Automatically scroll the ListView to the selected position when SelectedItem property is changed.
Works on iOS, but not implemented on Android or UWP.
Update ListView renderers for Android and UWP.
We have already built this functionality using custom renderers. If approved, can create a PR.
Unify the UI behaviour across all three platforms.
<ListView
x:Name="pasengerlist"
SelectionMode="None"
VerticalOptions="FillAndExpand"
BackgroundColor="White"
HasUnevenRows="true">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell
x:Name=" "
>
<StackLayout
Margin="5"
Orientation="Vertical"
VerticalOptions="FillAndExpand"
HorizontalOptions="FillAndExpand">
<Label
Text="{Binding PaxNo}"
TextColor="Red"
FontSize="Micro" />
<StackLayout
Margin="10"
Orientation="Horizontal"
VerticalOptions="CenterAndExpand">
<StackLayout
Orientation="Vertical"
HorizontalOptions="StartAndExpand">
<Label
Text="FIRST NAME"
TextColor="Gray"
FontSize="Micro" />
<Frame
BackgroundColor="White"
BorderColor="Gray"
CornerRadius="0"
Padding="0"
HasShadow="false">
<Label
x:Name="fromname"
Text="{Binding FirstName}"
BackgroundColor="Transparent"
Margin="5"
FontSize="Micro"
TextColor="Black" />
</Frame>
</StackLayout>
<StackLayout
Orientation="Vertical"
HorizontalOptions="CenterAndExpand">
<Label
Text="LAST NAME"
TextColor="Gray"
FontSize="Micro" />
<Frame
BackgroundColor="White"
BorderColor="Gray"
HasShadow="false"
Padding="0"
CornerRadius="0">
<Label
x:Name="lastname"
Text="{Binding LastName}"
BackgroundColor="Transparent"
Margin="5"
FontSize="Micro"
TextColor="Black" />
</Frame>
</StackLayout>
<StackLayout
Orientation="Vertical"
HorizontalOptions="EndAndExpand">
<Label
Text="GENDER"
TextColor="Gray"
FontSize="Micro" />
<Frame
BackgroundColor="White"
HasShadow="false"
BorderColor="Gray"
Padding="0"
CornerRadius="0">
<Label
Text="{Binding Gender}"
Margin="5"
TextColor="Black"
FontSize="Micro" />
</Frame>
</StackLayout>
</StackLayout>
<BoxView
Color="Silver"
HeightRequest="1"
HorizontalOptions="FillAndExpand" />
<!--// end -->
<StackLayout
Margin="10"
Orientation="Horizontal"
VerticalOptions="Center">
<StackLayout
Orientation="Vertical"
HorizontalOptions="StartAndExpand">
<Label
Text="MEAL AMOUNT : "
TextColor="Gray"
FontSize="Micro" />
<Frame
BackgroundColor="White"
IsVisible="{Binding additonalservicevisibility1}"
BorderColor="Gray"
HasShadow="false"
Padding="0"
CornerRadius="0">
<Picker
x:Name="meals"
BackgroundColor="Transparent"
Title="Select Here"
SelectedIndexChanged="Handle_PickerChanged"
ItemsSource="{Binding AdditionalServiceSelect.MealValueLst}"
ItemDisplayBinding="{Binding MealServiceName}"
FontSize="Micro"
TextColor="Black">
</Picker>
</Frame>
<Label
IsVisible="{Binding additonalservicevisibility2}"
Text="Meals not Available!"
FontSize="Micro"
TextColor="Black" />
</StackLayout>
</StackLayout>
<StackLayout
IsVisible="false"
Orientation="Horizontal"
HorizontalOptions="StartAndExpand">
<Label
x:Name="totalamountMB"
Text="TOTAL AMOUNT : "
TextColor="Black"
FontSize="Small"
FontAttributes="Bold"
Margin="10,0,0,0" />
<Label
Text="{Binding TotalAmount}"
TextColor="Black"
FontSize="Small"
FontAttributes="Bold"
Margin="10,0,0,0" />
</StackLayout>
<BoxView
Color="Silver"
HeightRequest="1"
HorizontalOptions="FillAndExpand" />
<StackLayout
Margin="10"
Orientation="Horizontal"
VerticalOptions="Center">
<StackLayout
Orientation="Vertical"
HorizontalOptions="StartAndExpand">
<Label
Text="AIRLINE NAME"
TextColor="Gray"
FontSize="Micro" />
<Frame
BackgroundColor="White"
HasShadow="false"
BorderColor="Gray"
CornerRadius="0"
Padding="0">
<Label
Text="{Binding Airname}"
BackgroundColor="Transparent"
Margin="5"
FontSize="Micro"
TextColor="Black" />
</Frame>
</StackLayout>
<StackLayout
IsVisible="true"
Orientation="Vertical"
HorizontalOptions="EndAndExpand">
<Label
Text="FREQUENT FLYER NO."
TextColor="Gray"
FontSize="Micro" />
<Frame
BackgroundColor="White"
BorderColor="Gray"
HasShadow="false"
Padding="0"
CornerRadius="0">
<Label
BackgroundColor="Transparent"
FontSize="Micro"
Margin="5"
TextColor="Black" />
</Frame>
</StackLayout>
<StackLayout
VerticalOptions="Center"
HorizontalOptions="EndAndExpand">
<Label
Text="Get Employee"
IsVisible="{Binding GetPasssengerVisibility}"
VerticalOptions="Center"
TextColor="Green"
FontAttributes="Bold"
FontSize="Small"
HorizontalOptions="EndAndExpand" />
<Label.GestureRecognizers>
<TapGestureRecognizer
Tapped="Ondetaillabeltapped"
NumberOfTapsRequired="1" />
</Label.GestureRecognizers>
</StackLayout>
</StackLayout>
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
<Label
Margin="0,0,10,0"
x:Name="baggageAmount"
HorizontalOptions="EndAndExpand"
Text=" Baggage Amount : 0 "
TextColor="Black"
FontSize="Micro" />
<Label
Margin="0,0,10,0"
x:Name="wholetotalamount"
HorizontalOptions="EndAndExpand"
Text="Total Amount : 0"
TextColor="Black"
FontSize="Micro" />
</StackLayout>
</ScrollView>
Is there a way to put and expander inside a ContentPage? I have a MasterDetailPage app and i would like to have sort of an expander; like the one used by gmail app where you specify multiple gmail accounts; then you can hit the expander and switch between accounts.
i have attached an example image
Thanks
Nick
Hi Guys,
I am looking for some plug-in or snap on code (no custom renderers please)
For a functionality like shown below.
I tried implementing this with https://github.com/rotorgames/Rg.Plugins.Popup, with a ListView, however the binding does not work with the control template.
Can you guys please suggest any better option? (or even how to get this working - small POC, please).
Thanks,
N Baua
Xamarin Forms Users,
Please help, with a questions about getting information about an app at run time, using Xamarin Forms, with C#, via Visual Studio Community 2019.
How can one...
Get Version Number and Version Name from the Android Manifest in Xamarin "MyForm.xaml.cs" file?
Please advise.
Thanks.
-- Mark Kamoski
using System;
using Xamarin;
using Xamarin.Forms;
namespace Consecration2019
{
public partial class MainPage : ContentPage
{
public MainPage()
{
this.InitializeComponent();
}
private void PickStartDay_Clicked(object sender, EventArgs e)
{
Application.Current.MainPage = new StartPickerPage();
}
private void GetAppDetails_Clicked(object sender, EventArgs e)
{
string myVersionName = string.Empty;
//I have tried this but "Context" does not exist.
//
//var myVersionName = Context.PackageManager.GetPackageInfo(Context.PackageName, 0).VersionName;
//I have tried this but "Application" does not contain a definition for "Context" here.
//
//string myVersionName = Application.Context.ApplicationContext.PackageManager.GetPackageInfo(Application.Context.ApplicationContext.PackageName, 0).VersionName;
this.DisplayAlert(title: "App Details", message: "Note myVersionName='" + myVersionName + "' here.", cancel: "Ok");
}
}
}
Cancel webview navigation is not working, and sometimes it works but makes the webview unresponsive. Any suggestions, I need to get some data from javascript to c#. TIA @JamesMontemagno @candidodmv @MarkWheeldon
I have labels inside a grid and I want them to take up only the necessary space to fit the text. With short messages this works correctly, but with longer messages that text wrap the label fills the available space even though the way the words wrapped means that it doesn't need it.
My account isn't allowed to post direct links yet but here is a screenshot:
photos.google.com/share/AF1QipNDOK7HtPb3rLREC2dhufaKCA9CnSpIqk-rRJTSSKQa-XO9c8UzNbHxVEMpfKlMOQ/photo/AF1QipMVZVv3ciXt9xafg_cfkVU68Te9_iwamMrWB7A6?key=ZDdjTnRpQkZaeWRfcU0yOXljZGNsTEdDS3p3XzdB
As you can see, the pink label takes up only the necessary amount of space, while the aquamarine one expanded to fill the available space despite having a large area on the right that doesn't have any text in it.
I've tried searching for solutions with no luck. The only thread I found that even mentions this problem has two developers bickering about whether or not the one trying to help actually understands what the problem is, and a solution is never posted. Does anyone know how to fix this?
XAML:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="90"/>
</Grid.ColumnDefinitions>
<Label BackgroundColor="Aquamarine"
HorizontalTextAlignment="Left"
HorizontalOptions="Start"
Grid.Row="0" Grid.Column="0">
Hippopotamus vocabulary accentuates educational imbalances. Gymnastic crocodilians abbreviate gratuitously enourmous nomenclature.
</Label>
<Label BackgroundColor="Pink"
HorizontalTextAlignment="Left"
HorizontalOptions="Start"
Grid.Row="1" Grid.Column="0"
Margin="0,0,90,0">
Short.
</Label>
<StackLayout Grid.Row="0" Grid.Column="1" BackgroundColor="Yellow" HorizontalOptions="FillAndExpand"></StackLayout>
<StackLayout Grid.Row="1" Grid.Column="1" BackgroundColor="Green" HorizontalOptions="FillAndExpand"></StackLayout>
</Grid>
This is a wired issue that we are facing. The App is developed with Xamarin Forms (With latest stable version available as of now).
The issue is for android 4.4, 5 as well as 9. Things are working fine on 6,7 and 8.
The problem is when a user types on an entry field, the text is not visible
In android 9 it only happens for one entry field.
For example the user registration screen, which has 4 entry fields and a picker, things go wrong as follows
4.4 and 5 - No text shown at all for all four entry fields.
in android 9 - The 4th entry text not shown (all 4 entries are pretty much the same.) moving the 1st, 2nd or the 3rd to be the last entry has the same effect. meaning the newly moved one to the bottom will not show the typed text, the previously entry with the issue (which has now become the 3rd in the list, shows the text correctly)
Once observation is the cursor is not visible in the entry field. We are using a custom renderer, however using the "entry" instead of the custom one still has the same effect.
Thanks
Hi All,
OnBackButtonPressed() is not hitting when pressing back button while keyboard is open.
Need to unfocus the entry when keyboard hides usin back button.
Any help is appreciated.
Thanks
I've got stuck with this, and am very new to Xamatin Forms.
(I also posted this Friday but can find no trace of it???)
I'm wanting to use the AutoSuggestBox from dotMorten in my Xamarin Forms app.
I have the list of values in a SQLite table:
public class Streets
{
[PrimaryKey]
[MaxLength(255)]
public String StreetName { get; set; }
}
I'm wanting to use this table as the ItemsSource for the AutoSuggestBox but, using the ToDo example have this code to get the data from the table:
public Task<List<Streets>> LookupStreetsAsync(String query)
{
return lookups.Table<Streets>().Where(s => s.StreetName.StartsWith(query)).OrderBy(s => s.StreetName).ToListAsync();
}
However I cannot use this as the ItemsSource
private void StreetAutoSuggestBox_TextChanged(AutoSuggestBox sender, AutoSuggestBoxTextChangedEventArgs e)
{
if (e.Reason == AutoSuggestionBoxTextChangeReason.UserInput)
{
String query = sender.Text.Trim();
// only auto suggest if 3 or more characters
if (query.Length > 2)
{
sender.ItemsSource = App.Lookups.LookupStreetsAsync(query);
}
}
}
I get an error at sender.ItemsSource:
Cannot implicitly convert type 'System.Threading.Tasks.Task<System.Collections.Generic.List<XamarinFirst.Streets>>' to 'System.Collections.IList'. An explicit conversion exists (are you missing a cast?)
I have tried casting it to an IList but nothing I find Googling works, just different errors.
How can I use my SQLite table as the ItemsSource?
Thanks,
Mike
Good day!
I'm sorry for disturbing you.
Im new in Xamarin Forms and im trying to build a app which has hamburger menu like this...
Sorry but can not add screenshots ((
I found this in the Internet, but this is not the case and I could not add it
How can I add this correctly, please can u something advise or help with this?
Thank you in advance!
Hi,
I am having some issues with the CollectionView I am running Xamarin.Forms 4.00 pre-8 with the below XAML
<CollectionView ItemsSource="{Binding Media, Mode=OneWay}" ItemSizingStrategy="MeasureAllItems">
<CollectionView.ItemsLayout>
<GridItemsLayout Orientation="Horizontal" Span="3"/>
</CollectionView.ItemsLayout>
<CollectionView.ItemTemplate>
<DataTemplate>
<Grid Padding="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="100" />
</Grid.RowDefinitions>
<Image Aspect="AspectFill" Source="{Binding .} "/>
</Grid>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
This is rendering the view as below
Why would this be? I thought the views should render as a Grid with 3 columns and 2 rows?
Thanks in advance.
Existing solution builds fine in VS2017.
Pulled it down from TFS to a new directory for testing in VS2019.
Everything builds including the java binding libraries and all projects.
Until it gets to the droid project that fails.
Doing all the standard things like clean, delete bin and obj and .vs directories to clear up the build problem don't help.
Anyone seen it or have a hint?
Hi,
Referring to this thread:
https://forums.xamarin.com/discussion/comment/370580#Comment_370580
when I changed from:
Navigation.PushModalAsync(new NavigationPage(new Signin())
{
BarBackgroundColor = Color.White,
BarTextColor = Color.Black
});
to:
await Navigation.PushModalAsync(new Signin());
now the popup is not showing the title bar
How can I fix this please?
Thanks,
Jassim
How do I pass selected Item of list view present in one page to the previous page in Xamarin. Forms?
Please Help
XF: 3.6.0.293080
Using the basic template for Master-Detail App with SplitOnLandscape MasterBehavior the menu/hamburger button does not work as expected. The button shows in the Landscape mode while it shouldn't and it gets hidden in the Portrait mode while we return back to the Detail page.
Master-Detail Forms app from the given templates.SplitOnLandscape as MasterBehavior.Hamburger/Menu button clicking which should show the Menu/Master page.Landscape which will hide the Hamburger/Menu button which is expected behavior.items on the Detail page which should take you to the item detail page. (at this point the orientation is still in Landscape)Portrait mode and press back button.Hamburger/Menu button in the navigation and the only way to show the drawer is to swift left-to-right.The app should show the Hamburger/Menu button in the Navigation page in Portrait mode and should hide in Landscape.
The app looses the Hamburger/Menu button after coming back to the detail page while changing the device orientation while we drill down the Detail page item.
Hi
I want to Bind category dynamically in 2 dimensional like
00 01 02
10 11 12
20 21 22
Please give some idea that I will achieve it.
Thanks
Can someone tell me what is better at the current moment? Xamarin Live Player is official, but still in development. Gorilla player seems more stable. Did you test them both so you can tell me the differences?
The App
I am attempting to make an app must have a client facing app and a business facing app. I have decided to use a web api for data extraction etc. I want to know whether it is a good idea to:
Bit of background info..
I would like to here from you which one makes the most sense. In terms of functionality, the client app will simply uses google maps to show places on a map and allows customers to interact with the places. The business side (the places) enables the user of the business to essentially see which customers have interacted with their place.
Hi im new and want to try out a Map on a Content page. And i get only a error with Java.Lang.SecurityException:
<ContentPage.BindingContext>
<viewModel:MapModel/>
</ContentPage.BindingContext>
<ContentPage.Content>
<StackLayout>
<maps:Map WidthRequest="320" HeightRequest="200"
IsShowingUser="true"
MapType="Hybrid"
VerticalOptions="Start"
HorizontalOptions="FillAndExpand"/>
</StackLayout>
</ContentPage.Content>
package="com.companyname.FirstApp" android:installLocation="auto">
<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="27" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<application android:label="FirstAPP.Android">
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="NOT_PUBLIC" />
</application>
I have no idea what are the Problem. Can you Help me?