Created
December 7, 2016 07:14
-
-
Save wangchauyan/3b851a446b46b8bbfdf3a7f59def8fc9 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// consider about this url : http://sylvana.net/jpegcrop/exif_orientation.html | |
// you might consider when you get your image's exif information, | |
// check the orientation tag, it usually is 1, 3, 6, 8 | |
// So, rotate it. | |
BitmapFactory.Options options = new BitmapFactory.Options(); | |
options.inJustDecodeBounds = true; | |
BitmapFactory.decodeFile(path, options); | |
// Calculate inSampleSize, I didn't publish this funciton, but it's easy, just input request width / height | |
options.inSampleSize = calculateInSampleSize(options, 150, 150); | |
// Decode bitmap with inSampleSize set | |
options.inJustDecodeBounds = false; | |
Bitmap bitmap = BitmapFactory.decodeFile(path, options); | |
// make sure we got correct rotation | |
ExifInterface exif = new ExifInterface(path); | |
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1); | |
Matrix matrix = new Matrix(); | |
if (orientation == 6) { | |
matrix.postRotate(90); | |
} | |
else if (orientation == 3) { | |
matrix.postRotate(180); | |
} | |
else if (orientation == 8) { | |
matrix.postRotate(270); | |
} | |
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment