Java Question Create static libraries

corwin42 · Jan 14, 2013

With B4A 2.50 it is possible to compile code modules to a library and the methods in it can be called in a static way (you don't need to Dim an object to call these methods)

I think this is possible because of the class declaration in the xml:

<class b4a_type="StaticCode">

Is this supported somehow by the BADoclet.class or will there be a newer version of it so we can create static methods for our own libraries and we don't need to Dim a dummy object for calling such methods?

Erel · Jan 14, 2013

There is no change. You cannot (safely) use this attribute from a Java library.

You can create static methods and access them with instance variables. I don't see any major advantage for accessing these methods from the type directly.

corwin42 · Jan 14, 2013

I think the only advantage would be that you don't need the Dim for the instance variable.

I just wondered if it is possible because I created a class with only static methods in it and there is no possibility to call them "the static way" but it is possible when you create a library from a code module.

zolive33 · May 27, 2013

corwin42 said:
I think the only advantage would be that you don't need the Dim for the instance variable.

I just wondered if it is possible because I created a class with only static methods in it and there is no possibility to call them "the static way" but it is possible when you create a library from a code module.

Yes it's possible (I just tried). Under Eclipse, in xml file, you have to modify the definition of the class by adding b4a_type="StaticCode". I think that all objects must static.

:sign0013: I'm not good in english!

Example :

ZOTest.java

B4X:

import anywheresoftware.b4a.BA.ShortName;

@ShortName("ZOTest")

public class ZOTest
{
  public static final int Var_A = 1;
  public static final int Var_B = 2;
}

MyLib.xml

B4X:

<class b4a_type="StaticCode">
        <name>zolive33.b4a.Library.MyLib.ZOTest</name>
        <shortname>ZOTest</shortname>
        <owner>process</owner>
        <field>
            <name>Var_B</name>
            <comment></comment>
            <returntype>int</returntype>
        </field>
        <field>
            <name>Var_A</name>
            <comment></comment>
            <returntype>int</returntype>
        </field>
    </class>

B4A :

B4X:

Msgbox ("test : " & ZOTest.Var_B ,"OK")

Java Question Create static libraries

corwin42

Expert

Erel

B4X founder

corwin42

Expert

zolive33

Active Member

Java Question Create static libraries

corwin42

Expert

Erel

B4X founder

corwin42

Expert

zolive33

Active Member

Privacy & Transparency

Privacy & Transparency