B4J Question Adding node to scrollpane

Big JR · Dec 11, 2013

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 · Dec 11, 2013

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

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

Big JR · Dec 11, 2013

Erel said:
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 · Dec 11, 2013

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

Big JR · Dec 11, 2013

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

Hi Erel,
Project zip is attached.

Erel · Dec 11, 2013

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 · Dec 14, 2014

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

Erel · Dec 14, 2014

This is an old thread. ScrollPane is already supported.

mikeeepe · Dec 15, 2014

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 · Dec 15, 2014

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

mikeeepe · Dec 15, 2014

Thanks Erel.

ilan · Aug 14, 2015

Erel said:
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.

B4X:

    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 · Aug 14, 2015

ilan said:
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.

B4X:

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 · Aug 14, 2015

BeneBarros said:
menupn1.initialize("")

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

ilan · Aug 14, 2015

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 · Aug 14, 2015

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 · Aug 16, 2015

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

ilan · Aug 16, 2015

Erel said:
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 · Aug 16, 2015

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:

B4X:

ScrollPane.InnerNode = Pane

ilan · Aug 16, 2015

~~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

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