// Below should be the override and custom methods which will be explained later in this blog.
// ...
public void SetImageTitleBackButton(string imageBundleName, string buttonTitle, int horizontalOffset)
{
var topVC = this.TopViewController;
// Create the image back button
var backButtonImage = new UIBarButtonItem(
UIImage.FromBundle(imageBundleName),
UIBarButtonItemStyle.Plain,
(sender, args) =>
{
topVC.NavigationController.PopViewController(true);
});
// Create the Text Back Button
var backButtonText = new UIBarButtonItem(
buttonTitle,
UIBarButtonItemStyle.Plain,
(sender, args) =>
{
topVC.NavigationController.PopViewController(true);
});
backButtonText.SetTitlePositionAdjustment(new UIOffset(horizontalOffset, 0), UIBarMetrics.Default);
// Add buttons to the Top Bar
UIBarButtonItem[] buttons = new UIBarButtonItem[2];
buttons[0] = backButtonImage;
buttons[1] = backButtonText;
topVC.NavigationItem.LeftBarButtonItems = buttons;
}
// Sets a Image + Title Back Button
// -------------------------------
void SetImageTitleBackButton(string imageBundleName, string buttonTitle, int horizontalOffset)
{
var topVC = this.TopViewController;
// create the image back button
var backButtonImage = new UIBarButtonItem(
UIImage.FromBundle(imageBundleName), // see https://developer.xamarin.com/guides/ios/application_fundamentals/working_with_images/displaying-an-image/
UIBarButtonItemStyle.Plain,
(sender, args) =>
{
topVC.NavigationController.PopViewController(true); // event when tapped = go back
});
// create the Text Back Button
var backButtonText = new UIBarButtonItem(
buttonTitle,
UIBarButtonItemStyle.Plain,
(sender, args) =>
{
topVC.NavigationController.PopViewController(true); // event when tapped = go back
});
backButtonText.SetTitlePositionAdjustment(new UIOffset(horizontalOffset, 0), UIBarMetrics.Default); //
// Add the buttons to the Top Bar
UIBarButtonItem[] buttons = new UIBarButtonItem[2];
buttons[0] = backButtonImage;
buttons[1] = backButtonText;
// Add the buttons to the Top Bar
topVC.NavigationItem.LeftBarButtonItems = buttons; // we add 2 buttons (notice property name '...ItemS')
}
// Sets a Text only Back button
// -------------------------------
void SetTitleBackButton(string buttonTitle, int horizontalOffset)
{
// create the image back button
var backButtonText = new UIBarButtonItem(
buttonTitle,
UIBarButtonItemStyle.Plain,
(sender, args) =>
{
this.TopViewController.NavigationController.PopViewController(true);
});
backButtonText.SetTitlePositionAdjustment(new UIOffset(horizontalOffset, 0), UIBarMetrics.Default);
this.TopViewController.NavigationItem.LeftBarButtonItem = backButtonText;
}
public static void Apply (UIBarButtonItem.UIBarButtonItemAppearance appearance, string options = null)
{
if (IsModern)
return;
var font = UIFont.FromName (BarButtonFontName, BarButtonFontSize);
appearance.SetBackgroundImage (
ButtonImage.Value,
UIControlState.Normal,
UIBarMetrics.Default);
appearance.SetBackButtonBackgroundImage (
BackButtonImage.Value,
UIControlState.Normal,
UIBarMetrics.Default);
appearance.SetTitlePositionAdjustment (new UIOffset (0, 1), UIBarMetrics.Default);
appearance.SetTitleTextAttributes (new UITextAttributes {
TextColor = BarTextColor,
TextShadowColor = BarButtonTextShadowColor,
TextShadowOffset = BarButtonTextShadowOffset,
Font = font,
}, UIControlState.Normal);
appearance.SetTitleTextAttributes (new UITextAttributes {
TextColor = UIColor.FromWhiteAlpha (0.9f, 1),
TextShadowColor = BarButtonTextShadowColor,
TextShadowOffset = BarButtonTextShadowOffset,
Font = font,
}, UIControlState.Disabled);
appearance.SetTitleTextAttributes (new UITextAttributes {
TextColor = UIColor.White,
TextShadowColor = BarButtonTextShadowColor,
TextShadowOffset = BarButtonTextShadowOffset,
Font = font,
}, UIControlState.Highlighted);
}
/// <summary>
/// Views the did load.
/// </summary>
///
public override void ViewDidLoad ()
{
ECLSUIUtil.TryAction<ECLSPopover> ("ViewDidLoad", () => {
base.ViewDidLoad ();
// default frame size
this.View.Frame = OnGetFrame ();
if (_style == ECLSPopoverStyle.OkCancel) {
_navigationBar = new UINavigationBar (
CGRect.FromLTRB (0, 0, UIApplication.SharedApplication.Delegate.GetWindow ().Frame.Width, 44)
);
_navigationBar.BackgroundColor = UIColor.DarkGray; //UIColor.FromRGB (175,1,83); //magenta
// _navigationBar.TintColor = UIColor.FromRGB (175,1,83); // UIColor.White;
_leftBarButtonItem = new UIBarButtonItem (UIBarButtonSystemItem.Cancel);
_rightBarButtonItem = new UIBarButtonItem (UIBarButtonSystemItem.Done);
_leftBarButtonItem.SetTitlePositionAdjustment (new UIOffset (15f, 0), UIBarMetrics.Default);
_rightBarButtonItem.SetTitlePositionAdjustment (new UIOffset (-15f, 0), UIBarMetrics.Default);
UINavigationItem navItem = new UINavigationItem () {
LeftBarButtonItem = _leftBarButtonItem,
RightBarButtonItem = _rightBarButtonItem,
};
_navigationBar.SetItems (
new UINavigationItem[] { navItem }, false
);
_navigationBar.ClipsToBounds = false;
_buttonItemHandler = new ECLSPopoverButtonItemHandler (
navItem.LeftBarButtonItem, navItem.RightBarButtonItem
);
_buttonItemHandler.NotifyComplete = this.NotifyComplete;
this.View.AddSubview (_navigationBar);
this.View.AddSubview (
new UIView (CGRect.FromLTRB (0, _navigationBar.Frame.Height, this.View.Bounds.Right, this.View.Bounds.Bottom)) {
BackgroundColor = UIColor.FromRGB (240, 232, 236),
Alpha = .95f
}
);
/*this.View.AddSubview(
new UIImageView(UIImage.FromFile(@"Images/Background_Calculating_Full.png").StretchableImage(0, 5)) {
Frame = RectangleF.FromLTRB(0, _navigationBar.Frame.Height, this.View.Bounds.Right, this.View.Bounds.Bottom)
}
); */
} else if (_style == ECLSPopoverStyle.Activity) {
/*this.View.AddSubview(
new UIImageView(UIImage.FromFile(@"Images/Background_Calculating_Full.png").StretchableImage(0, 5)) {
Frame = this.View.Bounds
}
);
*/
this.View.AddSubview (new UIView (this.View.Bounds) {
BackgroundColor = UIColor.Black,
//BackgroundColor = UIColor.FromRGB (175,1,83), //magenta
Alpha = .75f
});
_activityLabel = new UILabel () {
Frame = CGRect.FromLTRB (this.View.Frame.Left, (_frameHeight / 2), this.View.Frame.Width, (_frameHeight / 2) + 31 /* adjusted below */),
TextAlignment = UITextAlignment.Center,
Lines = 3,
LineBreakMode = UILineBreakMode.WordWrap,
BackgroundColor = UIColor.Clear,
Opaque = true,
TextColor = UIColor.White,
Text = this.Title,
ShadowColor = UIColor.Black,
ShadowOffset = new CGSize (0f, -1.0f),
Font = ECLSUIUtil.HelveticaNeueBold (24.0f)
};
CGSize labelSize = ECLSUIUtil.LabelRequiredSize (_activityLabel, this.Title);
_activityLabel.Frame = CGRect.FromLTRB (
_activityLabel.Frame.Left, _activityLabel.Frame.Top, _activityLabel.Frame.Right, _activityLabel.Frame.Top + labelSize.Height
);
this.View.AddSubview (_activityLabel);
_activityIndicator = new UIActivityIndicatorView () {
HidesWhenStopped = true,
Center = new CGPoint (
this.View.Frame.Width / 2, (_frameHeight / 2) - 20
)
};
this.View.AddSubview (_activityIndicator);
_activityIndicator.StartAnimating ();
} else if (_style == ECLSPopoverStyle.Plain) {
_activityLabel = new UILabel () {
Frame = CGRect.FromLTRB (this.View.Frame.Left, (_frameHeight / 2), this.View.Frame.Width, (_frameHeight / 2) + 31 /* adjusted below */),
TextAlignment = UITextAlignment.Center,
Lines = 3,
LineBreakMode = UILineBreakMode.WordWrap,
BackgroundColor = UIColor.Clear,
Opaque = true,
TextColor = UIColor.White,
Text = this.Title,
ShadowColor = UIColor.Black,
ShadowOffset = new CGSize (0f, -1.0f),
Font = ECLSUIUtil.HelveticaNeueBold (18.0f)
};
CGSize labelSize = ECLSUIUtil.LabelRequiredSize (_activityLabel, this.Title);
_activityLabel.Frame = CGRect.FromLTRB (
_activityLabel.Frame.Left, _activityLabel.Frame.Top, _activityLabel.Frame.Right, _activityLabel.Frame.Top + labelSize.Height
);
this.View.AddSubview (_activityLabel);
_activityIndicator = new UIActivityIndicatorView () {
HidesWhenStopped = true,
Center = new CGPoint (
this.View.Frame.Width / 2, (_frameHeight / 2) - 20
)
};
this.View.AddSubview (_activityIndicator);
_activityIndicator.StartAnimating ();
}
});
}
