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Android code to rotate an image based on exif information
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| // imports | |
| public class ImageRotator { | |
| public static Bitmap rotateImage(String path) throws IOException { | |
| Bitmap bitmap = BitmapFactory.decodeFile(path); | |
| return rotateImage(bitmap); | |
| } | |
| public static Bitmap rotateImage(Bitmap bitmap) throws IOException { | |
| int rotate = 0; | |
| ExifInterface exif; | |
| exif = new ExifInterface(path); | |
| int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, | |
| ExifInterface.ORIENTATION_NORMAL); | |
| 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; | |
| } | |
| Matrix matrix = new Matrix(); | |
| matrix.postRotate(rotate); | |
| return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), | |
| bitmap.getHeight(), matrix, true); | |
| } | |
| } |
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