Xamarin Forms: Tap and Double Tap










1















I am looking at Xamarin Forms capabilities for handling screen interaction at the highest level possible - ideally 1 set of code for both iOS and Andoid. I created a new XF app (Multiplatform -> App in F#, no XAML) and I added this to the default template:



type App() =
inherit Application()
let stack = StackLayout(VerticalOptions = LayoutOptions.Center)
let label = Label(XAlign = TextAlignment.Center, Text = "Welcome to F# Xamarin.Forms!")

do
let tapRecognizer = new TapGestureRecognizer()
let handleTapEvent (sender:Object) (args:EventArgs) =
label.Text <- "Tapped at " + DateTime.Now.ToString()
()

let tapEventHandler = new EventHandler(handleTapEvent)
tapRecognizer.Tapped.AddHandler(tapEventHandler)
label.GestureRecognizers.Add(tapRecognizer)

let doubleTapRecognizer = new TapGestureRecognizer()
doubleTapRecognizer.NumberOfTapsRequired <- 2
let handleDoubleTapEvent (sender:Object) (args:EventArgs) =
label.Text <- "Double Tapped at " + DateTime.Now.ToString()
()

let doubleTapEventHandler = new EventHandler(handleDoubleTapEvent)
doubleTapRecognizer.Tapped.AddHandler(doubleTapEventHandler)
label.GestureRecognizers.Add(doubleTapRecognizer)

stack.Children.Add(label)
base.MainPage <- ContentPage(Content = stack)


The problem is that the tap still happens as part of the double tap. Is there a way to recognize a tap or a double tap (versus tap and double tap)?



Thanks in advance










share|improve this question






















  • That's a know issue. You can use timer to handle such a situation. Wondering If you can avoid double tap with Long press gesture ! If you wish to use timers please go through this thread forums.xamarin.com/discussion/20173/…

    – Nirmal Subedi
    Nov 14 '18 at 15:38















1















I am looking at Xamarin Forms capabilities for handling screen interaction at the highest level possible - ideally 1 set of code for both iOS and Andoid. I created a new XF app (Multiplatform -> App in F#, no XAML) and I added this to the default template:



type App() =
inherit Application()
let stack = StackLayout(VerticalOptions = LayoutOptions.Center)
let label = Label(XAlign = TextAlignment.Center, Text = "Welcome to F# Xamarin.Forms!")

do
let tapRecognizer = new TapGestureRecognizer()
let handleTapEvent (sender:Object) (args:EventArgs) =
label.Text <- "Tapped at " + DateTime.Now.ToString()
()

let tapEventHandler = new EventHandler(handleTapEvent)
tapRecognizer.Tapped.AddHandler(tapEventHandler)
label.GestureRecognizers.Add(tapRecognizer)

let doubleTapRecognizer = new TapGestureRecognizer()
doubleTapRecognizer.NumberOfTapsRequired <- 2
let handleDoubleTapEvent (sender:Object) (args:EventArgs) =
label.Text <- "Double Tapped at " + DateTime.Now.ToString()
()

let doubleTapEventHandler = new EventHandler(handleDoubleTapEvent)
doubleTapRecognizer.Tapped.AddHandler(doubleTapEventHandler)
label.GestureRecognizers.Add(doubleTapRecognizer)

stack.Children.Add(label)
base.MainPage <- ContentPage(Content = stack)


The problem is that the tap still happens as part of the double tap. Is there a way to recognize a tap or a double tap (versus tap and double tap)?



Thanks in advance










share|improve this question






















  • That's a know issue. You can use timer to handle such a situation. Wondering If you can avoid double tap with Long press gesture ! If you wish to use timers please go through this thread forums.xamarin.com/discussion/20173/…

    – Nirmal Subedi
    Nov 14 '18 at 15:38













1












1








1








I am looking at Xamarin Forms capabilities for handling screen interaction at the highest level possible - ideally 1 set of code for both iOS and Andoid. I created a new XF app (Multiplatform -> App in F#, no XAML) and I added this to the default template:



type App() =
inherit Application()
let stack = StackLayout(VerticalOptions = LayoutOptions.Center)
let label = Label(XAlign = TextAlignment.Center, Text = "Welcome to F# Xamarin.Forms!")

do
let tapRecognizer = new TapGestureRecognizer()
let handleTapEvent (sender:Object) (args:EventArgs) =
label.Text <- "Tapped at " + DateTime.Now.ToString()
()

let tapEventHandler = new EventHandler(handleTapEvent)
tapRecognizer.Tapped.AddHandler(tapEventHandler)
label.GestureRecognizers.Add(tapRecognizer)

let doubleTapRecognizer = new TapGestureRecognizer()
doubleTapRecognizer.NumberOfTapsRequired <- 2
let handleDoubleTapEvent (sender:Object) (args:EventArgs) =
label.Text <- "Double Tapped at " + DateTime.Now.ToString()
()

let doubleTapEventHandler = new EventHandler(handleDoubleTapEvent)
doubleTapRecognizer.Tapped.AddHandler(doubleTapEventHandler)
label.GestureRecognizers.Add(doubleTapRecognizer)

stack.Children.Add(label)
base.MainPage <- ContentPage(Content = stack)


The problem is that the tap still happens as part of the double tap. Is there a way to recognize a tap or a double tap (versus tap and double tap)?



Thanks in advance










share|improve this question














I am looking at Xamarin Forms capabilities for handling screen interaction at the highest level possible - ideally 1 set of code for both iOS and Andoid. I created a new XF app (Multiplatform -> App in F#, no XAML) and I added this to the default template:



type App() =
inherit Application()
let stack = StackLayout(VerticalOptions = LayoutOptions.Center)
let label = Label(XAlign = TextAlignment.Center, Text = "Welcome to F# Xamarin.Forms!")

do
let tapRecognizer = new TapGestureRecognizer()
let handleTapEvent (sender:Object) (args:EventArgs) =
label.Text <- "Tapped at " + DateTime.Now.ToString()
()

let tapEventHandler = new EventHandler(handleTapEvent)
tapRecognizer.Tapped.AddHandler(tapEventHandler)
label.GestureRecognizers.Add(tapRecognizer)

let doubleTapRecognizer = new TapGestureRecognizer()
doubleTapRecognizer.NumberOfTapsRequired <- 2
let handleDoubleTapEvent (sender:Object) (args:EventArgs) =
label.Text <- "Double Tapped at " + DateTime.Now.ToString()
()

let doubleTapEventHandler = new EventHandler(handleDoubleTapEvent)
doubleTapRecognizer.Tapped.AddHandler(doubleTapEventHandler)
label.GestureRecognizers.Add(doubleTapRecognizer)

stack.Children.Add(label)
base.MainPage <- ContentPage(Content = stack)


The problem is that the tap still happens as part of the double tap. Is there a way to recognize a tap or a double tap (versus tap and double tap)?



Thanks in advance







xamarin.forms f#






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asked Nov 13 '18 at 2:41









Jamie DixonJamie Dixon

2,12631634




2,12631634












  • That's a know issue. You can use timer to handle such a situation. Wondering If you can avoid double tap with Long press gesture ! If you wish to use timers please go through this thread forums.xamarin.com/discussion/20173/…

    – Nirmal Subedi
    Nov 14 '18 at 15:38

















  • That's a know issue. You can use timer to handle such a situation. Wondering If you can avoid double tap with Long press gesture ! If you wish to use timers please go through this thread forums.xamarin.com/discussion/20173/…

    – Nirmal Subedi
    Nov 14 '18 at 15:38
















That's a know issue. You can use timer to handle such a situation. Wondering If you can avoid double tap with Long press gesture ! If you wish to use timers please go through this thread forums.xamarin.com/discussion/20173/…

– Nirmal Subedi
Nov 14 '18 at 15:38





That's a know issue. You can use timer to handle such a situation. Wondering If you can avoid double tap with Long press gesture ! If you wish to use timers please go through this thread forums.xamarin.com/discussion/20173/…

– Nirmal Subedi
Nov 14 '18 at 15:38












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