关于偏好改变的Android吐司

Question

I want to tell the user that when he has changed one or more fields in the preference window that it was succesfully changed but I am running into some problems:

        listener = new SharedPreferences.OnSharedPreferenceChangeListener() {
          public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
            // Implementation
              Toast.makeText(this,
                        "You have selected ",
                        Toast.LENGTH_SHORT).show();
          }
        };
        appPrefs.registerOnSharedPreferenceChangeListener(listener);

however I get the following error:

The method makeText(Context, CharSequence, int) in the type Toast is not applicable for the arguments (new SharedPreferences.OnSharedPreferenceChangeListener(){}, String, int)

Can anyone tell me why I'm getting this?

Answer 1

Toast.makeText(ActivityName.this,
                    "You have selected ",
                    Toast.LENGTH_SHORT).show();

You should use activity context as the first parameter