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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.os.storage;
     18 
     19 /**
     20  * Callback class for receiving progress reports during a restore operation.  These
     21  * methods will all be called on your application's main thread.
     22  * @hide
     23  */
     24 public abstract class MountServiceListener {
     25     /**
     26      * USB Mass storage connection state has changed.
     27      *
     28      * @param connected True if UMS is connected.
     29      */
     30     void onUsbMassStorageConnectionChanged(boolean connected) {
     31     }
     32 
     33     /**
     34      *  Storage state has changed.
     35      *
     36      * @param path The volume mount path.
     37      * @param oldState The old state of the volume.
     38      * @param newState The new state of the volume.
     39      *
     40      * @Note: State is one of the values returned by Environment.getExternalStorageState()
     41      */
     42     void onStorageStateChange(String path, String oldState, String newState) {
     43     }
     44 }
     45