Android Question Statement about Error logging with debugger in B4A ?

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ciapw

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Hi there! please let me know if my statement is true or false!
we can use the Log() feature to track till where our program is being executed.
So, for example I am trying to connect to a mqtt broker with some mqtt function then after that i add the Log() after the mqtt connection function.
Is it true that our program has executed the mqtt connection function after it shows our log in the debugger?

thankyou :)
 
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eps

eps

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You have a number of options available to you...

1) Log("Variable Value "& VariableValue) or just a "I'm here processing a specific statement or Function"

2) ToastMessage - these are similar to above but surfaced to the User. They can sometimes be a little slow and get 'stacked' if there are lots.

3) MsgBox - but does interrupt the flow of the

Of course take care if issuing these within Loops, as it can get quite verbose.

See also #BridgeLogger: True - which if set can allow your App to write Log messages when in Release, good for debugging but not desired when Live!

Logs can be filtered - so you only get those in 1) above or unfiltered in which case you get all those in 1) and also 'OS' log messages - which might also help.

HTH
 
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eps

eps

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In your case I'd put a Log message before and after the MQTT statement maybe even a timestamp so I could see the performance
 
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C

ciapw

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eps said:
In your case I'd put a Log message before and after the MQTT statement maybe even a timestamp so I could see the performance
Click to expand...

Thankyou for your replies Mr/Mrs. eps :). What i meant is can we use Log message as an indicator to track the location till where does our program is being executed (as a flag) ?
for example :

B4X: 
mqtt_connect 'call mqtt statement
Log("success")
another_program

As my example above, if our log has shown the message we desire then can we conclude that we have succesfully executed the mqtt_connect because or log has shown the "success" message? So, If our log has not shown the "success" message we could conclude that maybe there is a problem within the mqtt_connect because our log was not shown . I hope you could understand my point
 
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eps

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It depends if the call stops the thread execution.. I'm not sure it will or does, but I don't know it. Is there not a callback or return value from mqtt_connect? It would be better to check that.
 
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Erel

B4X founder
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Everything in your code is synchronous. You don't need to rely on the logs for anything.

B4X: 
mqtt_connect
another_program
If and only if mqtt_connect has completed successfully then another_program will be executed.

This doesn't mean that the connection was actually established. You need to handle the Connected event (or better wait for it with Wait For).
 
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C

ciapw

Member
Licensed User

So.. i cannot say that Log() can be used as an indicator to track which line of our program is being executed right now?
 
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