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db0070 · Sep 28, 2015

I am trying to make a simple text box with up/down attached to it, so if the user presses 'up' the text box increments by one, and if the user presses 'down' it decrements by one.

I understand I could do this using two extra buttons, one controlling up and one controlling down. Is there a simpler way?

jmon · Sep 29, 2015

in the controlFX library there is a control already made for that

edit:

> Link to the project page: http://fxexperience.com/controlsfx/features/

> @Erel has written a library https://www.b4x.com/android/forum/threads/controlsfx-library.50700/ but it does'n't support this control yet. The source is included, so you can try to code it.

Roycefer · Sep 29, 2015

You can use the MouseClicked() event and increment if the left mouse button was clicked and decrement if the right mouse button was clicked.

Daestrum · Oct 1, 2015

You could use the spinner control.

rwblinn · Oct 5, 2015

Example TextField as Spinner Control using a JavaObject - not using ControlsFX.
Reference: https://docs.oracle.com/javase/8/javafx/api/javafx/scene/control/Spinner.html

SpinnerTextField defined as JavaObject:

B4X:

Private joSpinner As JavaObject

B4X:

'Add a SpinnerTextField to the RootPane
Sub AddSpinner
   Dim spMin As Double = 0
   Dim spMax As Double = 10
   Dim spInitialValue As Double = 5
   Dim spAmountToStepBy As Double = 1
   joSpinner.InitializeNewInstance("javafx.scene.control.Spinner", Array(spMin, spMax, spInitialValue, spAmountToStepBy))
   MainForm.RootPane.AddNode(joSpinner, 20, 100, 100, 20)
End Sub

B4X:

'Get the value of the SpinnerTextField
Sub GetSpinnerValue As Double
   Return joSpinner.RunMethodJO("getValueFactory", Null).RunMethod("getValue", Null)
End Sub

B4X:

'Set the value of the SpinnerTextField
Sub SetSpinnerValue(value As Double)
   joSpinner.RunMethodJO("getValueFactory", Null).RunMethod("setValue", Array(value))
End Sub

db0070 · Oct 5, 2015

Thanks for that code, I will try it out later. If I understand this correctly, I will need a second spinner for the down count.

rwblinn · Oct 5, 2015

No need for a second spinner as the spinner handles by default both directions.

Pls find project attached.

db0070 · Oct 6, 2015

I could not use the code as is, as I am targeting Android or iPhone. Anyway, I tried to modify the code using B4A, and it fails at this line

joSpinner.InitializeNewInstance("javafx.scene.control.Spinner", Array(spMin, spMax, spInitialValue, spAmountToStepBy))

I have added the JavaObject library.

Daestrum · Oct 7, 2015

As its for Android and not for B4J, I would look at NumberPicker here http://developer.android.com/reference/android/widget/NumberPicker.html

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