/* * Copyright (C) 2008 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.settingslib.bluetooth; import android.bluetooth.BluetoothClass; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothProfile; import android.bluetooth.BluetoothUuid; import android.content.Context; import android.content.SharedPreferences; import android.os.ParcelUuid; import android.os.SystemClock; import android.text.TextUtils; import android.util.Log; import android.bluetooth.BluetoothAdapter; import com.android.settingslib.R; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.HashMap; import java.util.List; /** * CachedBluetoothDevice represents a remote Bluetooth device. It contains * attributes of the device (such as the address, name, RSSI, etc.) and * functionality that can be performed on the device (connect, pair, disconnect, * etc.). */ public final class CachedBluetoothDevice implements Comparable<CachedBluetoothDevice> { private static final String TAG = "CachedBluetoothDevice"; private static final boolean DEBUG = Utils.V; private final Context mContext; private final LocalBluetoothAdapter mLocalAdapter; private final LocalBluetoothProfileManager mProfileManager; private final BluetoothDevice mDevice; private String mName; private short mRssi; private BluetoothClass mBtClass; private HashMap<LocalBluetoothProfile, Integer> mProfileConnectionState; private final List<LocalBluetoothProfile> mProfiles = new ArrayList<LocalBluetoothProfile>(); // List of profiles that were previously in mProfiles, but have been removed private final List<LocalBluetoothProfile> mRemovedProfiles = new ArrayList<LocalBluetoothProfile>(); // Device supports PANU but not NAP: remove PanProfile after device disconnects from NAP private boolean mLocalNapRoleConnected; private boolean mVisible; private int mMessageRejectionCount; private final Collection<Callback> mCallbacks = new ArrayList<Callback>(); // Following constants indicate the user's choices of Phone book/message access settings // User hasn't made any choice or settings app has wiped out the memory public final static int ACCESS_UNKNOWN = 0; // User has accepted the connection and let Settings app remember the decision public final static int ACCESS_ALLOWED = 1; // User has rejected the connection and let Settings app remember the decision public final static int ACCESS_REJECTED = 2; // How many times user should reject the connection to make the choice persist. private final static int MESSAGE_REJECTION_COUNT_LIMIT_TO_PERSIST = 2; private final static String MESSAGE_REJECTION_COUNT_PREFS_NAME = "bluetooth_message_reject"; /** * When we connect to multiple profiles, we only want to display a single * error even if they all fail. This tracks that state. */ private boolean mIsConnectingErrorPossible; /** * Last time a bt profile auto-connect was attempted. * If an ACTION_UUID intent comes in within * MAX_UUID_DELAY_FOR_AUTO_CONNECT milliseconds, we will try auto-connect * again with the new UUIDs */ private long mConnectAttempted; // See mConnectAttempted private static final long MAX_UUID_DELAY_FOR_AUTO_CONNECT = 5000; private static final long MAX_HOGP_DELAY_FOR_AUTO_CONNECT = 30000; /** Auto-connect after pairing only if locally initiated. */ private boolean mConnectAfterPairing; /** * Describes the current device and profile for logging. * * @param profile Profile to describe * @return Description of the device and profile */ private String describe(LocalBluetoothProfile profile) { StringBuilder sb = new StringBuilder(); sb.append("Address:").append(mDevice); if (profile != null) { sb.append(" Profile:").append(profile); } return sb.toString(); } void onProfileStateChanged(LocalBluetoothProfile profile, int newProfileState) { if (Utils.D) { Log.d(TAG, "onProfileStateChanged: profile " + profile + " newProfileState " + newProfileState); } if (mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_TURNING_OFF) { if (Utils.D) Log.d(TAG, " BT Turninig Off...Profile conn state change ignored..."); return; } mProfileConnectionState.put(profile, newProfileState); if (newProfileState == BluetoothProfile.STATE_CONNECTED) { if (profile instanceof MapProfile) { profile.setPreferred(mDevice, true); } else if (!mProfiles.contains(profile)) { mRemovedProfiles.remove(profile); mProfiles.add(profile); if (profile instanceof PanProfile && ((PanProfile) profile).isLocalRoleNap(mDevice)) { // Device doesn't support NAP, so remove PanProfile on disconnect mLocalNapRoleConnected = true; } } } else if (profile instanceof MapProfile && newProfileState == BluetoothProfile.STATE_DISCONNECTED) { profile.setPreferred(mDevice, false); } else if (mLocalNapRoleConnected && profile instanceof PanProfile && ((PanProfile) profile).isLocalRoleNap(mDevice) && newProfileState == BluetoothProfile.STATE_DISCONNECTED) { Log.d(TAG, "Removing PanProfile from device after NAP disconnect"); mProfiles.remove(profile); mRemovedProfiles.add(profile); mLocalNapRoleConnected = false; } } CachedBluetoothDevice(Context context, LocalBluetoothAdapter adapter, LocalBluetoothProfileManager profileManager, BluetoothDevice device) { mContext = context; mLocalAdapter = adapter; mProfileManager = profileManager; mDevice = device; mProfileConnectionState = new HashMap<LocalBluetoothProfile, Integer>(); fillData(); } public void disconnect() { for (LocalBluetoothProfile profile : mProfiles) { disconnect(profile); } // Disconnect PBAP server in case its connected // This is to ensure all the profiles are disconnected as some CK/Hs do not // disconnect PBAP connection when HF connection is brought down PbapServerProfile PbapProfile = mProfileManager.getPbapProfile(); if (PbapProfile.getConnectionStatus(mDevice) == BluetoothProfile.STATE_CONNECTED) { PbapProfile.disconnect(mDevice); } } public void disconnect(LocalBluetoothProfile profile) { if (profile.disconnect(mDevice)) { if (Utils.D) { Log.d(TAG, "Command sent successfully:DISCONNECT " + describe(profile)); } } } public void connect(boolean connectAllProfiles) { if (!ensurePaired()) { return; } mConnectAttempted = SystemClock.elapsedRealtime(); connectWithoutResettingTimer(connectAllProfiles); } void onBondingDockConnect() { // Attempt to connect if UUIDs are available. Otherwise, // we will connect when the ACTION_UUID intent arrives. connect(false); } private void connectWithoutResettingTimer(boolean connectAllProfiles) { // Try to initialize the profiles if they were not. if (mProfiles.isEmpty()) { // if mProfiles is empty, then do not invoke updateProfiles. This causes a race // condition with carkits during pairing, wherein RemoteDevice.UUIDs have been updated // from bluetooth stack but ACTION.uuid is not sent yet. // Eventually ACTION.uuid will be received which shall trigger the connection of the // various profiles // If UUIDs are not available yet, connect will be happen // upon arrival of the ACTION_UUID intent. Log.d(TAG, "No profiles. Maybe we will connect later"); return; } // Reset the only-show-one-error-dialog tracking variable mIsConnectingErrorPossible = true; int preferredProfiles = 0; for (LocalBluetoothProfile profile : mProfiles) { if (connectAllProfiles ? profile.isConnectable() : profile.isAutoConnectable()) { if (profile.isPreferred(mDevice)) { ++preferredProfiles; connectInt(profile); } } } if (DEBUG) Log.d(TAG, "Preferred profiles = " + preferredProfiles); if (preferredProfiles == 0) { connectAutoConnectableProfiles(); } } private void connectAutoConnectableProfiles() { if (!ensurePaired()) { return; } // Reset the only-show-one-error-dialog tracking variable mIsConnectingErrorPossible = true; for (LocalBluetoothProfile profile : mProfiles) { if (profile.isAutoConnectable()) { profile.setPreferred(mDevice, true); connectInt(profile); } } } /** * Connect this device to the specified profile. * * @param profile the profile to use with the remote device */ public void connectProfile(LocalBluetoothProfile profile) { mConnectAttempted = SystemClock.elapsedRealtime(); // Reset the only-show-one-error-dialog tracking variable mIsConnectingErrorPossible = true; connectInt(profile); // Refresh the UI based on profile.connect() call refresh(); } synchronized void connectInt(LocalBluetoothProfile profile) { if (!ensurePaired()) { return; } if (profile.connect(mDevice)) { if (Utils.D) { Log.d(TAG, "Command sent successfully:CONNECT " + describe(profile)); } return; } Log.i(TAG, "Failed to connect " + profile.toString() + " to " + mName); } private boolean ensurePaired() { if (getBondState() == BluetoothDevice.BOND_NONE) { startPairing(); return false; } else { return true; } } public boolean startPairing() { // Pairing is unreliable while scanning, so cancel discovery if (mLocalAdapter.isDiscovering()) { mLocalAdapter.cancelDiscovery(); } if (!mDevice.createBond()) { return false; } mConnectAfterPairing = true; // auto-connect after pairing return true; } /** * Return true if user initiated pairing on this device. The message text is * slightly different for local vs. remote initiated pairing dialogs. */ boolean isUserInitiatedPairing() { return mConnectAfterPairing; } public void unpair() { int state = getBondState(); if (state == BluetoothDevice.BOND_BONDING) { mDevice.cancelBondProcess(); } if (state != BluetoothDevice.BOND_NONE) { final BluetoothDevice dev = mDevice; if (dev != null) { final boolean successful = dev.removeBond(); if (successful) { if (Utils.D) { Log.d(TAG, "Command sent successfully:REMOVE_BOND " + describe(null)); } } else if (Utils.V) { Log.v(TAG, "Framework rejected command immediately:REMOVE_BOND " + describe(null)); } } } } public int getProfileConnectionState(LocalBluetoothProfile profile) { if (mProfileConnectionState == null || mProfileConnectionState.get(profile) == null) { // If cache is empty make the binder call to get the state int state = profile.getConnectionStatus(mDevice); mProfileConnectionState.put(profile, state); } return mProfileConnectionState.get(profile); } public void clearProfileConnectionState () { if (Utils.D) { Log.d(TAG," Clearing all connection state for dev:" + mDevice.getName()); } for (LocalBluetoothProfile profile :getProfiles()) { mProfileConnectionState.put(profile, BluetoothProfile.STATE_DISCONNECTED); } } // TODO: do any of these need to run async on a background thread? private void fillData() { fetchName(); fetchBtClass(); updateProfiles(); migratePhonebookPermissionChoice(); migrateMessagePermissionChoice(); fetchMessageRejectionCount(); mVisible = false; dispatchAttributesChanged(); } public BluetoothDevice getDevice() { return mDevice; } public String getName() { return mName; } /** * Populate name from BluetoothDevice.ACTION_FOUND intent */ void setNewName(String name) { if (mName == null) { mName = name; if (mName == null || TextUtils.isEmpty(mName)) { mName = mDevice.getAddress(); } dispatchAttributesChanged(); } } /** * user changes the device name */ public void setName(String name) { if (!mName.equals(name)) { mName = name; mDevice.setAlias(name); dispatchAttributesChanged(); } } void refreshName() { fetchName(); dispatchAttributesChanged(); } private void fetchName() { mName = mDevice.getAliasName(); if (TextUtils.isEmpty(mName)) { mName = mDevice.getAddress(); if (DEBUG) Log.d(TAG, "Device has no name (yet), use address: " + mName); } } void refresh() { dispatchAttributesChanged(); } public boolean isVisible() { return mVisible; } public void setVisible(boolean visible) { if (mVisible != visible) { mVisible = visible; dispatchAttributesChanged(); } } public int getBondState() { return mDevice.getBondState(); } void setRssi(short rssi) { if (mRssi != rssi) { mRssi = rssi; dispatchAttributesChanged(); } } /** * Checks whether we are connected to this device (any profile counts). * * @return Whether it is connected. */ public boolean isConnected() { for (LocalBluetoothProfile profile : mProfiles) { int status = getProfileConnectionState(profile); if (status == BluetoothProfile.STATE_CONNECTED) { return true; } } return false; } public boolean isConnectedProfile(LocalBluetoothProfile profile) { int status = getProfileConnectionState(profile); return status == BluetoothProfile.STATE_CONNECTED; } public boolean isBusy() { for (LocalBluetoothProfile profile : mProfiles) { int status = getProfileConnectionState(profile); if (status == BluetoothProfile.STATE_CONNECTING || status == BluetoothProfile.STATE_DISCONNECTING) { return true; } } return getBondState() == BluetoothDevice.BOND_BONDING; } /** * Fetches a new value for the cached BT class. */ private void fetchBtClass() { mBtClass = mDevice.getBluetoothClass(); } private boolean updateProfiles() { ParcelUuid[] uuids = mDevice.getUuids(); if (uuids == null) return false; ParcelUuid[] localUuids = mLocalAdapter.getUuids(); if (localUuids == null) return false; /** * Now we know if the device supports PBAP, update permissions... */ processPhonebookAccess(); mProfileManager.updateProfiles(uuids, localUuids, mProfiles, mRemovedProfiles, mLocalNapRoleConnected, mDevice); if (DEBUG) { Log.e(TAG, "updating profiles for " + mDevice.getAliasName()); BluetoothClass bluetoothClass = mDevice.getBluetoothClass(); if (bluetoothClass != null) Log.v(TAG, "Class: " + bluetoothClass.toString()); Log.v(TAG, "UUID:"); for (ParcelUuid uuid : uuids) { Log.v(TAG, " " + uuid); } } return true; } /** * Refreshes the UI for the BT class, including fetching the latest value * for the class. */ void refreshBtClass() { fetchBtClass(); dispatchAttributesChanged(); } /** * Refreshes the UI when framework alerts us of a UUID change. */ void onUuidChanged() { updateProfiles(); ParcelUuid[] uuids = mDevice.getUuids(); long timeout = MAX_UUID_DELAY_FOR_AUTO_CONNECT; if (BluetoothUuid.isUuidPresent(uuids, BluetoothUuid.Hogp)) { timeout = MAX_HOGP_DELAY_FOR_AUTO_CONNECT; } if (DEBUG) { Log.d(TAG, "onUuidChanged: Time since last connect" + (SystemClock.elapsedRealtime() - mConnectAttempted)); } /* * If a connect was attempted earlier without any UUID, we will do the connect now. * Otherwise, allow the connect on UUID change. */ if (!mProfiles.isEmpty() && ((mConnectAttempted + timeout) > SystemClock.elapsedRealtime() || (mConnectAttempted == 0))) { connectWithoutResettingTimer(false); } dispatchAttributesChanged(); } void onBondingStateChanged(int bondState) { if (bondState == BluetoothDevice.BOND_NONE) { mProfiles.clear(); mConnectAfterPairing = false; // cancel auto-connect setPhonebookPermissionChoice(ACCESS_UNKNOWN); setMessagePermissionChoice(ACCESS_UNKNOWN); setSimPermissionChoice(ACCESS_UNKNOWN); mMessageRejectionCount = 0; saveMessageRejectionCount(); } refresh(); if (bondState == BluetoothDevice.BOND_BONDED) { if (mDevice.isBluetoothDock()) { onBondingDockConnect(); } else if (mConnectAfterPairing) { connect(false); } mConnectAfterPairing = false; } } void setBtClass(BluetoothClass btClass) { if (btClass != null && mBtClass != btClass) { mBtClass = btClass; dispatchAttributesChanged(); } } public BluetoothClass getBtClass() { return mBtClass; } public List<LocalBluetoothProfile> getProfiles() { return Collections.unmodifiableList(mProfiles); } public List<LocalBluetoothProfile> getConnectableProfiles() { List<LocalBluetoothProfile> connectableProfiles = new ArrayList<LocalBluetoothProfile>(); for (LocalBluetoothProfile profile : mProfiles) { if (profile.isConnectable()) { connectableProfiles.add(profile); } } return connectableProfiles; } public List<LocalBluetoothProfile> getRemovedProfiles() { return mRemovedProfiles; } public void registerCallback(Callback callback) { synchronized (mCallbacks) { mCallbacks.add(callback); } } public void unregisterCallback(Callback callback) { synchronized (mCallbacks) { mCallbacks.remove(callback); } } private void dispatchAttributesChanged() { synchronized (mCallbacks) { for (Callback callback : mCallbacks) { callback.onDeviceAttributesChanged(); } } } @Override public String toString() { return mDevice.toString(); } @Override public boolean equals(Object o) { if ((o == null) || !(o instanceof CachedBluetoothDevice)) { return false; } return mDevice.equals(((CachedBluetoothDevice) o).mDevice); } @Override public int hashCode() { return mDevice.getAddress().hashCode(); } // This comparison uses non-final fields so the sort order may change // when device attributes change (such as bonding state). Settings // will completely refresh the device list when this happens. public int compareTo(CachedBluetoothDevice another) { // Connected above not connected int comparison = (another.isConnected() ? 1 : 0) - (isConnected() ? 1 : 0); if (comparison != 0) return comparison; // Paired above not paired comparison = (another.getBondState() == BluetoothDevice.BOND_BONDED ? 1 : 0) - (getBondState() == BluetoothDevice.BOND_BONDED ? 1 : 0); if (comparison != 0) return comparison; // Visible above not visible comparison = (another.mVisible ? 1 : 0) - (mVisible ? 1 : 0); if (comparison != 0) return comparison; // Stronger signal above weaker signal comparison = another.mRssi - mRssi; if (comparison != 0) return comparison; // Fallback on name return mName.compareTo(another.mName); } public interface Callback { void onDeviceAttributesChanged(); } public int getPhonebookPermissionChoice() { int permission = mDevice.getPhonebookAccessPermission(); if (permission == BluetoothDevice.ACCESS_ALLOWED) { return ACCESS_ALLOWED; } else if (permission == BluetoothDevice.ACCESS_REJECTED) { return ACCESS_REJECTED; } return ACCESS_UNKNOWN; } public void setPhonebookPermissionChoice(int permissionChoice) { int permission = BluetoothDevice.ACCESS_UNKNOWN; if (permissionChoice == ACCESS_ALLOWED) { permission = BluetoothDevice.ACCESS_ALLOWED; } else if (permissionChoice == ACCESS_REJECTED) { permission = BluetoothDevice.ACCESS_REJECTED; } mDevice.setPhonebookAccessPermission(permission); } // Migrates data from old data store (in Settings app's shared preferences) to new (in Bluetooth // app's shared preferences). private void migratePhonebookPermissionChoice() { SharedPreferences preferences = mContext.getSharedPreferences( "bluetooth_phonebook_permission", Context.MODE_PRIVATE); if (!preferences.contains(mDevice.getAddress())) { return; } if (mDevice.getPhonebookAccessPermission() == BluetoothDevice.ACCESS_UNKNOWN) { int oldPermission = preferences.getInt(mDevice.getAddress(), ACCESS_UNKNOWN); if (oldPermission == ACCESS_ALLOWED) { mDevice.setPhonebookAccessPermission(BluetoothDevice.ACCESS_ALLOWED); } else if (oldPermission == ACCESS_REJECTED) { mDevice.setPhonebookAccessPermission(BluetoothDevice.ACCESS_REJECTED); } } SharedPreferences.Editor editor = preferences.edit(); editor.remove(mDevice.getAddress()); editor.commit(); } public int getMessagePermissionChoice() { int permission = mDevice.getMessageAccessPermission(); if (permission == BluetoothDevice.ACCESS_ALLOWED) { return ACCESS_ALLOWED; } else if (permission == BluetoothDevice.ACCESS_REJECTED) { return ACCESS_REJECTED; } return ACCESS_UNKNOWN; } public void setMessagePermissionChoice(int permissionChoice) { int permission = BluetoothDevice.ACCESS_UNKNOWN; if (permissionChoice == ACCESS_ALLOWED) { permission = BluetoothDevice.ACCESS_ALLOWED; } else if (permissionChoice == ACCESS_REJECTED) { permission = BluetoothDevice.ACCESS_REJECTED; } mDevice.setMessageAccessPermission(permission); } public int getSimPermissionChoice() { int permission = mDevice.getSimAccessPermission(); if (permission == BluetoothDevice.ACCESS_ALLOWED) { return ACCESS_ALLOWED; } else if (permission == BluetoothDevice.ACCESS_REJECTED) { return ACCESS_REJECTED; } return ACCESS_UNKNOWN; } void setSimPermissionChoice(int permissionChoice) { int permission = BluetoothDevice.ACCESS_UNKNOWN; if (permissionChoice == ACCESS_ALLOWED) { permission = BluetoothDevice.ACCESS_ALLOWED; } else if (permissionChoice == ACCESS_REJECTED) { permission = BluetoothDevice.ACCESS_REJECTED; } mDevice.setSimAccessPermission(permission); } // Migrates data from old data store (in Settings app's shared preferences) to new (in Bluetooth // app's shared preferences). private void migrateMessagePermissionChoice() { SharedPreferences preferences = mContext.getSharedPreferences( "bluetooth_message_permission", Context.MODE_PRIVATE); if (!preferences.contains(mDevice.getAddress())) { return; } if (mDevice.getMessageAccessPermission() == BluetoothDevice.ACCESS_UNKNOWN) { int oldPermission = preferences.getInt(mDevice.getAddress(), ACCESS_UNKNOWN); if (oldPermission == ACCESS_ALLOWED) { mDevice.setMessageAccessPermission(BluetoothDevice.ACCESS_ALLOWED); } else if (oldPermission == ACCESS_REJECTED) { mDevice.setMessageAccessPermission(BluetoothDevice.ACCESS_REJECTED); } } SharedPreferences.Editor editor = preferences.edit(); editor.remove(mDevice.getAddress()); editor.commit(); } /** * @return Whether this rejection should persist. */ public boolean checkAndIncreaseMessageRejectionCount() { if (mMessageRejectionCount < MESSAGE_REJECTION_COUNT_LIMIT_TO_PERSIST) { mMessageRejectionCount++; saveMessageRejectionCount(); } return mMessageRejectionCount >= MESSAGE_REJECTION_COUNT_LIMIT_TO_PERSIST; } private void fetchMessageRejectionCount() { SharedPreferences preference = mContext.getSharedPreferences( MESSAGE_REJECTION_COUNT_PREFS_NAME, Context.MODE_PRIVATE); mMessageRejectionCount = preference.getInt(mDevice.getAddress(), 0); } private void saveMessageRejectionCount() { SharedPreferences.Editor editor = mContext.getSharedPreferences( MESSAGE_REJECTION_COUNT_PREFS_NAME, Context.MODE_PRIVATE).edit(); if (mMessageRejectionCount == 0) { editor.remove(mDevice.getAddress()); } else { editor.putInt(mDevice.getAddress(), mMessageRejectionCount); } editor.commit(); } private void processPhonebookAccess() { if (mDevice.getBondState() != BluetoothDevice.BOND_BONDED) return; ParcelUuid[] uuids = mDevice.getUuids(); if (BluetoothUuid.containsAnyUuid(uuids, PbapServerProfile.PBAB_CLIENT_UUIDS)) { // The pairing dialog now warns of phone-book access for paired devices. // No separate prompt is displayed after pairing. if (getPhonebookPermissionChoice() == CachedBluetoothDevice.ACCESS_UNKNOWN) { setPhonebookPermissionChoice(CachedBluetoothDevice.ACCESS_ALLOWED); } } } public int getMaxConnectionState() { int maxState = BluetoothProfile.STATE_DISCONNECTED; for (LocalBluetoothProfile profile : getProfiles()) { int connectionStatus = getProfileConnectionState(profile); if (connectionStatus > maxState) { maxState = connectionStatus; } } return maxState; } /** * @return resource for string that discribes the connection state of this device. */ public int getConnectionSummary() { boolean profileConnected = false; // at least one profile is connected boolean a2dpNotConnected = false; // A2DP is preferred but not connected boolean headsetNotConnected = false; // Headset is preferred but not connected for (LocalBluetoothProfile profile : getProfiles()) { int connectionStatus = getProfileConnectionState(profile); switch (connectionStatus) { case BluetoothProfile.STATE_CONNECTING: case BluetoothProfile.STATE_DISCONNECTING: return Utils.getConnectionStateSummary(connectionStatus); case BluetoothProfile.STATE_CONNECTED: profileConnected = true; break; case BluetoothProfile.STATE_DISCONNECTED: if (profile.isProfileReady()) { if (profile instanceof A2dpProfile) { a2dpNotConnected = true; } else if (profile instanceof HeadsetProfile) { headsetNotConnected = true; } } break; } } if (profileConnected) { if (a2dpNotConnected && headsetNotConnected) { return R.string.bluetooth_connected_no_headset_no_a2dp; } else if (a2dpNotConnected) { return R.string.bluetooth_connected_no_a2dp; } else if (headsetNotConnected) { return R.string.bluetooth_connected_no_headset; } else { return R.string.bluetooth_connected; } } return getBondState() == BluetoothDevice.BOND_BONDING ? R.string.bluetooth_pairing : 0; } }