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.settings.network; 17 18 import android.content.Context; 19 import android.net.NetworkScoreManager; 20 import android.net.NetworkScorerAppData; 21 import android.support.v7.preference.Preference; 22 23 import com.android.settings.R; 24 import com.android.settings.core.BasePreferenceController; 25 import com.android.settingslib.core.AbstractPreferenceController; 26 27 import java.util.List; 28 29 /** 30 * {@link AbstractPreferenceController} that shows the active network scorer and toggles the 31 * preference based on whether or not there are valid scorers installed. 32 */ 33 public class NetworkScorerPickerPreferenceController extends BasePreferenceController { 34 35 private final NetworkScoreManager mNetworkScoreManager; 36 NetworkScorerPickerPreferenceController(Context context, String key)37 public NetworkScorerPickerPreferenceController(Context context, String key) { 38 super(context, key); 39 mNetworkScoreManager = 40 (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 41 } 42 43 @Override getAvailabilityStatus()44 public int getAvailabilityStatus() { 45 return AVAILABLE; 46 } 47 48 @Override updateState(Preference preference)49 public void updateState(Preference preference) { 50 final List<NetworkScorerAppData> allValidScorers = 51 mNetworkScoreManager.getAllValidScorers(); 52 boolean enabled = !allValidScorers.isEmpty(); 53 preference.setEnabled(enabled); 54 if (!enabled) { 55 preference.setSummary(null); 56 return; 57 } 58 59 NetworkScorerAppData scorer = mNetworkScoreManager.getActiveScorer(); 60 if (scorer == null) { 61 preference.setSummary(mContext.getString( 62 R.string.network_scorer_picker_none_preference)); 63 } else { 64 preference.setSummary(scorer.getRecommendationServiceLabel()); 65 } 66 } 67 } 68