Global variables and Callbacks

Developer Programs Writing SmartApps
#1

How do you achieve global variables in Groovy. I have looked at some examples on line but cannot get them to work. In a nut shell I have a sendHubCommand that has a callback associated with it. What I would like is to update some global variable and then use that data in another method. I have tried using

@Field String array = new String[10]
…
…
def callback(…)
{
array = {…}
log( array )
}

def anotherMethod()
{
log(array)
}

In the above example the log outputs the value the populated array from the callback method. However, when being output in ‘anotherMethod’ it is always empty. I have tried loads of different combinations but to the same avail.

How can I achieve this.

Thanks

Steve

#2

Use state.array = […] in callback() and then you can access it from anotherMethod()

state is a global object of type map

#3

Take a look at Edge Drivers! They run locally and allow automations to run the same way (depending on the Automation config)

There are different samples than can help you get started:

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