Monday, June 20, 2011

Using SharedPreferences in Android Properly

The use of SharedPreferences outside of an Activity Class can become very tedious. This is because PreferenceManager.getDefaultSharedPreferences(Context context) requires a context object. In order to simplify things an easy solution is to use the Application object like this.

public class MyApplication extends Application {

   public static SharedPreferences settings;

   public void onCreate() {

This code will work because the Application object is created before all other activities, hence the initialization is guaranteed. Now the SharedPreferences can be simply statically accessed via MyApplication.settings.

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