1 /*
2  * Copyright (C) 2017 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 package com.android.documentsui.prefs;
17 
18 import android.content.Context;
19 import android.content.SharedPreferences;
20 import android.content.SharedPreferences.Editor;
21 import android.preference.PreferenceManager;
22 
23 /**
24  * Methods for accessing the local preferences with regards to scoped directory access.
25  * TODO(b/111892460): Delete this class after Q is released.
26  */
27 @Deprecated
28 public class ScopedAccessLocalPreferences {
29 
30     private static final String TAG = "ScopedAccessLocalPreferences";
31 
getPrefs(Context context)32     private static SharedPreferences getPrefs(Context context) {
33         return PreferenceManager.getDefaultSharedPreferences(context);
34     }
35 
36     /** Clears all scoped directory access preferences. */
clearScopedAccessPreferences(Context context)37     public static void clearScopedAccessPreferences(Context context) {
38         final String keySubstring = "|";
39         final SharedPreferences prefs = getPrefs(context);
40         Editor editor = null;
41         for (final String key : prefs.getAll().keySet()) {
42             if (key.contains(keySubstring)) {
43                 if (editor == null) {
44                     editor = prefs.edit();
45                 }
46                 editor.remove(key);
47             }
48         }
49         if (editor != null) {
50             editor.apply();
51         }
52     }
53 }
54