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)