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 17 package com.android.settings.security; 18 19 import android.content.Context; 20 import android.os.UserManager; 21 import android.security.KeyStore; 22 import android.support.v7.preference.Preference; 23 24 import com.android.settings.R; 25 26 public class CredentialStoragePreferenceController extends 27 RestrictedEncryptionPreferenceController { 28 29 private static final String KEY_CREDENTIAL_STORAGE_TYPE = "credential_storage_type"; 30 private final KeyStore mKeyStore; 31 CredentialStoragePreferenceController(Context context)32 public CredentialStoragePreferenceController(Context context) { 33 super(context, UserManager.DISALLOW_CONFIG_CREDENTIALS); 34 mKeyStore = KeyStore.getInstance(); 35 } 36 37 @Override getPreferenceKey()38 public String getPreferenceKey() { 39 return KEY_CREDENTIAL_STORAGE_TYPE; 40 } 41 42 @Override updateState(Preference preference)43 public void updateState(Preference preference) { 44 preference.setSummary(mKeyStore.isHardwareBacked() 45 ? R.string.credential_storage_type_hardware 46 : R.string.credential_storage_type_software); 47 } 48 } 49