Create and remove items from list (marker)

[Marius_D]

Hi, what is the best way to remove only inactive markers on a map?

The markers are created from online database but if a user close the app the marker remain in database.

What I think about is a timer in database so I have something like:

- user1
    - lat: "0.1"
    - long: "0.2"
    - timer:"17588451155"
- user2
    - lat: "0.3"
    - long: "0.4"
    - timer:"17588451255"

but how can I check if user timer is not changed for 10 min then don't put it on "create marker list"
Does is make any sense?
Thank you!

[TIMAI2]

Compare the timer set in the database with the Clock.SystemTime block output, then do something if difference is greater than 1000x60x10 (ten minutes in milliseconds)

[Marius_D]

Thank you TIMAI2, so this is the "cleanest" solution?

can you help me with some blocks. I dont really know where to start.

I have this:

and I need to use for each item in list from 1 to :lenght of list: by1 to make a list of lat a list of long and a list of clocks ? and then when I compare clock how to know witch lat long to extract from coresponding index?
Very confused...

[TIMAI2]

I would first sort out how you are storing your data to make life a bit easier. Can you store each record in a flat json like so:

{"ABC":{"lat":51.3,"lon":0.65,"clock":17144},"DEF":{"lat":51.4,"lon":0.69,"clock":17145}}

Then decode and test using dictionaries. Something like this:

[Marius_D]

firebase is in the sama format like yours but I cannot get it working. Is this correct?

test.aia (2.3 KB)

thank you very much for your help

[TIMAI2]

It works OK, you need your test lat and lon to show on the displayed map!

[Marius_D]

i got it thank you