Solawe,

so if i repeat your need : -> 1 complex object has to be stored and retrieved when your app stop/ start -> This object must be accessible in your program

If I were you I'll do the follwing -> To store and retrieve your file, use java serialization mechanism. You'll find a lot of information and tutorial on internet. -> This class should be the singleton fo a singleton pattern

You should have a méthode getInstance like this: public class A implements Serializable { A a = null; public static A getInstance(){ if (a = null){ 1/ first try to deserialize the persistence file ... I let you work here :-)

2/ if the file does not exisits, for the first time for instance: a = new A() }//end if return a; }//end method

public save(){ // save your class thanks to serialization in a file } }//end class

You'll find infiormation on how to store file in locale application context here : http://code.google.com/android/devel/data.html

Every time you need to use your instance call A.getinstance()

Save with A.getinstance().save()

Rgds

C.

On Jul 25, 12:11 pm, solawe <ikra...@gmail.com> wrote: