Android Question [B4X] [XUI] How to get a Canvas from a B4XCanvas?

Erel

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• Jan 29, 2019

• #2

https://www.b4x.com/android/forum/threads/b4xcanvas-getcanvas.98799/#post-622296

 

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M

Marcob

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• Jan 29, 2019

• #3

Erel said:

https://www.b4x.com/android/forum/threads/b4xcanvas-getcanvas.98799/#post-622296

Click to expand...

Thank you for pointing out that.
Strangely, however, this code:

B4X:

Dim cvs As B4xCanvas
...
Dim cv As Canvas = GetNativeCanvas(cvs)

Sub GetNativeCanvas (b4x As B4XCanvas) As Canvas
    Dim jo As JavaObject = b4x
    Return jo.GetFieldJO("cvs").RunMethod("getObject", Null)
End Sub

returns the following error:

java.lang.RuntimeException: Method: getObject not found in: anywheresoftware.b4a.objects.drawable.CanvasWrapper

What am I doing wrong?

 

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DonManfred

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• Jan 29, 2019

• #4

Marcob said:

What am I doing wrong?

Click to expand...

probably more a question of which B4A Version you are using

 

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Erel

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• Jan 29, 2019

• #5

Remove this part: .RunMethod("getObject", Null)

Only needed in B4J.

 

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M

Marcob

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• Jan 29, 2019

• #6

Now it works.
Thank you very much!

 

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