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.settingslib.deviceinfo; 18 19 import android.content.Context; 20 import android.os.Build; 21 import android.text.TextUtils; 22 23 import androidx.annotation.VisibleForTesting; 24 import androidx.preference.Preference; 25 import androidx.preference.PreferenceScreen; 26 27 import com.android.settingslib.core.AbstractPreferenceController; 28 29 /** 30 * Preference controller for displaying device serial number. Wraps {@link Build#getSerial()}. 31 */ 32 public class AbstractSerialNumberPreferenceController extends AbstractPreferenceController { 33 34 @VisibleForTesting 35 static final String KEY_SERIAL_NUMBER = "serial_number"; 36 37 private final String mSerialNumber; 38 39 public AbstractSerialNumberPreferenceController(Context context) { 40 this(context, Build.getSerial()); 41 } 42 43 @VisibleForTesting 44 AbstractSerialNumberPreferenceController(Context context, String serialNumber) { 45 super(context); 46 mSerialNumber = serialNumber; 47 } 48 49 @Override 50 public boolean isAvailable() { 51 return !TextUtils.isEmpty(mSerialNumber); 52 } 53 54 @Override 55 public void displayPreference(PreferenceScreen screen) { 56 super.displayPreference(screen); 57 final Preference pref = screen.findPreference(KEY_SERIAL_NUMBER); 58 if (pref != null) { 59 pref.setSummary(mSerialNumber); 60 } 61 } 62 63 @Override 64 public String getPreferenceKey() { 65 return KEY_SERIAL_NUMBER; 66 } 67 } 68
