I'm new to .Net Maui and I'm stuck on a probably very stupid problem.
In a ContentPage, I defined a ScrollView and a Grid by parameterizing it with 4 columns, this is the XAML code:
<ScrollView x:Name="scrollView">
<Grid x:Name="tabella"
ColumnDefinitions="*,2*,2*,*"
Margin="10,10,10,10" />
</ScrollView>
When the page is loaded, it calls the Populate() method, here's the code:
private void PopolaTabella(List<ClassPrenotazione> prenotazioni)
{
tabella.RowDefinitions.Clear();
CreaIntestazione();
int riga = 1;
foreach (ClassPrenotazione prenotazione in prenotazioni)
{
AggiungiRiga(riga, prenotazione);
riga++;
}
scrollView.ForceLayout();
}
And here's the CreaIntestazione() code:
private void CreaIntestazione()
{
tabella.RowDefinitions.Add(new RowDefinition(60));
tabella.Add(new Border
{
StrokeThickness = 1,
Stroke = Brush.Black,
BackgroundColor = Color.FromArgb("f05924")
}, 0, 0);
tabella.Add(new Label
{
Text = "Nr.",
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
}, 0, 0);
tabella.Add(new Border
{
StrokeThickness = 1,
Stroke = Brush.Black,
BackgroundColor = Color.FromArgb("f05924")
}, 1, 0);
tabella.Add(new Label
{
Text = "Data",
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
}, 1, 0);
tabella.Add(new Border
{
StrokeThickness = 1,
Stroke = Brush.Black,
BackgroundColor = Color.FromArgb("f05924")
}, 2, 0);
tabella.Add(new Label
{
Text = "Orario",
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
}, 2, 0);
}
AggiungiRiga is the same of CreaIntestazione but with data.
When the page appears for the first time, everything works nice.
When an element is removed from "prenotazioni", the Populate() command is called again. At this point, the Grid does not change.
I have done many tests and the only result I have obtained is by changing table.RowDefinitions.Clear(); with table.Clear(); and adding Content = table as the last command.
In this way, the updated table is shown, but obviously scrolling no longer works.
Can you help me please?
The Grid control isn’t the optimal choice for your scenario.
If you want to show multiple data rows like in your table definition, you should use CollectionView together with an ObservableCollection.
Both are made to suit your needs. The two documentation links have plenty of usage samples and detailed explanations.
Hope this helps.
Related
I've only started playing with xamarin recently but I'm making a roguelike using xamarin and I had the idea of using a grid for the player map (each X Y position in the grid would be representing the randomly generated map) I've hit a snag though in that putting things any thing over the 55th column seems to push them off the screen (See image below)
Here's my code so far:
StackLayout stackLayout = new StackLayout() { VerticalOptions = LayoutOptions.FillAndExpand };
Grid grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
stackLayout.Children.Add(grid);
for (int i = 0; i < 300; i++)
{
grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
grid.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
}
// Row 0
// The BoxView and Label are in row 0 and column 0, and so only needs to be added to the
// Grid.Children collection to get default row and column settings.
grid.Children.Add(new BoxView
{
Color = Color.Green
});
grid.Children.Add(new Label
{
Text = "Row 0, Column 0",
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
});
// This BoxView and Label are in row 0 and column 1, which are specified as arguments
// to the Add method.
grid.Children.Add(new BoxView
{
Color = Color.Blue
}, 55, 0);
grid.Children.Add(new Label
{
Text = "Row 0, Column 1",
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
}, 1, 0);
// Row 1
// This BoxView and Label are in row 1 and column 0, which are specified as arguments
// to the Add method overload.
grid.Children.Add(new BoxView
{
Color = Color.Teal
}, 0, 1, 1, 2);
grid.Children.Add(new Label
{
Text = "Row 1, Column 0",
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
}, 0, 1, 1, 2); // These arguments indicate that that the child element goes in the column starting at 0 but ending before 1.
// They also indicate that the child element goes in the row starting at 1 but ending before 2.
grid.Children.Add(new BoxView
{
Color = Color.Purple
}, 1, 2, 1, 2);
grid.Children.Add(new Label
{
Text = "Row1, Column 1",
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
}, 1, 2, 1, 2);
// Row 2
// Alternatively, the BoxView and Label can be positioned in cells with the Grid.SetRow
// and Grid.SetColumn methods.
BoxView boxView = new BoxView { Color = Color.Red };
Grid.SetRow(boxView, 2);
Grid.SetColumnSpan(boxView, 2);
Label label = new Label
{
Text = "Row 2, Column 0 and 1",
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
};
Grid.SetRow(label, 2);
Grid.SetColumnSpan(label, 2);
grid.Children.Add(boxView);
grid.Children.Add(label);
Title = "Basic Grid demo";
Content = grid;
So I guess the question is a few folds, how can I "Zoom" out on the grid view to see the other cells of the grid? Additionally, am I even going about this the right way ? or is there a better approach that using a grid?
You should warp the content into a ScrollView and set Content = scrollView, then you can scroll to see all the elements:
public MainPage()
{
InitializeComponent();
StackLayout stackLayout = new StackLayout() { VerticalOptions = LayoutOptions.FillAndExpand };
Grid grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
stackLayout.Children.Add(grid);
//......
grid.Children.Add(boxView);
grid.Children.Add(label);
Title = "Basic Grid demo";
//warp the content into a ScrollView
ScrollView scrollView = new ScrollView { Content = stackLayout };
scrollView.Orientation = ScrollOrientation.Both;
Content = scrollView;
}
I am working on a simple app that keeps track of life for a card game. I am very new to xamarin so I am starting small and just slowly adding more functionality. Currently, I have two pages; One page (the page it starts on (root page?) that has only one lifetotal number, two buttons for incrementing and decrementing, and one button to switch to a two player layout, and then a second page with two lifetotals and 4 buttons (an increment and decrement for each lifetotal). I am writing all of this in C# and I would like to keep it that way, however, I am having trouble finding a way to make it so that button that switches to the two player layout will present the second page. Everything ive googled seems to point back to xml which I want to avoid. Can anyone help me understand how to do this?
I am building off an app my buddy made for to understand how xamarin works so thats what all the weird comments are
code: (the delegate i need to fill in is at the bottom, called moreplayers)
namespace SampleApp
{
//contentpage is the base class for all pages.
//You should make a base class for this page that isn't contentpage, but inherits from content page, then you can add custom methods that extend across all pages.
//Like adding a progress spinner, or disabling all UI elements.
public class MainPage : ContentPage
{
public MainPage()
{
CreateUI();
}
private void CreateUI()
{
Stats Player1 = new Stats();
Player1.LifeTotal = 20;
//abstracting out a function to build UI is good, but breaking this down further is better.
var MainGrid = new Grid()//grids are the bread and butter of xamarin forms, the documentation has lots of good examples I won't try to replicate here.
{
HorizontalOptions = LayoutOptions.FillAndExpand,//these are on all UI elements, gotta specify them or the default values will probably screw up.
VerticalOptions = LayoutOptions.FillAndExpand
};
//I usually make a bunch of nice extensions on the Grid to add rows and columns easily
MainGrid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });
MainGrid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });
MainGrid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
//grid where life total label will live
var GridForLifeTotal = new Grid()
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand
};
GridForLifeTotal.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });
GridForLifeTotal.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });
GridForLifeTotal.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
//grid where buttons will live
var GridForButtons = new Grid()
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand
};
GridForButtons.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });
GridForButtons.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });
GridForButtons.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
MainGrid.Children.Add(GridForLifeTotal, 0, 0); //add items to the grid based on position
MainGrid.Children.Add(GridForButtons, 0, 1);
//Add labels
var lifeLabel = new Label()
{
Text = Player1.LifeTotal.ToString(),
FontAttributes = FontAttributes.Bold,
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center,
FontSize = 60
};
GridForLifeTotal.Children.Add(lifeLabel, 0, 0);
//Add buttons
var UpButton = new Button()
{
Text = "+",
FontAttributes = FontAttributes.Bold,
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center,
FontSize = 30
};
UpButton.Clicked += delegate {
//delegates are bad form but it's late and I'm tired you should put this login in a view model class and have that view model be a private property on this view.
//View (this), View Model (the logic layer) then a Model to hold the life total and any other user data?
Player1.LifeTotal += 1;
lifeLabel.Text = Player1.LifeTotal.ToString();
};
var DownButton = new Button()
{
Text = "-",
FontAttributes = FontAttributes.Bold,
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center,
FontSize = 30
};
DownButton.Clicked += delegate {
//delegates are bad form but it's late and I'm tired
Player1.LifeTotal -= 1;
lifeLabel.Text = Player1.LifeTotal.ToString();
};
var MorePlayers = new Button()
{
Text = "2 Player Game",
FontAttributes = FontAttributes.Bold,
HorizontalOptions = LayoutOptions.End,
VerticalOptions = LayoutOptions.End,
FontSize = 30
};
MorePlayers.Clicked += delegate
{
//need to figure out what goes here
};
GridForButtons.Children.Add(UpButton, 0, 0);
GridForButtons.Children.Add(DownButton, 1, 0);
GridForButtons.Children.Add(MorePlayers, 0, 1);
Content = MainGrid;//very important, otherwise you don't actually see anything you've built
}
}
}
first, you need to wrap MainPage in a NavigationPage when you first assign it in your App.xaml.cs
MainPage = new NavigationPage(new MainPage());
then, to navigate to the next page in your delegate
this.Navigation.PushAsync(new Page2());
I am trying to make a gallery style grid view in Xamarin forms for iOS and Android but have an issue where layout options seem to be ignored and I get different results for iOS and Android.
Basic layout is:
frame with a border(red) containing a stack layout (pink) set to FillAndExpand for both horizontal and vertical options which contains a label at the top and an image below set to fill the rest of the stack.
The image seems to just expand outside of the stack and the frame and ignore the vertical options set.
I have tried setting these vertical options to Fill, FillAndExpand, CentreAndExpand but all have the same result.
If i remove the Stack layout and label and have the image as the only child element in the frame then it works as expected but I am required to also show a label.
The result is the same in landscape and portrait orientations.
Results on platform with iOS being the main issue here:
Code for adding an image to the grid:
var imageSource = ImageSource.FromStream(() => new MemoryStream(imageData));
var framedImage = new Frame
{
Padding = 0,
Margin = 3,
GestureRecognizers = { tapGesture },
Content = new StackLayout
{
Padding = 10,
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Pink,
Children =
{
textLabel,
new Image
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.CenterAndExpand,
Source = imageSource,
Aspect = Aspect.AspectFit
},
}
},
BackgroundColor = StyleSheet.BackgroundColorLight,
BorderColor = StyleSheet.OutlineColorDark,
CornerRadius = 5,
HasShadow = false
};
grid.Children.Add(framedImage, columnCounter, rowCounter);
Thanks in advance!
Fixed it by doing this:
var image = new Image
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Source = imageSource,
Aspect = Aspect.AspectFit
};
var framedImage = new Frame
{
Padding = 2,
Margin = 1,
GestureRecognizers = { tapGesture },
Content = image,
HasShadow = false,
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand
};
var innergrid = new Grid
{
RowDefinitions =
{
new RowDefinition {Height = new GridLength(20, GridUnitType.Auto)},
new RowDefinition {Height = new GridLength(20, GridUnitType.Star)},
}
};
innergrid.Children.Add(textLabel, 0, 0);
innergrid.Children.Add(framedImage, 0, 1);
var frame = new Frame
{
Padding = 5,
Margin = 3,
GestureRecognizers = { tapGesture },
Content = innergrid,
BackgroundColor = StyleSheet.BackgroundColorLight,
BorderColor = StyleSheet.OutlineColorDark,
CornerRadius = 5,
HasShadow = true
};
grid.Children.Add(frame, columnCounter, rowCounter);
I might have a go with the new FlexLayout to see if i can have simpler code
I have a group of cells (of type StackLayout) and they are all in a WrapLayout. I can't seem to figure out how to make it reorderable, similar to Drag & Drop ListView.
Here is the WrapLayout:
WrapLayout layout = new WrapLayout
{
Spacing = 5,
Orientation = StackOrientation.Horizontal,
Padding = new Thickness(5, Device.OnPlatform(20, 5, 5), 5, 5),
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
};
And here is one cell:
// Configure cell
var cell = new StackLayout
{
WidthRequest = Device.Idiom == TargetIdiom.Phone ? 60 : 140,
HeightRequest = Device.Idiom == TargetIdiom.Phone ? 60 : 50,
BackgroundColor = Color.FromRgb(60, 56, 72),
Children = {
new Label {
Text = Device.Idiom == TargetIdiom.Phone ? book.Contains("1") || book.Contains("2") || book.Contains("3") ? book.Substring(0,4).Replace(" ", "") : book.Substring(0,2) : book,
FontSize = 18,
TextColor = Color.White,
LineBreakMode = LineBreakMode.TailTruncation,
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalTextAlignment = TextAlignment.Center,
HorizontalTextAlignment = TextAlignment.Center
}
}
};
layout.Children.Add(cell);
And here is what the app actually looks like as of now:
Any help in making this possible is appreciated.
Well the WrapLayout that you're referring to is a custom layout that was created as one of them demos by the devs I believe. To have drag and drop functionality, you would have to implement it manually yourself.
Personally I would attach an event handler to the Tapped event of the cell:
var cell = new StackLayout
{
Tapped += Cell_Tapped;
WidthRequest = Device.Idiom == TargetIdiom.Phone ? 60 : 140,
HeightRequest = Device.Idiom == TargetIdiom.Phone ? 60 : 50,
BackgroundColor = Color.FromRgb(60, 56, 72),
Children = {
new Label {
Text = Device.Idiom == TargetIdiom.Phone ? book.Contains("1") || book.Contains("2") || book.Contains("3") ? book.Substring(0,4).Replace(" ", "") : book.Substring(0,2) : book,
FontSize = 18,
TextColor = Color.White,
LineBreakMode = LineBreakMode.TailTruncation,
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalTextAlignment = TextAlignment.Center,
HorizontalTextAlignment = TextAlignment.Center
}
}
};
layout.Children.Add(cell);
and then create an event handler:
void Cell_Tapped(object sender, EventArgs e)
{
// Stuff you want to do with that cell
// Make the current selected cell invisible, attach it to a boxview that is being moved by the tap event
}
This would however only work for a tap and not a true drag and drop implementation, and Xamarin.Forms doesn't currently give you access to touch events. You could write out Custom Renderers for the cells on iOS and Android that would allow you to access the TouchesBegan and TouchesEnded type events on both platforms.
This Xamarin link gives walkthroughs on integrating touch on both iOS and Android.
I hope this helps, I'm sure there are different implementations of this.
I have something like this so far for my view:
public StackLayout OffersSlideViewCarouselChild(Offer offer)
{
Image productImage = new Image
{
Source = ImageSource.FromUri(new Uri(offer.Image.Replace("https://", "http://"))),
HeightRequest = 270,
WidthRequest = 270,
Aspect = Aspect.AspectFit
};
var topStackLayout = new StackLayout
{
Spacing = 0
};
topStackLayout.Children.Add(productImage);
StackLayout contentStackLayout = new StackLayout
{
Spacing = 0,
Padding = new Thickness(5, 10, 5, 10),
Orientation = StackOrientation.Vertical
};
var savedBtn = SavedButtonLayout(offer.IsSelected, offer.Id);
var redeemBtn = RedeemBtnLayout(offer.Id);
var timeRemainingLabel = TimeRemainingLayout(offer, offer.Id);
contentStackLayout.Children.Add(new UILabel(16) {
Text = offer.ProductName,
TextColor = ColorHelper.FromHex(CoreTheme.COLOR_OFFERCELL_PRODUCT_TEXT),
FontFamily = CoreTheme.FONT_FAMILY_DEFAULT_BOLD,
WidthRequest = DeviceDisplaySettings.defaultwidth,
VerticalTextAlignment = TextAlignment.Center
});
contentStackLayout.Children.Add(new UILabel(14)
{
Text = offer.Headline,
TextColor = ColorHelper.FromHex(CoreTheme.COLOR_OFFERCELL_PRODUCT_TEXT),
FontFamily = CoreTheme.FONT_FAMILY_DEFAULT_BOLD,
WidthRequest = DeviceDisplaySettings.defaultwidth,
VerticalTextAlignment = TextAlignment.Center
});
contentStackLayout.Children.Add(new UILabel(14) {
Text = offer.LongRewardsMessage,
TextColor = ColorHelper.FromHex(CoreTheme.COLOR_DEAL_PAGE_LONG_REWARD_MESSAGE_RED),
FontFamily = CoreTheme.FONT_FAMILY_DEFAULT_BOLD,
WidthRequest = DeviceDisplaySettings.defaultwidth,
VerticalTextAlignment = TextAlignment.Center
});
if (!string.IsNullOrEmpty(offer.PowerMessage)) {
var htmlText = string.Format("<html><body style='color:#9b9b9b'>{0}</body></html>", offer.PowerMessage.Replace(#"\", string.Empty));
var browser = new WebView() {
//HeightRequest = (DeviceDisplaySettings.defaultheight > 600) ? 500 : 400,
HeightRequest = 800,
Source = new HtmlWebViewSource() { Html = htmlText },
};
browser.Navigating += OnNavigating;
contentStackLayout.Children.Add(browser);
}
var nestedStackLayout = new StackLayout()
{
VerticalOptions = LayoutOptions.FillAndExpand
};
nestedStackLayout.Children.Add(topStackLayout);
nestedStackLayout.Children.Add(timeRemainingLabel);
nestedStackLayout.Children.Add(contentStackLayout);
var mainScrollView = new ScrollView()
{
Padding = new Thickness(0, 0, 0, 10),
VerticalOptions = LayoutOptions.FillAndExpand,
Orientation = ScrollOrientation.Vertical,
Content = nestedStackLayout
};
var mainStackLayout = new StackLayout()
{
Spacing = 5,
Padding = new Thickness(0, 0, 0, 0),
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.Fill,
Orientation = StackOrientation.Vertical,
Children = { savedBtn, mainScrollView, redeemBtn }
};
return mainStackLayout;
}
private StackLayout SavedButtonLayout(bool isSelected, int offerid)
{
int buttonsToShow = 2;
bool displaySaveButton = true;
if (IsPremisesOffer (offerid)) {
buttonsToShow = 3;
displaySaveButton = false;
}
btnShare = new UIFieldDefinition(_pageFieldDefinition.ShareButtonDefinition);
btnShare.Text = "SHARE";
btnShare.ClassId = offerid.ToString();
btnShare.WidthRequest = (DeviceDisplaySettings.defaultwidth / buttonsToShow) - 40;
btnShare.BackgroundColor = Color.FromRgb(167, 188, 33);
btnShare.VerticalContentAlignment = TextAlignment.Center;
btnShare.HandleClick(btnShare_Clicked);
btnSave = new UIFieldDefinition(_pageFieldDefinition.SaveButtonDefinition);
btnSave.Text = isSelected ? "UNSAVE" : "SAVE";
btnSave.ClassId = offerid.ToString();
btnSave.WidthRequest = (DeviceDisplaySettings.defaultwidth / buttonsToShow) - 40;
btnSave.BackgroundColor = Color.FromRgb(167, 188, 33);
btnSave.VerticalContentAlignment = TextAlignment.Center;
btnSave.HandleClick(btnSave_Clicked);
rl = new StackLayout {
Spacing = 10,
Orientation = StackOrientation.Horizontal,
BackgroundColor = Color.FromRgb(196, 221, 57),
Padding = new Thickness(40, 5, 5, 5),
WidthRequest = DeviceDisplaySettings.defaultwidth
};
rl.Children.Add(btnShare);
if (displaySaveButton) rl.Children.Add(btnSave);
return rl;
}
public UIFieldDefinition RedeemBtnLayout(int offerid)
{
int buttonsToShow = 1;
btnRedeem = new UIFieldDefinition(_pageFieldDefinition.RedeemButtonDefinition);
btnRedeem.Text = "REDEEM NOW";
btnRedeem.ClassId = offerid.ToString();
btnRedeem.WidthRequest = (DeviceDisplaySettings.defaultwidth / buttonsToShow) - 10;
// btnRedeem.HorizontalOptions = LayoutOptions.FillAndExpand;
// btnRedeem.VerticalOptions = LayoutOptions.EndAndExpand;
btnRedeem.HandleClick(btnRedeem_Clicked);
return btnRedeem;
}
However, I am noticing that the Redeem button does not even display on the view (It's supposed to be fixed on the bottom).
The scrollview works but the buttom is missing. Why?
Please let me know if you need further code details.
Moving here from comments above. There are two separate issues from what I can tell, and as far as I can tell, are unrelated:
The WebView, nested inside the ScrollView, is not big enough to fully display the content.
The button that is supposed to be at the bottom of the screen is not displaying.
For both of them, the answer is probably in how you are setting HeightRequest. There have been a lot of suggestions by myself and other commenters to change or get rid of some of the HeightRequest settings, and I'm not sure of the current state of your source code. So assuming those are still there:
For solving the WebView issue, read How can I add HTML to a Stacklayout inside a Scrollview in Xamarin forms?. This will let you figure out the right HeightRequest to use. The short answer is that depending on exactly what you want to happen, you may need a custom renderer. Note that the HeightRequest for the WebView will not affect any layout outside of the ScrollView.
For solving the issue of the button not appearing, get rid of the HeightRequest setting on the ScrollView, and the VerticalOptions on the StackLayout created in SavedButtonLayout.
I am assuming you did the experiment suggested above to make sure that the redeemBtn will render if placed before the ScrollView, and it does show up then. If not, you first need to fix that.
If you have "fixed" this by changing the HeightRequest then your real problem is the fixed pixel size of all your views and layouts, I recommend you DON'T use fixed pixel sizes for different screen resolution this will be a bigger problem later, What you can do is get the Screen size and do the math to fit all your elements of the view, one way to get the width and height of the screen is on the OnSizeChanged event of Pages (Like ContentPage), something like this:
SizeChanged += SizeChanged;
void SizeChanged (object sender, EventArgs e)
{
Layout.WidthRequest = Width * 0.3;
Layout.HeightRequest = Height * 0.35;
}
Your layout is pretty busy. A few things:
Set VerticalOptions to EndAndExpand for redeemBtn.
Set VerticalOptions to StartAndExpand for savedBtn.
Set VerticalOptions to Fill for mainScrollView.
Set VerticalOptions to FillAndExpand for mainRelLayout.
Set VerticalOptions and HorizontalOptions to Fill for
mainStackLayout.
I think that will get you to where you want to be.
The options that include "Expand" will grow the element to accommodate the desired height of its contents.