CompressEngine.java 文件源码

private Bitmap rotatingImage(Bitmap bitmap) {
    if (srcExif == null) return bitmap;

    Matrix matrix = new Matrix();
    int angle = 0;
    int orientation = srcExif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
    switch (orientation) {
        case ExifInterface.ORIENTATION_ROTATE_90:
            angle = 90;
            break;
        case ExifInterface.ORIENTATION_ROTATE_180:
            angle = 180;
            break;
        case ExifInterface.ORIENTATION_ROTATE_270:
            angle = 270;
            break;
    }

    matrix.postRotate(angle);

    return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}