标签：hang 位置 view erer tor cal and visual llb
<ContentPage.Content>
<ScrollView Orientation="Horizontal">
<StackLayout Orientation="Horizontal">
<Label Text="123123123"></Label>
</StackLayout>
</ScrollView>
</ContentPage.Content>
其中有1个比较重要的属性Orientation可以改变滚动方向，如果你想通过代码修改当前滚动条的位置，可以使用scroll.ScrollToAsync方法来实现
如果你不想显示滚动条，那么只能在各自的Android和IOS平台实现
Android平台
[assembly:ExportRenderer(typeof(Xamarin.Forms.ScrollView),typeof(ScrollViewNoRender))]
namespace App1.Droid.Render
{
public class ScrollViewNoRender : ScrollViewRenderer
{
protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
e.NewElement.PropertyChanged -= NewElement_PropertyChanged;
}
if (e.NewElement != null)
{
e.NewElement.PropertyChanged += NewElement_PropertyChanged;
}
}
private void NewElement_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (ChildCount > 0)
{
GetChildAt(0).HorizontalScrollBarEnabled = false;
GetChildAt(0).VerticalScrollBarEnabled = false;
}
}
}
}
IOS平台
[assembly:ExportRenderer(typeof(ScrollView),typeof(ScrollViewNoRender))]
namespace App1.iOS.Render
{
public class ScrollViewNoRender : ScrollViewRenderer
{
protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
e.NewElement.PropertyChanged -= NewElement_PropertyChanged;
}
if (e.NewElement != null)
{
e.NewElement.PropertyChanged += NewElement_PropertyChanged;
}
}
private void NewElement_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
this.ShowsHorizontalScrollIndicator = false;
this.ShowsVerticalScrollIndicator = false;
}
}
}
标签：hang 位置 view erer tor cal and visual llb
原文地址：https://www.cnblogs.com/jiecaoge/p/10036113.html
