use Activity object in a class

melamoud · Jan 9, 2013

I'm writing a code inside a class and I need to run this line

B4X:

Dim nd As ClsExplorer   
'nd.Initialize(Activity, File.DirRootExternal,"",True,True,"Ok")   
nd.Initialize(Main, File.DirRootExternal,"",True,True,"Ok")

but I get a strange error from B4a something about needing layout for activity wrapper

when this line (the first one in comment) running inside Main no problems)

thanks

Erel · Jan 9, 2013

Can you post the exact error message?

melamoud · Jan 9, 2013

I can screen capture it, it does not allow me to copy it (text copy)

Erel · Jan 9, 2013

If you get this message during compilation then you can compile with Alt + 1 (foreground compilation). The error will appear in the compilation window.

melamoud · Jan 9, 2013

B4X:

Compiling code.                         0.46
Compiling layouts code.                 0.00
Generating R file.                      2.79
Compiling generated Java code.          Error
B4A line: 123
nd.Initialize(Main, File.DirRootExternal,\
javac 1.7.0_07
src\appsright\musicnotifier\foldersmanager.java:86: error: inconvertible types
_nd._initialize(ba,(anywheresoftware.b4a.objects.ActivityWrapper) anywheresoftware.b4a.AbsObjectWrapper.ConvertToWrapper(new anywheresoftware.b4a.objects.ActivityWrapper(), (anywheresoftware.b4a.BALayout)(_main.getObject())),__c.File.getDirRootExternal(),"",__c.True,__c.True,"Ok");
                                                                                                                                                                                                            ^
  required: BALayout
  found:    Class<CAP#1>
  where CAP#1 is a fresh type-variable:
    CAP#1 extends Object from capture of ?

Erel · Jan 10, 2013

You should pass the Activity object to Initialize. You will need to pass it to the class and store it in a global variable.

melamoud · Jan 10, 2013

Erel said:
You should pass the Activity object to Initialize. You will need to pass it to the class and store it in a global variable.

thanks thats what I did,
can you explain why I cant pass the activity as a param to the sub ?

Erel · Jan 10, 2013

You can also pass it to the sub.

melamoud · Jan 10, 2013

Erel said:
You can also pass it to the sub.

thanks, for some reason it did not worked for me before, but now it does, I
probably had something else that I was doing wrong.

thanks.

use Activity object in a class

melamoud

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Erel

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melamoud

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melamoud

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Erel

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melamoud

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