1 /* 2 * Copyright (C) 2019 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.developeroptions.bluetooth; 18 19 import static android.os.UserManager.DISALLOW_CONFIG_BLUETOOTH; 20 21 import android.app.settings.SettingsEnums; 22 import android.bluetooth.BluetoothAdapter; 23 import android.bluetooth.BluetoothDevice; 24 import android.bluetooth.BluetoothDevicePicker; 25 import android.content.Context; 26 import android.content.Intent; 27 import android.os.Bundle; 28 import android.os.UserManager; 29 import android.view.Menu; 30 import android.view.MenuInflater; 31 32 import androidx.annotation.VisibleForTesting; 33 34 import com.android.car.developeroptions.R; 35 import com.android.settingslib.bluetooth.CachedBluetoothDevice; 36 import com.android.settingslib.core.AbstractPreferenceController; 37 38 import java.util.List; 39 40 /** 41 * BluetoothSettings is the Settings screen for Bluetooth configuration and 42 * connection management. 43 */ 44 public final class DevicePickerFragment extends DeviceListPreferenceFragment { 45 private static final String KEY_BT_DEVICE_LIST = "bt_device_list"; 46 private static final String TAG = "DevicePickerFragment"; 47 48 @VisibleForTesting 49 BluetoothProgressCategory mAvailableDevicesCategory; 50 51 private boolean mNeedAuth; 52 private String mLaunchPackage; 53 private String mLaunchClass; 54 private boolean mScanAllowed; 55 DevicePickerFragment()56 public DevicePickerFragment() { 57 super(null /* Not tied to any user restrictions. */); 58 } 59 60 @Override initPreferencesFromPreferenceScreen()61 void initPreferencesFromPreferenceScreen() { 62 Intent intent = getActivity().getIntent(); 63 mNeedAuth = intent.getBooleanExtra(BluetoothDevicePicker.EXTRA_NEED_AUTH, false); 64 setFilter(intent.getIntExtra(BluetoothDevicePicker.EXTRA_FILTER_TYPE, 65 BluetoothDevicePicker.FILTER_TYPE_ALL)); 66 mLaunchPackage = intent.getStringExtra(BluetoothDevicePicker.EXTRA_LAUNCH_PACKAGE); 67 mLaunchClass = intent.getStringExtra(BluetoothDevicePicker.EXTRA_LAUNCH_CLASS); 68 mAvailableDevicesCategory = (BluetoothProgressCategory) findPreference(KEY_BT_DEVICE_LIST); 69 } 70 71 @Override onCreateOptionsMenu(Menu menu, MenuInflater inflater)72 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 73 super.onCreateOptionsMenu(menu, inflater); 74 } 75 76 @Override getMetricsCategory()77 public int getMetricsCategory() { 78 return SettingsEnums.BLUETOOTH_DEVICE_PICKER; 79 } 80 81 @Override onCreate(Bundle savedInstanceState)82 public void onCreate(Bundle savedInstanceState) { 83 super.onCreate(savedInstanceState); 84 getActivity().setTitle(getString(R.string.device_picker)); 85 UserManager um = (UserManager) getSystemService(Context.USER_SERVICE); 86 mScanAllowed = !um.hasUserRestriction(DISALLOW_CONFIG_BLUETOOTH); 87 setHasOptionsMenu(true); 88 } 89 90 @Override onStart()91 public void onStart() { 92 super.onStart(); 93 addCachedDevices(); 94 mSelectedDevice = null; 95 if (mScanAllowed) { 96 enableScanning(); 97 mAvailableDevicesCategory.setProgress(mBluetoothAdapter.isDiscovering()); 98 } 99 } 100 101 @Override onStop()102 public void onStop() { 103 // Try disable scanning no matter what, no effect if enableScanning has not been called 104 disableScanning(); 105 super.onStop(); 106 } 107 108 @Override onDestroy()109 public void onDestroy() { 110 super.onDestroy(); 111 /* Check if any device was selected, if no device selected 112 * send ACTION_DEVICE_SELECTED with a null device, otherwise 113 * don't do anything */ 114 if (mSelectedDevice == null) { 115 sendDevicePickedIntent(null); 116 } 117 } 118 119 @Override onDevicePreferenceClick(BluetoothDevicePreference btPreference)120 void onDevicePreferenceClick(BluetoothDevicePreference btPreference) { 121 disableScanning(); 122 LocalBluetoothPreferences.persistSelectedDeviceInPicker( 123 getActivity(), mSelectedDevice.getAddress()); 124 if ((btPreference.getCachedDevice().getBondState() == 125 BluetoothDevice.BOND_BONDED) || !mNeedAuth) { 126 sendDevicePickedIntent(mSelectedDevice); 127 finish(); 128 } else { 129 super.onDevicePreferenceClick(btPreference); 130 } 131 } 132 133 @Override onScanningStateChanged(boolean started)134 public void onScanningStateChanged(boolean started) { 135 super.onScanningStateChanged(started); 136 started |= mScanEnabled; 137 mAvailableDevicesCategory.setProgress(started); 138 } 139 onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState)140 public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, 141 int bondState) { 142 BluetoothDevice device = cachedDevice.getDevice(); 143 if (!device.equals(mSelectedDevice)) { 144 return; 145 } 146 if (bondState == BluetoothDevice.BOND_BONDED) { 147 sendDevicePickedIntent(device); 148 finish(); 149 } else if (bondState == BluetoothDevice.BOND_NONE) { 150 enableScanning(); 151 } 152 } 153 154 @Override initDevicePreference(BluetoothDevicePreference preference)155 protected void initDevicePreference(BluetoothDevicePreference preference) { 156 super.initDevicePreference(preference); 157 preference.setNeedNotifyHierarchyChanged(true); 158 } 159 160 @Override onBluetoothStateChanged(int bluetoothState)161 public void onBluetoothStateChanged(int bluetoothState) { 162 super.onBluetoothStateChanged(bluetoothState); 163 164 if (bluetoothState == BluetoothAdapter.STATE_ON) { 165 enableScanning(); 166 } 167 } 168 169 @Override getLogTag()170 protected String getLogTag() { 171 return TAG; 172 } 173 174 @Override getPreferenceScreenResId()175 protected int getPreferenceScreenResId() { 176 return R.xml.device_picker; 177 } 178 179 @Override createPreferenceControllers(Context context)180 protected List<AbstractPreferenceController> createPreferenceControllers(Context context) { 181 return null; 182 } 183 184 @Override getDeviceListKey()185 public String getDeviceListKey() { 186 return KEY_BT_DEVICE_LIST; 187 } 188 sendDevicePickedIntent(BluetoothDevice device)189 private void sendDevicePickedIntent(BluetoothDevice device) { 190 Intent intent = new Intent(BluetoothDevicePicker.ACTION_DEVICE_SELECTED); 191 intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device); 192 if (mLaunchPackage != null && mLaunchClass != null) { 193 intent.setClassName(mLaunchPackage, mLaunchClass); 194 } 195 getActivity().sendBroadcast(intent); 196 } 197 } 198