Question

I just start to study android, so have some problem

i have a file res/xml/settings.xml – settings from menu
create class Prefs and try to use settings from file above

package org.example.sudoku;

import android.os.Bundle;
import android.preference.PreferenceActivity;

public class Prefs extends PreferenceActivity {
       @Override
       protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          addPreferencesFromResource(R.xml.settings);
       }
    }

Problem, that addPreferencesFromResource cant be used and i need to use preferencesResId (according to comments), but if i write something like this

     preferencesResId(R.xml.settings);

its not good.

Where is error in code? Could any1 help?
Also i try to learn android by using book – Hello Android.

Answer 1

preferencesResId() is not a method, it is a placeholder in conversation for your resource id (R.xml.settings).

So although

addPreferencesFromResource(R.xml.settings);

Is deprecated, if you’re using this approach, this is still the most correct way – there isn’t another way using the deprecated approach.

I suggest you look at this SO question – it tells you what you should be using instead (PreferenceFragments). If you need a code sample, fire up Eclipse and the ADT plugin and make a SettingsActivity via the new Activity Wizard.

And as usual, here is the full JavaDoc for PreferenceActivity.