标签：ESS 高度 ntp 设置 nta page 位置 etop htc
<ContentPage.Content>
<RelativeLayout>
<BoxView Color="Red"
RelativeLayout.YConstraint="{ConstraintExpression Type=RelativeToParent,Property=Height,Factor=0.15,Constant=0}"
RelativeLayout.XConstraint="{ConstraintExpression Type=RelativeToParent,Property=Width,Factor=0.15,Constant=0}"
RelativeLayout.HeightConstraint="{ConstraintExpression Type=RelativeToParent,Property=Height,Factor=0.7,Constant=0}"
RelativeLayout.WidthConstraint="{ConstraintExpression Type=RelativeToParent,Property=Width,Factor=0.7,Constant=0}"
>
</BoxView>
</RelativeLayout>
</ContentPage.Content>
可以设置4个属性YConstraint，XConstraint，HeightConstraint，WidthConstraint
其中Contant是按照像素点偏移的值，Type是针对哪个控件的偏移有RelativeToParent和RelativeToView，ElementName是针对哪个控件做偏移只有在ReleativeToView的时候用到，Property是针对控件的哪个属性做偏移，
ConstraintExpression Type=RelativeToParent,Property=Height,Factor=0.15,Constant=0的意思是针对上层元素的高度，用高度*0.15+0的实际位置
BoxView b = new BoxView() { BackgroundColor = Color.Red };
relative1.Children.Add(b
, Constraint.RelativeToParent((parent) =>
{
return parent.X * 0.5;
})
, Constraint.RelativeToParent((parent) =>
{
return parent.Y * 0.5;
})
, Constraint.RelativeToParent((parent) =>
{
return parent.X * 0.5;
})
, Constraint.RelativeToParent((parent) =>
{
return parent.X * 0.5;
})
);
标签：ESS 高度 ntp 设置 nta page 位置 etop htc
原文地址：https://www.cnblogs.com/jiecaoge/p/10029965.html
