Question

In activity I load preferences like:

   public void LoadFontSize(){
        sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
        loadedFontSize = sharedPreferences.getString("fontsize", "font3");
      }

And SharedPreferences sharedPreferences; is declared globally.

I have an ExpandBaseAdapter class operating an ExpandableListView. I want to handle fontsizes in this class, but it shows me

The method getApplicationContext() is undefined for the type
ExpandBaseAdapter

error.

I tried to add sharedPreferences = context.getSharedPreferences("PREF_NAME", Context.MODE_PRIVATE);
but then I get only the default value.

If I add sharedPreferences = PreferenceManager.getDefaultSharedPreferences(ExpandBaseAdapter.this);
I get

The method getDefaultSharedPreferences(Context) in the type
PreferenceManager is not applicable for the arguments
(ExpandBaseAdapter)

What should I do?

Answer 1

You have to pass the application context when you create the instance of this base adapter in your activity.

and declare context as attribute in the base adapter constructer.