Thread ID: |
Created: |
Updated: |
Platform: |
Replies: |
| 150718 | Jan 17,2020 01:48 AM UTC | Jan 31,2020 01:47 PM UTC | Xamarin.Forms | 12 |
|
Tags: SfPopup |
protected bool DisplayAlert(string title, string text, string acceptButtonText, string declineButtonText = null) { SfPopupLayout popupMessage = new SfPopupLayout { PopupView = { HeaderTitle = title, AcceptButtonText = acceptButtonText, AcceptCommand = new Command(() => _displayAlertAcceptDecline = true ), DeclineButtonText = declineButtonText, DeclineCommand = new Command( () => _displayAlertAcceptDecline = false), AppearanceMode = declineButtonText == null ? AppearanceMode.OneButton : AppearanceMode.TwoButton, AutoSizeMode = AutoSizeMode.Height, WidthRequest = 250, ShowCloseButton = false, ContentTemplate = new DataTemplate(() => { Label label = new Label { HorizontalTextAlignment = TextAlignment.Center, VerticalTextAlignment = TextAlignment.Center, Text = text, Padding = 25 }; return label; }) } }; popupMessage.Show(); return _displayAlertAcceptDecline; }
private static bool _displayAlertAcceptDecline; //true = accept, false = decline
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[Android]
[MainActivity.cs]
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
protected override void OnCreate(Bundle bundle)
{
....
....
SfPopupLayoutRenderer.Init();
LoadApplication(new App(new AndroidInitializer()));
}
}
[iOS]
[AppDelegate]
public partial class AppDelegate : global::Xamarin.Forms.Platform.iOS.FormsApplicationDelegate
{
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
…..
…..
SfPopupLayoutRenderer.Init();
}
}
|
|
[ViewModelBase]
SfPopupLayout popupMessage = new SfPopupLayout
{
PopupView =
{
......
AcceptButtonText = declineButtonText,
AcceptCommand = new Command(() => _displayAlertAcceptDecline = false ),
DeclineButtonText = acceptButtonText,
DeclineCommand = new Command( () => _displayAlertAcceptDecline = true),
.....
.....
}
};
popupMessage.Show();
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private void ShowPopup(object obj) { var returnbool = DisplayAlert("Testing", "Testing accept decline", "Accept", "Decline"); ChangeLabel = returnbool.ToString(); }
|
public class MainPageViewModel : ViewModelBase
{
…. public string ChangeLabel {
get;
set;
}
…. private void ShowPopup(object obj) {
var popupLayout = DisplayAlert("Testing", "Testing accept decline", "Decline", "Accept"); (popupLayout as SfPopupLayout).Closed += MainPageViewModel_Closed;
}
private void MainPageViewModel_Closed(object sender, System.EventArgs e) {
if (_displayAlertAcceptDecline == true)
{
ChangeLabel = "True";
}
else
{
ChangeLabel = "False";
}
}
… }
public class ViewModelBase : BindableBase, IInitialize, INavigationAware, IDestructible {
… public bool _displayAlertAcceptDecline; …. protected SfPopupLayout DisplayAlert(string title, string text, string acceptButtonText, string declineButtonText = null) {
SfPopupLayout popupMessage = new SfPopupLayout
{
…. } return popupMessage; } … } |
|
….
PopupView =
{
….
AcceptCommand = new AcceptButtonCustomCommand(),
DeclineCommand = new DeclineButtonCustomCommand(),
….
}
public class AcceptButtonCustomCommand : ICommand
{
public event EventHandler CanExecuteChanged;
public bool CanExecute(object parameter)
{
return true;
}
public void Execute(object parameter)
{
// You can write your set of codes that needs to be executed
}
}
public class DeclineButtonCustomCommand : ICommand
{
public event EventHandler CanExecuteChanged;
public bool CanExecute(object parameter)
{
return true;
}
public void Execute(object parameter)
{
// You can write your set of codes that needs to be executed
}
} |
private void ShowAlertBox(object obj) { DisplayAlertBox = true; // Here I want to set what was returned from the user pressing Accept/Decline //var response = value returned from DisplayAlertBox // if(response == true) // TextFromPopup = "Accept Pressed" // else // TextFromPopup = "Decline Pressed" }
public Command AcceptCommand => new Command(AcceptPressed); public Command DeclineCommand => new Command(DeclinePressed); private void AcceptPressed(object obj) { //return string 'Accept' } private void DeclinePressed(object obj) { // return string 'Decline' }
<popuplayout:PopupView.ContentTemplate> <DataTemplate> <Label x:Name="messageLabel" Text="New Message" /> DataTemplate> popuplayout:PopupView.ContentTemplate>
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