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.wifi.tether; 18 19 import static android.net.wifi.WifiConfiguration.AP_BAND_2GHZ; 20 import static android.net.wifi.WifiConfiguration.AP_BAND_5GHZ; 21 22 import android.content.Context; 23 import android.net.wifi.WifiConfiguration; 24 import android.support.v7.preference.ListPreference; 25 import android.support.v7.preference.Preference; 26 import android.support.v7.preference.PreferenceScreen; 27 28 import com.android.settings.R; 29 30 public class WifiTetherApBandPreferenceController extends WifiTetherBasePreferenceController { 31 32 private static final String PREF_KEY = "wifi_tether_network_ap_band"; 33 private static final String[] BAND_VALUES = 34 {String.valueOf(AP_BAND_2GHZ), String.valueOf(AP_BAND_5GHZ)}; 35 36 private final String[] mBandEntries; 37 private int mBandIndex; 38 WifiTetherApBandPreferenceController(Context context, OnTetherConfigUpdateListener listener)39 public WifiTetherApBandPreferenceController(Context context, 40 OnTetherConfigUpdateListener listener) { 41 super(context, listener); 42 mBandEntries = mContext.getResources().getStringArray(R.array.wifi_ap_band_config_full); 43 final WifiConfiguration config = mWifiManager.getWifiApConfiguration(); 44 if (config == null) { 45 mBandIndex = 0; 46 } else if (is5GhzBandSupported()) { 47 mBandIndex = config.apBand; 48 } else { 49 config.apBand = 0; 50 mWifiManager.setWifiApConfiguration(config); 51 mBandIndex = config.apBand; 52 } 53 } 54 55 @Override displayPreference(PreferenceScreen screen)56 public void displayPreference(PreferenceScreen screen) { 57 super.displayPreference(screen); 58 ListPreference preference = (ListPreference) mPreference; 59 if (!is5GhzBandSupported()) { 60 preference.setEnabled(false); 61 preference.setSummary(R.string.wifi_ap_choose_2G); 62 } else { 63 preference.setEntries(mBandEntries); 64 preference.setEntryValues(BAND_VALUES); 65 preference.setSummary(mBandEntries[mBandIndex]); 66 preference.setValue(String.valueOf(mBandIndex)); 67 } 68 } 69 70 @Override getPreferenceKey()71 public String getPreferenceKey() { 72 return PREF_KEY; 73 } 74 75 @Override onPreferenceChange(Preference preference, Object newValue)76 public boolean onPreferenceChange(Preference preference, Object newValue) { 77 mBandIndex = Integer.parseInt((String) newValue); 78 preference.setSummary(mBandEntries[mBandIndex]); 79 mListener.onTetherConfigUpdated(); 80 return true; 81 } 82 is5GhzBandSupported()83 private boolean is5GhzBandSupported() { 84 final String countryCode = mWifiManager.getCountryCode(); 85 if (!mWifiManager.isDualBandSupported() || countryCode == null) { 86 return false; 87 } 88 return true; 89 } 90 getBandIndex()91 public int getBandIndex() { 92 return mBandIndex; 93 } 94 } 95