public iOSListViewWithCellPageCS()
{
var personDataTemplate = new DataTemplate(() =>
{
var grid = new Grid();
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.7, GridUnitType.Star)
});
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.3, GridUnitType.Star)
});
var nameLabel = new Label();
var ageLabel = new Label {
HorizontalOptions = LayoutOptions.End
};
nameLabel.SetBinding(Label.TextProperty, "Name");
ageLabel.SetBinding(Label.TextProperty, "Age");
grid.Children.Add(nameLabel);
grid.Children.Add(ageLabel, 1, 0);
return(new ViewCell {
View = grid
});
});
var groupHeaderTemplate = new DataTemplate(() =>
{
var label = new Label {
Margin = new Thickness(10, 10), FontAttributes = FontAttributes.Bold
};
label.SetBinding(Label.TextProperty, "Key");
var viewCell = new ViewCell {
View = label
};
viewCell.On <iOS>().SetDefaultBackgroundColor(Color.Teal);
return(viewCell);
});
var listView = new Xamarin.Forms.ListView {
IsGroupingEnabled = true, ItemTemplate = personDataTemplate, GroupHeaderTemplate = groupHeaderTemplate
};
listView.SetBinding(ItemsView <Xamarin.Forms.Cell> .ItemsSourceProperty, "GroupedEmployees");
listView.On <iOS>()
.SetSeparatorStyle(SeparatorStyle.FullWidth)
.SetRowAnimationsEnabled(false)
.SetGroupHeaderStyle(GroupHeaderStyle.Grouped);
Title = "ListView/Cell Platform-Specifics";
Content = new StackLayout
{
Margin = new Thickness(20),
Children = { listView }
};
BindingContext = new ListViewViewModel(20);
}
public iOSPanGestureRecognizerPageCS()
{
Xamarin.Forms.Application.Current.On <iOS>().SetPanGestureRecognizerShouldRecognizeSimultaneously(true);
var messageLabel = new Label {
Text = "Scroll the list. If you touch the age Label, this Label will change", FontAttributes = FontAttributes.Bold
};
var toggleButton = new Button {
Text = "Toggle Simultaneous Gesture Recognition"
};
toggleButton.Clicked += (sender, e) =>
Xamarin.Forms.Application.Current.On <iOS>().SetPanGestureRecognizerShouldRecognizeSimultaneously(
!Xamarin.Forms.Application.Current.On <iOS>().GetPanGestureRecognizerShouldRecognizeSimultaneously());
var personDataTemplate = new DataTemplate(() =>
{
var grid = new Grid();
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.7, GridUnitType.Star)
});
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.3, GridUnitType.Star)
});
var nameLabel = new Label();
nameLabel.SetBinding(Label.TextProperty, "Name");
var ageLabel = new Label {
HorizontalOptions = LayoutOptions.End
};
ageLabel.SetBinding(Label.TextProperty, "Age");
var panGestureRecognizer = new PanGestureRecognizer();
panGestureRecognizer.PanUpdated += (sender, e) => messageLabel.Text = $"panned x:{e.TotalX} y:{e.TotalY}";;
ageLabel.GestureRecognizers.Add(panGestureRecognizer);
grid.Children.Add(nameLabel);
grid.Children.Add(ageLabel, 1, 0);
return(new ViewCell {
View = grid
});
});
var listView = new Xamarin.Forms.ListView {
IsGroupingEnabled = true, ItemTemplate = personDataTemplate
};
listView.SetBinding(ItemsView <Cell> .ItemsSourceProperty, "GroupedEmployees");
listView.GroupDisplayBinding = new Binding("Key");
Title = "Pan Gesture Recognizer";
Content = new StackLayout
{
Margin = new Thickness(20),
Children = { messageLabel, toggleButton, listView }
};
BindingContext = new ListViewViewModel();
}
public AndroidListViewFastScrollPageCS()
{
var personDataTemplate = new DataTemplate(() =>
{
var grid = new Grid();
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.7, GridUnitType.Star)
});
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.3, GridUnitType.Star)
});
var nameLabel = new Label();
var ageLabel = new Label {
HorizontalOptions = LayoutOptions.End
};
nameLabel.SetBinding(Label.TextProperty, "Name");
ageLabel.SetBinding(Label.TextProperty, "Age");
grid.Children.Add(nameLabel);
grid.Children.Add(ageLabel, 1, 0);
return(new Xamarin.Forms.ViewCell {
View = grid
});
});
var listView = new Xamarin.Forms.ListView {
IsGroupingEnabled = true, ItemTemplate = personDataTemplate
};
listView.SetBinding(ItemsView <Cell> .ItemsSourceProperty, "GroupedEmployees");
listView.GroupDisplayBinding = new Binding("Key");
listView.On <Android>().SetIsFastScrollEnabled(true);
var button = new Xamarin.Forms.Button {
Text = "Toggle FastScroll"
};
button.Clicked += (sender, e) => { listView.On <Android>().SetIsFastScrollEnabled(!listView.On <Android>().IsFastScrollEnabled()); };
Title = "ListView FastScroll";
Content = new StackLayout
{
Margin = new Thickness(20),
Children =
{
button,
listView
}
};
BindingContext = new ListViewViewModel();
}
public iOSListViewPageCS()
{
var personDataTemplate = new DataTemplate(() =>
{
var grid = new Grid();
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.7, GridUnitType.Star)
});
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.3, GridUnitType.Star)
});
var nameLabel = new Label();
var ageLabel = new Label {
HorizontalOptions = LayoutOptions.End
};
nameLabel.SetBinding(Label.TextProperty, "Name");
ageLabel.SetBinding(Label.TextProperty, "Age");
grid.Children.Add(nameLabel);
grid.Children.Add(ageLabel, 1, 0);
return(new ViewCell {
View = grid
});
});
var listView = new Xamarin.Forms.ListView {
IsGroupingEnabled = true, ItemTemplate = personDataTemplate
};
listView.SetBinding(ItemsView <Cell> .ItemsSourceProperty, "GroupedEmployees");
listView.GroupDisplayBinding = new Binding("Key");
listView.On <iOS>().SetSeparatorStyle(SeparatorStyle.FullWidth);
Title = "ListView FullWidth Separators";
Content = new StackLayout
{
Margin = new Thickness(20),
Children = { listView }
};
BindingContext = new ListViewViewModel();
}
public AndroidListViewFastScrollPage()
{
InitializeComponent();
BindingContext = new ListViewViewModel();
}
public WindowsListViewPageCS()
{
var personDataTemplate = new DataTemplate(() =>
{
var grid = new Grid();
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.7, GridUnitType.Star)
});
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(0.3, GridUnitType.Star)
});
var nameLabel = new Xamarin.Forms.Label();
var ageLabel = new Xamarin.Forms.Label {
HorizontalOptions = LayoutOptions.Center
};
nameLabel.SetBinding(Xamarin.Forms.Label.TextProperty, "Name");
ageLabel.SetBinding(Xamarin.Forms.Label.TextProperty, "Age");
var tapGestureRecognizer = new TapGestureRecognizer();
tapGestureRecognizer.Tapped += async(sender, e) =>
{
await DisplayAlert("Tap Gesture Recognizer", "Tapped event fired.", "OK");
};
nameLabel.GestureRecognizers.Add(tapGestureRecognizer);
grid.Children.Add(nameLabel);
grid.Children.Add(ageLabel, 1, 0);
return(new ViewCell {
View = grid
});
});
_listView = new Xamarin.Forms.ListView {
IsGroupingEnabled = true, ItemTemplate = personDataTemplate
};
_listView.SetBinding(ItemsView <Cell> .ItemsSourceProperty, "GroupedEmployees");
_listView.GroupDisplayBinding = new Binding("Key");
_listView.ItemTapped += async(sender, e) =>
{
await DisplayAlert("Item Tapped", "ItemTapped event fired.", "OK");
};
_listView.On <Windows>().SetSelectionMode(ListViewSelectionMode.Inaccessible);
var button = new Button {
Text = "Toggle SelectionMode"
};
button.Clicked += (sender, e) =>
{
switch (_listView.On <Windows>().GetSelectionMode())
{
case ListViewSelectionMode.Accessible:
_listView.On <Windows>().SetSelectionMode(ListViewSelectionMode.Inaccessible);
break;
case ListViewSelectionMode.Inaccessible:
_listView.On <Windows>().SetSelectionMode(ListViewSelectionMode.Accessible);
break;
}
UpdateLabel();
};
_label = new Xamarin.Forms.Label {
HorizontalOptions = LayoutOptions.Center
};
Title = "ListView Selection Mode";
Content = new StackLayout
{
Margin = new Thickness(20),
Children = { _listView, button, _label }
};
BindingContext = new ListViewViewModel();
UpdateLabel();
}
public iOSListViewWithCellPage()
{
InitializeComponent();
BindingContext = new ListViewViewModel(20);
}
public WindowsListViewPage()
{
InitializeComponent();
BindingContext = new ListViewViewModel();
UpdateLabel();
}
public iOSPanGestureRecognizerPage()
{
InitializeComponent();
BindingContext = new ListViewViewModel();
}