diff options
Diffstat (limited to 'java/com/android/dialer/storage/StorageModule.java')
-rw-r--r-- | java/com/android/dialer/storage/StorageModule.java | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/java/com/android/dialer/storage/StorageModule.java b/java/com/android/dialer/storage/StorageModule.java new file mode 100644 index 000000000..8c97980c1 --- /dev/null +++ b/java/com/android/dialer/storage/StorageModule.java @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * 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.android.dialer.storage; + +import android.content.Context; +import android.content.SharedPreferences; +import android.preference.PreferenceManager; +import android.support.v4.content.ContextCompat; +import com.android.dialer.inject.ApplicationContext; +import dagger.Module; +import dagger.Provides; +import javax.inject.Singleton; + +/** Module for the storage component. */ +@Module +public class StorageModule { + + @Provides + @Singleton + @DeviceProtected + static SharedPreferences provideDeviceProtectedSharedPreferences( + @ApplicationContext Context appContext) { + // #createDeviceProtectedStorageContext returns a new context each time, so we cache the shared + // preferences object in order to avoid accessing disk for every operation. + Context deviceProtectedContext = ContextCompat.createDeviceProtectedStorageContext(appContext); + + // ContextCompat.createDeviceProtectedStorageContext(context) returns null on pre-N, thus fall + // back to regular default shared preference for pre-N devices since devices protected context + // is not available. + return PreferenceManager.getDefaultSharedPreferences( + deviceProtectedContext != null ? deviceProtectedContext : appContext); + } +} |