I have a Datepicker in Javafx 8.
I have used this Code but it not take the komplett Size for the Views
final DatePicker datePicker = new DatePicker(LocalDate.now());
DatePickerSkin datePickerSkin = new DatePickerSkin(datePicker);
javafx.scene.Node popupContent = datePickerSkin.getPopupContent();
datePicker.setMaxHeight(6000.);
datePicker.setMinHeight(6000.);
datePicker.setPrefHeight(6000.);
datePicker.setOnAction((event) -> {
LocalDate date = datePicker.getValue();
System.err.println("Selected date: " + date);
});
primary1.setTop(popupContent);
I want to make it (Datepicker) fullscreen.
Related
I have a listview with labels and entries. I want a gesture or somthing that when I long press a label it wil show an alert display with the name of the label. So far I have only when you press once, need the same but then when you press longer.
My code of the listview
var listView = new ListView();
var productDataTemplate = new DataTemplate(() =>
{
var grid = new Grid();
grid.RowDefinitions.Add(new RowDefinition
{
Height = new GridLength(2, GridUnitType.Star)
});
var typeLabel = new Label { FontAttributes = FontAttributes.Bold,
BackgroundColor = Color.White};
typeLabel.SetBinding(Label.TextProperty, "Type");
var entry = new Entry
{
TextColor = Color.Black,
BackgroundColor = Color.White
};
entry.SetBinding(Entry.TextProperty, "Quantity");
grid.Children.Add(typeLabel,0,0);
grid.Children.Add(entry,1,0);
grid.BackgroundColor = Color.Black;
return new ViewCell { View = grid };
});
listView.ItemTemplate = productDataTemplate;
listView.ItemsSource = products;
listView.ItemSelected += (sender, e) => {
DisplayAlert("item tapped", e.SelectedItem.ToString(), "ok");
};
wrapLayout.Children.Add(listView);
AFAIK Xamarin.forms by default supports Tap, Pinch & Pan gesture. So to do long press you need to handle with the CustomRenderer for each supported platforms or you can make use of XForms lab which by default supports most of the gestures which includes Long Press. Hope that helps!
I'm using the mvvm approach to develop a barcode scanning app with xamarin. The main hurdle was that the 3rd party scanner object does not work in xaml. I used a ContentPage to create a simple logic-less c# code view which allows me to have a footer with buttons and a logo overlayed at the bottom of the scanner. My problem is that could not find any great best practices for binding items from your code view to your viewModel, as opposed binding a xaml view to a viewModel. Here is some of my view below.
public class BarcodeScannerPage : ContentPage
{
ZXingScannerView zxing;
BarcodeViewModel viewModel;
public BarcodeScannerPage() : base()
{
try
{
viewModel = new BarcodeViewModel();
BindingContext = viewModel;
zxing = new ZXingScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Options = new MobileBarcodeScanningOptions
{
TryHarder = true,
DelayBetweenContinuousScans = 3000
},
ScanResultCommand = viewModel.GetResult
};
var cancelButton = new Button
{
BackgroundColor = Color.Gray,
Text = "Cancel",
TextColor = Color.Blue,
FontSize = 15,
Command = viewModel.CancelButton
};
Binding cancelBinding = new Binding
{
Source = viewModel.CancelIsAvailable,
//Path = "ShowCancel",
Mode = BindingMode.OneWay,
};
cancelButton.SetBinding(IsVisibleProperty, cancelBinding);
var doneButton = new Button
{
BackgroundColor = Color.Gray,
Text = "Done",
TextColor = Color.Blue,
FontSize = 15,
Command = viewModel.DoneButton
};
Binding doneBinding = new Binding
{
Source = viewModel.DoneIsAvailable,
//Path = "ShowDone",
Mode = BindingMode.OneWay,
};
doneButton.SetBinding(Button.IsVisibleProperty, doneBinding);
When a barcode is scanned my command, GetResultCommand, sends the result to my BarcodeView model. I have created two Bools in my BarcodeView model named isDoneAvailable and isCancelAvailable. I want to bind these values to the Visibility property of the doneButton and cancelButton in my view. Right now the buttons are bound to whatever the bool values are at the creation of BarcodeViewModel, but they DO NOT update. I need to be able to control visibility from the GetResultCommand method of my BarcodeViewModel. Specifically, when a certain number of barcodes are scanned, I want to make the buttons appear and disappear. I have a feeling they don't update because the path is not set, but when I uncomment the path, the binding doesn't work at all. Any ideas what I've done wrong with the bindings of the buttons, or the correct way to set the Path to my bools in the viewModel? Here is some of my BarcodeViewModel code below.
public class BarcodeViewModel : INotifyPropertyChanged
{
public bool CancelIsAvailable { get { return _cancelIsAvailable; } set { _cancelIsAvailable = value; OnPropertyChanged("ShowCancel"); } }
public bool DoneIsAvailable { get { return _doneIsAvailable; } set { _doneIsAvailable = value; OnPropertyChanged("ShowDone"); } }
public void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this,
new PropertyChangedEventArgs(propertyName));
}
}
I still would like to know the correct way to get this binding to update but, I was able to work-around this issue by creating a button in my viewModel and referencing it in my view. Then when I dynamically updated the button in my viewModel, it also updated in my view.
In a vaadin FormLayout i want to show multiple components(field).
You can build custom Component that extends com.vaadin.ui.CustomComponent (example below).
If you want to use fields binding, things get more complicated and you should probably extend com.vaadin.ui.AbstractField and override some more methods.
SuperCustom dateSelection = new SuperCustom("Caption on left side in FormLayout");
formLayout.addComponent(dateSelection);
class SuperCustom extends CustomComponent {
ComboBox ordinal = new ComboBox();
ComboBox day = new ComboBox();
ComboBox month = new ComboBox();
public SuperCustom(String caption) {
setCompositionRoot(new HorizontalLayout(ordinal, day, new Label("of"), month));
configureComponents();
setCaption(caption);
}
private void configureComponents() {
//fill comboboxes
}
public Date getValue() {
//build date based on fields
return date;
}
}
I am trying to populate a listview with a customcell I made. I know how to do it with a tableview, but i have no idea how to do it with a listview. Can someone explain to me please, thank you
Excuse the very rough snippet of code but it is merely to explain the concept behind listviews and databinding.
In my example below I create a listview, assign a custom viewCell and bind the view cell to a model. The model data is populated by XML data retrieved from the server(Code emitted for simplicity). Simpler implementations can be done should you require a listview with hardcoded data.
I suggest reading through the http://developer.xamarin.com/guides/cross-platform/xamarin-forms/introduction-to-xamarin-forms/ and researching the MVVM principle
Additionally the best example code I have found to go through is an enlightening application written by James Montemagno https://github.com/jamesmontemagno/Hanselman.Forms
public TestPage()
{
private ListView listView; // Create a private property with the Type of Listview named listview
listView = new ListView(); //Instantiate the listview
var viewTemplate = new DataTemplate(typeof(CustomViewCell)); //Create a variable for the custom data template
listView.ItemTemplate = viewTemplate; // set the data template to the variable created above
this.Content = new StackLayout()
{
Children = {
listView
}
};
}
Custom View Cell:
public class CustomViewCell : ViewCell
{
public CustomViewCell()
{
Label Test = new Label()
{
Font = Font.BoldSystemFontOfSize(17),
TextColor = Helpers.Color.AppGreen.ToFormsColor(),
BackgroundColor = Color.White
};
var image = new Image();
image.Source = ImageSource.FromFile("testing.png");
Label Test2 = new Label();
tour_Desc.SetBinding(Label.TextProperty, "Test");
round_Desc.SetBinding(Label.TextProperty, "Test2");
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
RowDefinitions =
{
new RowDefinition {Height = GridLength.Auto },
new RowDefinition {Height = GridLength.Auto },
new RowDefinition {Height = 1}
},
ColumnDefinitions =
{
new ColumnDefinition {Width = GridLength.Auto},
new ColumnDefinition {Width = new GridLength(1, GridUnitType.Star)},
new ColumnDefinition {Width = 80 }
}
,BackgroundColor = Color.White,
};
grid.Children.Add(image, 0, 0);
Grid.SetRowSpan(image, 2);
grid.Children.Add(tour_Desc, 1, 0);
Grid.SetColumnSpan(tour_Desc, 2);
grid.Children.Add(Test, 1, 1);
grid.Children.Add(Test2, 1, 2);
this.View = grid;
}
}
View Model:
public partial class GamesResult
{
public string Test { get; set; }
public string Test1 { get; set; }
}
I've got the following code being called in view the viewdidload method inside of my UIViewController.
Inside the appdelegate I have a UINavigationController which is instantiated with this aforementioned controller and in turn the UINavigationController is placed inside a UITabViewController which in turn is assigned as the rootviewcontroller.
Inside the controller I'm making an async web call to get the data to populate a table, if I use the loading view code to display an activity indicator I get the following warning in monotouch.
Applications are expected to have a root view controller at the end of application launch
public class LoadingView : UIAlertView
{
private UIActivityIndicatorView _activityView;
public void ShowActivity (string title)
{
Title = title;
this.Show();
// Spinner - add after Show() or we have no Bounds.
_activityView = new UIActivityIndicatorView (UIActivityIndicatorViewStyle.WhiteLarge);
_activityView.Frame = new RectangleF ((Bounds.Width / 2) - 15, Bounds.Height - 50, 30, 30);
_activityView.StartAnimating ();
AddSubview (_activityView);
}
public void Hide ()
{
DismissWithClickedButtonIndex (0, true);
}
}
Any pointers would be gratefully received.
EDIT : I'm already setting the root view controller.
window = new UIWindow (UIScreen.MainScreen.Bounds);
window.RootViewController = tabController;
Full appDelegate code :
public override bool FinishedLaunching (UIApplication app, NSDictionary options)
{
// create a new window instance based on the screen size
window = new UIWindow (UIScreen.MainScreen.Bounds);
tabController = new UITabBarController();
jobsNavigationController = new UINavigationController(new JobsController());
jobsNavigationController.NavigationBar.BarStyle = UIBarStyle.Black;
jobsNavigationController.TabBarItem.Image = UIImage.FromFile("Images/briefcase.png");
jobsNavigationController.TabBarItem.Title = "Current Positions";
myAccountNavigationController = new UINavigationController(new LoginDialogViewController());
myAccountNavigationController.NavigationBar.BarStyle = UIBarStyle.Black;
myAccountNavigationController.TabBarItem.Image = UIImage.FromFile("images/man.png");
myAccountNavigationController.TabBarItem.Title = "My Account";
tabController.SetViewControllers(new UIViewController[] { jobsNavigationController,myAccountNavigationController,new SettingsDialogViewController()},false);
window.RootViewController = tabController;
// make the window visible
window.MakeKeyAndVisible ();
return true;
}
To avoid this warning (in iOS5) and keep iOS 4.x compatibility you can do the following inside your FinishedLaunching method:
if (UIDevice.CurrentDevice.CheckSystemVersion (5, 0))
window.RootViewController = navigation;
else
window.AddSubview (navigation.View);
Look here for a more complete sample.
window.AddSubview(tabcontroller.view);
Fixed the issue, odd I don't set the rootviewcontroller anymore.