Android Question Determine whether user raised event or not

karld

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• Jun 18, 2017

• #2

Use an IF ELSE statement????

 

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swabygw

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• Jun 18, 2017

• #3

Thanks for the response - I had to rewrite the question. The problem is that the event always fires regardless of who or what triggered the event. I'm wondering if there's a way to know if the user or the data triggered the event.

 

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karld

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• Jun 18, 2017

• #4

Well.. I am far from an expert...

Can use pass a flag to your event to tell it who called it?

 

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swabygw

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• Jun 18, 2017

• #5

That's exactly what I'd like to do, but, from what I understand, the procedure is declared like this:

B4X:

Sub MySeekBar_ValueChanged (index As Float, value As Object)

Where the index and value are set automatically by the change, and I don't see a way to include another parameter. Is there a way to include another parameter?

 

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karld

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• Jun 18, 2017

• #6

Please post your code so it can be looked at. These little snippets are hard to determine what you are doing.

 

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swabygw

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• Jun 18, 2017

• #7

Here's a copy of the event:

B4X:

Sub MySeekBar_ValueChanged (index As Float, value As Object)
  CallSub2(Starter, "ReloadData", False)
End Sub

ReloadData is too long to post, but the general idea looks like this:

B4X:

Sub ReloadData
  MySeekBar.Value = ValueFromDatabase
End Sub

The idea is that the ReloadData should only be called when a user changes the value of the SeekBar. But, sometimes, when the data is loaded, it can change the value of the SeekBar, too, which can cause another fire of ReloadData...and possibly an endless loop.

 

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swabygw

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• Jun 18, 2017

• #8

Btw, another post located here: https://www.b4x.com/android/forum/t...ox-checkedchange-event-from-triggering.72120/ had the same issue, but, in their case, the Checkbox has two events: a) CheckedChanged, and b) Click, which separates the events. Perhaps the SeekBar also has two separate events?

 

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swabygw

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• Jun 18, 2017

• #9

I found the answer. The SeekBar does, indeed, have a UserChanged boolean parameter. I didn't see it because I've been using a CustomSlideBar library which eliminated it. I modified the library slightly to pass the value and it works.

 

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karld

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• Jun 18, 2017

• #10

Good Deal!
Glad you found it. I was just going to fire up B4A and play with it.

 

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