Abit/app/src/main/java/ch/dissem/apps/abit/SettingsFragment.java

package ch.dissem.apps.abit;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;

import com.mikepenz.aboutlibraries.Libs;
import com.mikepenz.aboutlibraries.LibsBuilder;

import ch.dissem.apps.abit.synchronization.SyncAdapter;

import static ch.dissem.apps.abit.util.Constants.PREFERENCE_SERVER_POW;
import static ch.dissem.apps.abit.util.Constants.PREFERENCE_TRUSTED_NODE;

/**
 * @author Christian Basler
 */
public class SettingsFragment
        extends PreferenceFragment
        implements SharedPreferences.OnSharedPreferenceChangeListener {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Load the preferences from an XML resource
        addPreferencesFromResource(R.xml.preferences);

        Preference about = findPreference("about");
        about.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
            @Override
            public boolean onPreferenceClick(Preference preference) {
                new LibsBuilder()
                        .withActivityTitle(getActivity().getString(R.string.about))
                        .withActivityStyle(Libs.ActivityStyle.LIGHT_DARK_TOOLBAR)
                        .withAboutIconShown(true)
                        .withAboutVersionShown(true)
                        .withAboutDescription(getString(R.string.about_app))
                        .start(getActivity());
                return true;
            }
        });

        Preference status = findPreference("status");
        status.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
            @Override
            public boolean onPreferenceClick(Preference preference) {
                startActivity(new Intent(getActivity(), StatusActivity.class));
                return true;
            }
        });
    }

    @Override
    public void onAttach(Context ctx) {
        super.onAttach(ctx);
        PreferenceManager.getDefaultSharedPreferences(ctx)
                .registerOnSharedPreferenceChangeListener(this);
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
        switch (key) {
            case PREFERENCE_TRUSTED_NODE:
                String node = sharedPreferences.getString(PREFERENCE_TRUSTED_NODE, null);
                if (node != null) {
                    SyncAdapter.startSync(getActivity());
                } else {
                    SyncAdapter.stopSync(getActivity());
                }
                break;
            case PREFERENCE_SERVER_POW:
                if (sharedPreferences.getBoolean(PREFERENCE_SERVER_POW, false)) {
                    SyncAdapter.startPowSync(getActivity());
                } else {
                    SyncAdapter.stopPowSync(getActivity());
                }
                break;
        }
    }
}