Android Question map to List and reverse

Dim m AsMap = liste.Get(1)

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    Dim From,Message,Zeit As String
       
    Zeit=DateTime.Now
    From= "abc@example.com"
    Message="This is a message.More ...    "

    Dim liste As List
     liste.Initialize
    'put some data into a list

    Dim m As Map
   
    m.Initialize
    m.Put("id_user",From)
    m.Put("message",Message)
    m.Put("dtime", Zeit)
    Log("Map: " & m)
    liste.Add(m)
   
    Log(liste)
    'back from list to variable
    Dim m As Map = liste.Get(0) 'List index starts at zero
    Log("Retrieved message"  & m)
    Dim msg As String = m.Get("message")
   
    Log("Msg: " & msg)

Map: (MyMap) {id_user=abc@example.com, message=This is a message.More ... , dtime=1496741186827}
(ArrayList) [{id_user=abc@example.com, message=This is a message.More ... , dtime=1496741186827}]
Retrieved message(MyMap) {id_user=abc@example.com, message=This is a message.More ... , dtime=1496741186827}
Msg: This is a message.More ...
** Activity (main) Pause, UserClosed = false **
** Activity (main) Resume **

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FrankDev said:

no.. the List contains hundred of items

is this realy the right syntax ?

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liste.Add(m) '<-- 1 item

FrankDev said:

hi Derek,

thanks for help.. i found MY mistake.
Thought that the list is already initialized. but it wasn't


A small mistake that cost me many hours.
I thought I had a wrong syntax

much thanks.

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Error occurred on line: 65 (Main)
java.lang.RuntimeException: Object should first be initialized (List).
at anywheresoftware.b4a.AbsObjectWrapper.getObject(AbsObjectWrapper.java:50)
...etc

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FrankDev said:

have never tried to use the debugmode because I always test on the smartphone.

I did not know that worked there.

Frank

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FrankDev said:

have never tried to use the debugmode because I always test on the smartphone.

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