1 /* 2 * Copyright (C) 2023 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.car.settings.wifi; 18 19 import android.car.drivingstate.CarUxRestrictions; 20 import android.content.Context; 21 import android.graphics.Bitmap; 22 import android.net.wifi.SoftApConfiguration; 23 import android.util.Log; 24 import android.widget.ImageView; 25 26 import com.android.car.settings.R; 27 import com.android.car.settings.common.FragmentController; 28 import com.android.car.settings.wifi.preferences.WifiTetherQrCodePreference; 29 import com.android.settingslib.qrcode.QrCodeGenerator; 30 31 /** 32 * Controls WiFi Hotspot QR code. 33 */ 34 public class WifiTetherQrCodePreferenceController extends 35 WifiTetherBasePreferenceController<WifiTetherQrCodePreference> implements 36 WifiTetheringHandler.WifiTetheringAvailabilityListener { 37 private static final String TAG = WifiTetherPasswordPreferenceController.class.getSimpleName(); 38 private static final String QR_CODE_FORMAT = "WIFI:T:WPA;S:%s;P:%s;;"; 39 private static final String QR_CODE_FORMAT_NOPASS = "WIFI:T:nopass;S:%s;;"; 40 41 private WifiTetheringHandler mWifiTetheringHandler; 42 WifiTetherQrCodePreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions)43 public WifiTetherQrCodePreferenceController(Context context, 44 String preferenceKey, 45 FragmentController fragmentController, 46 CarUxRestrictions uxRestrictions) { 47 super(context, preferenceKey, fragmentController, uxRestrictions); 48 mWifiTetheringHandler = new WifiTetheringHandler(context, 49 fragmentController.getSettingsLifecycle(), this); 50 } 51 52 @Override getPreferenceType()53 protected Class<WifiTetherQrCodePreference> getPreferenceType() { 54 return WifiTetherQrCodePreference.class; 55 } 56 57 @Override getSummary()58 protected String getSummary() { 59 return null; 60 } 61 62 @Override getDefaultSummary()63 protected String getDefaultSummary() { 64 return null; 65 } 66 67 @Override onStartInternal()68 protected void onStartInternal() { 69 mWifiTetheringHandler.onStartInternal(); 70 } 71 72 @Override onStopInternal()73 protected void onStopInternal() { 74 mWifiTetheringHandler.onStopInternal(); 75 } 76 77 @Override onWifiTetheringAvailable()78 public void onWifiTetheringAvailable() { 79 updateQrCode(); 80 } 81 82 @Override onWifiTetheringUnavailable()83 public void onWifiTetheringUnavailable() { 84 updateQrCode(); 85 } 86 87 @Override enablePreference()88 public void enablePreference() { 89 // No op. 90 } 91 92 @Override disablePreference()93 public void disablePreference() { 94 // No op. 95 } 96 97 @Override getDefaultAvailabilityStatus()98 protected int getDefaultAvailabilityStatus() { 99 if (mWifiTetheringHandler.isWifiTetheringEnabled()) { 100 return AVAILABLE_FOR_VIEWING; 101 } 102 return CONDITIONALLY_UNAVAILABLE; 103 } 104 updateQrCode()105 private void updateQrCode() { 106 if (mWifiTetheringHandler.isWifiTetheringEnabled()) { 107 String name = getCarSoftApConfig().getSsid(); 108 String password = getCarSoftApConfig().getPassphrase(); 109 int securityType = getCarSoftApConfig().getSecurityType(); 110 String content; 111 if (securityType == SoftApConfiguration.SECURITY_TYPE_OPEN) { 112 content = String.format(QR_CODE_FORMAT_NOPASS, name); 113 } else { 114 content = String.format(QR_CODE_FORMAT, name, password); 115 } 116 try { 117 int size = Math.round(getContext().getResources().getDimension( 118 R.dimen.hotspot_qr_code_size)); 119 Bitmap bmp = QrCodeGenerator.encodeQrCode(content, size); 120 121 ImageView qrCode = getPreference().getQRCodeView(); 122 if (qrCode != null) { 123 qrCode.setImageBitmap(bmp); 124 } 125 } catch (Exception e) { 126 Log.w(TAG, "Exception found: " + e); 127 } 128 } 129 130 refreshUi(); 131 } 132 133 } 134