SettingsActivity.java

package com.wigwamlabs.veckify;

import android.content.Context;
import android.content.res.Configuration;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.preference.PreferenceFragment;
import android.view.MenuItem;

import com.wigwamlabs.spotify.ui.SpotifyPreferenceFragment;

import java.util.List;

public class SettingsActivity extends PreferenceActivity {
    private static final boolean ALWAYS_SIMPLE_PREFS = false;

    private static boolean isXLargeTablet(Context context) {
        return (context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
    }

    private static boolean isSimplePreferences(Context context) {
        return ALWAYS_SIMPLE_PREFS
                || Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB
                || !isXLargeTablet(context);
    }

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

        setupSimplePreferencesScreen();
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            startActivity(getParentActivityIntent());
            finish();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    private void setupSimplePreferencesScreen() {
        if (!isSimplePreferences(this)) {
            return;
        }

        // General
        GeneralPreferenceFragment.onCreateSimple(this);

        // Spotify
        PreferenceCategory header = new PreferenceCategory(this);
        header.setTitle(R.string.pref_header_spotify);
        getPreferenceScreen().addPreference(header);
        SpotifyPreferenceFragment.onCreateSimple(this);

        // Legal
        header = new PreferenceCategory(this);
        header.setTitle(R.string.pref_header_legal);
        getPreferenceScreen().addPreference(header);
        LegalPreferenceFragment.onCreateSimple(this);
    }

    @Override
    public boolean onIsMultiPane() {
        return isXLargeTablet(this) && !isSimplePreferences(this);
    }

    @Override
    public void onBuildHeaders(List<Header> target) {
        if (!isSimplePreferences(this)) {
            loadHeadersFromResource(R.xml.pref_headers, target);
        }
    }

    public static class GeneralPreferenceFragment extends PreferenceFragment {
        public static void onCreateSimple(SettingsActivity activity) {
            activity.addPreferencesFromResource(R.xml.pref_general);
        }

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.pref_general);
        }
    }
}