public override bool OnOptionsItemSelected(IMenuItem item) { if (item.ItemId == global::Android.Resource.Id.Home) { BackPressed?.Invoke(this, EventArgs.Empty); } return(base.OnOptionsItemSelected(item)); }
private void _navigationManager_BackRequested(object sender, global::Windows.UI.Core.BackRequestedEventArgs e) { var cancelEventArgs = new CancelEventArgs(); BackPressed?.Invoke(sender, cancelEventArgs); if (cancelEventArgs.Cancel) { e.Handled = true; } }
public Game1(BackPressed backPressed) { this.backPressed = backPressed; graphics = new GraphicsDeviceManager(this); Content.RootDirectory = "Content"; graphics.IsFullScreen = true; graphics.PreferredBackBufferWidth = 800; graphics.PreferredBackBufferHeight = 480; graphics.SupportedOrientations = DisplayOrientation.LandscapeLeft | DisplayOrientation.LandscapeRight; }
public override void OnBackPressed() { CancelEventArgs args = new CancelEventArgs(); BackPressed?.Invoke(this, args); if (!args.Cancel) { base.OnBackPressed(); } }
public override void BeforeDispose() { if (BackPressed != null) { //Remove all Events associated to this control (That haven't been unsubscribed !) foreach (Delegate d in BackPressed.GetInvocationList()) { BackPressed -= (EventHandler)d; } } _engine.ScreenSize_Updated -= UpdateLayoutInternal; }
/// <summary> /// Handles the back button press and navigates through the history of the root frame. /// </summary> /// <param name="sender">The source of the event.</param> /// <param name="e">Details about the back button press.</param> void App_BackRequested(object sender, Windows.UI.Core.BackRequestedEventArgs e) { if (!(Window.Current.Content is Frame frame)) { return; } BackPressed?.Invoke(sender, e); if (frame.CanGoBack && !e.Handled) { frame.GoBack(); e.Handled = true; } }
// To support using the Fragment Backstack with back press // Override OnBackPress and have it call this utility method public void OnBackPressWithFragmentManagement() { BackPressed?.Invoke(this, EventArgs.Empty); if (SupportFragmentManager.BackStackEntryCount > 1) { // get the fragment to be popped SupportFragmentManager.PopBackStackImmediate(); var entry = SupportFragmentManager.GetBackStackEntryAt(SupportFragmentManager.BackStackEntryCount - 1); var frag = SupportFragmentManager.FindFragmentByTag(entry.Name); FragmentPoppedOnBack?.Invoke(null, frag); } else { if (SupportFragmentManager.BackStackEntryCount == 1) { SupportFragmentManager.PopBackStackImmediate(); } base.OnBackPressed(); } }
private async void NativeAppWindow_BackPressed(object sender, System.ComponentModel.CancelEventArgs e) { BackPressed?.Invoke(this, e); if (e.Cancel) { return; } var currentContent = ViewModel?.GetFinalContent(); if (currentContent != null) { // We assume going back succeeded bool wentBack = true; var task = ViewModel.HandleUserInteractionAsync("GoBack", delegate { // Sometimes this might happen asynchronously if there was another pending UI action, // but in those cases we would want to cancel the back press anyways. And for the case // of exiting the app, as long as no other pending UI action was occurring, this would // happen synchronously, and return false, and not cancel the back press wentBack = currentContent.GoBack(); }); e.Cancel = wentBack; try { await task; } catch (Exception ex) { ExceptionHelper.ReportHandledException(ex); } } }
private void OnBackPressed() { BackPressed?.Invoke(); }
public void BackButtonPressed() { BackPressed?.Invoke(); }
public override void OnBackPressed() { BackPressed?.Invoke(this, EventArgs.Empty); base.OnBackPressed(); }
private void backButton_Click(object sender, EventArgs e) { BackPressed.Invoke(this, e); }
private void RaiseBackPressed() { BackPressed?.Invoke(this, new EventArgs()); }
private void Activity_BackPressed(object sender, System.ComponentModel.CancelEventArgs e) { BackPressed?.Invoke(this, e); }
public ScoreScreen() { BuildUI(); Back.Click += (sender, e) => BackPressed?.Invoke(sender, e); }
private void Back_Click(object sender, EventArgs e) => BackPressed?.Invoke(this, null);