Android Question Combobox typeface change and adding items

harinder · Jul 2, 2020

Hi..
I was looking to add a string of days as items to a combobox and also change typeface:

B4X:

    Dim cs As CSBuilder
    Dim myFont As Typeface = Typeface.CreateNew(Typeface.LoadFromAssets("myfont.ttf"), Typeface.STYLE_BOLD)
    Dim s() As String =Array  ("-","7","10","14","30","60","90","180","365")
    For i=0 To s.Length -1
       spnrmks.cmbBox.Addall(Array (cs.Initialize.Typeface(myFont).Append(i).PopAll))
    Next

But I am getting error:
java.lang.ClassCastException: java.lang.Object[] cannot be cast to java.lang.String[]

Halp..Thnx

mangojack · Jul 2, 2020

Change to

B4X:

Dim s() As String = Array As String("-","7","10","14","30","60","90","180","365")

Strangely, compiling without error , then removing "As String" it did not error again in subsequent compiles (debug mode)

DonManfred · Jul 2, 2020

harinder said:
For i=0 To s.Length -1 spnrmks.cmbBox.Addall(Array (cs.Initialize.Typeface(myFont).Append(i).PopAll)) Next

this will add i, the loop variable.

Additional: If you want to use addall you need to create a list with all items first. then add the list with addall.

Shouldn´t it be

B4X:

For i=0 To s.Length -1
   spnrmks.cmbBox.Add(cs.Initialize.Typeface(myFont).Append(s(i)).PopAll)
Next

to add the items in the Loop?

harinder · Jul 2, 2020

Mangojack and Donmanfred...getting same error in both cases

Erel · Jul 2, 2020

1. Why are you accessing the internal cmbbox? You should call SetItems if using B4XComboBox.

2. Please post the full error message from the logs.

harinder · Jul 2, 2020

Adding items to a list and then changing typeface works fine as follows:

B4X:

    Dim s As List
    s.Initialize
    s.AddAll(Array As String ("-","7","10","14","30","60","90","180","365") )
    For Each day As String In s
    spndays.cmbBox.Addall(Array(cs.Initialize.Typeface(myFont).Append(day).PopAll))
    Next

Erel... I can use spndays.setitems(s) to add items to the combobox. But how do I change the typeface in this code line? Thnx

Erel · Jul 2, 2020

Your code is fine. You can also use:

B4X:

Dim Items As List
Items.Initialize
Dim s As List
    s.Initialize
    s.AddAll(Array As String ("-","7","10","14","30","60","90","180","365") )
    For Each day As String In s
     Items.Add(cs.Initialize.Typeface(myFont).Append(day).PopAll)
    Next
 spndays.SetItems(Items)

harinder · Jul 2, 2020

Hi Erel..thank you
Is it possible to change typeface without using the second list(as in your code) and the internal cmbbox(as in my code)?

harinder · Jul 2, 2020

I found a posting by Mahares
https://www.b4x.com/android/forum/threads/b4xcombobox-font-on-b4a.118958/post-744284
stating the same. is there no direct method of changing combobox typeface?
I tried effecting change of combobox font via designer, but could not.
Thnx

Erel · Jul 3, 2020

I'm not sure what you are trying to do. Why does it matter that there is a second list? Does it work?

Android Question Combobox typeface change and adding items

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