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[udig-devel] Help with adding layers
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Hello all,
I'm having trouble with my icons especially with the events that fire when
the user clicks on them. I understand that the AbstractActionTool is used
for a basic icon where the user can simply click on it once to fire an
event.
However, I'm just starting to learn uDig and I'm becoming more efficianty
with Java although I'm still learning. I recently hacked a piece of code
from the Internet that enables the user to add a layer I tried to use the
AbstractActionTool extension with the code but it gave me an error
message stating "the type AddLayer must implement the inherited abstract
method Tool.dispose()"
AddLayer is my class name. Whenever I use the AbstractCommand implements
UndoableCommand when the user clicks the icon nothing happens so I created
another class using the AbstractActionTool extension and called my other
class from its run method. This now fires the event but the layer is null
when it's clicked giving me a java.lang.NullPointerException. Its obviously
wrong so can anyone shed some light on this problem?
James.
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