protected override void OnElementChanged(ElementChangedEventArgs <IOSWelcomView> e)
{
base.OnElementChanged(e);
if (Control == null)
{
if (e.OldElement == null)
{
screenWidth = UIScreen.MainScreen.Bounds.Width;
screenHeight = UIScreen.MainScreen.Bounds.Height;
InitImages();
AddScrollView();
AddImageViews();
AddPageControl();
AddGoMainButton();
SetDefaultImage();
}
else
{
scrollView.DecelerationEnded -= ScrollView_DecelerationEnded;;
scrollView.DraggingStarted -= ScrollView_DraggingStarted;;
scrollView.DraggingEnded -= ScrollView_DraggingEnded;
scrollView.Dispose();
pageControl.Dispose();
this.Dispose();
}
}
}
void CleanUpPageControl()
{
if (pageControl != null)
{
pageControl.RemoveFromSuperview();
pageControl.Dispose();
pageControl = null;
}
}
protected override void Dispose(bool disposing)
{
if (disposing && !_disposed)
{
if (pageController != null)
{
pageController.DidFinishAnimating -= PageController_DidFinishAnimating;
pageController.GetPreviousViewController = null;
pageController.GetNextViewController = null;
foreach (var child in pageController.ViewControllers)
{
child.Dispose();
}
pageController.Dispose();
pageController = null;
}
if (pageControl != null)
{
pageControl.Dispose();
pageControl = null;
}
if (Element != null)
{
Element.SizeChanged -= Element_SizeChanged;
if (Element.ItemsSource != null && Element.ItemsSource is INotifyCollectionChanged)
{
((INotifyCollectionChanged)Element.ItemsSource).CollectionChanged -= ItemsSource_CollectionChanged;
}
}
Source = null;
_disposed = true;
}
try
{
base.Dispose(disposing);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return;
}
}
protected override void Dispose(bool disposing)
{
if (disposing && !_disposed)
{
if (pageController != null)
{
pageController.GetPresentationCount = null;
pageController.GetPresentationIndex = null;
pageController.DidFinishAnimating -= PageController_DidFinishAnimating;
pageController.GetPreviousViewController = null;
pageController.GetNextViewController = null;
foreach (var child in pageController.ViewControllers)
{
child.Dispose();
}
pageController.Dispose();
pageController = null;
}
if (pageControl != null)
{
pageControl.Dispose();
pageControl = null;
}
if (nativeView != null)
{
nativeView.Dispose();
nativeView = null;
}
_disposed = true;
}
try
{
base.Dispose(disposing);
}
catch (Exception ex)
{
return;
}
}
protected override void Dispose(bool disposing)
{
if (disposing && !_disposed)
{
if (pageController != null)
{
pageController.DidFinishAnimating -= PageController_DidFinishAnimating;
pageController.GetPreviousViewController = null;
pageController.GetNextViewController = null;
foreach (var child in pageController.ViewControllers)
{
child.Dispose();
}
pageController.Dispose();
pageController = null;
}
if (pageControl != null)
{
pageControl.Dispose();
pageControl = null;
}
Source = null;
_disposed = true;
}
try
{
base.Dispose(disposing);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return;
}
}
private void setScroll(float w, float h)
{
heightscroll = h - 45; //this.View.Bounds.Height;
widthscroll = w; //this.View.Bounds.Width;;
if (sramdom != null)
{
foreach (UIView v in sramdom)
{
v.RemoveFromSuperview();
v.Dispose();
}
sramdom.RemoveFromSuperview();
sramdom.Dispose();
sramdom = null;
}
if (pageControl != null)
{
pageControl.RemoveFromSuperview();
pageControl.Dispose();
pageControl = null;
}
sramdom = new UIScrollView(new RectangleF(0, 0, widthscroll, heightscroll));
try {
if (dataPos.galerias.Count <= 0)
{
UIImageView imgViewMainImage = new UIImageView(UIImage.FromFile("images/NOIMG.png"));
imgViewMainImage.Frame = this.View.Frame;
imgViewMainImage.ContentMode = UIViewContentMode.ScaleAspectFit;
imgViewMainImage.UserInteractionEnabled = true;
this.View.AddSubview(imgViewMainImage);
return;
}
// UIImage image;
var sw = this.View.Bounds.Width;
//if (w == 1024)
// w = 850;
pageControl = new UIPageControl(new RectangleF(0, heightscroll - 100, w, 20));
pageControl.AutoresizingMask = UIViewAutoresizing.FlexibleWidth;
// vistaImagenes = new UIView (new RectangleF (0, 0, 320 , 367));
//MyScrollView = new UIScrollView (new RectangleF (0, 0,320 , 367));
//pageControl.BackgroundColor = UIColor.Gray;// .Clear ;
RectangleF scrollFrame = sramdom.Frame;
//MyScrollView.BackgroundColor =UIColor.Green ;
//if (gal.Count <= 5)
scrollFrame.Width = scrollFrame.Width * dataPos.galerias.Count;
//else
// scrollFrame.Width = scrollFrame.Width * 5;
sramdom.Scrolled += delegate(object sender, EventArgs e) {
try {
double page = Math.Floor((sramdom.ContentOffset.X - sramdom.Frame.Width / 2) / sramdom.Frame.Width) + 1;
pageControl.CurrentPage = (int)page;
positionImg = (int)page;
} catch {
}
};
pageControl.ValueChanged += delegate(object sender, EventArgs e) {
var pc = (UIPageControl)sender;
double fromPage = Math.Floor((sramdom.ContentOffset.X - sramdom.Frame.Width / 2) / sramdom.Frame.Width) + 1;
var toPage = pc.CurrentPage;
var pageOffset = sramdom.Frame.Width * toPage;
if (fromPage > toPage)
{
pageOffset = sramdom.ContentOffset.X - sramdom.Frame.Width;
}
PointF p = new PointF(pageOffset, 0);
sramdom.SetContentOffset(p, true);
//btnaddItinerary.SetTitle ("+ Bookmark", UIControlState.Normal);
};
pageControl.Hidden = false;
pageControl.Pages = dataPos.galerias.Count;
// else
// pageControl.Pages = 5;//maximo 5 imagenes
sramdom.BackgroundColor = base.headerColor;
sramdom.PagingEnabled = true;
sramdom.ContentSize = scrollFrame.Size;
sramdom.ShowsHorizontalScrollIndicator = false;
//sramdom.AutoresizingMask = UIViewAutoresizing.All;
RectangleF frame = sramdom.Frame;
frame.X = 0;
int i = 0;
foreach (galeriaImagenes g in dataPos.galerias)
{
System.Drawing.RectangleF Fr = new System.Drawing.RectangleF(frame.Width * i, 0, widthscroll, heightscroll);
UIImageView imgViewMainImage = new UIImageView(); //(UIImage.FromFile("images/"+namebigPicture));
imgViewMainImage.Frame = Fr;
imgViewMainImage.ContentMode = UIViewContentMode.ScaleAspectFill; // .ScaleToFill;
imgViewMainImage.UserInteractionEnabled = true;
imgViewMainImage.Tag = i;
sramdom.InsertSubview(imgViewMainImage, 0);
object[] on = new object[2];
on [0] = imgViewMainImage;
on [1] = g;
System.Threading.ThreadPool.QueueUserWorkItem(RequestImage, on);
i++;
}
this.View.AddSubview(sramdom);
this.View.AddSubview(pageControl);
} catch {
}
}