我是Xamarin IOS的新手我尝试将stackView放入scrollView。然后我产生了这段代码。
public class ViewCategory : UIViewController, IIndicatorInfoProvider
{
public override string Title { get; set; }
public UIColor Color { get; set; }
public string Text { get; set; }
public string Image { get; set; }
public UIScrollView _scrollView;
public UIStackView _stackView;
public ViewCategory(IntPtr handle) : base(handle) { }
public ViewCategory(string title, UIColor color, string text, string image)
{
this.Title = title;
this.Color = color;
this.Text = text;
this.Image = image;
}
public IndicatorInfo IndicatorInfoForPagerTabStrip(PagerTabStripViewController pagerTabStripController)
{
return new IndicatorInfo(Title);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
_scrollView = new UIScrollView();
_stackView = new UIStackView();
_stackView.Frame = new CGRect(0, 0, UIScreen.MainScreen.Bounds.Size.Width, UIScreen.MainScreen.Bounds.Size.Height);
_stackView.Axis = UILayoutConstraintAxis.Vertical;
_stackView.Spacing = 10;
// Image
var image = new UIImageView(UIImage.FromBundle(this.Image));
image.Frame = new Rectangle(0, 0, (int)View.Frame.Width, 150);
image.ContentMode = UIViewContentMode.ScaleAspectFit;
_stackView.AddArrangedSubview(image);
//// define coordinates and size of the circular view
//// define coordinates and size of the circular view
float height = 80;
float width = (float)UIScreen.MainScreen.Bounds.Size.Width * 2 + 40;
float x = (width / 4 * -1) - 10;
float y = 100 + ((100 - height) / 2);
// corner radius needs to be one half of the size of the view
RectangleF frame = new RectangleF(x, y, width, height);
// initialize button
UIButton circularView = new UIButton(frame);
// set corner radius
circularView.Layer.CornerRadius = width / 2;
// set background color, border color and width to see the circular view
circularView.BackgroundColor = UIColor.Blue;
circularView.Layer.BorderColor = UIColor.White.CGColor;
circularView.Layer.BorderWidth = 1;
// add button to view controller
_stackView.AddArrangedSubview(circularView);
var pg_top_background = new UIImageView(UIImage.FromBundle("cat_gauge_top_background.png"));
pg_top_background.Frame = new CGRect((UIScreen.MainScreen.Bounds.Size.Width - pg_top_background.Image.Size.Width) / 2, 150, pg_top_background.Image.Size.Width, pg_top_background.Image.Size.Height);
_stackView.AddArrangedSubview(pg_top_background);
var pg_top_foreground = new UIImageView(UIImage.FromBundle("cat_gauge_top_general.png"));
pg_top_foreground.Frame = new CGRect((UIScreen.MainScreen.Bounds.Size.Width - pg_top_foreground.Image.Size.Width) / 2, 150, pg_top_foreground.Image.Size.Width, pg_top_foreground.Image.Size.Height);
_stackView.AddArrangedSubview(pg_top_foreground);
var pg_bottom_background = new UIImageView(UIImage.FromBundle("cat_gauge_bottom_background.png"));
pg_bottom_background.Frame = new CGRect((UIScreen.MainScreen.Bounds.Size.Width - pg_bottom_background.Image.Size.Width) / 2, 150 + pg_top_foreground.Image.Size.Height + 5, pg_bottom_background.Image.Size.Width, pg_bottom_background.Image.Size.Height);
_stackView.AddArrangedSubview(pg_bottom_background);
var pg_bottom_foreground = new UIImageView(UIImage.FromBundle("cat_gauge_bottom_foreground.png"));
pg_bottom_foreground.Frame = new CGRect((UIScreen.MainScreen.Bounds.Size.Width - pg_bottom_foreground.Image.Size.Width) / 2, 150 + pg_top_foreground.Image.Size.Height + 5, pg_bottom_foreground.Image.Size.Width, pg_bottom_foreground.Image.Size.Height);
_stackView.AddArrangedSubview(pg_bottom_foreground);
var label = new UILabel();
label.Text = this.Text;
label.Font = label.Font.WithSize(12);
label.Frame = new CGRect(0, 180, 100, 20);
//label.TextAlignment = UITextAlignment.Center;
label.Center = new CGPoint(UIScreen.MainScreen.Bounds.Size.Width / 2, label.Frame.Y);
_stackView.AddArrangedSubview(label);
_scrollView.AddSubview(_stackView);
_scrollView.Frame = new RectangleF(0, 0, (float)View.Frame.Width, (float)_stackView.Frame.Height);
_scrollView.ContentSize = new SizeF((float)View.Frame.Width, (float)((float)_stackView.Frame.Height + 50));
View.AddSubview(_scrollView);
}
}
我不明白的一件事。为什么我必须将我的元素放在我的堆栈中,如果它感觉像是一个堆栈布局: 元素A. 元素B. 元素C
然后我绘制一幅图像,如果图像真的很大,其他元素就无法显示。
有人可以帮助我吗?
由于