Question

i am developing an android app.
I have some activities in it. And i must have an object which can be available from all activities.
Any ideas how to organize it?

Answer 1

Use the global Application object in the following way:

package com.yourpackagename;

public class App extends Application {
}

In AndroidManifest.xml:

<application android:name=".App">

To access it from an Activity:

App globalApp = (App) getApplicationContext();

The App class will be instantiated automatically when the app starts. It will be available as long as the application process is alive. It can act as a global store in which you can put your things and have access to them throughout the application lifetime.