Android Question Creating and executing dynamic object assignments at runtime ?

[Aegis]

Hello
Basically, I've been wondering if part of the left side of an assignment can be made parametric.
To explain:

Lets say i have a json of properties

{
        "widht": "100%",
        "color": -1454129,
        "txtcolor": -12864927,
        "xoffset": 0
    .........
},

I get the json from an mqtt server, and assign those properties to an object.
Now, what if i dont know beforehand which and how many the managed properties will be? Maybe just these 4, maybe 100 or n
Is it possible to write code like this?

MyObject.interface.X = Y

Of course assuming the json doesnt contain properties unsupported by Myobject.interface.
I know something similar can be done in .net, no clue about b4x thou


Thanks alot for your time

 

[Erel]

This tool will help you parse the json string: https://b4x.com:51041/json/index.html

The "automatic way" is relevant when you send data between B4X applications. You can then use B4XSerializator to convert the type to bytes and vice versa.

In this case you should use a Map.

 

[Aegis]

Thanks for the reply, but if i understood correctly, isnt that just skipping the json middleman?

1-Subscribe to the topic
2-Wait for the json string (or serialized map)
2-Parse that string into a map (or un-serialize the map)
3-Pass such map to a sub that creates views based on the attributes, to be added in a xcustomlistview

Es. for color:

Dim p As B4XView = xui.CreatePanel("")
Dim panelcolor As Int = m.Getdefault("color",Colors.Transparent)
p.color=panelcolor
......

....Rinse and repeat for all the properties


What im looking for , is something like this:

Dim p As B4XView = xui.CreatePanel("")
For Each k As String In map.Keys
    p.<k> = map.get(k)  
Next

...iterating on all the map, setting properties i didnt even consider when compiling the code

 

[Erel]

As none of the key names match the B4XView properties it will not work in any way.

You will need to write the code that set the properties.