I'm creating a listView of videos and I need this button which fills the video screen, so I implement this MediaElement:
xmlns:xct="http://xamarin.com/schemas/2020/toolkit"
<xct:MediaElement Grid.Row="0"
Aspect="AspectFill"
HeightRequest="{OnIdiom Phone=170,
Tablet=170,
Desktop=170}"
WidthRequest="{OnIdiom Phone=343,
Tablet=343,
Desktop=423}"
Source="urllllllllllllllllllll"
AutoPlay="True" Background="transparent" IsTabStop="True" ShowsPlaybackControls="True"/>
And this is the result:
But I need to add a full screen icon button and make it work.
Related
I have a Skiasharp canvas that I want to draw markers on when I tap the image. I have this code:
<skia:SKCanvasView Grid.Row="0"
Grid.Column="0"
Grid.ColumnSpan="3"
HorizontalOptions="FillAndExpand"
VerticalOptions="FillAndExpand"
EnableTouchEvents="True"
Touch="MarkDamage">
<!-- The Behaviours element binds the canvas to a command responsible for drawing in it. -->
<skia:SKCanvasView.Behaviors>
<behaviour:PaintSurfaceCommandBehavior Command="{Binding ShowDamageScreenCommand}" />
</skia:SKCanvasView.Behaviors>
</skia:SKCanvasView>
Note the Touch=MarkDamage attribute. That successfully binds to this method:
public void MarkDamage(object sender, SKTouchEventArgs e)
According to this answer, all the things I need to draw on my canvas are inside the parameters I'm passed. But I'm struggling to see how. All I want to do is draw a really simple circle on my canvas when I tap it.
You can see from the image below, the chart lines don't go all the way to the edge of the StackLayout container. I've tried adding negative margins on the StackLayout but they're inconsistent depending on how much data I have in the chart and the margins can fluctuate. And between Android & iOS, the margins are always different.
Nativescript Playground sample:
play.nativescript.org/?template=play-ng&id=I8lOBP
This is the bad version:
In the image, you'll notice on the right and left edges, there's dark strips of the emulator window. I'm looking for a way for the red area line to touch those edges. It's hard to see in the image but the bottom also needs to touch the bottom of the StackLayout container.
<StackLayout>
<RadCartesianChart
height="100%"
width="100%"
class="default-background">
<CategoricalAxis
lineColor="#f5f5f5"
hidden="true"
lineHidden="true"
lineThickness="1"
labelLayoutMode="Inner"
tkCartesianHorizontalAxis>
</CategoricalAxis>
<LinearAxis
lineColor="#f5f5f5"
hidden="true"
lineHidden="true"
lineThickness="1"
labelLayoutMode="Inner"
[maximum]="max"
[minimum]="min"
tkCartesianVerticalAxis>
</LinearAxis>
<AreaSeries
tkCartesianSeries
seriesName="Area"
showLabels="false"
categoryProperty="Date"
[items]="areaSource$ | async"
valueProperty="Amount"
selectionMode="None">
</AreaSeries>
<RadCartesianChartGrid
tkCartesianGrid
horizontalLinesVisible="false"
verticalLinesVisible="false"
verticalStripLinesVisible="false"
horizontalStripLinesVisible="false"
horizontalStrokeColor="#181818">
</RadCartesianChartGrid>
<Palette tkCartesianPalette seriesName="Area">
<PaletteEntry
tkCartesianPaletteEntry
opacity="1"
[fillColor]="fillColor"
[strokeColor]="lineColor"
android:strokeWidth="4"
ios:strokeWidth="2">
</PaletteEntry>
<PaletteEntry
tkCartesianPaletteEntry
[fillColor]="fillColor"
strokeColor="#181818"
strokeWidth="0">
</PaletteEntry>
</Palette>
</RadCartesianChart>
</StackLayout>
Here's what I want it to look like (credit: photoshop).
You should be setting the horizontalZoom property, probably upping its current value by about 30%.
const screen = require("tns-core-modules/platform").screen;
let widthDIPs = screen.mainScreen.widthDIPs;
<StackLayout>
<RadCartesianChart
height="100%"
[width]="widthDIPs"
class="default-background">
<CategoricalAxis
(...)
src: https://docs.nativescript.org/angular/ui/styling#supported-measurement-units
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="LeaveManagerApp.UpcomingLeavesPage"
xmlns:controls="clr- namespace:XamForms.Controls;assembly=XamForms.Controls.Calendar"
>
<Grid >
<controls:Calendar
x:Name="MyLeaveCalendar"
ShowNumberOfWeek="false"
StartDay="Sunday"
WeekdaysBackgroundColor="DarkBlue"
TitleLabelTextColor="DarkBlue"
SelectedDate="{Binding Date}"
SpecialDates="{Binding Attendances}"
DateCommand="{Binding DateChosen}"
>
</controls:Calendar>
</Grid>
How to fit calendar to screen size in xamarin form ,
i am using calendar control of xamarin form ,tried HeightRequest but its not working.
This is not a default Xamarin.Forms control, it originates from here: https://github.com/rebeccaXam/XamForms.Controls.Calendar
It looks like the control is rendered with a fixed height. Searching through the issues, I found this one: https://github.com/rebeccaXam/XamForms.Controls.Calendar/issues/54
You can influence the height of a row with this code:
yourCalendar.OnEndRenderCalendar += (sender, e) =>
{
(calendar.Content as StackLayout).Children.Last().HeightRequest = 500;
};
The only thing you need to do is determine the right height, build something yourself for it or open an issue on the repo.
You should post a full XAML code but as per Xamarin standard how to expand full view of child control. Check the below code.
<Grid VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
<controls:Calendar
x:Name="MyLeaveCalendar"
ShowNumberOfWeek="false"
StartDay="Sunday"
WeekdaysBackgroundColor="DarkBlue"
TitleLabelTextColor="DarkBlue"
SelectedDate="{Binding Date}"
SpecialDates="{Binding Attendances}"
DateCommand="{Binding DateChosen}"
VerticalOptions="FillAndExpand"
HorizontalOptions="FillAndExpand">
</controls:Calendar>
</Grid>
And also it's depend on Xamarin Layout which layout you are using for XAML design. And how to use XAML extensible language in Xamarin form Please check the link.
https://learn.microsoft.com/en-us/xamarin/xamarin-forms/xaml/
In a ContentPage I have a ListView inside a StackLayout inside a ScrollView. The ListView is populated (ItemSource is set) in the ContentPage when OnAppearing gets called and I can see that the list is populated in the emulator. The StackLayouts orientation is Vertical and below the ListView I have a Button.
My problem is that no matter how many elements the ListView has, it gets the height of 53.33. I would like the height of the ListView to match the total height of the items in it. By setting HeightRequest I can set the height of the ListView to anything I want, but since I do not know the height of the items inside the ListView the result is most often that the distance to the button below it is incorrect and therefore looks ugly. I have tried to set VerticalOptions on both the ListView and the StackLayout to Startand other settings, but this does not change the height from 53.33 (and if I try to combine using HeightRequest and Start it turns out that HeightRequest wins out).
How can I solve this?
(please excuse the cross posting from Xamarin forum)
With the new BindableLayout feature in Xamarin Forms 3.5 you can easily use the ItemsSource on StackPanel.
So, basically you can write something like this:
<StackLayout BindableLayout.ItemsSource="{Binding list}">
<BindableLayout.ItemTemplate>
<DataTemplate>
...
</DataTemplate>
</BindableLayout.ItemTemplate>
</StackLayout>
You can read more about it here: https://blog.xamarin.com/xamarin-forms-3-5-a-little-bindable-love/
The solution in my case was to put the ListView inside a StackLayout and then put that StackLayout inside the main StackLayout. Then I could set the VerticalOptions = LayoutOptions.FillAndExpand on the inner StackLayout (the one containing the ListView) with the result that the ListView got the space it needed (which of course varies depending on the data).
Here is the main code:
listView.ItemsSource = alternativeCells;
listView.ItemSelected += ListViewOnItemSelected;
var listStackLayout = new StackLayout
{
VerticalOptions = LayoutOptions.FillAndExpand,
Orientation = StackOrientation.Vertical
};
listStackLayout.Children.Add(listView);
_stackLayout.Children.Add(listStackLayout);
As you see, I added a new StackLayout with the only purpose of putting the ListView inside it. Then I put that listStackLayout inside the main _stackLayout.
See the post on this Xamarin forum post for more information
I ran into the same problem, and for me this worked like a charm:
listView.HasUnevenRows = true;
(http://developer.xamarin.com/guides/cross-platform/xamarin-forms/working-with/listview/#Display_Rows_with_Variable_Heights)
I had the same problem, and this was the only thing I did that solved for me (in XAML):
<StackLayout Orientation="Vertical"
VerticalOptions="Fill"
HorizontalOptions="StartAndExpand">
<ListView VerticalOptions="FillAndExpand"
RowHeight="<some row height>">
</ListView>
</StackLayout>
Hope it works!
Below code worked for me,
protected override void OnAppearing()
{
base.OnAppearing();
listViewOrderCloths.HeightRequest = model.ListOrderedCloths.Count*100)/2 ;
}
I had a similar struggle, with a slightly different solution. First, setting a RowHeight on the ListView seemed to be pivotal. Second, I was running into a binding + timing issue. If the ListView was displayed and had no contents, it was set to a default height (showing the empty space). If I moved away from this page and came back, the size was fine.
So my approach was to bind the ListView's visibility to the presence (or lack of) something being bound to. Then when data came back, the ListView became visible and had the proper size.
<ListView x:Name="lvSettlements" ItemsSource="{Binding RecentSettlements}" VerticalOptions="FillAndExpand" RowHeight="25" IsVisible="{Binding RecentSettlements, Converter={StaticResource nullConverter}}">
...SNIP...
</ListView>
On Android, my table created in code was leaving gaps above and below it.
This fixed it...
HeightRequest="1000000"
I think I have the hackiest solution.
The accepted answer wasn't applicable to my situation, where my ListView might be longer then the length of the display, hence it needs be placed within a ScrollView, which brings back the empty space.
They way I solved this, was to have top level StackLayout and then place the ListView in an immediate ScrollView, like the following XAML:
<?xml version="1.0" encoding="utf-8" ?>
<local:ContentPage>
<StackLayout x:Name="entirePage">
<ScrollView VerticalOptions="FillAndExpand"
Orientation="Vertical">
<ListView x:Name="listView" ItemsSource="{Binding Items}"
Margin="0">
<!-- ListView Stuff -->
</ListView>
</ScrollView>
</StackLayout><!--entirePage-->
</local:ContentPage >
I'm new in Windows phone 8 development and I have problem to add button on MapLayer.
I'd like to display a button over a map so I just draw it on the map widget like this:
<Grid x:Name="MyMapGrid" Margin="10,-15,15,0" VerticalAlignment="Top" Height="296" >
<maps:Map x:Name="MyMapi" Center="31.765537,35.106812" ZoomLevel="7" Margin="0,0,0,0" VerticalAlignment="Top" Height="296" Width="442" />
<Button x:Name="myCustomButton" Visibility="Visible" Content="" HorizontalAlignment="Left" Margin="347,0,0,0" VerticalAlignment="Top" Width="84" Height="84" BorderThickness="0">
<Button.Background>
<ImageBrush ImageSource="/myZoom.png"/>
</Button.Background>
</Button>
</Grid>
After this action I need to put some icons on the map so I used MapOverlay and MapLayer like this:
Map MyMap = new Map();
MapOverlay overlay = new MapOverlay
{
GeoCoordinate = MyMap.Center,
Content = new Image()
{
Source = new BitmapImage(new Uri("customIcon.png", UriKind.Relative)),
}
};
MapLayer layer = new MapLayer();
layer.Add(overlay);
MyMap.Layers.Add(layer);
MyMapGrid.Children.Add(MyMap);
I also need my button (myCustomButton) will stay visible - but it disappear.
how can I still have some button over the map and also view some icons on it?
Thank you all!
For button Change the path to definite like ImageSource="/Assets/Icon/location.png" with the folder name and make sure that BuildAction is set to content for that image
For icon also try the same.