content: /*
   * Copyright  2017 [AllenCoder]
   *
   * 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.allen.apputils;
  /*  * 文 件 名:  DataCleanManager.java  * 描    述:  主要功能有清除内/外缓存，清除数据库，清除sharedPreference，清除files和清除自定义目录  */
  
  import android.content.Context;
  import android.os.Environment;
  
  import java.io.File;
  
  /**
   * 本应用数据清除管理器
   */
  public class DataCleanManager {
      /**
       * 清除本应用内部缓存(/data/data/com.xxx.xxx/cache) * * @param context
       */
      public static void cleanInternalCache(Context context) {
          deleteFilesByDirectory(context.getCacheDir());
      }
  
      /**
       * 清除本应用所有数据库(/data/data/com.xxx.xxx/databases) * * @param context
       */
      public static void cleanDatabases(Context context) {
          deleteFilesByDirectory(new File("/data/data/"
                  + context.getPackageName() + "/databases"));
      }
  
      /**
       * * 清除本应用SharedPreference(/data/data/com.xxx.xxx/shared_prefs) * * @param
       * context
       */
      public static void cleanSharedPreference(Context context) {
          deleteFilesByDirectory(new File("/data/data/"
                  + context.getPackageName() + "/shared_prefs"));
      }
  
      /**
       * 按名字清除本应用数据库 * * @param context * @param dbName
       */
      public static void cleanDatabaseByName(Context context, String dbName) {
          context.deleteDatabase(dbName);
      }
  
      /**
       * 清除/data/data/com.xxx.xxx/files下的内容 * * @param context
       */
      public static void cleanFiles(Context context) {
          deleteFilesByDirectory(context.getFilesDir());
      }
  
      /**
       * * 清除外部cache下的内容(/mnt/sdcard/android/data/com.xxx.xxx/cache) * * @param
       * context
       */
      public static void cleanExternalCache(Context context) {
          if (Environment.getExternalStorageState().equals(
                  Environment.MEDIA_MOUNTED)) {
              deleteFilesByDirectory(context.getExternalCacheDir());
          }
      }
  
      /**
       * 清除自定义路径下的文件，使用需小心，请不要误删。而且只支持目录下的文件删除 * * @param filePath
       */
      public static void cleanCustomCache(String filePath) {
          deleteFilesByDirectory(new File(filePath));
      }
  
      /**
       * 清除本应用所有的数据 * * @param context * @param filepath
       */
      public static void cleanApplicationData(Context context, String... filepath) {
          cleanInternalCache(context);
          cleanExternalCache(context);
          cleanDatabases(context);
          cleanSharedPreference(context);
          cleanFiles(context);
          for (String filePath : filepath) {
              cleanCustomCache(filePath);
          }
      }
  
      /**
       * 删除方法 这里只会删除某个文件夹下的文件，如果传入的directory是个文件，将不做处理 * * @param directory
       */
      private static void deleteFilesByDirectory(File directory) {
          if (directory != null && directory.exists() && directory.isDirectory()) {
              for (File item : directory.listFiles()) {
                  item.delete();
              }
          }
      }
  }
  