private void InitGreenDot()
{
try
{
var l = new MyVtoOnGlobalLayoutListener();
l.GlobalLayoutEvent += (s, e) =>
{
_mapSwitcher.ViewTreeObserver.RemoveOnGlobalLayoutListener(l);
var viewLeft = _mapSwitcher.Left;
var viewTop = _mapSwitcher.Top + _mapSwitcher.Height / 3;
const int border = 100;
var xRange = Math.Max(1, _mapSwitcher.Width - border * 2);
var yRange = Math.Max(1, _mapSwitcher.Height / 3 * 2 - border * 2);
var rnd = new System.Random();
for (int i = 0, cnt = _dotCoords.GetLength(0); i < cnt; i++)
{
_dotCoords[i, 0] = viewLeft + border + rnd.Next(xRange);
_dotCoords[i, 1] = viewTop + border + rnd.Next(yRange);
}
_greenDot = FindViewById <View>(R.Id.green_dot);
_greenDot.SetX(_dotCoords[0, 0]);
_greenDot.SetY(_dotCoords[0, 1]);
};
_mapSwitcher.ViewTreeObserver.AddOnGlobalLayoutListener(l);
}
catch (Exception exc) when(exc is IndexOutOfRangeException)
{
LogW(exc.Message);
}
}
public void SetContent([DrawableRes] int resId)
{
if (_viewWidth == 0)
{
var l = new MyVtoOnGlobalLayoutListener();
l.GlobalLayoutEvent += (s, e) =>
{
ItemView.ViewTreeObserver.RemoveOnGlobalLayoutListener(l);
_viewWidth = ItemView.Width;
_viewHeight = ItemView.Height;
LoadBitmap(resId);
};
ItemView.ViewTreeObserver.AddOnGlobalLayoutListener(l);
}
else
{
LoadBitmap(resId);
}
}