private void Initialize()
{
lunchDuration = NBLunchDuration.Medium;
hasRoundedCorners = true;
UserInteractionEnabled = false;
BackgroundColor = kDefaultBackground;
}
/**
* Displays a snackbar (new in material design) at the bottom of the screen
* - parameter text: The message to be displayed
* - parameter duration: The duration of the snackbar
*/
public static void Show(string text, NBLunchDuration duration, UIView windowView = null)
{
if (windowView == null)
{
windowView = UIApplication.SharedApplication.GetTopView();
}
NBMaterialSnackbar toast = NBMaterialSnackbar.CreateSingleWithTextAndDuration(windowView, text: text,
duration: duration);
toast.Show();
}
/**
* Displays a classic toast message with a user defined text and duration
* - parameter windowView: The window which the toast is to be attached
* - parameter text: The message to be displayed
* - parameter duration: The duration of the toast
*/
public static void Show(string text, NBLunchDuration duration, ToastStyle style, UIView windowView = null)
{
if (style == null)
{
throw new ArgumentNullException(nameof(style));
}
if (windowView == null)
{
windowView = UIApplication.SharedApplication.GetTopView();
}
var toast = CreateWithTextAndConstraints(windowView, text, duration, style);
toast.Show();
}
private static NBMaterialSnackbar CreateSingleWithTextAndDuration(UIView windowView, string text, NBLunchDuration duration)
{
NBMaterialSnackbar snack = new NBMaterialSnackbar();
snack.lunchDuration = duration;
snack.TranslatesAutoresizingMaskIntoConstraints = false;
snack.currentHeight = snack.kMinHeight;
snack.textLabel = new UILabel();
snack.textLabel.BackgroundColor = UIColor.Clear;
snack.textLabel.TextAlignment = UITextAlignment.Left;
snack.textLabel.Font = snack.kFontRoboto;
snack.textLabel.TextColor = snack.kFontColor;
snack.textLabel.Lines = 1;
snack.textLabel.Alpha = 0.0f;
snack.textLabel.TranslatesAutoresizingMaskIntoConstraints = false;
snack.textLabel.Text = text;
snack.AddSubview(snack.textLabel);
windowView.AddSubview(snack);
snack.constraintViews.SetValueForKey(snack.textLabel, new NSString("textLabel"));
snack.constraintViews.SetValueForKey(snack, new NSString("snack"));
snack.constraintMetrics.SetValueForKey(new NSNumber(snack.kVerticalSinglePadding), new NSString("vPad"));
snack.constraintMetrics.SetValueForKey(new NSNumber(snack.kHorizontalPadding), new NSString("hPad"));
snack.constraintMetrics.SetValueForKey(new NSNumber(snack.kMinHeight), new NSString("minHeight"));
snack.AddConstraints(NSLayoutConstraint.FromVisualFormat("V:|-vPad-[textLabel]-vPad-|",
NSLayoutFormatOptions.DirectionLeadingToTrailing, metrics: snack.constraintMetrics,
views: snack.constraintViews));
snack.AddConstraints(NSLayoutConstraint.FromVisualFormat("H:|-hPad-[textLabel]-hPad-|", NSLayoutFormatOptions.DirectionLeadingToTrailing, metrics: snack.constraintMetrics, views: snack.constraintViews));
windowView.AddConstraints(NSLayoutConstraint.FromVisualFormat("V:[snack(==minHeight)]", NSLayoutFormatOptions.DirectionLeadingToTrailing, metrics: snack.constraintMetrics, views: snack.constraintViews));
windowView.AddConstraints(NSLayoutConstraint.FromVisualFormat("H:|[snack]|", NSLayoutFormatOptions.DirectionLeadingToTrailing, metrics: snack.constraintMetrics, views: snack.constraintViews));
snack.verticalConstraint = NSLayoutConstraint.Create((NSObject)snack, (NSLayoutAttribute)NSLayoutAttribute.Bottom, (NSLayoutRelation)NSLayoutRelation.Equal, (NSObject)windowView, (NSLayoutAttribute)NSLayoutAttribute.Bottom, (nfloat)1.0, constant: snack.currentHeight);
windowView.AddConstraint(snack.verticalConstraint);
return(snack);
}
private static NBMaterialToast CreateWithTextAndConstraints(UIView windowView, string text, NBLunchDuration duration, ToastStyle style)
{
if (style == null)
{
throw new ArgumentNullException(nameof(style));
}
var toast = new NBMaterialToast
{
lunchDuration = duration,
Alpha = 0.0f,
TranslatesAutoresizingMaskIntoConstraints = false,
BackgroundColor = style.BackgroundColor
};
var textLabel = new UILabel
{
BackgroundColor = UIColor.Clear,
TextAlignment = UITextAlignment.Left,
Font = toast.kFontRoboto,
TextColor = style.FontColor,
Lines = 0,
TranslatesAutoresizingMaskIntoConstraints = false,
AccessibilityIdentifier = "NbMaterialToastLabel",
Text = text
};
if (toast.hasRoundedCorners)
{
toast.Layer.MasksToBounds = true;
toast.Layer.CornerRadius = 15.0f;
}
toast.AddSubview(textLabel);
windowView.AddSubview(toast);
toast.constraintViews.SetValueForKey(textLabel, new NSString("textLabel"));
toast.constraintViews.SetValueForKey(toast, new NSString("toast"));
var verticalBottomMargin = toast.kVerticalBottomMargin;
if (UIDevice.CurrentDevice.CheckSystemVersion(11, 0))
{
var insets = UIApplication.SharedApplication.Windows[0].SafeAreaInsets;
if (insets.Bottom > 0)
{
verticalBottomMargin += insets.Bottom;
}
}
toast.constraintMetrics.SetValueForKey(new NSNumber(toast.kVerticalPadding), new NSString("vPad"));
toast.constraintMetrics.SetValueForKey(new NSNumber(toast.kHorizontalPadding), new NSString("hPad"));
toast.constraintMetrics.SetValueForKey(new NSNumber(toast.kMinHeight), new NSString("minHeight"));
toast.constraintMetrics.SetValueForKey(new NSNumber(verticalBottomMargin), new NSString("vMargin"));
toast.constraintMetrics.SetValueForKey(new NSNumber(toast.kHorizontalMargin), new NSString("hMargin"));
toast.AddConstraints(NSLayoutConstraint.FromVisualFormat("V:|-vPad-[textLabel]-vPad-|", NSLayoutFormatOptions.DirectionLeadingToTrailing, metrics: toast.constraintMetrics, views: toast.constraintViews));
toast.AddConstraints(NSLayoutConstraint.FromVisualFormat("H:|-hPad-[textLabel]-hPad-|", NSLayoutFormatOptions.DirectionLeadingToTrailing, metrics: toast.constraintMetrics, views: toast.constraintViews));
toast.SetContentHuggingPriority(750, UILayoutConstraintAxis.Vertical);
toast.SetContentHuggingPriority(750, UILayoutConstraintAxis.Horizontal);
toast.SetContentCompressionResistancePriority(750, UILayoutConstraintAxis.Horizontal);
windowView.AddConstraints(NSLayoutConstraint.FromVisualFormat("V:[toast(>=minHeight)]-vMargin-|",
NSLayoutFormatOptions.DirectionLeadingToTrailing, metrics: toast.constraintMetrics,
views: toast.constraintViews));
windowView.AddConstraints(NSLayoutConstraint.FromVisualFormat("H:|-(>=hMargin)-[toast]-(>=hMargin)-|", NSLayoutFormatOptions.DirectionLeadingToTrailing, metrics: toast.constraintMetrics, views: toast.constraintViews));
windowView.AddConstraint(NSLayoutConstraint.Create(toast, NSLayoutAttribute.CenterX, NSLayoutRelation.Equal,
windowView, NSLayoutAttribute.CenterX, multiplier: 1.0f, constant: 0));
return(toast);
}
