private void OnKeyboardNotification(NSNotification notification)
{
if (!IsViewLoaded)
{
return;
}
//Check if the keyboard is becoming visible
var visible = notification.Name == UIKeyboard.WillShowNotification;
//Start an animation, using values from the keyboard
UIView.BeginAnimations("AnimateForKeyboard");
UIView.SetAnimationBeginsFromCurrentState(true);
UIView.SetAnimationDuration(UIKeyboard.AnimationDurationFromNotification(notification));
UIView.SetAnimationCurve((UIViewAnimationCurve)UIKeyboard.AnimationCurveFromNotification(notification));
//Pass the notification, calculating keyboard height, etc.
bool landscape = InterfaceOrientation == UIInterfaceOrientation.LandscapeLeft || InterfaceOrientation == UIInterfaceOrientation.LandscapeRight;
var keyboardFrame = visible
? UIKeyboard.FrameEndFromNotification(notification)
: UIKeyboard.FrameBeginFromNotification(notification);
OnKeyboardChanged(visible, landscape ? keyboardFrame.Width : keyboardFrame.Height);
//Commit the animation
UIView.CommitAnimations();
}
private void TecladoArriba(NSNotification notif)
{
var r = UIKeyboard.FrameBeginFromNotification(notif);
var keyboardHeight = r.Height;
if (!blntecladoarriba)
{
CGRect newrect = new CGRect(View.Frame.X,
View.Frame.Y - keyboardHeight,
View.Frame.Width,
View.Frame.Height);
View.Frame = newrect;
blntecladoarriba = true;
}
else
{
var rr = UIKeyboard.FrameEndFromNotification(notif);
var hact = View.Frame.Y * -1;
var hnew = rr.Height;
var dif = hact - hnew;
CGRect newrect = new CGRect(View.Frame.X,
View.Frame.Y + dif,
View.Frame.Width,
View.Frame.Height);
View.Frame = newrect;
}
}
private void OnKeyboardNotification(NSNotification notification)
{
//Check if the keyboard is becoming visible
bool visible = notification.Name == UIKeyboard.WillShowNotification;
//Start an animation, using values from the keyboard
UIView.BeginAnimations("AnimateForKeyboard");
UIView.SetAnimationBeginsFromCurrentState(true);
UIView.SetAnimationDuration(UIKeyboard.AnimationDurationFromNotification(notification));
UIView.SetAnimationCurve((UIViewAnimationCurve)UIKeyboard.AnimationCurveFromNotification(notification));
//Pass the notification, calculating keyboard height, etc.
if (visible)
{
var keyboardFrame = UIKeyboard.FrameEndFromNotification(notification);
OnKeyboardChanged(visible, keyboardFrame.Height);
}
else
{
var keyboardFrame = UIKeyboard.FrameBeginFromNotification(notification);
OnKeyboardChanged(visible, keyboardFrame.Height);
}
//Commit the animation
UIView.CommitAnimations();
}
/// <summary>
/// Handleses the keyboard notifications.
/// </summary>
/// <param name="notification">Notification.</param>
private void HandlesKeyboardNotifications(NSNotification notification)
{
// Check if the keyboard is becoming visible
bool keyboardVisibile = notification.Name == UIKeyboard.WillShowNotification;
// Start an animation, using values from the keyboard
UIView.BeginAnimations("AnimateForKeyboard");
UIView.SetAnimationBeginsFromCurrentState(true);
UIView.SetAnimationDuration(UIKeyboard.AnimationDurationFromNotification(notification) <= 0.0f ? 0.3f : UIKeyboard.AnimationDurationFromNotification(notification));
UIView.SetAnimationCurve((UIViewAnimationCurve)UIKeyboard.AnimationCurveFromNotification(notification));
// Pass the notification, calculating keyboard height, etc.
bool landscape = InterfaceOrientation == UIInterfaceOrientation.LandscapeLeft || InterfaceOrientation == UIInterfaceOrientation.LandscapeRight;
if (keyboardVisibile)
{
var keyboardFrame = UIKeyboard.FrameEndFromNotification(notification);
_keyboardChanged.OnNext(new KeyboardData {
IsVisible = keyboardVisibile, Height = landscape ? keyboardFrame.Width : keyboardFrame.Height
});
}
else
{
var keyboardFrame = UIKeyboard.FrameBeginFromNotification(notification);
_keyboardChanged.OnNext(new KeyboardData {
IsVisible = keyboardVisibile, Height = landscape ? keyboardFrame.Width : keyboardFrame.Height
});
}
// Commit the animation
UIView.CommitAnimations();
}
private void TecladoArriba(NSNotification notif)
{
if (txtDescripcionobra.IsFirstResponder)
{
var r = UIKeyboard.FrameBeginFromNotification(notif);
var keyboardHeight = r.Height;
if (!blntecladoarriba)
{
var desface = (View.Frame.Y - keyboardHeight) + ajuste;
CGRect newrect = new CGRect(View.Frame.X,
desface,
View.Frame.Width,
View.Frame.Height);
View.Frame = newrect;
blntecladoarriba = true;
}
else
{
var rr = UIKeyboard.FrameEndFromNotification(notif);
var hact = View.Frame.Y * -1;
var hnew = rr.Height;
var dif = hact - hnew;
var desface = (View.Frame.Y + dif) + ajuste;
CGRect newrect = new CGRect(View.Frame.X,
desface,
View.Frame.Width,
View.Frame.Height);
View.Frame = newrect;
}
}
}
private void KeyBoardUpNotification(NSNotification notification)
{
// get the keyboard size
var r = UIKeyboard.FrameBeginFromNotification(notification);
// RectangleF r = UIKeyboard.BoundsFromNotification(notification);
// Find what opened the keyboard
//foreach (UIView view in this.View.Subviews)
//{
// if (view.IsFirstResponder)
// activeview = view;
//}
// Bottom of the controller = initial position + height + offset
//bottom = (((float)((float)(this.View.Frame.Y) + this.View.Frame.Height)));
bottom = ((float)(this.View.Frame.Height) + offset);
// Calculate how far we need to scroll
scroll_amount = ((float)(r.Height - (View.Frame.Size.Height - bottom)));
// Perform the scrolling
if (scroll_amount > 0)
{
moveViewUp = true;
ScrollTheView(moveViewUp);
}
else
{
moveViewUp = false;
}
}
private void OnKeyboardNotification(NSNotification notification)
{
if (!IsViewLoaded)
return;
var visible = notification.Name == UIKeyboard.WillShowNotification;
UIView.BeginAnimations("AnimateForKeyboard");
UIView.SetAnimationBeginsFromCurrentState(true);
UIView.SetAnimationDuration(UIKeyboard.AnimationDurationFromNotification(notification));
UIView.SetAnimationCurve((UIViewAnimationCurve)UIKeyboard.AnimationCurveFromNotification(notification));
var landscape = InterfaceOrientation == UIInterfaceOrientation.LandscapeLeft || InterfaceOrientation == UIInterfaceOrientation.LandscapeRight;
if (visible)
{
var keyboardFrame = UIKeyboard.FrameEndFromNotification(notification);
OnKeyboardChanged(visible, landscape ? keyboardFrame.Width : keyboardFrame.Height);
}
else
{
var keyboardFrame = UIKeyboard.FrameBeginFromNotification(notification);
OnKeyboardChanged(visible, landscape ? keyboardFrame.Width : keyboardFrame.Height);
}
UIView.CommitAnimations();
}
protected virtual void KeyboardWillShowNotification(NSNotification notification)
{
UITextField activeView = (UITextField)this.tblView.FindFirstResponder();
if ((activeView == null))
{
return;
}
var keyboardHeight = UIKeyboard.FrameBeginFromNotification(notification).Height + 30;
//var keyboardHeight = 260;
UIEdgeInsets contentInsets = new UIEdgeInsets(64.0f, 0.0f, keyboardHeight, 0.0f);
tblView.ContentInset = contentInsets;
tblView.ScrollIndicatorInsets = contentInsets;
isKeyboardOpen = true;
CGRect Frame = new CGRect(activeView.Frame.X, activeView.Frame.Y + 50, activeView.Frame.Size.Width, activeView.Frame.Size.Height);
// Make sure the tapped location is visible.
this.tblView.ScrollRectToVisible(Frame, true);
}
private void KeyBoardUpNotification(NSNotification notification)
{
// get the keyboard size
var r = (CGRect)UIKeyboard.FrameBeginFromNotification((NSNotification)notification);
// Find what opened the keyboard
foreach (UIView view in this.View.Subviews)
{
if (view.IsFirstResponder)
{
activeview = view;
}
}
// Bottom of the controller = initial position + height + offset
bottom = ((float)activeview.Frame.Y + (float)activeview.Frame.Height + Offset);
// Calculate how far we need to scroll
scrollamount = ((float)r.Height - ((float)View.Frame.Size.Height - bottom));
// Perform the scrolling
if (scrollamount > 0)
{
moveViewUp = true;
ScrollTheView(moveViewUp);
}
else
{
moveViewUp = false;
}
}
private void KeyboardOpened(NSNotification notification)
{
System.Console.WriteLine("Keyboard Opened");
UIView activeView = KeyboardGetActiveView();
if (activeView == null)
{
return;
}
var keyboardFrame = UIKeyboard.FrameBeginFromNotification(notification);
var contentInsets = new UIEdgeInsets(0.0f, 0.0f, keyboardFrame.Height, 0.0f);
newTimesheetScrollView.ContentInset = contentInsets;
newTimesheetScrollView.ScrollIndicatorInsets = contentInsets;
// Position of the active field relative inside the scroll view
RectangleF relativeFrame = activeView.Superview.ConvertRectToView(activeView.Frame, newTimesheetScrollView);
var spaceAboveKeyboard = newTimesheetScrollView.Frame.Height - keyboardFrame.Height;
// Move the active field to the center of the available space
var offset = relativeFrame.Y - (spaceAboveKeyboard - activeView.Frame.Height) / 2;
newTimesheetScrollView.ContentOffset = new PointF(0, offset);
}
public static nfloat ScrollOnHiddenUiElement(UIView view
, float bottom
, NSNotification notification
, UIInterfaceOrientation interfaceOrientation)
{
var landscape = interfaceOrientation == UIInterfaceOrientation.LandscapeLeft || interfaceOrientation == UIInterfaceOrientation.LandscapeRight;
var viewHeight = (landscape ? view.Frame.Width : view.Frame.Height);
var spaceFromNavbarToTopKeyboard = viewHeight - UIKeyboard.FrameBeginFromNotification(notification).Height;
return(spaceFromNavbarToTopKeyboard - bottom - 30); // 30 is extra offset
}
private void OnKeyboardNotification(NSNotification notification)
{
var visible = notification.Name == UIKeyboard.WillShowNotification;
var keyboardFrame = visible
? UIKeyboard.FrameEndFromNotification(notification)
: UIKeyboard.FrameBeginFromNotification(notification);
if (KeyboardChanged != null)
{
KeyboardChanged(this, new KeyboardHelperEventArgs(visible, (float)keyboardFrame.Height));
}
}
private void TecladoAbajo(NSNotification notif)
{
var r = UIKeyboard.FrameBeginFromNotification(notif);
var keyboardHeight = r.Height;
CGRect newrect = new CGRect(View.Frame.X,
View.Frame.Y + keyboardHeight,
View.Frame.Width,
View.Frame.Height);
View.Frame = newrect;
blntecladoarriba = false;
}
private void TecladoAbajo(NSNotification notif)
{
var r = UIKeyboard.FrameBeginFromNotification(notif);
var keyboardHeight = r.Height;
CGRect newrect = new CGRect(viewBarraChat.Frame.X,
viewBarraChat.Frame.Y + keyboardHeight,
viewBarraChat.Frame.Width,
viewBarraChat.Frame.Height);
viewBarraChat.Frame = newrect;
blnTecladoArriba = false;
heightact = 0;
}
void OnKeyBoardEnabled(NSNotification notification)
{
if (!IsViewLoaded)
{
return;
}
var pageBounds = Element.Bounds;
double yPosition = UIKeyboard.FrameBeginFromNotification(notification).Y - UIKeyboard.FrameEndFromNotification(notification).Y;
var propertiesViewBounds = new Rectangle(Element.PropertiesView.X, Element.PropertiesView.Y - yPosition, Element.PropertiesView.Width, Element.PropertiesView.Height);
Element.PropertiesView.Layout(propertiesViewBounds);
}
private void OnKeyboardNotification(NSNotification notification)
{
NSNumber duration = (NSNumber)notification.UserInfo[UIKeyboard.AnimationDurationUserInfoKey];
int animationDuration = (int)(duration.FloatValue * 1000);
var visible = notification.Name == UIKeyboard.WillShowNotification;
var keyboardFrame = visible
? UIKeyboard.FrameEndFromNotification(notification)
: UIKeyboard.FrameBeginFromNotification(notification);
KeyboardVisibilityChanged?.Invoke(this, new KeyboardVisibilityEventArgs(visible, (float)keyboardFrame.Height, animationDuration));
}
private void OnKeyboardHide(NSNotification notification)
{
if (!IsViewLoaded)
{
return;
}
var keyboardFrame = UIKeyboard.FrameBeginFromNotification(notification);
if (_pageWasShiftedUp)
{
ShiftPageDown(keyboardFrame.Height, _activeViewBottom);
}
}
void OnKeyboardNotification(NSNotification notification)
{
if (!IsViewLoaded)
{
return;
}
var frameBegin = UIKeyboard.FrameBeginFromNotification(notification);
var frameEnd = UIKeyboard.FrameEndFromNotification(notification);
var bounds = Element.Bounds;
var newBounds = new Rectangle(bounds.Left, bounds.Top, bounds.Width, bounds.Height - frameBegin.Top + frameEnd.Top);
Element.Layout(newBounds);
}
void OnKeyboardNotification(NSNotification notification)
{
if (!IsViewLoaded)
{
return;
}
var frameBegin = UIKeyboard.FrameBeginFromNotification(notification);
var frameEnd = UIKeyboard.FrameEndFromNotification(notification);
var bounds = Element.Bounds;
var newBounds = new Xamarin.Forms.Rectangle(bounds.Left, bounds.Top, bounds.Width, bounds.Height - frameBegin.Top + frameEnd.Top);
Element.Layout(newBounds);
this.replaceKeyboardInputAccessoryView();
}
private void OnKeyboardNotification(NSNotification notification)
{
var visible = notification.Name == UIKeyboard.WillShowNotification;
var keyboardFrame = visible
? UIKeyboard.FrameEndFromNotification(notification)
: UIKeyboard.FrameBeginFromNotification(notification);
if (visible)
{
this.SetContentOffset(new CGPoint(this.Frame.Left, (this.Frame.Height - keyboardFrame.Height) / 2), false);
}
else
{
this.SetContentOffset(new CGPoint(this.Frame.Left, this.Frame.Top), false);
}
}
public override void ViewWillAppear(bool animated)
{
base.ViewWillAppear(animated);
_show = UIKeyboard.Notifications.ObserveWillShow((sender, e) => {
var r = UIKeyboard.FrameBeginFromNotification(e.Notification);
_scrollAmount = (float)r.Height;
Scroll(sender, e, true);
});
_hide = UIKeyboard.Notifications.ObserveWillHide((sender, e) =>
{
Scroll(sender, e, false);
_scrollAmount = 0;
});
View.AutoresizingMask = UIViewAutoresizing.FlexibleHeight | UIViewAutoresizing.FlexibleWidth;
}
void OnHideNotification(NSNotification notification)
{
if (!IsViewLoaded)
{
return;
}
MainTabbedPage.theModelEntryPage.KeyboardIsDown();
var frameBegin = UIKeyboard.FrameBeginFromNotification(notification);
var frameEnd = UIKeyboard.FrameEndFromNotification(notification);
var bounds = Element.Bounds;
// var cover = 2 * MainTabbedPage.buttonHeightRequest + 20; // Height of the two bottom bars plus some random spacing
var newBounds = new Rectangle(bounds.Left, bounds.Top, bounds.Width,
bounds.Height - frameBegin.Top + frameEnd.Top
// - cover // This causes random loss of the bottom toolbar
);
Element.Layout(newBounds);
}
void keyWillChange(NSNotification notification)
{
if (notification.Name == UIKeyboard.WillShowNotification)
{
var keyboard = UIKeyboard.FrameBeginFromNotification(notification);
CGRect frame = View.Frame;
frame.Y = -keyboard.Height;
View.Frame = frame;
}
if (notification.Name == UIKeyboard.WillHideNotification)
{
CGRect frame = View.Frame;
frame.Y = 0;
View.Frame = frame;
}
}
void OnKeyboardNotification(NSNotification notification)
{
if (!IsViewLoaded)
{
return;
}
var frameBegin = UIKeyboard.FrameBeginFromNotification(notification);
var frameEnd = UIKeyboard.FrameEndFromNotification(notification);
var page = Element as ContentPage;
if (page != null && !(page.Content is ScrollView))
{
var padding = page.Padding;
page.Padding = new Thickness(padding.Left, padding.Top, padding.Right, padding.Bottom + frameBegin.Top - frameEnd.Top);
}
}
private void Keyboard_DidShow(NSNotification notification)
{
var keyboardSize = UIKeyboard.FrameBeginFromNotification(notification).Size;
if (InterfaceOrientation == UIInterfaceOrientation.LandscapeLeft ||
InterfaceOrientation == UIInterfaceOrientation.LandscapeRight)
{
keyboardSize.Width = Math.Max(keyboardSize.Height, keyboardSize.Width);
keyboardSize.Height = Math.Min(keyboardSize.Height, keyboardSize.Width);
}
var view = (KeyboardInputView)View;
var contentInsets = new UIEdgeInsets(0f, 0f, keyboardSize.Height, 0f);
view.ContentInset = contentInsets;
view.ScrollIndicatorInsets = contentInsets;
view.ScrollActiveFieldToVisible();
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
// style the text view to look like a text field - why the hell are they different?
TextView.Layer.BorderColor = UIColor.Gray.ColorWithAlpha(0.5f).CGColor;
TextView.Layer.BorderWidth = 2;
TextView.Layer.CornerRadius = 5;
TextView.ClipsToBounds = true;
TaskDescriptionLabel.Text = thisTask.Description;
_notification = UIKeyboard.Notifications.ObserveWillShow((s, e) =>
{
_animationDuration = e.AnimationDuration;
_animationCurve = e.AnimationCurve;
CGRect r = UIKeyboard.FrameBeginFromNotification(e.Notification);
_scrollAmount = r.Height;
ScrollTheView(true);
});
if (!string.IsNullOrWhiteSpace(thisTask.CompletionData?.JsonData))
{
TextView.Text = thisTask.CompletionData.JsonData;
}
else
{
// Bootstrap for placeholder text. FML
TextView.Delegate = new TextViewPlaceholderDelegate(TextView, placeholderText);
}
UIBarButtonItem customButton = new UIBarButtonItem(
UIImage.FromBundle("TickIcon"),
UIBarButtonItemStyle.Plain,
(s, e) => {
ReturnText();
}
);
NavigationItem.RightBarButtonItem = customButton;
}
private void KeyBoardUpNotification(NSNotification notification)
{
var r = UIKeyboard.FrameBeginFromNotification(notification);
bottom = ((float)(this.View.Frame.Height) + offset);
// Calculate how far we need to scroll
scroll_amount = ((float)(r.Height - (View.Frame.Size.Height - bottom)));
// Perform the scrolling
if (scroll_amount > 0)
{
moveViewUp = true;
ScrollTheView(moveViewUp);
}
else
{
moveViewUp = false;
}
}
private void TecladoArriba(NSNotification notif)
{
var r = UIKeyboard.FrameBeginFromNotification(notif);
var keyboardHeight = r.Height;
if (!blnTecladoArriba)
{
CGRect newrect = new CGRect(viewBarraChat.Frame.X,
viewBarraChat.Frame.Y - keyboardHeight,
viewBarraChat.Frame.Width,
viewBarraChat.Frame.Height);
viewBarraChat.Frame = newrect;
blnTecladoArriba = true;
heightact = keyboardHeight;
}
else
{
var rr = UIKeyboard.FrameEndFromNotification(notif);
var hact = heightact;
var hnew = rr.Height;
var dif = hact - hnew;
Console.WriteLine("hact " + hact.ToString());
Console.WriteLine("hnew " + hnew.ToString());
Console.WriteLine("dif " + dif.ToString());
CGRect newrect = new CGRect(viewBarraChat.Frame.X,
viewBarraChat.Frame.Y + dif,
viewBarraChat.Frame.Width,
viewBarraChat.Frame.Height);
viewBarraChat.Frame = newrect;
heightact = hnew;
}
}
/// <summary>
/// Called when the keyboard is raised.
/// </summary>
/// <param name="notification">Notification.</param>
private void OnKeyboardUp(NSNotification notification)
{
var keyboardRect = UIKeyboard.FrameBeginFromNotification(notification);
if (!FindActiveView(vc.View))
{
Log.E(this, "Failed to find active view. Ignoring keyboard event");
return;
}
//var viewRect = FindBoundsInViewController(activeView, vc);
//if((keyboardRect.Y - keyboardRect.Height) < (vc.View.Bounds.Bottom - keyboardRect.Height) ){
// return;
//}
//if (vc.View.Bounds.Bottom.Equals(keyboardRect.Y)) {
// if (viewRect.Bottom < (keyboardRect.Y - keyboardRect.Height)) {
// return;
// }
//}
//else if (viewRect.Bottom < keyboardRect.Y) {
// PerformScroll(-totalScrolled);
// return;
//}
//var scrollAmount = viewRect.Bottom - keyboardRect.Height;
//if((totalScrolled + scrollAmount) > keyboardRect.Height){
// scrollAmount = keyboardRect.Height - totalScrolled;
//}
//if (scrollAmount > 0) {
// PerformScroll(scrollAmount);
// scrolled = true;
//}
}
// Places the visible area of the scrollviewer at the top of the driver note.
private void ObserveKeyboardShown(NSNotification notification)
{
var isKeyboardVisible = notification.Name == UIKeyboard.WillShowNotification;
var keyboardFrame = isKeyboardVisible
? UIKeyboard.FrameEndFromNotification(notification)
: UIKeyboard.FrameBeginFromNotification(notification);
var duration = UIKeyboard.AnimationDurationFromNotification(notification);
UIView.SetAnimationCurve((UIViewAnimationCurve)UIKeyboard.AnimationCurveFromNotification(notification));
AnimateAsync(duration, async() =>
{
// We need to wait until the default animation from iOS stops before ajusting the scrollviewer to the correct location.
await Task.Delay(1000);
var activeView = KeyboardGetActiveView();
if (activeView == null)
{
return;
}
var scrollView = activeView.FindSuperviewOfType(this, typeof(UIScrollView)) as UIScrollView;
if (scrollView == null)
{
return;
}
var contentInsets = new UIEdgeInsets(0.0f, 0.0f, keyboardFrame.Height, 0.0f);
scrollView.ContentInset = contentInsets;
scrollView.ScrollIndicatorInsets = contentInsets;
// Move the active field to the top of the active view area.
var offset = activeView.Frame.Y - ScrollingOffset;
scrollView.ContentOffset = new CoreGraphics.CGPoint(0, offset);
});
}