Miui 10.2.2 or above photo rotation problem and solution on Mi phones

Problem Description

• The problem that occurs on Xiaomi phones with miui10.2.2 or above: When calling the phone album to select photos taken with the phone, the pictures will rotate after the photos are compressed.

Solution:

• Then get the angle of rotation, and then rotate the picture back.

  1. Get the photo rotation angle, the code is as follows:

   public static int readPicDegree(String fileName) {
      int rotate = 0;
      try {
          ExifInterface exifInterface = new ExifInterface(fileName);
          int result = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION,
                  ExifInterface.ORIENTATION_UNDEFINED);
          switch (result) {
              case ExifInterface.ORIENTATION_ROTATE_90:
                  rotate = 90;
                  break;
              case ExifInterface.ORIENTATION_ROTATE_180:
                  rotate = 180;
                  break;
              case ExifInterface.ORIENTATION_ROTATE_270:
                  rotate = 270;
                  break;
              default:
                  break;
          }
      } catch (Exception e) {
      }
      return rotate;
  }
  

  2. Rotate the picture, the code is as follows:

    public static Bitmap rotatePic(String fileName) {
      Bitmap bitmap = BitmapFactory.decodeFile(fileName);
      int width = bitmap.getWidth();
      int height = bitmap.getHeight();
      Matrix matrix = new Matrix();
      matrix.postRotate(readPicDegree(fileName));
      bitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
      return bitmap;
  }
  

  ---

  Some mobile phones also rotate after taking pictures, you can also use this method for processing