content: /**
   * Copyright 2014 Zhenguo Jin (jingle1267@163.com)
   * <p/>
   * 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
   * <p/>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p/>
   * 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.rsen.github.androidutils;
  
  import android.content.Context;
  import android.os.Environment;
  import android.text.TextUtils;
  
  /**
   * 应用数据库导出工具类
   *
   * @author jingle1267@163.com
   */
  public final class DatabaseExportUtils {
  
      private static final boolean DEBUG = true;
      private static final String TAG = "DatabaseExportUtils";
  
      /**
       * Don't let anyone instantiate this class.
       */
      private DatabaseExportUtils() {
          throw new Error("Do not need instantiate!");
      }
  
      /**
       * 开始导出数据 此操作比较耗时,建议在线程中进行
       *
       * @param context      上下文
       * @param targetFile   目标文件
       * @param databaseName 要拷贝的数据库文件名
       * @return 是否倒出成功
       */
      public boolean startExportDatabase(Context context, String targetFile,
                                         String databaseName) {
          if (DEBUG) {
              LogUtils.d(TAG, "start export ...");
          }
          if (!Environment.MEDIA_MOUNTED.equals(Environment
                  .getExternalStorageState())) {
              if (DEBUG) {
                  LogUtils.w(TAG, "cannot find SDCard");
              }
              return false;
          }
          String sourceFilePath = Environment.getDataDirectory() + "/data/"
                  + context.getPackageName() + "/databases/" + databaseName;
          String destFilePath = Environment.getExternalStorageDirectory()
                  + (TextUtils.isEmpty(targetFile) ? (context.getPackageName() + ".db")
                  : targetFile);
          boolean isCopySuccess = FileUtils
                  .copyFile(sourceFilePath, destFilePath);
          if (DEBUG) {
              if (isCopySuccess) {
                  LogUtils.d(TAG, "copy database file success. target file : "
                          + destFilePath);
              } else {
                  LogUtils.w(TAG, "copy database file failure");
              }
          }
          return isCopySuccess;
      }
  }
  