public App()
{
usernameentry = new MyEntry ();
usernameentry.WidthRequest = 100;
usernameentry.HeightRequest = 40;
usernameentry.Placeholder="username";
usernameentry.Top = 10;
usernameentry.BackgroundColor = Color.Yellow;
passentry = new MyEntry ();
passentry.WidthRequest = 100;
passentry.HeightRequest = 40;
passentry.Placeholder = "Password";
passentry.MarginTop = 20;
passentry.BackgroundColor = Color.FromRgb (102, 204, 255);
myStacklayout stacklayout = new myStacklayout ();
stacklayout.BackgroundColor=Color.FromRgb (170, 221, 255);
stacklayout.WidthRequest = 200;
stacklayout.HeightRequest = 100;
stacklayout.Top = 200;
stacklayout.addview (usernameentry);
stacklayout.addview (passentry);
relativelayout.addview (stacklayout);
okbut = new MyButton ();
okbut.HeightRequest = 40;
okbut.WidthRequest = 100;
okbut.Top = 400;
okbut.Text="Ok";
okbut.TextColor=Color.FromRgb (102, 204, 255);
okbut.BorderColor= Color.FromRgb (102, 204, 255);
okbut.BorderRadius = 2;
okbut.BackgroundColor= Color.White;
okbut.BorderWidth = 1;
relativelayout.addview (okbut);
}
public void addview(myStacklayout stacklayout,View view)
{
if (stacklayout.hasrelativelayout ()) {
Constraint x = Constraint.RelativeToView (view,
(parent, sibling) => {
return sibling.X + sibling.Width + (stacklayout.MarginLeft.HasValue ? stacklayout.MarginLeft.Value : 0);
});
Constraint y = Constraint.RelativeToView (view,
(parent, sibling) => {
return sibling.X + sibling.Width + (stacklayout.MarginTop.HasValue ? stacklayout.MarginTop.Value : 0);
});
this.Children.Add (stacklayout, x, y);
}
}
public void addview(myStacklayout stacklayout)
{
Constraint y=Constraint.RelativeToParent (
(parent) => { return parent.Height / 2 - stacklayout.HeightRequest/2; } );
Constraint x=Constraint.RelativeToParent (
(parent) => { return parent.Width / 2 - stacklayout.WidthRequest/2; } );
if (stacklayout.Top.HasValue) {
y = Constraint.RelativeToParent (
(parent) => { return stacklayout.Top.HasValue?stacklayout.Top.Value:0; } );
}
this.Children.Add (stacklayout, x, y);
}
