PreferenceActivity.java

package by.fksis.schedule.app;

import android.content.Intent;
import android.os.Bundle;
import by.fksis.schedule.API;
import by.fksis.schedule.Preferences;
import by.fksis.schedule.R;
import by.fksis.schedule.dal.Database;
import com.WazaBe.HoloEverywhere.preference.ListPreference;
import com.WazaBe.HoloEverywhere.preference.Preference;
import com.WazaBe.HoloEverywhere.preference.SharedPreferences;
import com.WazaBe.HoloEverywhere.sherlock.SPreferenceActivity;

import java.util.List;

@SuppressWarnings("deprecation")
public class PreferenceActivity extends SPreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.preferences);
        getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);

        getSupportActionBar().setTitle(R.string.preferences);
        getSupportActionBar().setIcon(R.drawable.logo);

        {
            Preference preference = findPreference(getString(R.string.log_out_preference));
            preference.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
                @Override
                public boolean onPreferenceClick(Preference preference) {
                    API.clearCredentials(PreferenceActivity.this);
                    Intent intent = new Intent(PreferenceActivity.this, MainActivity.class);
                    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(intent);
                    finish();
                    return true;
                }
            });
        }

        {
            ListPreference preference = (ListPreference) findPreference(getString(R.string.subgroup_preference));
            preference.setSummary(getResources().getStringArray(R.array.subgroups)[new Preferences(this).getSubgroup()]);
        }

        {
            ListPreference preference = (ListPreference) findPreference(getString(R.string.group_preference));
            List<String> list = Database.getGroupList();
            if (list.size() > 0) {
                String[] groups = list.toArray(new String[list.size()]);
                preference.setEntries(groups);
                preference.setEntryValues(groups);
                String group = new Preferences(this).getGroup();
                preference.setSummary(list.contains(group) ? group : getString(R.string.group_not_selected));
            }
            preference.setEnabled(list.size() > 0);
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String s) {
        {
            ListPreference preference = (ListPreference) findPreference(getString(R.string.subgroup_preference));
            preference.setSummary(preference.getEntry());
        }

        {
            ListPreference preference = (ListPreference) findPreference(getString(R.string.group_preference));
            preference.setSummary(preference.getValue());
        }
    }
}