1 /* 2 * Copyright (C) 2011 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.bluetooth; 18 19 import android.bluetooth.BluetoothAdapter; 20 import android.bluetooth.BluetoothDevice; 21 import android.bluetooth.BluetoothDevicePicker; 22 import android.content.Context; 23 import android.content.Intent; 24 import android.os.Bundle; 25 import android.os.UserManager; 26 import android.view.Menu; 27 import android.view.MenuInflater; 28 import android.view.MenuItem; 29 30 import com.android.internal.logging.MetricsProto.MetricsEvent; 31 import com.android.settings.R; 32 import com.android.settingslib.bluetooth.CachedBluetoothDevice; 33 34 import static android.os.UserManager.DISALLOW_CONFIG_BLUETOOTH; 35 36 /** 37 * BluetoothSettings is the Settings screen for Bluetooth configuration and 38 * connection management. 39 */ 40 public final class DevicePickerFragment extends DeviceListPreferenceFragment { 41 private static final int MENU_ID_REFRESH = Menu.FIRST; 42 DevicePickerFragment()43 public DevicePickerFragment() { 44 super(null /* Not tied to any user restrictions. */); 45 } 46 47 private boolean mNeedAuth; 48 private String mLaunchPackage; 49 private String mLaunchClass; 50 private boolean mStartScanOnResume; 51 52 @Override addPreferencesForActivity()53 void addPreferencesForActivity() { 54 addPreferencesFromResource(R.xml.device_picker); 55 56 Intent intent = getActivity().getIntent(); 57 mNeedAuth = intent.getBooleanExtra(BluetoothDevicePicker.EXTRA_NEED_AUTH, false); 58 setFilter(intent.getIntExtra(BluetoothDevicePicker.EXTRA_FILTER_TYPE, 59 BluetoothDevicePicker.FILTER_TYPE_ALL)); 60 mLaunchPackage = intent.getStringExtra(BluetoothDevicePicker.EXTRA_LAUNCH_PACKAGE); 61 mLaunchClass = intent.getStringExtra(BluetoothDevicePicker.EXTRA_LAUNCH_CLASS); 62 } 63 64 @Override initDevicePreference(BluetoothDevicePreference preference)65 void initDevicePreference(BluetoothDevicePreference preference) { 66 preference.setWidgetLayoutResource(R.layout.preference_empty_list); 67 } 68 69 @Override onCreateOptionsMenu(Menu menu, MenuInflater inflater)70 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 71 menu.add(Menu.NONE, MENU_ID_REFRESH, 0, R.string.bluetooth_search_for_devices) 72 .setEnabled(true) 73 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 74 super.onCreateOptionsMenu(menu, inflater); 75 } 76 77 @Override onOptionsItemSelected(MenuItem item)78 public boolean onOptionsItemSelected(MenuItem item) { 79 switch (item.getItemId()) { 80 case MENU_ID_REFRESH: 81 mLocalAdapter.startScanning(true); 82 return true; 83 } 84 return super.onOptionsItemSelected(item); 85 } 86 87 @Override getMetricsCategory()88 protected int getMetricsCategory() { 89 return MetricsEvent.BLUETOOTH_DEVICE_PICKER; 90 } 91 92 @Override onCreate(Bundle savedInstanceState)93 public void onCreate(Bundle savedInstanceState) { 94 super.onCreate(savedInstanceState); 95 getActivity().setTitle(getString(R.string.device_picker)); 96 UserManager um = (UserManager) getSystemService(Context.USER_SERVICE); 97 mStartScanOnResume = !um.hasUserRestriction(DISALLOW_CONFIG_BLUETOOTH) 98 && (savedInstanceState == null); // don't start scan after rotation 99 setHasOptionsMenu(true); 100 } 101 102 @Override onResume()103 public void onResume() { 104 super.onResume(); 105 addCachedDevices(); 106 if (mStartScanOnResume) { 107 mLocalAdapter.startScanning(true); 108 mStartScanOnResume = false; 109 } 110 } 111 112 @Override onDevicePreferenceClick(BluetoothDevicePreference btPreference)113 void onDevicePreferenceClick(BluetoothDevicePreference btPreference) { 114 mLocalAdapter.stopScanning(); 115 LocalBluetoothPreferences.persistSelectedDeviceInPicker( 116 getActivity(), mSelectedDevice.getAddress()); 117 if ((btPreference.getCachedDevice().getBondState() == 118 BluetoothDevice.BOND_BONDED) || !mNeedAuth) { 119 sendDevicePickedIntent(mSelectedDevice); 120 finish(); 121 } else { 122 super.onDevicePreferenceClick(btPreference); 123 } 124 } 125 onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState)126 public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, 127 int bondState) { 128 if (bondState == BluetoothDevice.BOND_BONDED) { 129 BluetoothDevice device = cachedDevice.getDevice(); 130 if (device.equals(mSelectedDevice)) { 131 sendDevicePickedIntent(device); 132 finish(); 133 } 134 } 135 } 136 137 @Override onBluetoothStateChanged(int bluetoothState)138 public void onBluetoothStateChanged(int bluetoothState) { 139 super.onBluetoothStateChanged(bluetoothState); 140 141 if (bluetoothState == BluetoothAdapter.STATE_ON) { 142 mLocalAdapter.startScanning(false); 143 } 144 } 145 sendDevicePickedIntent(BluetoothDevice device)146 private void sendDevicePickedIntent(BluetoothDevice device) { 147 Intent intent = new Intent(BluetoothDevicePicker.ACTION_DEVICE_SELECTED); 148 intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device); 149 if (mLaunchPackage != null && mLaunchClass != null) { 150 intent.setClassName(mLaunchPackage, mLaunchClass); 151 } 152 getActivity().sendBroadcast(intent); 153 } 154 } 155