标签：ack you seconds eps activity set its round nal
<ContentPage.Content>
<AbsoluteLayout>
<BoxView BackgroundColor="Red" AbsoluteLayout.LayoutBounds="0,0,1,1" AbsoluteLayout.LayoutFlags="All">
</BoxView>
<BoxView BackgroundColor="White" AbsoluteLayout.LayoutBounds="0.5,0.5,100,100" AbsoluteLayout.LayoutFlags="PositionProportional"></BoxView>
<BoxView BackgroundColor="Blue" AbsoluteLayout.LayoutBounds="0,1,1,100" AbsoluteLayout.LayoutFlags="PositionProportional,WidthProportional"></BoxView>
</AbsoluteLayout>
</ContentPage.Content>
AbsoluteLayout abs = new AbsoluteLayout();
{
BoxView b = new BoxView() { BackgroundColor = Color.Red };
AbsoluteLayout.SetLayoutBounds(b, new Rectangle(0, 0, 1, 1));
AbsoluteLayout.SetLayoutFlags(b, AbsoluteLayoutFlags.All);
abs.Children.Add(b);
}
{
BoxView b = new BoxView() { BackgroundColor = Color.White };
AbsoluteLayout.SetLayoutBounds(b, new Rectangle(0.5, 0.5, 100, 100));
AbsoluteLayout.SetLayoutFlags(b, AbsoluteLayoutFlags.PositionProportional);
abs.Children.Add(b);
}
{
BoxView b = new BoxView() { BackgroundColor = Color.Blue };
AbsoluteLayout.SetLayoutBounds(b, new Rectangle(0, 1, 1, 60));
AbsoluteLayout.SetLayoutFlags(b, AbsoluteLayoutFlags.PositionProportional | AbsoluteLayoutFlags.WidthProportional);
abs.Children.Add(b);
}
this.Content = abs;
AbsoluteLayout.LayoutBounds="0,0,1,1" AbsoluteLayout.LayoutFlags="All"
其中AbsoluteLayout.LayoutBounds="0,0,1,1"代表X,Y,宽度，高度AbsoluteLayout.LayoutFlags="All"代表狂傲和Xy是以百分比的形式还是以像素点的形式显示，ALL代表全部都是百分比的形式
ALL代表所有的XY宽高都是以百分比的形式
PositionProportional代表XY是以百分比的形式
WidthProportional 代表宽度是以百分比的形式
None 代表所有的都不是以百分比的形式
HeightProportional 代表高度是以百分比的形式
XProportional 代表X轴是以百分比的形式
YProportional 代表Y周是以百分比的形式
SizeProportional 代表大小是以百分比的形式
<ContentPage.Content>
<AbsoluteLayout>
<Image Source="http://i1.umei.cc/uploads/tu/201811/9999/b21a1c8366.jpg" AbsoluteLayout.LayoutBounds="0,0,1,1" AbsoluteLayout.LayoutFlags="All">
</Image>
<BoxView BackgroundColor="Black" Opacity="0.5" AbsoluteLayout.LayoutBounds="0,0,1,1" AbsoluteLayout.LayoutFlags="All"></BoxView>
<ActivityIndicator IsRunning="True" Color="White" AbsoluteLayout.LayoutBounds="0.5,0.5,0.1,0.1" AbsoluteLayout.LayoutFlags="All"></ActivityIndicator>
</AbsoluteLayout>
</ContentPage.Content>
in int sleepsecount = int.MaxValue;
int waitsecount = 0;
public MainPage()
{
InitializeComponent();
Device.StartTimer(TimeSpan.FromSeconds(1), () =>
{
this.label1.Text = waitsecount.ToString();
return waitsecount++ < sleepsecount;
});
}
xamarin.form absolutelayout和Device.StartTimer
标签：ack you seconds eps activity set its round nal
原文地址：https://www.cnblogs.com/jiecaoge/p/10025941.html
