Can set percentage widths for elements?
The problem ive got is the 2nd label pushes the button off screen, how can you force a label to only take up the space available. I've tried setting minimum width of the elements.
new StackLayout
{
Orientation = StackOrientation.Horizontal,
Spacing = 0,
Children = {
new Label() { Text = "TITLE", HorizontalOptions = LayoutOptions.Start},
new Label() { Text = "fsdf dsfsd fsdfsdfs ewtrey vjdgyu jhy jgh tyjht rhyrt rgtu gtr ujtrey gt yu tgrt uh tyui y5r rtuyfgtj yrjhrytjtyjy jty t ruy ujh i rt", HorizontalOptions = LayoutOptions.Center, LineBreakMode = LineBreakMode.WordWrap},
new Button() { Text = "wee", HorizontalOptions = LayoutOptions.EndAndExpand}
}
},
Try Using OnSizeAllocated(double width, double height),
Code In your Xamarin.Forms Page
protected override void OnSizeAllocated(double width, double height)
{
base.OnSizeAllocated(width, height);
Metrics.Instance.Width=width;
Metrics.Instance.Height=height;
}
Singleton Class to Save the width and Height and Check orientation change
public class Metrics
{
private static Metrics _instance;
protected SessionData ()
{
}
public double Width{ get; set; } //Width
public double Height{ get; set; } //Height
}
Creating Stacklayout
var StackchildSize = Metrics.Width/3;
new StackLayout
{
Orientation = StackOrientation.Horizontal,
Spacing = 0,
Children = {
new Label() { Text = "TITLE", HorizontalOptions = LayoutOptions.Start
WidthRequest=stackChildSize},
new Label() { Text = "<Your Text>", WidthRequest=stackChildSize,},
new Button() { Text = "wee", HorizontalOptions = LayoutOptions.EndAndExpand,
WidthRequest=stackChildSize,}
}
},
Related
I'm trying to detect a collision between two Xamarin. Forms Controls (BoxViews), but I can't find a way to do it. I have a button that what it does is to decrease the TranslationY of a BoxView until it collides with the other BoxView. I remember that with WinForms this could be done with IntersectsWith, but apparently here does not work, I currently have this:
public class Main : ContentPage
{
public BoxView pjOne = new BoxView { BackgroundColor = Color.Red, HeightRequest = 100, WidthRequest = 100, HorizontalOptions = LayoutOptions.Center, VerticalOptions = LayoutOptions.StartAndExpand };
public BoxView pjTwo = new BoxView { BackgroundColor = Color.Green, HeightRequest = 100, WidthRequest = 100, HorizontalOptions = LayoutOptions.Center, VerticalOptions = LayoutOptions.CenterAndExpand };
public Button btnDown = new Button { HorizontalOptions = LayoutOptions.FillAndExpand, VerticalOptions = LayoutOptions.End, Text = "Down", TextColor = Color.White };
public Main()
{
btnDown.Clicked += (s, e) =>
{
if(!pjOne.Bounds.IntersectsWith(pjTwo.Bounds))
{
pjOne.TranslationY -= 100; //If it does not detect collision it decreases the TranslationY
}
else
{
pjOne.TranslationY += 100; //If it detects collision it increases the TranslationY
}
};
Content = new StackLayout
{
Children =
{
pjOne,
pjTwo,
btnDown
}
};
}
}
But this doesn't work, it never detects the collision between the two BoxView.
Bounds do not get updated when a Translation is applied.
From the docs:
Bounds is assigned during the Layout cycle by a call to Layout(Rectangle).
I would try
calling Layout with the new location you want to translate the BoxView to
create a rectangle for pjOne and pjTwo. Then you could use the Xamarin.Forms.Rectangle.IntercectsWith method.
Here is an untested example of how to do this:
var pjRectOne = new Rectangle(pjOne.X + pjOne.TranslationX, pjOne.Y + pjOne.TranslationY, pjOne.Width, pjOne.Height);
var pjRectTwo = new Rectangle(pjTwo.X + pjTwo.TranslationX, pjTwo.Y + pjTwo.TranslationY, pjTwo.Width, pjTwo.Height);
if (pjRectOne.IntercectsWith(pjRectTwo))
{
}
Note: if pjOne or pjTwo are children of a view, their X and Y positions will be relative to the parent. To get the absolute X and Y, loop through all their parents by doing something like this
var y = pjOne.Y;
var parent = pjOne.ParentView;
while (parent != null)
{
y += parent.Y;
parent = parent.ParentView;
}
Hope this helped you out :)
I want to create a listview in Xamarin portable,
the item source of the listview is List<String> and my datatemplate of the listview is prepared by this function,
private DataTemplate createItemtemplate()
{
try
{
Label lbl_binding = new Label()
{
TextColor = Color.Red,
FontSize = 16,
VerticalTextAlignment = TextAlignment.Center,
HorizontalOptions = LayoutOptions.CenterAndExpand,
};
lbl_binding.SetBinding(Label.TextProperty, ".");
StackLayout stkBottom = new StackLayout()
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.CenterAndExpand,
VerticalOptions = LayoutOptions.Center,
Padding = new Thickness(0),
};
stkBottom.Children.Add(lbl_binding);
ViewCell vc = new ViewCell() {
View = stkBottom
};
DataTemplate Dp = new DataTemplate(() =>
{
return vc;
});
return Dp;
}
catch (Exception ex)
{
return null;
}
}
Now, my list view is populated, but all the labels are filled with last item, I mean the no of items are rightly populated, but all the items are filled with the last item only.
what i am doing wrong here?
lstAdmin = new ListView()
{
ItemTemplate = createItemtemplate(),
};
lstadmin.Itemsource = source;
Change your listview from List to ObservableCollection. This should do the work.
Below code useful for you as reference
Take Class members:
public class Dummy
{
public string Id { get; set; }
public string Img { get; set; }
public string Title { get; set; }
public string SubTitle { get; set; }
public string Count { get; set; }
public string Status { get; set; }
}
Create One ObservableCollectionList:
ObservableCollection<Dummy> productItems = new
ObservableCollection<Dummy>();
Add Items to the ObservableCollectionList:
productItems.Add(new Dummy() { Name = "0", Img = "Avatar.png",
Title = "Total Books", SubTitle = "Desc", Count = "50", Status =
"Total" });
productItems.Add(new Dummy() { Id = "1", Img = "Avatar.png", Title
= "Out of Stock Books", SubTitle = "Desc", Count = "40", Status =
"OutStock" });
Declare ListView:
ListView listview = new ListView()
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
SeparatorVisibility = SeparatorVisibility.None,
RowHeight = 30,
};
listview.ItemTemplate = new DataTemplate(typeof(cell));
listview.ItemSelected += listviewItemSelected;
Take ViewCell and design your UI in ViewCell and assign binding
public class cell : ViewCell
{
public cell()
{
Image img = new Image()
{
VerticalOptions = LayoutOptions.StartAndExpand,
};
img.SetBinding(Image.SourceProperty, new Binding("Img"));
Label lbltitle = new Label()
{
VerticalOptions = LayoutOptions.Start,
TextColor = Color.Black
};
lbltitle.SetBinding(Label.TextProperty, new
Binding("Title"));
Label lbldesc = new Label()
{
VerticalOptions = LayoutOptions.Start,
TextColor = Color.Black
};
lbldesc.SetBinding(Label.TextProperty, new
Binding("SubTitle"));
StackLayout lblstack = new StackLayout()
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Children = { lbltitle, lbldesc },
};
BoxView boxEdit = new BoxView()
{
VerticalOptions = LayoutOptions.Start,
HorizontalOptions = LayoutOptions.End,
Color = Color.Black,
HeightRequest = 20,
WidthRequest = 10
};
tapGestureEdit.Tapped += tapGestureEditTapped;
Label lblCount = new Label()
{
VerticalOptions = LayoutOptions.CenterAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
TextColor = Color.Black
};
lblCount.SetBinding(Label.TextProperty, new
Binding("Count"));
StackLayout stackCount = new StackLayout()
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.EndAndExpand,
Children = { boxEdit, lblCount },
};
StackLayout stackMain = new StackLayout()
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Children = { img, lblstack, stackCount },
Orientation = StackOrientation.Horizontal,
Margin = new Thickness(10, 10, 10, 10)
};
View = stackMain;
}
}
public class AdminCell : ViewCell
{
public AdminCell()
{
Label lbl_binding = new Label()
{
TextColor = Color.FromRgb(30, 144, 255),
FontSize = 16,
VerticalTextAlignment = TextAlignment.Center,
HorizontalOptions = LayoutOptions.CenterAndExpand,
};
lbl_binding.SetBinding(Label.TextProperty, ".");
StackLayout stkBottom = new StackLayout()
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.CenterAndExpand,
VerticalOptions = LayoutOptions.Center,
Padding = new Thickness(0),
};
stkBottom.Children.Add(lbl_binding);
View = stkBottom;
}
}
this code is working for me removed the template and use this cell, i still don't understand why the data template is not working
I had the same issue and after some tests I've figured out how to not get always the last item.
You should put the Label creation ,and all the other elements you want put as ItemTemplate, inside the lambda of the DataTemplate like this (example code) :
DataTemplate itemTemplate = new DataTemplate(() =>
{
Label label = new Label()
{
Margin = new Thickness(45, 0, 0, 0),
HorizontalOptions = LayoutOptions.Start,
FontSize = (double)Xamarin.Forms.Application.Current.Resources["BodyFontSize"],
HeightRequest = 20
};
label.SetBinding(Label.TextProperty, "Name");
ViewCell templateCell = new ViewCell()
{
View = label
};
return templateCell;
});
Hope that helps (helped in my case).
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.
I have a Xamarin.Forms (1.4.2.6359) Project using Visual Studio 2013 and have created the carousel page below. I want to add page indicators, i.e. dots over top of the carousel page. Is this able to be done with the Xamarin Forms CarouselPage?
public class SplashPage : CarouselPage
{
public SplashPage ()
{
this.Children.Add(new CarouselChild("Logo.png", "Welcome"));
this.Children.Add(new CarouselChild("Settings.png", "Settings"));
}
}
class CarouselChild : ContentPage
{
public CarouselChild(string image, string text)
{
StackLayout layout = new StackLayout
{
HorizontalOptions = LayoutOptions.CenterAndExpand,
VerticalOptions = LayoutOptions.CenterAndExpand,
};
layout.Children.Add(new Image
{
Source = image,
});
layout.Children.Add(new Label
{
HorizontalOptions = LayoutOptions.CenterAndExpand,
VerticalOptions = LayoutOptions.EndAndExpand,
Text = text,
Scale = 2,
});
this.Content = layout;
}
}
Trying to keep things simple, what I did was:
MyCarouselPage:
class MyCarouselPage : CarouselPage
{
private int totalPages;
private int currentPage;
public MyCarouselPage()
{
var pages = GetPages();
totalPages = pages.Length;
this.ChildAdded += MyCarouselPage_ChildAdded;
for (int i = 0; i < totalPages; i++)
{
currentPage = i;
this.Children.Add(pages[i]);
}
}
void MyCarouselPage_ChildAdded(object sender, ElementEventArgs e)
{
var contentPage = e.Element as MyPageBase;
if (contentPage != null)
{
contentPage.FinalStack.Children.Add(new CarouselPageIndicator(currentPage, totalPages, "indicator.png", "indicator_emtpy.png"));
}
}
private MyPageBase[] GetPages()
{
var pages = new MyPageBase[] { new Page1(), new Page2() };
return pages;
}
}
The Base class for the Pages
class MyPageBase:ContentPage
{
public StackLayout FinalStack { get; set; }
}
CarouselPageIndicator
public class CarouselPageIndicator : StackLayout
{
public CarouselPageIndicator(int currentIndex, int totalItems, string sourceIndicator, string souceEmptyIndicator)
{
this.Orientation = StackOrientation.Horizontal;
this.HorizontalOptions = LayoutOptions.CenterAndExpand;
for (int i = 0; i < totalItems; i++)
{
var image = new Image();
if (i == currentIndex)
image.Source = sourceIndicator;
else
image.Source = souceEmptyIndicator;
this.Children.Add(image);
}
this.Padding = new Thickness(10);
}
}
And for the n-Pages
class Page1:MyPageBase
{
public Page1()
{
var layout = new StackLayout
{
Children = {
new Label{Text="Page 1"}
}
};
this.FinalStack = layout;
this.Content = FinalStack;
}
}
I was able to make a work around for the problem by hard coding the page indicators by changing CarouselChild method below:
public CarouselChild(string image, string text, int pageNumber, int pageCount)
{
var width = this.Width;
StackLayout layout = new StackLayout
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Padding = new Thickness( 40, 40, 40, 40),
BackgroundColor = Color.Black,
};
layout.Children.Add(new Image
{
Source = image,
VerticalOptions = LayoutOptions.Start,
HorizontalOptions = LayoutOptions.Center,
});
layout.Children.Add(new Label
{
HorizontalOptions = LayoutOptions.CenterAndExpand,
Text = text,
FontSize = 36,
LineBreakMode = LineBreakMode.WordWrap,
});
layout.Children.Add(CarouselPageIndicator(pageNumber, pageCount));
this.Content = layout;
}
internal StackLayout CarouselPageIndicator(int pageNumber, int pageCount)
{
StackLayout layout = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.CenterAndExpand,
VerticalOptions = LayoutOptions.EndAndExpand,
};
if (pageCount >= pageNumber)
{
for (int i = 1; i < pageCount + 1; i++)
{
if (i == pageNumber)
{
layout.Children.Add(new Image
{
Source = "Light.png",
});
}
else
{
layout.Children.Add(new Image
{
Source = "Dark.png",
});
}
}
}
return layout;
}
Here is my issue:
The red block is meant to be the avatar for the person sometime, and the blue balloon a chat message. The chat message object is a RelativeLayout with a Label and an Image positioned one of top of each other, but not matter what I do, I can't get it to be centered. I only have one View:
using System;
using System.Collections.Generic;
using Xamarin.Forms;
namespace TestChat
{
public partial class ChatPage : ContentPage
{
public ChatPage ()
{
this.Title = "Chat page";
InitializeComponent ();
}
void OnChatClick (object sender, EventArgs args) {
Image pic = new Image {
Source = "bubble.png",
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Aspect = Aspect.Fill
};
Label textLabel = new Label {
Text = "Hello",
TextColor = Color.White,
VerticalOptions = LayoutOptions.CenterAndExpand,
HorizontalOptions = LayoutOptions.EndAndExpand
};
Frame picFrame = new Frame {
HasShadow = false,
BackgroundColor = Color.Red,
Padding = new Thickness (0),
Content = pic
};
Frame textFrame = new Frame {
HasShadow = false,
BackgroundColor = Color.Transparent,
Padding = new Thickness (0,0,15,0),
Content = textLabel
};
RelativeLayout overlayLayout = new RelativeLayout { BackgroundColor = Color.Blue, HorizontalOptions = LayoutOptions.FillAndExpand, VerticalOptions = LayoutOptions.FillAndExpand };
overlayLayout.Children.Add (picFrame,
xConstraint: Constraint.RelativeToParent((parent) => parent.X),
yConstraint: Constraint.RelativeToParent((parent) => parent.Y),
widthConstraint: Constraint.RelativeToParent((parent) => parent.Width-2),
heightConstraint: Constraint.RelativeToParent((parent) => parent.Height-2)
);
overlayLayout.Children.Add (textFrame,
xConstraint: Constraint.RelativeToParent((parent) => parent.X),
yConstraint: Constraint.RelativeToParent((parent) => parent.Y),
widthConstraint: Constraint.RelativeToParent((parent) => parent.Width-2),
heightConstraint: Constraint.RelativeToParent((parent) => parent.Height-2)
);
Frame overlayContainerFrame = new Frame {
HasShadow = false,
BackgroundColor = Color.Red,
Padding = new Thickness(1),
HeightRequest = 100,
HorizontalOptions = LayoutOptions.CenterAndExpand,
Content = overlayLayout
};
StackLayout horizontalLayout = new StackLayout {
Orientation = StackOrientation.Horizontal
};
BoxView avatarImage = new BoxView {
Color = Color.Red,
HeightRequest = 50,
WidthRequest = 50
};
horizontalLayout.Children.Add (avatarImage);
horizontalLayout.Children.Add (overlayContainerFrame);
ChatScrollViewStackLayout.Children.Add (horizontalLayout);
//ChatStackLayout.Children.Add (pic);
}
void CreateChatBubble() {
}
}
}
Does anyone have any ideas why I can't get the relative layout to resize accordingly so it doesn't go out of range of the screen? I tried setting its WidthConstraint to parent.With-52 to make up for the avatar taking up 50 units horizontally, but instead I get this:
I've been stuck at this for at least 8 hours now, and I'm pretty much out of ideas. Any tips would be greatly appreciated. Here is the project's git repo so you can clone it if you would like to test anything:
https://github.com/sgarcia-dev/xamarin-chat.git
Any help would be greatly appreciated, and feel free to completely ignore my code if it looks messy if you can replicate what I want. (One image on the left, and a message bubble on the right with an underlying image background)
Check out this implementation
void OnChatClick (object sender, EventArgs args) {
var pic = new Image {
Source = "bubble.png",
Aspect = Aspect.Fill
};
var textLabel = new Label {
Text = "Hello",
TextColor = Color.White,
VerticalOptions = LayoutOptions.Center,
LineBreakMode = LineBreakMode.WordWrap
};
var relativeLayout = new RelativeLayout {
BackgroundColor = Color.Navy,
// HeightRequest = 1000
};
var absoluteLayout = new AbsoluteLayout {
VerticalOptions = LayoutOptions.Center,
BackgroundColor = Color.Blue
};
var frame = new Frame {
BackgroundColor = Color.Red
};
absoluteLayout.Children.Add (pic,
new Rectangle (0, 0, 1, 1),
AbsoluteLayoutFlags.All);
absoluteLayout.Children.Add (textLabel,
new Rectangle (0.5, 0.5, AbsoluteLayout.AutoSize, AbsoluteLayout.AutoSize),
AbsoluteLayoutFlags.PositionProportional);
// textLabel.SizeChanged += (object label, EventArgs e) => {
// relativeLayout.HeightRequest = textLabel.Height + 30;
// absoluteLayout.HeightRequest = textLabel.Height + 30;
// };
relativeLayout.Children.Add (frame,
heightConstraint: Constraint.RelativeToParent (parent => parent.Height),
widthConstraint: Constraint.RelativeToParent (parent => parent.Width * 0.3));
relativeLayout.Children.Add (absoluteLayout,
xConstraint: Constraint.RelativeToParent (parent => parent.Width * 0.3),
widthConstraint: Constraint.RelativeToParent (parent => parent.Width * 0.7));
ChatScrollViewStackLayout.Children.Add (relativeLayout);
}
If you need to auto-adjust height of the chat message for long text uncomment all five commented lines.