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.dialer.storage;
17 
18 import android.content.Context;
19 import android.content.SharedPreferences;
20 import android.preference.PreferenceManager;
21 import android.support.v4.content.ContextCompat;
22 import com.android.dialer.inject.ApplicationContext;
23 import com.android.dialer.inject.DialerVariant;
24 import com.android.dialer.inject.InstallIn;
25 import dagger.Module;
26 import dagger.Provides;
27 import javax.inject.Singleton;
28 
29 /** Module for the storage component. */
30 @InstallIn(variants = {DialerVariant.DIALER_TEST})
31 @Module
32 public class StorageModule {
33 
34   @Provides
35   @Singleton
36   @Unencrypted
provideUnencryptedSharedPrefs(@pplicationContext Context appContext)37   static SharedPreferences provideUnencryptedSharedPrefs(@ApplicationContext Context appContext) {
38     // #createDeviceProtectedStorageContext returns a new context each time, so we cache the shared
39     // preferences object in order to avoid accessing disk for every operation.
40     Context deviceProtectedContext = ContextCompat.createDeviceProtectedStorageContext(appContext);
41 
42     // ContextCompat.createDeviceProtectedStorageContext(context) returns null on pre-N, thus fall
43     // back to regular default shared preference for pre-N devices since devices protected context
44     // is not available.
45     return PreferenceManager.getDefaultSharedPreferences(
46         deviceProtectedContext != null ? deviceProtectedContext : appContext);
47   }
48 }
49