how to use wallpaper manager to set wallpaper as homescreen? i have done it with a wallpaper manager but when it set it zooms too much in flutter

MaterialButton( height: 50.0, shape: CircleBorder(), onPressed: ()async {

                String url = widget.urlimage;
                var cachedimage = await DefaultCacheManager().getSingleFile(url);
                int location = WallpaperManagerFlutter.HOME_SCREEN;
                WallpaperManagerFlutter().setwallpaperfromFile(cachedimage, location);

              },
              child: Text("set"),
              color: Colors.white,
            ),