Wish RunMethod for every nodes

jmon · Jan 22, 2016

Hi,

I think it would be very convenient to have a .RunMethod method for every node. So we would need to create new variables as JavaObject when running external methods.
Current:

B4X:

Dim l As Label
l.Initialize("")
l.Text = "Blah"
Dim lJo As JavaObject = l
lJo.RunMethod("setRotate", Array(90.0))

Suggested:

B4X:

Dim l As Label
l.Initialize("")
l.Text = "Blah"
l.RunMethod("setRotate", Array(90.0))

Or:

B4X:

Dim l As Label
l.Initialize("")
l.Text = "Blah"
l.asJo.RunMethod("setRotate", Array(90.0))

I currently use the asJo snippet from @Daestrum (https://www.b4x.com/android/forum/threads/javaobjects-the-easy-way.45121/), which is very good, but I found that this new proposition would be a great addition.

Thank you
Jmon.

Erel · Jan 22, 2016

Are there any other common methods such as setRotate that you are using?

You can create this sub:

B4X:

Sub SetRotate(n As Node, Degrees As Double)
 Dim jo As JavaObject = n
 jo.RunMethod("setRotate", Array(Degrees))
End Sub

B4X:

SetRotate(label1, 45)
SetRotate(label2, 90)

jmon · Jan 22, 2016

Thanks

I was thinking about a general way of calling any Javafx method, like setPrefWidth, setMinWidth, setGraphic etc... that doesn't exist in B4J
At the moment I use the asJo method by daestrum, which I find convenient enough. This idea I propose is just to make the code simpler and cleaner, nothing more

Daestrum · Jan 22, 2016

If, in Erels example, you change n As Node to JavaObject, you don't need to create jo and can use n.RunMethod("...",...)

Erel · Jan 24, 2016

Daestrum said:
If, in Erels example, you change n As Node to JavaObject, you don't need to create jo and can use n.RunMethod("...",...)

You are thinking out of the box

tango · Jun 14, 2016

hi erel
RunMethod("setRotate", Array(Degrees))
what are the other parametres. eg. "setrotate","gettext", etc.

jmon · Jun 15, 2016

tango said:
hi erel

Erel doesn't like the post to be targeted at him. It's an open forum, for everyone to answer

tango said:
what are the other parametres

https://docs.oracle.com/javase/8/javafx/api/javafx/scene/Node.html#method.summary

Daestrum · Jun 15, 2016

An all purpose sub - not quite what you wanted but flexible to allow for any method call

B4X:

...   
    Dim l As Label
    l.Initialize("")
    l.Text = "Hello"
    MainForm.RootPane.AddNode(l,20,20,-1,-1)
    RunMethod(l,"setRotate",Array(45.0))
End Sub
Sub RunMethod(n As JavaObject,method As String,args() As Object)
    n.RunMethod(method,args)
End Sub

eps · Jul 20, 2017

Daestrum said:
An all purpose sub - not quite what you wanted but flexible to allow for any method call

B4X:

... Dim l As Label l.Initialize("") l.Text = "Hello" MainForm.RootPane.AddNode(l,20,20,-1,-1) RunMethod(l,"setRotate",Array(45.0)) End Sub Sub RunMethod(n As JavaObject,method As String,args() As Object) n.RunMethod(method,args) End Sub

Thanks for this - I've just re-purposed this and also added a return value as well

B4X:

Sub RunMethod(n As JavaObject,method As String,args() As Object) As Object

    Return n.RunMethod(method,args)

End Sub

Wish RunMethod for every nodes

jmon

Well-Known Member

Erel

B4X founder

jmon

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Daestrum

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Erel

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tango

Active Member

jmon

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Daestrum

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eps

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