Android Open Source - LitePal Shared Util

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright (C)  Tony Green, Litepal Framework Open Source Project
 */*ww  w . j  ava 2s  . c o m*/
 * 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 org.litepal.util;

import org.litepal.LitePalApplication;

import android.content.Context;
import android.content.SharedPreferences;

/**
 * LitePal used shared preferences a lot for storing versions and a lot of other
 * necessary values. This utility helps LitePal save and read each key-value
 * pairs from shared preferences file.
 * 
 * @author Tony Green
 * @since 1.0
 */
public class SharedUtil {

  private static final String VERSION = "litepal_version";

  private static final String LITEPAL_PREPS = "litepal_prefs";

  /**
   * Each time database upgrade, the version of database stored in shared
   * preference will update.
   * 
   * @param context
   * @param newVersion
   */
  public static void updateVersion(int newVersion) {
    SharedPreferences.Editor sEditor = LitePalApplication.getContext()
        .getSharedPreferences(LITEPAL_PREPS, Context.MODE_PRIVATE).edit();
    sEditor.putInt(VERSION, newVersion);
    sEditor.commit();
  }

  /**
   * Get the last database version.
   * 
   * @return the last database version
   */
  public static int getLastVersion() {
    SharedPreferences sPref = LitePalApplication.getContext().getSharedPreferences(
        LITEPAL_PREPS, Context.MODE_PRIVATE);
    int version = sPref.getInt(VERSION, 0);
    return version;
  }

}

Java Source Code List

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