Static variables in your Android Application

Instead of declaring static variables in an activity you can also do it in your own subclass of the Activity class, which is a singleton.

Within strings.xml I have the application version.

<resources>

   <string name="version_name">2.0.0</string>

</resources

I didn't want to store this value second time as a constant in my java code. And here is the solution.

public class MyApp extends Application {    private static String appVersion = "";    public static void setAppVersion (String version)    {       appVersion = version;    }      public static String getAppVersion ()    {       return appVersion;    } }     In my first activity I initialize version variables: public void onCreate(Bundle savedInstanceState) {    ...    String appVersion = this.getString(R.string.version_name);    MyApp.setAppVersion(appVersion);    ... }   Now version value can be read everywhere in your application also in normal java classes:

...

String version = MyApp.getEasyGOVersion();

...

 

Try this :)