Bundle array of arrays is not Working - Android

Question

Im tryin to bundle an Array of Arrays but is not working. Heres a snipped of code for better understanding:

Declaring and Initializing the variable

Inversor[][] reg_equipment= new Inversor[7][5];
for(int i=0; i<7; i++)
{
  for(int j=0;j<5;j++)
  {
    reg_equipment[i][j]= new Inversor();
  }
}
//....

Putting the variable in the bundle

bundle.putSerializable("reg_equipment", reg_equipment);

Intent myIntent =new  Intent(RegisterEquipmentInversor.this,RegisterEquipmentMain.class);
                myIntent.putExtras(bundle);

                startActivity(myIntent);

At this point, the reg_equipment is filled with Inversors [Inversor[0],Inversor[1]....,Inversor[6]] and inside those There are more Inversors.

But when I go "get" the bundle in the other class

reg_equipment = (Inversor[][]) extras.getSerializable("reg_equipment");

This is whats inside de reg_equipment - [Object[0],Object[1],...,[Object[6]] and inside those Objects there are Inversors. Why does this happens ? How can I fix it ?

The class Inversor implements Serializable

Thanks

Stefano Mondino · Accepted Answer · 2012-05-24 13:30:44Z

3

You should try to create a Serializable class that has only one property, which should be your array of Inversor arrays and put that object in your intent. something like

public class InversorArrays implements Serializable {
    public final static int serialVersionUID = //let eclipse generate your uid
    public Inversor[][] myArray = null;
    public InversorArrays (Inversor[][] _myArray){
        this.myArray = _myArray;
    }
}

and then, in your activity, create an instance of InversorArrays an pass it to the intent

Of course, Inversor and its properties should be serializable too.

This workaround sometimes saved me a lot of time and problems with typecasting and conversion problems

answered May 24, 2012 at 13:30

Stefano Mondino

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4 Comments

Akash Over a year ago

Sounds like a good idea. I'll try and let you know the answer!

Akash Over a year ago

Why do I need the serialVersionUID ?

Stefano Mondino Over a year ago

it should be automatically added by eclipse when you're declarating a class that implements serializable.

Akash Over a year ago

It worked! Thanks a lot ;) Still its a mystery why can u bundle a simple array but cant bundle properly an array of arrays..

Quintin B · Accepted Answer · 2012-05-24 13:30:40Z

0

I am not sure, but have you made the investor class serializable? I think if we could get a basic view of the investor class, that may lead to some light.

I would say start off by making Investor serializable. http://www.tutorialspoint.com/java/java_serialization.htm

answered May 24, 2012 at 13:30

Quintin B

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