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How to recognize element in which item in the gridview


How to recognize element in which item in the gridview

By : Carlos Gao
Date : November 22 2020, 04:01 AM
I think the issue was by ths following , Lets consider your item is an object of a class LineItem. Once the button click is triggered, you can use sender from click event argument to get DataContext which will be the same object.
code :
<Page
    x:Class="App1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App1"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d" 
    x:Name="YourPage"

    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
    <Grid>
        <GridView x:Name="GridView">
            <GridView.ItemTemplate>
                <DataTemplate x:DataType="local:LineItem">
                    <StackPanel>
                        <TextBlock Text="{x:Bind Title}"></TextBlock>
                        <TextBlock Text="{x:Bind  description}"></TextBlock>
                        <Button Content="Action" Click="Button_Click"></Button>
                    </StackPanel>
                </DataTemplate>
            </GridView.ItemTemplate>
        </GridView>
    </Grid>
</Page>
public sealed partial class MainPage : Page
    {
        List<LineItem> MyDictionary = new List<LineItem>();
        public MainPage()
        {
            MyDictionary.Add(new LineItem() { Title = "Item1", description = "Desc1" });
            MyDictionary.Add(new LineItem() { Title = "Item2", description = "Desc2" });
            MyDictionary.Add(new LineItem() { Title = "Item3", description = "Desc3" });
            this.InitializeComponent();
            GridView.ItemsSource = MyDictionary;
        }
        private async void Button_Click(object sender, RoutedEventArgs e)
        {
            LineItem clicked_item  =(LineItem)((sender as FrameworkElement).DataContext);
            await (new MessageDialog(clicked_item.Title + " Button is clicked ")).ShowAsync();
        }
    }
    public class LineItem
    {
        public string Title { get; set; }
        public string description { get; set; }
    }


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How to fix gridview item sizes (width and height) when I put an image on view item in Gridview

How to fix gridview item sizes (width and height) when I put an image on view item in Gridview


By : Simon Glimeld
Date : March 29 2020, 07:55 AM
hop of those help? I have a gridview that has multi items (buttons) I bind background for each item in my adapter , You can set LayoutParams with fixed size to avoid resizing the view
code :
LayoutParams params = new LayoutParams(width, height);
btn.setLayoutParams(params);
Dragging a GridViewitem from a GridView to create a copy (leaving the item in the gridview)

Dragging a GridViewitem from a GridView to create a copy (leaving the item in the gridview)


By : user3061878
Date : March 29 2020, 07:55 AM
may help you . The quick answer is no. Especially since you said "easy way". The concept of adorners which is in WPF isn't part of WinRT. You can always create something that floats under the pointer, for sure. That's a real option. But drag and drop is only partly implemented in W8.x XAML.
How to get GridView and GridView Item to Inflate in a Fragment while using Custom CursorAdapter and Cursor Loader?

How to get GridView and GridView Item to Inflate in a Fragment while using Custom CursorAdapter and Cursor Loader?


By : J. Hall
Date : March 29 2020, 07:55 AM
I wish this help you I believe the issue is I was using a coordinator layout with the GridView. I have now seen prior posts explaining that the coordinator layout and Gridview dont work together. There were several workarounds presented but I could not figure out how to implement these with my particular project. I scrapped the coordinator layout and got the gridview to work properly. I did have an issue with trying to cast a uri to cursor in the cursor adapter which I changed to get it to work. I am still open to other solutions to get these to work together because the coordinator layout is smooth and more precise appearing.
How to get data of hashmap of custom gridview adapter when clicked on gridview item?

How to get data of hashmap of custom gridview adapter when clicked on gridview item?


By : Paul Hickey
Date : March 29 2020, 07:55 AM
hope this fix your issue In my app I am trying to save data using ArrayList> below is my code: , In onItemClick
code :
HashMap<String, String> map = (HashMap<String, String>)arg0.getItemAtPosition(position);
String id = map.get("material_id");
how to remove null item count in GridView? [Group wise GridView Issue]

how to remove null item count in GridView? [Group wise GridView Issue]


By : user2635016
Date : March 29 2020, 07:55 AM
it should still fix some issue Need to create group wise grid view. I am almost done. My json looks like this, , Here you go:
code :
 Widget createListView(BuildContext context, AsyncSnapshot snapshot) {
    List<Data> values = snapshot.data;
    final pIntValues = values.map<int>((m) => m.p.toInt()).toSet().toList(growable: false)..sort();

    return CustomScrollView(
      slivers: <Widget>[
        SliverList(
          delegate: SliverChildBuilderDelegate((context, i) {
            final p = pIntValues[i];
            final items = values
                .where((m) => p <= m.p && m.p < p + 1)
                .toList(growable: false)
                  ..sort((a, b) => a.p.compareTo(b.p));
//check if not items, return Container if true
            if(items.length == 0)
              return Container(); 
            return GridView.builder(
              itemCount: items.length,
              shrinkWrap: true,
              primary: false,
             gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 4),
              itemBuilder: (context, i) {
                final item = items[i];
                return _builderItem(item);
              },
            );
          }, childCount: pIntValues.length),
        )
      ],
    );
  }
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