SettingsActivity.java

package com.angrykings.activities;

import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.util.Log;

import com.angrykings.R;
import com.angrykings.ServerConnection;
import com.angrykings.utils.ServerMessage;

public class SettingsActivity extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener {



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

        addPreferencesFromResource(R.xml.preferences);
        setContentView(R.layout.activity_preferences);
        final SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
        settings.registerOnSharedPreferenceChangeListener(this);
    }


    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String s) {

        final SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());

        if(s.equals("username")){
            Log.d("SettingText", settings.getString(s, ""));
            ServerConnection.getInstance().sendTextMessage(ServerMessage.setName(settings.getString(s, "")));
        }

    }
}