Greeting,
I'm developing an apps for Windows Phone 8.1 and face some problem with ListView.
I wanted to place a button for the FIRST item in ListView, but it seem like I can't align center the button.
Below is the code I use currently:
<ListView>
<Button Content="Jio!" Height="6" Width="362"/>
<ListViewItem Content="ListViewItem"/>
</ListView>
Adding horizontalalignment='center' just wont work for the button.
The reason I want to do this is because I wanted the button to scroll together with the list, hence I'm placing it inside the ListView.
Please advice what can I do to achieve my purpose, thanks!
I recommend using the ListView.Header content to place such a button instead of adding it as a child directly.
<ListView>
<ListView.Header>
<Button ... HorizontalAlignment="Center" />
</ListView.Header>
</ListView>
By default, the ListViewItems are left-aligned. You will eventually have to replace their Template in order to center-align it (HeaderTemplate Property).
Related
I have a
<CarouselView ItemsSource="{x:Static vm:MainPageViewModel.MyItems}">
<CarouselView.ItemTemplate>
<DataTemplate>
<StackLayout>
<Label Text="{Binding ID}"/>
<Label Text="{Binding Progress}"/>
...
I would like the <Label Text="{Binding Progress}"/> not to scroll off screen, but to stay fixed (at the top) and update as the user swipes through the CarouselView items. If I move the label outside of the CarouselView, it won't be data bound.
How can I keep the label fixed onscreen, but bound to the curren CarouselView item? (Do I need to do this via code behind?)
You can achieve this easily by binding the text property of the Label to the property in your ViewModel which will also do binding to the CurrentItem property of CarouselView.
Can you try something like this:
<Label Text="{x:Static vm:MainPageViewModel.MyCurrentItem.Progress}"/>
<CarouselView CurrentItem="{x:Static vm:MainPageViewModel.MyCurrentItem}"
ItemsSource="{x:Static vm:MainPageViewModel.MyItems}"
... other code
>
... other code
</CarouselView>
and in your ViewModel create a new bindable property of the same type as your MyItems list items are.
I have updated my GitHub repo with the example of this kind of behaviour:
You can find GitHub repo here.
and particular view here.
And here is a GIF of a running demo:
Label is above the CarouselView, and when you swipe and change the selected item, the value of label is changing according to the change of CarouselView.
Hope this was helpful for you, wishing you lots of luck with coding!
I have label title header, listview and button. All the controls need to scroll in the page. But Listview is taking more space when placed inside scroll view. Could anyone faced the issue like this?
Listview is already have a scrolling behaviour. Why using a view have scrolling property inside into another scrollview..? You can use Scrollview, if you have more than one listviews in your page.
If you still want to use bath views try to set this property of listview HasUnevenRows="True"
As stated before, it is generally a bad idea to have a ListView inside a ScrollView as stated here.
That being said, I replicated this issue and got the page to stop stretching by adding RowHeight to the ListView.
<ScrollView BackgroundColor="Black">
<StackLayout BackgroundColor="LightBlue">
<Label Text="BEFORE"/>
<ListView BackgroundColor="LightGray"
RowHeight="40">
<ListView.ItemsSource>
<x:Array Type="{x:Type x:String}">
<x:String>mono</x:String>
<x:String>monodroid</x:String>
<x:String>monotouch</x:String>
<x:String>monorail</x:String>
<x:String>monodevelop</x:String>
<x:String>monotone</x:String>
<x:String>monopoly</x:String>
<x:String>monomodal</x:String>
<x:String>mononucleosis</x:String>
</x:Array>
</ListView.ItemsSource>
</ListView>
<Label Text="AFTER"/>
</StackLayout>
</ScrollView>
Currently on my app i am populating a list view with various results which contain a slider, if the user right swipes they have the option to delete it, when they left swipe it nothing happens. Currently the slider can be hard to use because of the swipe motion in the list view, i want to keep the delete function in but is there any way i can remove the right swipe action? My app is cross platform but i would prefer to remove this from iOS.
This is how i am adding swipe functions:
<ViewCell.ContextActions>
<MenuItem Clicked="OnDelete" CommandParameter="{Binding .}"
Text="Remove" IsDestructive="True" />
<!-- <MenuItem Clicked="OnEdit" CommandParameter="{Binding .}"
Text="EDIT" IsDestructive="false" /> -->
</ViewCell.ContextActions>
The best solution I have discovered so far is to use the IsEnabled property. The swipe action/button will still appear, but it will be greyed out.
https://learn.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/menuitem#enable-or-disable-a-menuitem-at-runtime
Please try to use SwipeView control inside Listview or CollectionView
https://learn.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/swipeview
i have a button control in code as
Button>
<Button.Content>
<StackPanel Orientation='Horizontal' >
<TextBlock Text='{Binding ramDay, Mode=TwoWay}' Margin='0,-18,0,0' Style='{StaticResource PhoneTextTitle1Style}'/>
<TextBlock Text='{Binding enDay, Mode=TwoWay}' Margin='15,10,0,0' Style='{StaticResource PhoneTextTitle2Style}'/>
</StackPanel>
</Button.Content>
</Button>
but i want to create as many buttons as user want with different values of textboxes as user want them. but i am unable to find any way, kindly help me.
thanks
Create a custom user control in you project by using this code there. Thereafter in your mainPage in the code behind add the userControl dynamically to the grid present on the UI in a for-loop or any other method which you find suitable to your situation.
I have customized the button in this way:
<Button BorderBrush="Transparent" Name="DialButton" Click="DialButton_Click" >
<StackPanel Orientation="Horizontal">
<TextBlock FontSize="43" Name="lblNumber" Margin="0,-5,0,0" />
<TextBlock FontSize="12" Margin="5,20,0,0" Name="lblCharacter" />
</StackPanel>
</Button>
Now, when a user presses the button I want the OnPress state to change the color of the labels. I can do this if it's a simple button by changing the Pressed state. But my label is placed inside a stack panel. How can I change the color in this case? Or in which event can I change the colors of the labels from C#.
You can use the PropertyChangeAction in cases like this. You can find this in the behaviors category on the Assets tab in Expression Blend.
Apply this action on the labels. Change the trigger property to the DataTrigger instead of the default EventTrigger. Bind the trigger to the IsPressed property of the DialButton. Add two PropertyChangeActions per TextBlock and set the Value for one of the to true and the other one to false.
Here's an example for one of them. The other is exactly the same.
<TextBlock FontSize="43" x:Name="lblNumber" Margin="0,-5,0,0" Text="25">
<i:Interaction.Triggers>
<ec:DataTrigger Binding="{Binding IsPressed, ElementName=DialButton}" Value="true">
<ec:ChangePropertyAction PropertyName="Foreground">
<ec:ChangePropertyAction.Value>
<SolidColorBrush Color="Red"/>
</ec:ChangePropertyAction.Value>
</ec:ChangePropertyAction>
</ec:DataTrigger>
<ec:DataTrigger Binding="{Binding IsPressed, ElementName=DialButton}" Value="false">
<ec:ChangePropertyAction PropertyName="Foreground">
<ec:ChangePropertyAction.Value>
<SolidColorBrush Color="{StaticResource PhoneForegroundColor}"/>
</ec:ChangePropertyAction.Value>
</ec:ChangePropertyAction>
</ec:DataTrigger>
</i:Interaction.Triggers>
</TextBlock>
If the i: or ec: isn't working, make sure you've got these lines at the top of your xaml file.
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:ec="clr-namespace:Microsoft.Expression.Interactivity.Core;assembly=Microsoft.Expression.Interactions"
You'll need to turn this into a custom control and then you can manage the styling of each component based on the state.
Try this in the click event of button
Button butClicked = (Button)sender;
StackPanel panel1 = (StackPanel)butClicked.Content;
var child1Panel1 = panel1.Children[0] as TextBlock;
child1Panel1.Foreground = new SolidColorBrush(Color.FromArgb(255, 18, 18, 18));
If you're only going to use this button once, probably the easiest way would be to open the .xaml file in Expression Blend, and use Blend to customize the button as you wish, including the state change. If you're using the button in more than one place, do as Matt suggested and make it a custom control (which you can also use Blend to design) that you can reuse.