1 /*
2  * Copyright (C) 2016 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.emergency;
17 
18 /**
19  * Provides common methods to be called when reloading a preference.
20  */
21 public interface ReloadablePreferenceInterface {
22 
23     /** Reloads the value from the preference and updates the summary with that value. */
reloadFromPreference()24     void reloadFromPreference();
25 
26     /**
27      * Returns whether the persisted string is empty or set to the default value, i.e. the user
28      * didn't set it.
29      */
isNotSet()30     boolean isNotSet();
31 }
32