Resize wallpaper to fit screen without cropping or scaling?

Question

I am setting an image from within my application as wallpaper it is working fine on my nokia 5 and image is being set and is filling the entire view but when i try to run the same code on huawei honor 5x or nexus 4 the image is enlarged and goes out of the home screen.

private Bitmap getResizedBitmap(Bitmap bm, int newHeight, int newWidth) {
        
        int width = bm.getWidth();
        int height = bm.getHeight();
       
       
        float scaleWidth = ((float) newWidth) / width;
        float scaleHeight = ((float) newHeight) / height;
        // create a matrix for the manipulation
        Matrix matrix = new Matrix();
        // resize the bit map
        matrix.postScale(scaleWidth, scaleHeight);

        // recreate the new Bitmap
        Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, true);

        return resizedBitmap;
    }