DynamicWrapLayout

A Xamarin.Forms layout for creating dynamically wrapped views. Inspired by the WrapLayout example: https://developer.xamarin.com/samples/xamarin-forms/UserInterface/CustomLayout/WrapLayout/

Installation

It's on NuGet! https://www.nuget.org/packages/DynamicWrapLayout/

Install-Package DynamicWrapLayout

Be sure to install in all projects that use it.

Usage

There are two key properties that make this control useful - the ItemsSource (like a ListView) and the DataTemplate (although, you can also just add children to the view - it does both!) Be sure to wrap it in a ScrollView though

XAML

Add the xmlns:

xmlns:suave="clr-namespace:SuaveControls.DynamicWrapLayout;assembly=SuaveControls.DynamicWrapLayout"

Use it in your View:

<ScrollView>
    <suave:DynamicWrapLayout ItemsSource="{Binding Items}" HorizontalOptions="Fill">
        <suave:DynamicWrapLayout.ItemTemplate>
            <DataTemplate>
                <StackLayout BackgroundColor="Gray" WidthRequest="120" HeightRequest="180">
                    <Label Text="{Binding .}" TextColor="White" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" VerticalTextAlignment="Center" HorizontalTextAlignment="Center" />
                </StackLayout>
            </DataTemplate>
        </suave:DynamicWrapLayout.ItemTemplate>
    </suave:DynamicWrapLayout>
</ScrollView>

Don't like data-binding and want to just use child views? You can do that too!

<ScrollView>
    <suave:DynamicWrapLayout HorizontalOptions="Fill">
      <StackLayout BackgroundColor="Gray" WidthRequest="120" HeightRequest="180">
          <Label Text="0" TextColor="White" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" VerticalTextAlignment="Center" HorizontalTextAlignment="Center" />
      </StackLayout>
      <StackLayout BackgroundColor="Gray" WidthRequest="120" HeightRequest="180">
          <Label Text="1" TextColor="White" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" VerticalTextAlignment="Center" HorizontalTextAlignment="Center" />
      </StackLayout>
      <StackLayout BackgroundColor="Gray" WidthRequest="120" HeightRequest="180">
          <Label Text="2" TextColor="White" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" VerticalTextAlignment="Center" HorizontalTextAlignment="Center" />
      </StackLayout>
      <StackLayout BackgroundColor="Gray" WidthRequest="120" HeightRequest="180">
          <Label Text="3" TextColor="White" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" VerticalTextAlignment="Center" HorizontalTextAlignment="Center" />
      </StackLayout>
      <StackLayout BackgroundColor="Gray" WidthRequest="120" HeightRequest="180">
          <Label Text="4" TextColor="White" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" VerticalTextAlignment="Center" HorizontalTextAlignment="Center" />
      </StackLayout>
    </suave:DynamicWrapLayout>
</ScrollView>

Features

Bindable child views
Bindable to collections
Handles layout changing well (try rotating the device)
Doesn't require custom renderers (All Xamarin.Forms baby!)

What does this thing look like?

Android:

iOS:

Notes

This does not use any native view virtualization, which means performance does not scale well with extremely large data sets.

Coming soon

ItemSelected event and SelectedItem bindable property (for now, you can add custom gestures and commands to your DataTemplate and handle the events yourself)
Better Collection Updating

blueskybcl / dynamicwraplayout Goto Github PK