C# UILabel.AtLeftOf方法代码示例

        public override void LoadView ()
        {
            View = new UIImageView () {
                UserInteractionEnabled = true,
            } .Apply (Style.Welcome.Background);
            View.Add (logoImageView = new UIImageView ().Apply (Style.Welcome.Logo));
            View.Add (sloganLabel = new UILabel () {
                Text = "WelcomeSlogan".Tr (),
            } .Apply (Style.Welcome.Slogan));
            View.Add (createButton = new UIButton ().Apply (Style.Welcome.CreateAccount));
            View.Add (passwordButton = new UIButton ().Apply (Style.Welcome.PasswordLogin));
            View.Add (googleButton = new UIButton ().Apply (Style.Welcome.GoogleLogin));

            createButton.SetTitle ("WelcomeCreate".Tr (), UIControlState.Normal);
            passwordButton.SetTitle ("WelcomePassword".Tr (), UIControlState.Normal);
            googleButton.SetTitle ("WelcomeGoogle".Tr (), UIControlState.Normal);

            createButton.TouchUpInside += OnCreateButtonTouchUpInside;
            passwordButton.TouchUpInside += OnPasswordButtonTouchUpInside;
            googleButton.TouchUpInside += OnGoogleButtonTouchUpInside;

            View.AddConstraints (
                logoImageView.AtTopOf (View, 70f),
                logoImageView.WithSameCenterX (View),

                sloganLabel.Below (logoImageView, 18f),
                sloganLabel.AtLeftOf (View, 25f),
                sloganLabel.AtRightOf (View, 25f),

                googleButton.AtBottomOf (View, 20f),
                googleButton.AtLeftOf (View),
                googleButton.AtRightOf (View),
                googleButton.Height ().EqualTo (60f),

                passwordButton.Above (googleButton, 25f),
                passwordButton.AtLeftOf (View),
                passwordButton.AtRightOf (View),
                passwordButton.Height ().EqualTo (60f),

                createButton.Above (passwordButton, 5f),
                createButton.AtLeftOf (View),
                createButton.AtRightOf (View),
                createButton.Height ().EqualTo (60f)
            );

            View.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints ();
        }

		private void SetupCell(){
			BackgroundColor = MobileCore.Values.Colors.BrownGray.ToNative ();

			Header = new UILabel{ 
				Frame = new RectangleF(0, 0, UIScreen.MainScreen.Bounds.Width, Constants.Layout.MinimumTouchControlSize),
				TextColor = MobileCore.Values.Colors.White.ToNative(),
				Lines = 0,
				TextAlignment = UITextAlignment.Left
			};

			Add (Header);

			this.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints ();

			this.AddConstraints (
				Header.AtLeftOf(this, Constants.Layout.HorizontalPadding),
				Header.AtRightOf(this),
				Header.WithSameHeight(this)
			);
		}

            private static void ConstructDateTimeView (UIView view, ref UILabel dateLabel, ref UILabel timeLabel)
            {
                view.Add (dateLabel = new UILabel ().Apply (Style.EditTimeEntry.DateLabel));
                view.Add (timeLabel = new UILabel ().Apply (Style.EditTimeEntry.TimeLabel));
                view.AddConstraints (
                    dateLabel.AtTopOf (view, 10f),
                    dateLabel.AtLeftOf (view, 10f),
                    dateLabel.AtRightOf (view, 10f),

                    timeLabel.Below (dateLabel, 2f),
                    timeLabel.AtBottomOf (view, 10f),
                    timeLabel.AtLeftOf (view, 10f),
                    timeLabel.AtRightOf (view, 10f)
                );
                view.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints ();
            }

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();

            View.BackgroundColor = UIColorHelpers.GetRandomColor();

            var label = new UILabel();
            Title = label.Text = $"Page {Number}";

            Add(label);

            View.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();

            View.AddConstraints(
                label.AtTopOf(View, 10f),
                label.AtLeftOf(View, 10f),
                label.AtRightOf(View, 10f));
        }

        public override void ViewDidLoad()
        {
            View.BackgroundColor = UIColor.White;
            base.ViewDidLoad();

            // ios7 layout
            if (RespondsToSelector(new Selector("edgesForExtendedLayout")))
                EdgesForExtendedLayout = UIRectEdge.None;

            var fNameLabel = new UILabel {Text = "First"};
            Add(fNameLabel);

            var sNameLabel = new UILabel {Text = "Last"};
            Add(sNameLabel);

            var numberLabel = new UILabel {Text = "#"};
            Add(numberLabel);

            var streetLabel = new UILabel {Text = "Street"};
            Add(streetLabel);

            var townLabel = new UILabel {Text = "Town"};
            Add(townLabel);

            var zipLabel = new UILabel {Text = "Zip"};
            Add(zipLabel);

            var fNameField = new UITextField() { BackgroundColor = UIColor.LightGray, BorderStyle = UITextBorderStyle.RoundedRect };
            Add(fNameField);

            var sNameField = new UITextField() { BackgroundColor = UIColor.LightGray, BorderStyle = UITextBorderStyle.RoundedRect };
            Add(sNameField);

            var numberField = new UITextField() { BackgroundColor = UIColor.LightGray, BorderStyle = UITextBorderStyle.RoundedRect };
            Add(numberField);

            var streetField = new UITextField() { BackgroundColor = UIColor.LightGray, BorderStyle = UITextBorderStyle.RoundedRect };
            Add(streetField);

            var townField = new UITextField() { BackgroundColor = UIColor.LightGray, BorderStyle = UITextBorderStyle.RoundedRect };
            Add(townField);

            var zipField = new UITextField() { BackgroundColor = UIColor.LightGray, BorderStyle = UITextBorderStyle.RoundedRect };
            Add(zipField);

            var debug = new UILabel() { BackgroundColor = UIColor.White, Lines = 0 };
            Add(debug);

            var set = this.CreateBindingSet<FormView, FormViewModel>();
            set.Bind(fNameField).To(vm => vm.FirstName);
            set.Bind(sNameField).To(vm => vm.LastName);
            set.Bind(numberField).To(vm => vm.Number);
            set.Bind(streetField).To(vm => vm.Street);
            set.Bind(townField).To(vm => vm.Town);
            set.Bind(zipField).To(vm => vm.Zip);
            set.Bind(debug).To("FirstName  + ' ' + LastName + ', '  + Number + ' ' + Street + ' ' + Town + ' ' + Zip");
            set.Apply();

            View.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();

            var hMargin = 10;
            var vMargin = 10;


            View.AddConstraints(

                fNameLabel.AtTopOf(View, vMargin),
                fNameLabel.AtLeftOf(View, hMargin),
                fNameLabel.ToLeftOf(sNameLabel, hMargin),

                sNameLabel.WithSameTop(fNameLabel),
                sNameLabel.AtRightOf(View, hMargin),
                sNameLabel.WithSameWidth(fNameLabel),

                fNameField.WithSameWidth(fNameLabel),
                fNameField.WithSameLeft(fNameLabel),
                fNameField.Below(fNameLabel, vMargin),

                sNameField.WithSameLeft(sNameLabel),
                sNameField.WithSameWidth(sNameLabel),
                sNameField.WithSameTop(fNameField),

                numberLabel.WithSameLeft(fNameLabel),
                numberLabel.ToLeftOf(streetLabel, hMargin),
                numberLabel.Below(fNameField, vMargin),
                numberLabel.WithRelativeWidth(streetLabel, 0.3f),

                streetLabel.WithSameTop(numberLabel),
                streetLabel.AtRightOf(View, hMargin),

                numberField.WithSameLeft(numberLabel),
                numberField.WithSameWidth(numberLabel),
                numberField.Below(numberLabel, vMargin),

                streetField.WithSameLeft(streetLabel),
                streetField.WithSameWidth(streetLabel),
                streetField.WithSameTop(numberField),

                townLabel.WithSameLeft(fNameLabel),
                townLabel.WithSameRight(streetLabel),
//.........这里部分代码省略.........

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();
            View.BackgroundColor = UIColor.Blue;
            TheViewController = this;

            //Enumerate SVG with BundleResource action in the Resources/svg folder
            //var path = Path.Combine(NSBundle.MainBundle.BundlePath,"svg");
            var bundleSvgs = new List<string>(); //Directory.EnumerateFiles(path, "*.svg").Select(Path.GetFileName).OrderBy(s => s).ToList();

            //Enumerate SVG with EmbeddedResource action in the XamSvgDemo.Shared project, in the images folder.
            var assembly = typeof (App).GetTypeInfo().Assembly;
            var sharedSvgs = assembly.GetManifestResourceNames().Where(n => n.EndsWith(".svg")).OrderBy(n => n).ToArray();

            //Combine both lists
            var svgNames = bundleSvgs.Select(s => "svg/" + s).Concat(
                            sharedSvgs.Select(s => "res:" + s)
                            ).ToList();

            var index = 0;

#if !USEAUTOLAYOUT
            //Fix width, let height be changed by UISvgImageView
            var bounds = UIScreen.MainScreen.Bounds;
            image = new UISvgImageView(svgNames[index], bounds.Width, 0) { Frame = new CGRect(0,0,bounds.Width, bounds.Height) };
#else
            image = new UISvgImageView(svgNames[index]);
#endif

            image.Layer.BorderWidth = 1;
            image.Layer.BorderColor = UIColor.Green.CGColor;
            View.Add(image);

            title = new UILabel
            {
                TextColor=UIColor.White,
                Font = UIFont.SystemFontOfSize(14f),
                LineBreakMode = UILineBreakMode.CharacterWrap,
                Lines = 0,
#if !USEAUTOLAYOUT
                Frame = new CGRect(0,30,320,100),
#endif
            };
            View.Add(title);

#if USEAUTOLAYOUT
            var back = new UIView {BackgroundColor = UIColor.DarkGray.ColorWithAlpha(.6f)};
            var back2 = new UIView { BackgroundColor = UIColor.Clear };
            var inputUrl = new UITextField
            {
                TextColor = UIColor.White, Font = UIFont.SystemFontOfSize(14f),

                AttributedPlaceholder = new NSMutableAttributedString("Enter url of svg file, or tap anywhere for demo",
                    foregroundColor: UIColor.Gray, font: UIFont.ItalicSystemFontOfSize(12)),
                KeyboardType = UIKeyboardType.Url, AutocorrectionType = UITextAutocorrectionType.No,
                AutocapitalizationType = UITextAutocapitalizationType.None,
                //ReturnKeyType = UIReturnKeyType.Go,
                //EnablesReturnKeyAutomatically = true, ShouldReturn = 
            };
            //var inputOk = new UISvgImageView("res:images.download", 25, colorMapping: "000000=FF546D", colorMappingSelected: "000000=00FF59")
            //{
            //    UserInteractionEnabled = true,
            //};
            var inputOk = new UISvgImageView
            {
                UserInteractionEnabled = true,
                TranslatesAutoresizingMaskIntoConstraints = false,
                FillWidth = 25,
                ColorMapping="000000=FF546D",
                ColorMappingSelected="000000=00FF59",
                BundleName = "res:images.download"
            };
            //var inputOk = new UISvgImageView("", 25); //for debug
            View.Add(back);
            View.Add(back2);
            View.SendSubviewToBack(back);
            View.SendSubviewToBack(image); //image behind back
            View.Add(inputUrl);
            View.Add(inputOk);

            inputOk.AddGestureRecognizer(new UITapGestureRecognizer(tap =>
            {
                inputUrl.ResignFirstResponder();
                var dontWait = LoadSvg(inputUrl.Text);
            }));

            inputUrl.EditingDidBegin += (sender, args) =>
            {
                inputUrl.SelectAll(this);
            };

            inputUrl.SetContentHuggingPriority((float)UILayoutPriority.FittingSizeLevel, UILayoutConstraintAxis.Horizontal);
            inputOk.SetContentCompressionResistancePriority((float)UILayoutPriority.Required, UILayoutConstraintAxis.Horizontal);
            View.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
            View.AddConstraints(
                back.WithSameTop(inputOk).Minus(5),
                back.AtLeftOf(View),
                back.AtRightOf(View),
                back.WithSameBottom(title).Plus(5),

//.........这里部分代码省略.........

        public override void LoadView ()
        {
            base.LoadView ();

            isUserLogged = UserDefaults.BoolForKey (IsUserLoggedKey);
            isAppActive = UserDefaults.BoolForKey (AppActiveEntryKey);
            isAppOnBackground = UserDefaults.BoolForKey (AppBackgroundEntryKey);

            marginTop = (isUserLogged && isAppActive) ? 10f : 1f;
            height = (isUserLogged && isAppActive) ? 250f : 62f; // 4 x 60f(cells),

            var v = new UIView {
                BackgroundColor = UIColor.Clear,
                Frame = new CGRect (0,0, UIScreen.MainScreen.Bounds.Width, height),
            };

            v.Add (tableView = new UITableView {
                TranslatesAutoresizingMaskIntoConstraints = false,
                BackgroundColor = UIColor.Clear,
                TableFooterView = new UIView(),
                ScrollEnabled = false,
                RowHeight = cellHeight,
            });

            v.Add (openAppView = new UIView {
                TranslatesAutoresizingMaskIntoConstraints = false,
                Hidden = true,
            });

            UIView bg;
            openAppView.Add (bg = new UIView {
                TranslatesAutoresizingMaskIntoConstraints = false,
                BackgroundColor = UIColor.Black,
                Alpha = 0.1f,
            });

            UILabel textView;
            openAppView.Add (textView = new UILabel {
                TranslatesAutoresizingMaskIntoConstraints = false,
                Font = UIFont.FromName ("Helvetica", 13f),
                Text = isAppActive ? "NoLoggedUser".Tr() : "NoActiveApp".Tr(),
                TextColor = UIColor.White,
                BackgroundColor = UIColor.Clear,
            });

            openAppView.Add (openAppBtn = new StartStopBtn {
                TranslatesAutoresizingMaskIntoConstraints = false,
                IsActive = true,
            });

            openAppView.AddConstraints (

                bg.AtTopOf (openAppView),
                bg.AtLeftOf (openAppView),
                bg.AtRightOf (openAppView),
                bg.AtBottomOf (openAppView),

                textView.WithSameCenterY (openAppView),
                textView.AtLeftOf (openAppView, 50f),
                textView.WithSameHeight (openAppView),
                textView.AtRightOf (openAppView),

                openAppBtn.Width().EqualTo (35f),
                openAppBtn.Height().EqualTo (35f),
                openAppBtn.AtRightOf (openAppView, 15f),
                openAppBtn.WithSameCenterY (openAppView),

                null
            );

            v.AddConstraints (

                tableView.AtTopOf (v),
                tableView.WithSameWidth (v),
                tableView.Height().EqualTo (height - marginTop).SetPriority (UILayoutPriority.DefaultLow),
                tableView.AtBottomOf (v),

                openAppView.AtTopOf (v),
                openAppView.WithSameWidth (v),
                openAppView.Height().EqualTo (cellHeight),

                null
            );

            View = v;
        }