Android Question again with initializing issues in B4X

[67biscuits]

I Dim a list
I initialized a list
I try to .Set a position and get this

Logger connected to: Cat S62 Pro

Error occurred on line: 222 (B4XMainPage)
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.set(ArrayList.java:453)
at anywheresoftware.b4a.objects.collections.List.Set(List.java:123)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runVoidMethod(Shell.java:777)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:354)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
at anywheresoftware.b4a.objects.EditTextWrapper$1.afterTextChanged(EditTextWrapper.java:83)
at android.widget.TextView.sendAfterTextChanged(TextView.java:10681)
at android.widget.TextView$ChangeWatcher.afterTextChanged(TextView.java:13668)
at android.text.SpannableStringBuilder.sendAfterTextChanged(SpannableStringBuilder.java:1277)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:577)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:507)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:37)
at android.view.inputmethod.BaseInputConnection.replaceText(BaseInputConnection.java:861)
at android.view.inputmethod.BaseInputConnection.commitText(BaseInputConnection.java:197)
at com.android.internal.widget.EditableInputConnection.commitText(EditableInputConnection.java:177)
at com.android.internal.view.IInputConnectionWrapper.executeMessage(IInputConnectionWrapper.java:345)
at com.android.internal.view.IInputConnectionWrapper$MyHandler.handleMessage(IInputConnectionWrapper.java:93)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7701)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:610)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:952)

lines 217 to 226 Inclusive:

Private Sub contactText_TextChanged (Old As String, New As String)


    Dim txt As EditText = Sender

    Dim tx As String = txt.text

    Dim t As String = txt.Tag ' set as an int to represent position in list
    
    cntct.set(t, tx)
    
    Log(cntct)

End Sub

 

[Erel]

1. Very bad title.

2. List.Set replaces an existing item. Based on the error message the list is empty (Size: 0) so your attempt to replace an existing item fails.

If you want to start with a list with default values then do something like:

Dim z(10) As Int
Dim MyList As List = z
MyList.Set(9, 1)

Note that you can't add or remove items from this list as it is backed by the array.

If you do need to add/remove items:

MyList = B4XCollections.CreateList(z)

 

[67biscuits]

I realized what i had done incorrectly after I had posted the question. I went back to fill the lists with fillers. Also realized that that is a good way to reserve spots for expansion down the road.
thanks.

 

[Cableguy]

With point 1, Erel meant that the tittle you have chosen to your post will help nobody having the same or related issues...
You should change it to something mode meaningful, like "Having issue with List returning index 0" for example... something REALY related to the problem, which btw, was NOT an initialisation problem.
Also, since it's solved, mark it as such