packages/DocumentsUI/src/com/android/documentsui/SettingsActivity.java

/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.documentsui;

import android.app.ActionBar;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.view.MenuItem;

public class SettingsActivity extends Activity {
    private static final String KEY_ADVANCED_DEVICES = "advancedDevices";
    private static final String KEY_FILE_SIZE = "fileSize";

    public static boolean getDisplayAdvancedDevices(Context context) {
        return PreferenceManager.getDefaultSharedPreferences(context)
                .getBoolean(KEY_ADVANCED_DEVICES, false);
    }

    public static boolean getDisplayFileSize(Context context) {
        return PreferenceManager.getDefaultSharedPreferences(context)
                .getBoolean(KEY_FILE_SIZE, false);
    }

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

        getFragmentManager()
                .beginTransaction().replace(android.R.id.content, new SettingsFragment()).commit();

        final ActionBar bar = getActionBar();
        if (bar != null) {
            bar.setDisplayShowHomeEnabled(false);
            bar.setDisplayHomeAsUpEnabled(true);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == android.R.id.home) {
            finish();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    public static class SettingsFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preferences);
        }
    }
}