B4A Library [B4X] [XUI] AS WheelPicker - Spinner - a modern single/multiple choice picker view - based on xCustomListView [Payware]

Hello,
this is a modern wheel picker, like the IOS-PickerView.
WheelPicker/Spinner

This library is not free, because, it cost a lot of time and gray hair to create such views.
Thanks for your understanding. :)

V3.00-Preview
1673369032159.png

B4I-Preview - looks nicer and smoother in real
dffdf.gif

B4I-Preview - the WheelPicker in the use in an app
fddsfdsf.gif
IMG_2299.jpg

B4A-Preview
21-02-06-03-05-39.gif

NEW Seperators with text or without text
IMG_3504.jpg
IMG_3389.jpg

NEW Next- and Previous-Item - scrolls to the next or previous item animated and male rounded corners
ezgif.com-gif-maker.gif

RPReplay_Final1639236126.gif

Based on ASWheelPicker:
B4j: jXUI,jBitmapCreator,jReflection,xCustomListView,XUI Views
B4a: XUi,BitmapCreator,Reflection,xCustomListView,XUI Views
B4i: iXUI,iBitmapCreator,xCustomListView,XUI Views
On B4I you need the GestureRecognizer or download a version without errors down below. No longer needed V1.06+
Examples:
Add 2 Wheels with a list of maps:
Dim tmp_lst As List : tmp_lst.Initialize 'Create and Initialize the list
    'Fill the list with dummy items
    For i = 0 To 50 -1
    'text - the text to display in the wheel
    'value - any value you want to identify the text E.g. a id
    tmp_lst.Add(CreateMap("text":"Test " & i,"value":i))
Next
ASWheelPicker1.AddWheelAdvanced(tmp_lst)'adds the list to the view and adds a wheel
Get the Selected Items:
'gets the item of the first wheel
'use this function when you have added the wheel with AddWheelAdvanced
Dim tmp_m As Map = ASWheelPicker1.GetSelectedItemAdvanced(0)
Log("Text: " & tmp_m.Get("text"))
Log("Value: " & tmp_m.Get("value"))

'use this function when you have added the wheel with AddWheel
Log("Text: " & ASWheelPicker1.GetSelectedItem(0))
ASWheelPicker
Author: Alexander Stolte
Version: 3.01

  • ASWheelPicker
    • Events:
      • BaseResize (Width As Float)
      • ItemChange (Column As Int, ListIndex As Int)
      • ItemSnapped (wheel_index As Int, list_index As Int)
      • WheelReachEnd (wheel_index As Int)
    • Fields:
      • InactiveDuration As Int
      • mBase As B4XView
      • Tag As Object
    • Functions:
      • AddItems (Items As List) As String
        Examples
        Normal Text Item
        <code>Dim tmp_lst As List : tmp_lst.Initialize
        For i = 0 To 50 -1
        tmp_lst.Add("Test " & i)
        Next
        ASWheelPicker1.AddItems(tmp_lst)</code>
        Item Object Example:
        <code> Dim Items As List : Items.Initialize
        For i = 0 To 50 -1
        Dim Item As ASWheelPicker_Item
        Item.Initialize
        Item.Text = "Test " & i
        Item.Value = i
        Items.Add(ASWheelPicker1.CreateASWheelPicker_Item("Test " & i,i))
        Next
        ASWheelPicker1.AddItems(Items)</code>
      • Base_Resize (Width As Double, Height As Double) As String
      • Class_Globals As String
      • CreateASWheelPicker_Item (Text As String, Value As Object) As ASWheelPicker_Item
      • CreateASWheelPicker_ItemTextProperties (TextColor As Int, TextFont As B4XFont, TextAlignment_Vertical As String, TextAlignment_Horizontal As String, BackgroundColor As Int) As ASWheelPicker_ItemTextProperties
      • CreateASWheelPicker_SeperatorProperties (Width As Float, BackgroundColor As Int, TextColor As Int, TextFont As B4XFont, TextAlignment_Horizontal As String, index As Int) As ASWheelPicker_SeperatorProperties
      • DesignerCreateView (Base As Object, Lbl As Label, Props As Map) As String
        Base type must be Object
      • getBase As B4XView
        gets the base view (mBase)
      • getBottomFadePanel As B4XView
      • getEvents As Boolean
      • GetIndex (wheel_index As Int) As Int
        gets the selected index
      • getItemTextProperties As ASWheelPicker_ItemTextProperties
        gets or sets the global Item Text Properties
      • getNumberOfColumns As Int
        the number of wheels you have
      • getNumberOfSeperators As Int
        the number of seperators
      • GetSelectedItem (Column As Int) As ASWheelPicker_Item
        Returns a string with the item text of the selected index of a wheel
        <code>Log("Text: " & ASWheelPicker1.GetSelectedItem(0))</code>
      • getSelectorPanel As B4XView
      • getSeperatorProperties As ASWheelPicker_SeperatorProperties
        gets or sets the global Seperator Properties
      • getTopFadePanel As B4XView
      • Initialize (Callback As Object, EventName As String) As String
      • IsInitialized As Boolean
        Tests whether the object has been initialized.
      • NextItem (wheel_index As Int, animated As Boolean)
        scrolls to the next item, jump to the first item if the next item is out of index
      • PreviousItem (Column As Int, Animated As Boolean)
        scrolls to the previous item, jump to the last item if the previous item is out of index
      • Refresh As String
      • RemoveColumn (Column As Int) As String
        removes a wheel
        <code>ASWheelPicker1.RemoveWheelAt(0)</code>
      • RemoveSeperatorAt (Column As Int) As String
        removes a seperator
        <code>ASWheelPicker1.RemoveSeperatorAt(0)</code>
      • SelectRow (Column As Int, Row As Int, Animated As Boolean)
        scrolls to an item on a wheel
      • setBackgroundColor (clr As Int) As String
        sets the background color
      • setCornerRadius (Radius As Int) As String
        sets the corner radius of the view
      • setEvents (Enabled As Boolean) As String
        Enables or disables the events
        Default: True
      • setFadeColor (clr As Int) As String
      • setFadeEnabled (enable As Boolean) As String
        set it to false to disable the fade effect on top and bottom
      • setHapticFeedback (enabled As Boolean) As String
      • setHapticFeedbackOnSnapIn (Enabled As Boolean) As String
      • SetItems (Column As Int, Items As List) As String
        Examples
        Normal Text Item
        <code>Dim tmp_lst As List : tmp_lst.Initialize
        For i = 0 To 50 -1
        tmp_lst.Add("Test " & i)
        Next
        ASWheelPicker1.SetItems(0,tmp_lst)</code>
        Item Object Example:
        <code> Dim Items As List : Items.Initialize
        For i = 0 To 50 -1
        Dim Item As ASWheelPicker_Item
        Item.Initialize
        Item.Text = "Test " & i
        Item.Value = i
        Items.Add(ASWheelPicker1.CreateASWheelPicker_Item("Test " & i,i))
        Next
        ASWheelPicker1.SetItems(0,Items)</code>
      • setRowHeightSelected (height As Float) As String
        sets the Selected RowHeight default is 30dip - and changes the wheel items height + selector
      • setRowHeightUnSelected (height As Float) As String
        sets the Unselected RowHeight default is 30dip - and changes the wheel items height
      • setSelectionBarColor (clr As Int) As String
      • SetSeperator (Column As Int, Width As Float, Text As String) As String
        wheel_index - after wich wheel do you want to show the seperator - set it to -1 to place it before the first wheel
        width - the width of the seperator
        text - if you want text, then set the text here
      • SetWheelWidth (Column As Int, ColumnWidth As Float) As String
        Sets the width of an wheel
        Only working if you set the Width Mode to Manual
      • Size (wheel_index As Int) As Int
        gets size of a list
    • Properties:
      • BackgroundColor
        sets the background color
      • Base As B4XView [read only]
        gets the base view (mBase)
      • BottomFadePanel As B4XView [read only]
      • CornerRadius
        sets the corner radius of the view
      • Events As Boolean
        Enables or disables the events
        Default: True
      • FadeColor
      • FadeEnabled
        set it to false to disable the fade effect on top and bottom
      • HapticFeedback
      • HapticFeedbackOnSnapIn
      • ItemTextProperties As ASWheelPicker_ItemTextProperties [read only]
        gets or sets the global Item Text Properties
      • NumberOfColumns As Int [read only]
        the number of wheels you have
      • NumberOfSeperators As Int [read only]
        the number of seperators
      • RowHeightSelected
        sets the Selected RowHeight default is 30dip - and changes the wheel items height + selector
      • RowHeightUnSelected
        sets the Unselected RowHeight default is 30dip - and changes the wheel items height
      • SelectionBarColor
      • SelectorPanel As B4XView [read only]
      • SeperatorProperties As ASWheelPicker_SeperatorProperties [read only]
        gets or sets the global Seperator Properties
      • TopFadePanel As B4XView [read only]
  • ASWheelPicker_Item
    • Fields:
      • IsInitialized As Boolean
        Tests whether the object has been initialized.
      • ItemTextProperties As ASWheelPicker_ItemTextProperties
      • Text As String
      • Value As Object
    • Functions:
      • Initialize
        Initializes the fields to their default value.
  • ASWheelPicker_ItemTextProperties
    • Fields:
      • BackgroundColor As Int
      • IsInitialized As Boolean
        Tests whether the object has been initialized.
      • Left As Float
      • TextAlignment_Horizontal As String
      • TextAlignment_Vertical As String
      • TextColor As Int
      • TextFont As B4XFont
      • Width As Float
    • Functions:
      • Initialize
        Initializes the fields to their default value.
  • ASWheelPicker_SeperatorProperties
    • Fields:
      • BackgroundColor As Int
      • index As Int
      • IsInitialized As Boolean
        Tests whether the object has been initialized.
      • TextAlignment_Horizontal As String
      • TextColor As Int
      • TextFont As B4XFont
      • Width As Float
    • Functions:
      • Initialize
        Initializes the fields to their default value.
Changelog
  • 1.00
    • Release
  • 1.01
    • Adds the Type ASWheelPicker_ItemTextProperties - hold the style propterties for the wheel text
      • Adds get ItemTextProperties - change the properties before you add a new wheel
    • Adds set RowHeight - changes the row height of the items and the selector
    • Adds UpdateStyleOfWheel - update the style of a particular wheel - changes the style to the properties of this: ItemTextProperties
    • Adds UpdateStyleOfAllWheels - update the style of all wheels - changes the style to the properties of this: ItemTextProperties
    • Adds RemoveWheelAt - removes a wheel
  • 1.02
    • Adds FadeEnabled - set it to false to disable the fade effect on top and bottom
    • Adds RowHeightSelected - sets the Selected RowHeight default is 30dip - and changes the wheel items height + selector
    • Adds RowHeightUnSelected - sets the Unselected RowHeight default is 30dip - and changes the wheel items height
    • Removed RowHeight - use RowHeightSelected and RowHeightUnSelected
  • 1.03
    • Add get Base - gets the base view (mBase)
    • Add Scroll2Index - scrolls to an item on a wheel
    • Add get Index - gets the selected index
  • 1.04
    • Add Size - gets size of a list
    • the index of a list now starts at 0
  • 1.05
    • Add AddSeperator - adds an seperator after a wheel. IF you want a placeholder before the first wheel, then set the index to -1
      • seperators can display text
      • seperators can be customized
    • Add RemoveSeperatorAt - removes a seperator
  • 2.00
    • Better Handling if you set an invalid wheel_index as parameter to the functions
    • Add get TopFadePanel
    • Add get BottomFadePanel
    • Fade Panels are now above and under the selector panel
    • Add Next - scrolls to the next item, jump to the last item if the next item is out of index
      • ezgif.com-gif-maker.gif
    • Add Previous - scrolls to the previous item, jump to the last item if the previous item is out of index
    • Add set CornerRadius - sets the corner radius of the view
      • Add Designer Property CornerRadius
    • SnapIn Improved - Immediately snaps into place without moving again
    • BugFixes
    • new depency: XUIViews, is needed for the HapticFeedback
  • 2.01
    • Add get NumberOfSeperators - the number of seperators
    • BugFix View Resizing
  • 2.03
    • Add Event BaseResize - Triggers as soon as the width in the view has changed
    • Add Event ItemChange - Triggers when an item reaches the center while scrolling, so you can display the results e.g. in a label instant
    • B4I Item snap is now smooth
  • 2.04 (read more)
    • Complete rework of the wheel sizing
    • Add Designer Property WidthMode - Default: Automatic
      • Automatic - You don't have to worry about anything, the view calculates the right size for all wheels
      • Manual - Set the wheel sizes you need via "SetWheelWidth"
    • Add WheelWidth to ItemTextProperties - This allows you to set the width of a wheel manually, only working if WidthMode = Manual - Default: 0
    • Add SetWheelWidth - Sets the width of an wheel, only working if WidthMode = Manual
    • Add get and set Events - Enables or disables the events
    • Haptic feedback disabled if you call Scroll2Index
    • BugFixes
  • 2.06
    • BugFixes
    • GestureRecognizer is now inside the B4XLib
  • 3.00
    • Complete rewrite of the view
    • Designer properties now have all default values
      • If you add the view by code, you have less to consider
    • The lists now use LazyLoading
    • Breaking Changes on properties and functions
  • 3.01
    • Add GetItem
  • 3.02
    • Add GetSeperator
  • 3.03
    • BugFixes
    • Add AddItemAt
    • Add RemoveItemAt
    • Add GetListView - gets the xCustomListView for a column
  • 3.04 (read more)
    • Add Event CustomDrawItemChange
  • 3.05
    • BugFixes
  • 3.06
    • BugFixes
  • 3.07
    • BugFixes
  • 3.08
    • BugFixes B4I
  • 3.09
    • GestureRecongnizer intern renamings
  • 3.10
    • BugFix - in function GetItem
  • 3.11 (read more)
    • Add Designer Property TextColor
    • Add Designer Property SelectionBarStyle
      • Default: Rounded
  • 3.12
    • Add SelectRow2 - Select a row with the Value, no index needed, just the value
    • BugFixes
  • 3.13
    • If the FadeColor is Transparent, then no fade will be displayed now
  • 3.14
    • BugFixes
  • 3.15 (read more)
    • Add EnabledRow - Disable a specific row. When the user goes on it, he is automatically brought back to an item that is active. Events are not triggered when a row is disabled
    • Add Designer Property DisabledTextColor
  • 3.16
    • Add get and set BorderWidth
    • Add get and set BorderColor
  • 3.17
    • B4A Border BugFix
  • 3.18
    • B4A Border BugFix
  • 3.19
    • Add RefreshCustomDraw - Triggers the CustomDrawEvent
      • Dont forget a Sleep(0) before you call this function
  • 3.20
    • BugFixes
  • 3.21
    • Add Event CustomDrawItem
    • Fade Effect BugFixes
  • 3.22
    • Important B4I BugFix
  • 3.23
    • Add Clear - Clears a column
      • SetItems already clears the list if you set a new list
Have Fun :)
 

Attachments

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  • Backup 1.05 ASWheelPicker.zip
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  • GestureRecognizer.bas
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  • Backup 2.03 ASWheelPicker.zip
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  • 2.06 Backup.zip
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  • Example WheelPicker.zip
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  • ASWheelPicker.zip
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Last edited:

Alexander Stolte

Expert
Licensed User
Longtime User
sorry, it doesn't work
sorry, I can't recreate it in B4A.
The following things could be the solution:
-Check in the library tab in your project if the ASWheelPicker has the version 3.17
-ASWheelPicker1.BorderWidth=3dip add a "dip" to the 3

If that doesn't work, please send me an example project that shows the error. Thanks a lot :)
 

marcick

Well-Known Member
Licensed User
Longtime User
here it is.
(II don't know how the border will look, but also corneradius seems it is missing)
 

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  • test.zip
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Alexander Stolte

Expert
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Longtime User
Update
  • 3.18
    • B4A Border BugFix
here it is.
(II don't know how the border will look, but also corneradius seems it is missing)
Thanks, the problem was the fade panels. Since I find the fade effect ugly, I always have it transparent, so I haven't seen the problem.
 

marcick

Well-Known Member
Licensed User
Longtime User
Now it's ok, thank you. To be honest I had the fading effect without understand well what it is .... I have disabled it now.
It looks now identical to IOS. :)
 

Alexander Stolte

Expert
Licensed User
Longtime User
Update
  • 3.20
    • BugFixes
  • 3.21
    • Add Event CustomDrawItem
    • Fade Effect BugFixes
CustomDrawItem
you can now do something like this:
wz7SGXjrlH6ktttSI4iqEJ47ez7AKaoXMaqc32ByDKBhkvNFOT.jpeg

It's just one column and 2 extra labels
 
Last edited:

Aldo's

Active Member
Licensed User
Great job.
Thanks.
if I wanted to clean a As WheelPicker how do I do it?
 

Alexander Stolte

Expert
Licensed User
Longtime User
Update
  • 3.23
    • Add Clear - Clears a column
      • SetItems already clears the list if you set a new list

Great job.
Thanks :)
if I wanted to clean a As WheelPicker how do I do it?
You can simply use SetItems with a new list, the WheelPicker automatically empties the list beforehand. Or you can use the new "clear" function. Note, however, that the view crashes if the user scrolls an empty list. So if the list remains empty, remove the column instead of just clearing it.
 

Aldo's

Active Member
Licensed User
HI
I would like to change the font of my AS WheelPicker and I wrote this code:
B4X:
Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1
    Root.LoadLayout("MainPage")
    Dim asTmp(3) As String
    asTmp(0)="Ruota intervalli"
    asTmp(1)="Traspositore"
    asTmp(2)="Intonazione voci coro"
    Dim tmp_lst As List : tmp_lst.Initialize
    tmp_lst.AddAll(asTmp)   
    pckMenu.SetItems(0,tmp_lst)
    pckMenu.ItemTextProperties.TextFont=xui.CreateDefaultBoldFont(20)
    pckMenu.Refresh
End Sub

but my font remains the default without changing the size and regular and not bold.
What am I doing wrong?
 

Alexander Stolte

Expert
Licensed User
Longtime User
but my font remains the default without changing the size and regular and not bold.
What am I doing wrong?
If you hover over "ItemTextProperties" property with the mouse, the IDE will show you the comments that I have stored and example code if you have to comply with or observe something special.

In your case, this must be done as follows:
B4X:
Dim ItemTextProperties As ASWheelPicker_ItemTextProperties = ASWheelPicker1.ItemTextProperties
ItemTextProperties.TextFont=xui.CreateDefaultBoldFont(20)
ASWheelPicker1.ItemTextProperties = ItemTextProperties

Alex
 

Aldo's

Active Member
Licensed User
If you hover over "ItemTextProperties" property with the mouse, the IDE will show you the comments that I have stored and example code if you have to comply with or observe something special.

In your case, this must be done as follows:
B4X:
Dim ItemTextProperties As ASWheelPicker_ItemTextProperties = ASWheelPicker1.ItemTextProperties
ItemTextProperties.TextFont=xui.CreateDefaultBoldFont(20)
ASWheelPicker1.ItemTextProperties = ItemTextProperties

Alex
It works perfectly.
Thank you
 

Aldo's

Active Member
Licensed User
Is it possible to create a WheelPicker that puts the first element after the last element in order to create an endless picker?
 

Alexander Stolte

Expert
Licensed User
Longtime User
Is it possible to create a WheelPicker that puts the first element after the last element in order to create an endless picker?
No, sorry.
A solution that I have already seen in a few ios apps is. e.g. Time Picker: simply add the interval 0-23 several times, this creates the illusion for the user that it is "endless". I don't think a user would search for the value "1" more than 20 times.
 

Aldo's

Active Member
Licensed User
No, sorry.
A solution that I have already seen in a few ios apps is. e.g. Time Picker: simply add the interval 0-23 several times, this creates the illusion for the user that it is "endless". I don't think a user would search for the value "1" more than 20 times.
Ok, thanks
 

Alexander Stolte

Expert
Licensed User
Longtime User
The problem is that it would be possible if the user always scrolls the list slowly. But as soon as the user scrolls quickly, unexpected behavior on the part of the list cannot be avoided. I had to struggle with this for ages with the AS_Scheduler and even now it is still not 100% perfect.
 

Aldo's

Active Member
Licensed User
I would like to use MaterialIcons for the separator. I wrote this code, but it doesn't insert any comments.

B4X:
    Dim ItemTextProperties As ASWheelPicker_ItemTextProperties = pckNote.ItemTextProperties
    ItemTextProperties.TextFont=xui.CreateDefaultBoldFont(16)
    pckNote.ItemTextProperties = ItemTextProperties
    Dim tmp_lst As List : tmp_lst.Initialize
    tmp_lst.AddAll(asNote)
    pckNote.SetItems(0,tmp_lst)

    Dim SepTextProp As ASWheelPicker_SeperatorProperties = pckNote.SeperatorProperties
    SepTextProp.TextFont=xui.CreateMaterialIcons(16)
    pckNote.SeperatorProperties = SepTextProp
    pckNote.SetSeperator(0,40dip,Chr(0xe5c8))
    
    pckNote.SetItems(1,tmp_lst)
    pckNote.Refresh

What am I doing wrong?
 

Alexander Stolte

Expert
Licensed User
Longtime User
What am I doing wrong?
You're not doing anything wrong. You can test the whole thing by using a label. Set the font of the label to "MaterialIcon" and then add a text + an icon. You will see that only the initial letter and the icon are visible. Since I am using a label, there is nothing I can do if this is the behavior of the native B4A label.
 
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