B4J Question Adding node to scrollpane

[Big JR]

How do I programatically add a button to a scrollpane rather than to the rootpane? I've dragged a scrollpane onto the layout, given it an id of sp1. I can use addnode to add a button to the main anchorpane but don't know how add a node to the scrollpane instead.

 

[Erel]

You should just call ScrollPane1.AddNode(...)

You will need to change the variable type to Pane as ScrollPane will not be recognized.

 

[Big JR]

You should just call ScrollPane1.AddNode(...)

You will need to change the variable type to Pane as ScrollPane will not be recognized.

I'm getting errors.

In process globals I have:

Dim Scrollpane1 As Pane


In the action for a button outside the scrollpane I have:

Dim ThisBtn As Button

ThisBtn.Initialize("ThisBtn")

ThisBtn.Tag = "2"

ThisBtn.Text = "Play #1"

Scrollpane1.AddNode(ThisBtn, 10, 10, 60, 40)

 

[Erel]

Can you upload your project (File - Export as zip)?

 

[Big JR]

Can you upload your project (File - Export as zip)?

Hi Erel,
Project zip is attached.

 

[Erel]

Thank you. For now it is not possible to use ScrollPane. It will be supported in the next update. Note that the items should be added to the internal AnchorPane (though it will not work).

You can consider using ListView instead. See this tutorial: Customized ListView

 

[mikeeepe]

What version will be able to add to the internal AnchorPane of a ScrollPane?

 

[Erel]

This is an old thread. ScrollPane is already supported.

 

[mikeeepe]

I am trying to add controls to a scrollpane, but there doesn't seem to be an option to add to the innernode. See attached program. I want to add the time spinners to the scroll pane.

Any ideas?

 

[Erel]

See my answer here: https://www.b4x.com/android/forum/threads/adding-a-label-to-a-scrollpane.44436/#content

 

[mikeeepe]

Thanks Erel.

 

[ilan]

See my answer here: https://www.b4x.com/android/forum/threads/adding-a-label-to-a-scrollpane.44436/#content

sorry erel but your answer there is not clear enough (at least for me).

i have created in designer a pane and i would like to add it to the scrollpane but i get an error.

    Dim p As Pane
    p.Initialize("")
    p = leftscrollp.InnerNode
    p.AddNode(menupnl,0,0,leftscrollp.Width,leftscrollp.Height)

Program started.
Error occurred on line: 22 (main).
java.lang.RuntimeException: Object should first be initialized (Node).
at anywheresoftware.b4a.AbsObjectWrapper.getObject(AbsObjectWrapper.java:32)
at b4j.example.main._appstart(main.java:91)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:563)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:224)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:156)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:93)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:82)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:84)
at b4j.example.main.start(main.java:36)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$159(LauncherImpl.java:863)
at com.sun.javafx.application.LauncherImpl$$Lambda$53/2114892413.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$172(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl$$Lambda$46/237061348.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$170(PlatformImpl.java:295)
at com.sun.javafx.application.PlatformImpl$$Lambda$48/1704355536.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(PlatformImpl.java:294)
at com.sun.javafx.application.PlatformImpl$$Lambda$47/1030870354.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(WinApplication.java:101)
at com.sun.glass.ui.win.WinApplication$$Lambda$36/1232367853.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)

what am i doing wrong?

 

[BeneBarros]

sorry erel but your answer there is not clear enough (at least for me).

i have created in designer a pane and i would like to add it to the scrollpane but i get an error.

    Dim p As Pane
    p.Initialize("")
    p = leftscrollp.InnerNode
    p.AddNode(menupnl,0,0,leftscrollp.Width,leftscrollp.Height)

what am i doing wrong?

menupn1.initialize("")

 

[ilan]

menupn1.initialize("")

menupnl is created in designer so no need to intialize it, thank you anyway...

 

[ilan]

such a simple think but cannot find anywhere in the forum a solution...

just want to add a complete pane to the scrollpane and scroll vertical...

 

[ilan]

ok i solved it in a different way, just created a layout with only that pane and i am loading the layout to the scrollpane, but still i would like to know how i can make it without creating a new layout...

 

[Erel]

See this thread: https://www.b4x.com/android/forum/threads/adding-a-label-to-a-scrollpane.44436/#post-358182

 

[ilan]

See this thread: https://www.b4x.com/android/forum/threads/adding-a-label-to-a-scrollpane.44436/#post-358182

I did, but i could not load the pane to the scrollpane...

I too get the error that my onernode is not intialize, and i am creating it in designer.

Then if i intialize the scrollpane i dont get the error but no pane is loaded...

 

[Erel]

The code you posted is wrong. You initialize a pane and then you set the non-existent pane from ScrollPane.InnerNode to the same variable.
You should instead set InnerNode:

ScrollPane.InnerNode = Pane

 

[ilan]

Sorry but you wrote in the link you posted to do it like this.. maybe i understood it wrong

Ok i will try, thank you erel