1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 11 * KIND, either express or implied. See the License for the specific language governing 12 * permissions and limitations under the License. 13 */ 14 package com.android.settings.applications; 15 16 import android.content.Context; 17 import android.support.v7.preference.Preference; 18 import com.android.settings.R; 19 import com.android.settings.core.PreferenceControllerMixin; 20 import com.android.settings.datausage.DataSaverBackend; 21 import com.android.settingslib.core.AbstractPreferenceController; 22 23 public class SpecialAppAccessPreferenceController extends AbstractPreferenceController 24 implements PreferenceControllerMixin { 25 26 private static final String KEY_SPECIAL_ACCESS = "special_access"; 27 28 private DataSaverBackend mDataSaverBackend; 29 SpecialAppAccessPreferenceController(Context context)30 public SpecialAppAccessPreferenceController(Context context) { 31 super(context); 32 } 33 34 @Override isAvailable()35 public boolean isAvailable() { 36 return true; 37 } 38 39 @Override getPreferenceKey()40 public String getPreferenceKey() { 41 return KEY_SPECIAL_ACCESS; 42 } 43 44 @Override updateState(Preference preference)45 public void updateState(Preference preference) { 46 if (mDataSaverBackend == null) { 47 mDataSaverBackend = new DataSaverBackend(mContext); 48 } 49 final int count = mDataSaverBackend.getWhitelistedCount(); 50 preference.setSummary(mContext.getResources().getQuantityString( 51 R.plurals.special_access_summary, count, count)); 52 } 53 } 54