Android Question customlistview won't take data

[67biscuits]

I am trying to populate a custom list view, I do not understand what's (not) happening

    For x = 0 To clients.Size - 1
        tmp = clients.Get(x)
        tLst = tmp.Get(0)
        itm = tLst.Get(0)
        Log(itm)
        clvClients.AddTextItem(itm,tmp)
        
    Next

but it generates this error:

Error occurred on line: 132 (B4XMainPage)
java.lang.NullPointerException: Attempt to invoke virtual method 'int anywheresoftware.b4a.objects.collections.List.getSize()' on a null object reference
at b4a.example3.customlistview._addtextitem(customlistview.java:78)
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.debug.Debug.delegate(Debug.java:262)
at b4a.example.b4xmainpage._initialize(b4xmainpage.java:368)
at b4a.example.b4xpagesmanager._initialize(b4xpagesmanager.java:162)
at b4a.example.main._activity_create(main.java:417)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
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 b4a.example.main.afterFirstLayout(main.java:106)
at b4a.example.main.access$000(main.java:17)
at b4a.example.main$WaitForLayout.run(main.java:84)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
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)

 

[Johan Schoeman]

What is "tLst"?

 

[LucaMs]

It seems that "clients" is Null.

Check it:

If clients = Null Then
   Log("Null")
End If

 

[DonManfred]

Best way to get help is always to provide a small project showing the issue.