 180, or 270.
public static int getOrientation(ExifInterface exif) {
Integer val = exif.getTagIntValue(ExifInterface.TAG_ORIENTATION);
if (val == null) {
return 0;
} else {
return ExifInterface.getRotationForOrientationValue(val.shortValue());
}
}
// group index
public static int getGroupIndex(ExifInterface exif) {
Integer val = exif.getTagIntValue(ExifInterface.TAG_GROUP_INDEX);
if (val == null) {
return 0;
} else {
Log.i(TAG, "group index = " + val.intValue());
return val.intValue();
}
}
private static int getRotationFromExifHelper(
String path, Resources res, int resId, Context context, Uri uri) {
ExifInterface ei = new ExifInterface();
try {
if (path != null) {
ei.readExif(path);
} else if (uri != null) {
InputStream is = context.getContentResolver().openInputStream(uri);
BufferedInputStream bis = new BufferedInputStream(is);
ei.readExif(bis);
} else {
InputStream is = res.openRawResource(resId);
BufferedInputStream bis = new BufferedInputStream(is);
ei.readExif(bis);
}
Integer ori = ei.getTagIntValue(ExifInterface.TAG_ORIENTATION);
if (ori != null) {
return ExifInterface.getRotationForOrientationValue(ori.shortValue());
}
} catch (IOException e) {
Log.w(LOGTAG, "Getting exif data failed", e);
}
return 0;
}