SlidingMenu.cs

        protected override bool FitSystemWindows(Rect insets)
        {
            if (!this._mActionbarOverlay)
            {
                Log.Verbose(Tag, "setting padding");

                int bottomPadding = insets.Bottom;

                // TODO: Warning !! next version could be compromised
                if (Build.VERSION.SdkInt == BuildVersionCodes.Lollipop)
                {
                    var resources = this.GetContent().Resources;
                    int resourceId = resources.GetIdentifier("navigation_bar_height", "dimen", "android");
                    if (resourceId > 0)
                    {
                        bottomPadding += resources.GetDimensionPixelSize(resourceId);
                    }
                }

                this.SetPadding(insets.Left, insets.Top, insets.Right, bottomPadding);
            }

            return true;
        }