I can't seem to dismiss the keyboard when the user click on a UITextField then clicks directly starts interacting with the UIDatePicker control.
I am using the following to dismiss the keyboard upon a tap:
// The following code will remove the keyboard when it is not editing...
var g = new UITapGestureRecognizer(() => View.EndEditing(true));
View.AddGestureRecognizer(g);
Can you please tell me how I can dismiss the keyboard when the user clicks on the UIDatePicker control to start adjusting the date?
You have to call .ResignFirstResponder() on the ui element. That should dismiss the keyboard.
xamarin recipe example for keyboard dismissing
xamarin documentation explaining ResignFirstResponder
Try this code:
var tap = new UITapGestureRecognizer ();
tap.AddTarget (() => this.View.EndEditing (true));
this.View.AddGestureRecognizer (tap);
tap.CancelsTouchesInView = false;
Related
I am stuck in a weird scenario where I need to programmatically dismiss the active UIAlertView from the other viewcontroller by getting the instance.
Actually, I am working on AutoClose feature (working on System.Timer) where when Timer would be elapsed, I need to perform some operation (performs in View Model) and close the active UIAlertView or UIViewController window and Navigate To HomeView.
I am able to do with UIViewController but I couldn't find any way to dismiss the UIAlertView which is presented from another view controller?
Note - I understand this API is deprecated but for using UIAlertController it would lead to ample code changes, and I don't have time to make them.
I am using below method to accomplish but once the AlertView gets dismissed I am unable to click anywhere on screen.
UIWindow window = UIApplication.SharedApplication.KeyWindow;
UIViewController rootViewController=window.RootViewController;
if(rootViewController.ModalViewController is UIAlertController)
{
rootViewController.ModalViewController.DismissViewController(true,null);
}
Also, may I know how do we see the hierarchy of Views in Xamarin Studio?
Try to use the following code:
UIAlertView alertView = new UIAlertView("Title", "Content",this,"OK");
alertView.Show();
UIActivityIndicatorView indicatorView = new UIActivityIndicatorView();
indicatorView.BackgroundColor = UIColor.Red;
indicatorView.Center = new CGPoint(alertView.Bounds.Size.Width / 2,
alertView.Bounds.Size.Height - 40.0);
indicatorView.StartAnimating();
alertView.InsertSubview(indicatorView,0);
And if when you want to Dissmiss the AlertView(for emample in the following code I dissmiss it after 3 seconds):
NSTimer.CreateScheduledTimer(3, (t) =>
{
alertView.DismissWithClickedButtonIndex(0, true);
});
I have asked the same question in Xamarin Forum and I got my answer from one of the Xamarin Professional which I am sharing here.
Dismiss UIAlertView programmatically in Xamarin.iOS
I hope this may help others.
I've a login modal opened using showModal().
It has no navbar buttons, so ios users cannot close this modal.
Problem: Actually Android users can use hardware back button to close the login modal.
In my login modal I tried to add
BackHandler.addEventListener('hardwareBackPress', function() {
return true;
}
to disallow backbutton on Android, but it simply doesn't works.
I did this because I read what follows on official RN guide:
Android: Detect hardware back button presses, and programmatically invoke the default back button functionality to exit the app if there are no listeners or if none of the listeners return true.
Adding a console.log into this function I see the event fired on 'normal' screens but NOT when I've a modal showed !
What am i doing wrong?
Overriding hardware back button is possible using overrideBackPress property as described here
You can handle the back press in your component:
onNavigatorEvent(event) {
if (event.id === 'backPress') {
//Do your thing
}
}
I have a dialog in MFC application, which is having menu-bar. Now I have created a toolbar in that dialog using the same command ID which is in the menu-bar.
I use to update the menu-item's state and makes it enable/disable as per some check in ON_UPDATE_COMMAND_UI, When I clicks on the menu. But for toolbar I didn't gets these calls to update it's state, If it should be enabled/disabled.
Moreover I didn't have any notification when the test fails and I to disable the item.
Is there some alternative for doing this?
Thanks
call to ON_UPDATE_COMMAND_UI is only coming when I click on the toolbar button.
Use MFC in a dialog can be frustrating.
I suggest you disable the toolbar button directly when changing state to the variable that will enable / disable the menu:
void CtestDlg::OnBnClickedButton_DisableSomeControls()
{
command_menu_1 = !command_menu_1;
m_ToolBar.GetToolBarCtrl().EnableButton(ID_COMMAND_TEST, command_menu_1);
}
is not very elegant, but it works!
NOTE: There are two similar SO questions (1) (2), but neither of them provides an answer.
TL;DR: How can one dismiss the keyboard in a MonoTouch.Dialog by letting the user touch any empty space in the view?
I'm writing an app using MonoTouch.Dialog and a UITabBarController. One of my tabs is "Settings"...
When the user starts typing, the keyboard obstructs the tabbar...
Using MonoTouch.Dialog, the only way to dismiss the keyboard is to go to the last field and press the "return" key. Considering the fact that the user cannot press any tab until the keyboard is gone, I would like a better way to do it. Namely, to dismiss if the user taps anywhere else on the screen.
Without MonoTouch.Dialog, it's a snap: simply override TouchesBegan and call EndEditing. But this doesn't work with MT.D. I've tried subclassing DialogViewController and overriding TouchesBegan there, but it doesn't work. I'm currently at a loss.
Or, I wonder, would I be better off ditching the tabbar so I can use a UINavigationController with a "Back" button on top, which won't be hidden by the keyboard?
I suggest you use a tap gesture recognizer that will not cause interference with the TableView event handlers:
var tap = new UITapGestureRecognizer ();
tap.AddTarget (() => dvc.View.EndEditing (true));
dvc.View.AddGestureRecognizer (tap);
tap.CancelsTouchesInView = false;
You missed my question about it also: Can the keyboard be dismissed by touching outside of the cell in MonoTouch.Dialog?
:-)
This is my #1 feature request for MonoTouch.Dialog.
To answer your question: No. It is not possible. I have searched and asked around and have not found any answers.
I assume because it is just a sectioned (grouped) table and if it wasn't sectioned, there wouldn't be any spot to click. However, that is just my speculation.
I wish that miguel or someone that works on monotouch would answer this and say if it is even possible. Possibly a future enhancement?
I figured out a workaround that satisfies me well enough, so I'm answering my own question.
// I already had this code to set up the dialog view controller.
var bc = new BindingContext (this, settings, "Settings");
var dvc = new DialogViewController (bc.Root, false);
// **** ADD THIS ****
dvc.TableView.DraggingStarted += (sender, e) => {
dvc.View.EndEditing (true);
};
This will dismiss the keyboard whenever the user drags the view a little bit. There's no touch event I could find associated with the tableview, so this is the next best thing. I'd welcome any other ideas. Cheers!
One workaround to use the dragging gesture instead of the tap as proposed (that do not interfere with the table view gestures) is to override MonoTouch.Dialog.DialogViewController.SizingSource (or MonoTouch.Dialog.DialogViewController.Source if you don't want uneven rows) and give it to the DialogViewController. I don't know if it is very clean or safe.
public class CustomTableViewSource : MonoTouch.Dialog.DialogViewController.SizingSource
{
public CustomTableViewSource(MonoTouch.Dialog.DialogViewController dvc) : base(dvc)
{
}
public override void DraggingStarted(UIScrollView scrollView)
{
base.DraggingStarted(scrollView);
if (scrollView != null)
{
scrollView.EndEditing(true);
}
}
}
I have created storyboard using following instructions
http://docs.xamarin.com/ios/tutorials/Introduction_to_iOS_5#Storyboards
It works as expected.
Then I added new button to MonkeyController and new ViewController to storyboard. This is the code I tried to use in button's click event
partial void btnClicked (NSObject sender)
{
UINavigationController ctrl = this.ParentViewController;
var screen = new TableRowViewController();
ctrl.PushViewController(screen, true);
}
It opens TableRowViewController, but it's background is black and it does not show any modifications I made on it on storyboard.
Can you help me with this?
I'm no expert yet, but it has been my experience trying to get it to work properly that if one of the sides of the split-view is black, then there is a segue that is illegal.
Hope that helps...