public static View ConvertFormsToNative(this Xamarin.Forms.View view)
{
var vRenderer = view.GetRenderer();
var nativeView = vRenderer.View;
return(nativeView);
}
private void HandleTouch(object sender, TouchEventArgs e)
{
switch (e.Event.Action)
{
case MotionEventActions.Down:
var loc = GetPointF(e.Event);
var o = this.GetTouchedView(loc);
this.touchedView = o != null ? o.Item1 : null;
if (this.touchedView == this.Element.Content.GetNativeContent())
{
this.touchedView = null;
}
if (this.touchedView != null)
{
this.touchedElement = this.Element.Content.FindFormsViewFromAccessibilityId(this.touchedView);
this.homePosition = new PointF(this.touchedView.GetX(), this.touchedView.GetY());
this.offsetLocation = new PointF(loc.X - o.Item2.X + homePosition.X, loc.Y - o.Item2.Y + homePosition.Y);
}
return;
case MotionEventActions.Up:
this.touchedView = null;
this.touchedElement = null;
break;
case MotionEventActions.Cancel:
this.touchedView = null;
this.touchedElement = null;
break;
case MotionEventActions.Move:
if (this.touchedView != null)
{
var newLoc = GetPointF(e.Event);
var density = Application.Context.Resources.DisplayMetrics.Density;
var x = (newLoc.X - this.offsetLocation.X) / density;
var y = (newLoc.Y - this.offsetLocation.Y) / density;
if (this.touchedElement != null)
{
var f2 = new Rectangle(new Xamarin.Forms.Point(x, y),
new Size(this.touchedElement.Width, this.touchedElement.Height));
this.touchedElement.Layout(f2);
}
//else
//{
// this.touchedView.SetX(x);
// this.touchedView.SetY(y);
//}
}
return;
}
}
//http://www.michaelridland.com/xamarin/creating-native-view-xamarin-forms-viewpage/
private ViewGroup ConvertFormsToNative(Xamarin.Forms.View view, Rectangle size)
{
var vRenderer = Platform.CreateRenderer(view);
var viewGroup = vRenderer.ViewGroup;
vRenderer.Tracker.UpdateLayout();
var layoutParams = new ViewGroup.LayoutParams((int)size.Width, (int)size.Height);
viewGroup.LayoutParameters = layoutParams;
view.Layout(size);
viewGroup.Layout(0, 0, (int)view.WidthRequest, (int)view.HeightRequest);
return(viewGroup);
}
public static View ConvertFormsToNative(this Xamarin.Forms.View view, Context context, Rectangle size)
{
var vRenderer = Platform.CreateRendererWithContext(view, context);
var viewGroup = vRenderer.View;
vRenderer.Tracker.UpdateLayout();
var layoutParams = new ViewGroup.LayoutParams((int)size.Width, (int)size.Height);
viewGroup.LayoutParameters = layoutParams;
view.Layout(size);
viewGroup.Layout(0, 0, (int)view.WidthRequest, (int)view.HeightRequest);
return(viewGroup);
}
public static View ConvertFormsToNative(this Xamarin.Forms.View view, Context context)
{
var vRenderer = view.GetRenderer();
if (vRenderer == null)
{
Platform.SetRenderer(view, Platform.CreateRendererWithContext(view, context));
vRenderer = view.GetRenderer();
}
var nativeView = vRenderer.View;
nativeView.RemoveFromParent();
vRenderer.Tracker.UpdateLayout();
return(nativeView);
}
public static View ConvertFormsToNative(Context context, Xamarin.Forms.View view, Size size, float density)
{
if (view == null)
{
return(null);
}
if (Platform.GetRenderer(view) == null)
{
Platform.SetRenderer(view, Platform.CreateRendererWithContext(view, context));
}
var vRenderer = Platform.GetRenderer(view);
var nativeView = vRenderer.View;
var dpW = size.Width > 0 ? ConvertDpToPixels(size.Width, density) : ViewGroup.LayoutParams.WrapContent;
var dpH = size.Height > 0 ? ConvertDpToPixels(size.Height, density) : ViewGroup.LayoutParams.WrapContent;
nativeView.LayoutParameters = new ViewGroup.LayoutParams(dpW, dpH);
return(nativeView);
}
