| /* |
| * Copyright (C) 2015 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.systemui.keyboard; |
| |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothDevice; |
| import android.bluetooth.le.BluetoothLeScanner; |
| import android.bluetooth.le.ScanCallback; |
| import android.bluetooth.le.ScanFilter; |
| import android.bluetooth.le.ScanRecord; |
| import android.bluetooth.le.ScanResult; |
| import android.bluetooth.le.ScanSettings; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.res.Configuration; |
| import android.hardware.input.InputManager; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.Process; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.provider.Settings.Secure; |
| import android.text.TextUtils; |
| import android.util.Pair; |
| import android.util.Slog; |
| import android.widget.Toast; |
| |
| import com.android.settingslib.bluetooth.BluetoothCallback; |
| import com.android.settingslib.bluetooth.BluetoothUtils; |
| import com.android.settingslib.bluetooth.CachedBluetoothDevice; |
| import com.android.settingslib.bluetooth.CachedBluetoothDeviceManager; |
| import com.android.settingslib.bluetooth.LocalBluetoothAdapter; |
| import com.android.settingslib.bluetooth.LocalBluetoothManager; |
| import com.android.settingslib.bluetooth.LocalBluetoothProfileManager; |
| import com.android.systemui.Dependency; |
| import com.android.systemui.R; |
| import com.android.systemui.SystemUI; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Set; |
| |
| public class KeyboardUI extends SystemUI implements InputManager.OnTabletModeChangedListener { |
| private static final String TAG = "KeyboardUI"; |
| private static final boolean DEBUG = false; |
| |
| // Give BT some time to start after SyUI comes up. This avoids flashing a dialog in the user's |
| // face because BT starts a little bit later in the boot process than SysUI and it takes some |
| // time for us to receive the signal that it's starting. |
| private static final long BLUETOOTH_START_DELAY_MILLIS = 10 * 1000; |
| |
| // We will be scanning up to 30 seconds, after which we'll stop. |
| private static final long BLUETOOTH_SCAN_TIMEOUT_MILLIS = 30 * 1000; |
| |
| private static final int STATE_NOT_ENABLED = -1; |
| private static final int STATE_UNKNOWN = 0; |
| private static final int STATE_WAITING_FOR_BOOT_COMPLETED = 1; |
| private static final int STATE_WAITING_FOR_TABLET_MODE_EXIT = 2; |
| private static final int STATE_WAITING_FOR_DEVICE_DISCOVERY = 3; |
| private static final int STATE_WAITING_FOR_BLUETOOTH = 4; |
| private static final int STATE_PAIRING = 5; |
| private static final int STATE_PAIRED = 6; |
| private static final int STATE_PAIRING_FAILED = 7; |
| private static final int STATE_USER_CANCELLED = 8; |
| private static final int STATE_DEVICE_NOT_FOUND = 9; |
| |
| private static final int MSG_INIT = 0; |
| private static final int MSG_ON_BOOT_COMPLETED = 1; |
| private static final int MSG_PROCESS_KEYBOARD_STATE = 2; |
| private static final int MSG_ENABLE_BLUETOOTH = 3; |
| private static final int MSG_ON_BLUETOOTH_STATE_CHANGED = 4; |
| private static final int MSG_ON_DEVICE_BOND_STATE_CHANGED = 5; |
| private static final int MSG_ON_BLUETOOTH_DEVICE_ADDED = 6; |
| private static final int MSG_ON_BLE_SCAN_FAILED = 7; |
| private static final int MSG_SHOW_BLUETOOTH_DIALOG = 8; |
| private static final int MSG_DISMISS_BLUETOOTH_DIALOG = 9; |
| private static final int MSG_BLE_ABORT_SCAN = 10; |
| private static final int MSG_SHOW_ERROR = 11; |
| |
| private volatile KeyboardHandler mHandler; |
| private volatile KeyboardUIHandler mUIHandler; |
| |
| protected volatile Context mContext; |
| |
| private boolean mEnabled; |
| private String mKeyboardName; |
| private CachedBluetoothDeviceManager mCachedDeviceManager; |
| private LocalBluetoothAdapter mLocalBluetoothAdapter; |
| private LocalBluetoothProfileManager mProfileManager; |
| private boolean mBootCompleted; |
| private long mBootCompletedTime; |
| |
| private int mInTabletMode = InputManager.SWITCH_STATE_UNKNOWN; |
| private int mScanAttempt = 0; |
| private ScanCallback mScanCallback; |
| private BluetoothDialog mDialog; |
| |
| private int mState; |
| |
| public KeyboardUI(Context context) { |
| super(context); |
| } |
| |
| @Override |
| public void start() { |
| mContext = super.mContext; |
| HandlerThread thread = new HandlerThread("Keyboard", Process.THREAD_PRIORITY_BACKGROUND); |
| thread.start(); |
| mHandler = new KeyboardHandler(thread.getLooper()); |
| mHandler.sendEmptyMessage(MSG_INIT); |
| } |
| |
| @Override |
| protected void onConfigurationChanged(Configuration newConfig) { |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| pw.println("KeyboardUI:"); |
| pw.println(" mEnabled=" + mEnabled); |
| pw.println(" mBootCompleted=" + mEnabled); |
| pw.println(" mBootCompletedTime=" + mBootCompletedTime); |
| pw.println(" mKeyboardName=" + mKeyboardName); |
| pw.println(" mInTabletMode=" + mInTabletMode); |
| pw.println(" mState=" + stateToString(mState)); |
| } |
| |
| @Override |
| protected void onBootCompleted() { |
| mHandler.sendEmptyMessage(MSG_ON_BOOT_COMPLETED); |
| } |
| |
| @Override |
| public void onTabletModeChanged(long whenNanos, boolean inTabletMode) { |
| if (DEBUG) { |
| Slog.d(TAG, "onTabletModeChanged(" + whenNanos + ", " + inTabletMode + ")"); |
| } |
| |
| if (inTabletMode && mInTabletMode != InputManager.SWITCH_STATE_ON |
| || !inTabletMode && mInTabletMode != InputManager.SWITCH_STATE_OFF) { |
| mInTabletMode = inTabletMode ? |
| InputManager.SWITCH_STATE_ON : InputManager.SWITCH_STATE_OFF; |
| processKeyboardState(); |
| } |
| } |
| |
| // Shoud only be called on the handler thread |
| private void init() { |
| Context context = mContext; |
| mKeyboardName = |
| context.getString(com.android.internal.R.string.config_packagedKeyboardName); |
| if (TextUtils.isEmpty(mKeyboardName)) { |
| if (DEBUG) { |
| Slog.d(TAG, "No packaged keyboard name given."); |
| } |
| return; |
| } |
| |
| LocalBluetoothManager bluetoothManager = Dependency.get(LocalBluetoothManager.class); |
| if (bluetoothManager == null) { |
| if (DEBUG) { |
| Slog.e(TAG, "Failed to retrieve LocalBluetoothManager instance"); |
| } |
| return; |
| } |
| mEnabled = true; |
| mCachedDeviceManager = bluetoothManager.getCachedDeviceManager(); |
| mLocalBluetoothAdapter = bluetoothManager.getBluetoothAdapter(); |
| mProfileManager = bluetoothManager.getProfileManager(); |
| bluetoothManager.getEventManager().registerCallback(new BluetoothCallbackHandler()); |
| BluetoothUtils.setErrorListener(new BluetoothErrorListener()); |
| |
| InputManager im = context.getSystemService(InputManager.class); |
| im.registerOnTabletModeChangedListener(this, mHandler); |
| mInTabletMode = im.isInTabletMode(); |
| |
| processKeyboardState(); |
| mUIHandler = new KeyboardUIHandler(); |
| } |
| |
| // Should only be called on the handler thread |
| private void processKeyboardState() { |
| mHandler.removeMessages(MSG_PROCESS_KEYBOARD_STATE); |
| |
| if (!mEnabled) { |
| mState = STATE_NOT_ENABLED; |
| return; |
| } |
| |
| if (!mBootCompleted) { |
| mState = STATE_WAITING_FOR_BOOT_COMPLETED; |
| return; |
| } |
| |
| if (mInTabletMode != InputManager.SWITCH_STATE_OFF) { |
| if (mState == STATE_WAITING_FOR_DEVICE_DISCOVERY) { |
| stopScanning(); |
| } else if (mState == STATE_WAITING_FOR_BLUETOOTH) { |
| mUIHandler.sendEmptyMessage(MSG_DISMISS_BLUETOOTH_DIALOG); |
| } |
| mState = STATE_WAITING_FOR_TABLET_MODE_EXIT; |
| return; |
| } |
| |
| final int btState = mLocalBluetoothAdapter.getState(); |
| if ((btState == BluetoothAdapter.STATE_TURNING_ON || btState == BluetoothAdapter.STATE_ON) |
| && mState == STATE_WAITING_FOR_BLUETOOTH) { |
| // If we're waiting for bluetooth but it has come on in the meantime, or is coming |
| // on, just dismiss the dialog. This frequently happens during device startup. |
| mUIHandler.sendEmptyMessage(MSG_DISMISS_BLUETOOTH_DIALOG); |
| } |
| |
| if (btState == BluetoothAdapter.STATE_TURNING_ON) { |
| mState = STATE_WAITING_FOR_BLUETOOTH; |
| // Wait for bluetooth to fully come on. |
| return; |
| } |
| |
| if (btState != BluetoothAdapter.STATE_ON) { |
| mState = STATE_WAITING_FOR_BLUETOOTH; |
| showBluetoothDialog(); |
| return; |
| } |
| |
| CachedBluetoothDevice device = getPairedKeyboard(); |
| if (mState == STATE_WAITING_FOR_TABLET_MODE_EXIT || mState == STATE_WAITING_FOR_BLUETOOTH) { |
| if (device != null) { |
| // If we're just coming out of tablet mode or BT just turned on, |
| // then we want to go ahead and automatically connect to the |
| // keyboard. We want to avoid this in other cases because we might |
| // be spuriously called after the user has manually disconnected |
| // the keyboard, meaning we shouldn't try to automtically connect |
| // it again. |
| mState = STATE_PAIRED; |
| device.connect(false); |
| return; |
| } |
| mCachedDeviceManager.clearNonBondedDevices(); |
| } |
| |
| device = getDiscoveredKeyboard(); |
| if (device != null) { |
| mState = STATE_PAIRING; |
| device.startPairing(); |
| } else { |
| mState = STATE_WAITING_FOR_DEVICE_DISCOVERY; |
| startScanning(); |
| } |
| } |
| |
| // Should only be called on the handler thread |
| public void onBootCompletedInternal() { |
| mBootCompleted = true; |
| mBootCompletedTime = SystemClock.uptimeMillis(); |
| if (mState == STATE_WAITING_FOR_BOOT_COMPLETED) { |
| processKeyboardState(); |
| } |
| } |
| |
| // Should only be called on the handler thread |
| private void showBluetoothDialog() { |
| if (isUserSetupComplete()) { |
| long now = SystemClock.uptimeMillis(); |
| long earliestDialogTime = mBootCompletedTime + BLUETOOTH_START_DELAY_MILLIS; |
| if (earliestDialogTime < now) { |
| mUIHandler.sendEmptyMessage(MSG_SHOW_BLUETOOTH_DIALOG); |
| } else { |
| mHandler.sendEmptyMessageAtTime(MSG_PROCESS_KEYBOARD_STATE, earliestDialogTime); |
| } |
| } else { |
| // If we're in setup wizard and the keyboard is docked, just automatically enable BT. |
| mLocalBluetoothAdapter.enable(); |
| } |
| } |
| |
| private boolean isUserSetupComplete() { |
| ContentResolver resolver = mContext.getContentResolver(); |
| return Secure.getIntForUser( |
| resolver, Secure.USER_SETUP_COMPLETE, 0, UserHandle.USER_CURRENT) != 0; |
| } |
| |
| private CachedBluetoothDevice getPairedKeyboard() { |
| Set<BluetoothDevice> devices = mLocalBluetoothAdapter.getBondedDevices(); |
| for (BluetoothDevice d : devices) { |
| if (mKeyboardName.equals(d.getName())) { |
| return getCachedBluetoothDevice(d); |
| } |
| } |
| return null; |
| } |
| |
| private CachedBluetoothDevice getDiscoveredKeyboard() { |
| Collection<CachedBluetoothDevice> devices = mCachedDeviceManager.getCachedDevicesCopy(); |
| for (CachedBluetoothDevice d : devices) { |
| if (d.getName().equals(mKeyboardName)) { |
| return d; |
| } |
| } |
| return null; |
| } |
| |
| |
| private CachedBluetoothDevice getCachedBluetoothDevice(BluetoothDevice d) { |
| CachedBluetoothDevice cachedDevice = mCachedDeviceManager.findDevice(d); |
| if (cachedDevice == null) { |
| cachedDevice = mCachedDeviceManager.addDevice(d); |
| } |
| return cachedDevice; |
| } |
| |
| private void startScanning() { |
| BluetoothLeScanner scanner = mLocalBluetoothAdapter.getBluetoothLeScanner(); |
| ScanFilter filter = (new ScanFilter.Builder()).setDeviceName(mKeyboardName).build(); |
| ScanSettings settings = (new ScanSettings.Builder()) |
| .setCallbackType(ScanSettings.CALLBACK_TYPE_ALL_MATCHES) |
| .setNumOfMatches(ScanSettings.MATCH_NUM_ONE_ADVERTISEMENT) |
| .setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY) |
| .setReportDelay(0) |
| .build(); |
| mScanCallback = new KeyboardScanCallback(); |
| scanner.startScan(Arrays.asList(filter), settings, mScanCallback); |
| |
| Message abortMsg = mHandler.obtainMessage(MSG_BLE_ABORT_SCAN, ++mScanAttempt, 0); |
| mHandler.sendMessageDelayed(abortMsg, BLUETOOTH_SCAN_TIMEOUT_MILLIS); |
| } |
| |
| private void stopScanning() { |
| if (mScanCallback != null) { |
| BluetoothLeScanner scanner = mLocalBluetoothAdapter.getBluetoothLeScanner(); |
| if (scanner != null) { |
| scanner.stopScan(mScanCallback); |
| } |
| mScanCallback = null; |
| } |
| } |
| |
| // Should only be called on the handler thread |
| private void bleAbortScanInternal(int scanAttempt) { |
| if (mState == STATE_WAITING_FOR_DEVICE_DISCOVERY && scanAttempt == mScanAttempt) { |
| if (DEBUG) { |
| Slog.d(TAG, "Bluetooth scan timed out"); |
| } |
| stopScanning(); |
| // FIXME: should we also try shutting off bluetooth if we enabled |
| // it in the first place? |
| mState = STATE_DEVICE_NOT_FOUND; |
| } |
| } |
| |
| // Should only be called on the handler thread |
| private void onDeviceAddedInternal(CachedBluetoothDevice d) { |
| if (mState == STATE_WAITING_FOR_DEVICE_DISCOVERY && d.getName().equals(mKeyboardName)) { |
| stopScanning(); |
| d.startPairing(); |
| mState = STATE_PAIRING; |
| } |
| } |
| |
| // Should only be called on the handler thread |
| private void onBluetoothStateChangedInternal(int bluetoothState) { |
| if (bluetoothState == BluetoothAdapter.STATE_ON && mState == STATE_WAITING_FOR_BLUETOOTH) { |
| processKeyboardState(); |
| } |
| } |
| |
| // Should only be called on the handler thread |
| private void onDeviceBondStateChangedInternal(CachedBluetoothDevice d, int bondState) { |
| if (mState == STATE_PAIRING && d.getName().equals(mKeyboardName)) { |
| if (bondState == BluetoothDevice.BOND_BONDED) { |
| // We don't need to manually connect to the device here because it will |
| // automatically try to connect after it has been paired. |
| mState = STATE_PAIRED; |
| } else if (bondState == BluetoothDevice.BOND_NONE) { |
| mState = STATE_PAIRING_FAILED; |
| } |
| } |
| } |
| |
| // Should only be called on the handler thread |
| private void onBleScanFailedInternal() { |
| mScanCallback = null; |
| if (mState == STATE_WAITING_FOR_DEVICE_DISCOVERY) { |
| mState = STATE_DEVICE_NOT_FOUND; |
| } |
| } |
| |
| // Should only be called on the handler thread. We want to be careful not to show errors for |
| // pairings not initiated by this UI, so we only pop up the toast when we're at an appropriate |
| // point in our pairing flow and it's the expected device. |
| private void onShowErrorInternal(Context context, String name, int messageResId) { |
| if ((mState == STATE_PAIRING || mState == STATE_PAIRING_FAILED) |
| && mKeyboardName.equals(name)) { |
| String message = context.getString(messageResId, name); |
| Toast.makeText(context, message, Toast.LENGTH_SHORT).show(); |
| } |
| } |
| |
| private final class KeyboardUIHandler extends Handler { |
| public KeyboardUIHandler() { |
| super(Looper.getMainLooper(), null, true /*async*/); |
| } |
| @Override |
| public void handleMessage(Message msg) { |
| switch(msg.what) { |
| case MSG_SHOW_BLUETOOTH_DIALOG: { |
| if (mDialog != null) { |
| // Don't show another dialog if one is already present |
| break; |
| } |
| DialogInterface.OnClickListener clickListener = |
| new BluetoothDialogClickListener(); |
| DialogInterface.OnDismissListener dismissListener = |
| new BluetoothDialogDismissListener(); |
| mDialog = new BluetoothDialog(mContext); |
| mDialog.setTitle(R.string.enable_bluetooth_title); |
| mDialog.setMessage(R.string.enable_bluetooth_message); |
| mDialog.setPositiveButton( |
| R.string.enable_bluetooth_confirmation_ok, clickListener); |
| mDialog.setNegativeButton(android.R.string.cancel, clickListener); |
| mDialog.setOnDismissListener(dismissListener); |
| mDialog.show(); |
| break; |
| } |
| case MSG_DISMISS_BLUETOOTH_DIALOG: { |
| if (mDialog != null) { |
| mDialog.dismiss(); |
| } |
| break; |
| } |
| } |
| } |
| } |
| |
| private final class KeyboardHandler extends Handler { |
| public KeyboardHandler(Looper looper) { |
| super(looper, null, true /*async*/); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch(msg.what) { |
| case MSG_INIT: { |
| init(); |
| break; |
| } |
| case MSG_ON_BOOT_COMPLETED: { |
| onBootCompletedInternal(); |
| break; |
| } |
| case MSG_PROCESS_KEYBOARD_STATE: { |
| processKeyboardState(); |
| break; |
| } |
| case MSG_ENABLE_BLUETOOTH: { |
| boolean enable = msg.arg1 == 1; |
| if (enable) { |
| mLocalBluetoothAdapter.enable(); |
| } else { |
| mState = STATE_USER_CANCELLED; |
| } |
| break; |
| } |
| case MSG_BLE_ABORT_SCAN: { |
| int scanAttempt = msg.arg1; |
| bleAbortScanInternal(scanAttempt); |
| break; |
| } |
| case MSG_ON_BLUETOOTH_STATE_CHANGED: { |
| int bluetoothState = msg.arg1; |
| onBluetoothStateChangedInternal(bluetoothState); |
| break; |
| } |
| case MSG_ON_DEVICE_BOND_STATE_CHANGED: { |
| CachedBluetoothDevice d = (CachedBluetoothDevice)msg.obj; |
| int bondState = msg.arg1; |
| onDeviceBondStateChangedInternal(d, bondState); |
| break; |
| } |
| case MSG_ON_BLUETOOTH_DEVICE_ADDED: { |
| BluetoothDevice d = (BluetoothDevice)msg.obj; |
| CachedBluetoothDevice cachedDevice = getCachedBluetoothDevice(d); |
| onDeviceAddedInternal(cachedDevice); |
| break; |
| |
| } |
| case MSG_ON_BLE_SCAN_FAILED: { |
| onBleScanFailedInternal(); |
| break; |
| } |
| case MSG_SHOW_ERROR: { |
| Pair<Context, String> p = (Pair<Context, String>) msg.obj; |
| onShowErrorInternal(p.first, p.second, msg.arg1); |
| } |
| } |
| } |
| } |
| |
| private final class BluetoothDialogClickListener implements DialogInterface.OnClickListener { |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| int enable = DialogInterface.BUTTON_POSITIVE == which ? 1 : 0; |
| mHandler.obtainMessage(MSG_ENABLE_BLUETOOTH, enable, 0).sendToTarget(); |
| mDialog = null; |
| } |
| } |
| |
| private final class BluetoothDialogDismissListener |
| implements DialogInterface.OnDismissListener { |
| @Override |
| public void onDismiss(DialogInterface dialog) { |
| mDialog = null; |
| } |
| } |
| |
| private final class KeyboardScanCallback extends ScanCallback { |
| |
| private boolean isDeviceDiscoverable(ScanResult result) { |
| final ScanRecord scanRecord = result.getScanRecord(); |
| final int flags = scanRecord.getAdvertiseFlags(); |
| final int BT_DISCOVERABLE_MASK = 0x03; |
| |
| return (flags & BT_DISCOVERABLE_MASK) != 0; |
| } |
| |
| @Override |
| public void onBatchScanResults(List<ScanResult> results) { |
| if (DEBUG) { |
| Slog.d(TAG, "onBatchScanResults(" + results.size() + ")"); |
| } |
| |
| BluetoothDevice bestDevice = null; |
| int bestRssi = Integer.MIN_VALUE; |
| |
| for (ScanResult result : results) { |
| if (DEBUG) { |
| Slog.d(TAG, "onBatchScanResults: considering " + result); |
| } |
| |
| if (isDeviceDiscoverable(result) && result.getRssi() > bestRssi) { |
| bestDevice = result.getDevice(); |
| bestRssi = result.getRssi(); |
| } |
| } |
| |
| if (bestDevice != null) { |
| mHandler.obtainMessage(MSG_ON_BLUETOOTH_DEVICE_ADDED, bestDevice).sendToTarget(); |
| } |
| } |
| |
| @Override |
| public void onScanFailed(int errorCode) { |
| if (DEBUG) { |
| Slog.d(TAG, "onScanFailed(" + errorCode + ")"); |
| } |
| mHandler.obtainMessage(MSG_ON_BLE_SCAN_FAILED).sendToTarget(); |
| } |
| |
| @Override |
| public void onScanResult(int callbackType, ScanResult result) { |
| if (DEBUG) { |
| Slog.d(TAG, "onScanResult(" + callbackType + ", " + result + ")"); |
| } |
| |
| if (isDeviceDiscoverable(result)) { |
| mHandler.obtainMessage(MSG_ON_BLUETOOTH_DEVICE_ADDED, |
| result.getDevice()).sendToTarget(); |
| } else if (DEBUG) { |
| Slog.d(TAG, "onScanResult: device " + result.getDevice() + |
| " is not discoverable, ignoring"); |
| } |
| } |
| } |
| |
| private final class BluetoothCallbackHandler implements BluetoothCallback { |
| @Override |
| public void onBluetoothStateChanged(int bluetoothState) { |
| mHandler.obtainMessage(MSG_ON_BLUETOOTH_STATE_CHANGED, |
| bluetoothState, 0).sendToTarget(); |
| } |
| |
| @Override |
| public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) { |
| mHandler.obtainMessage(MSG_ON_DEVICE_BOND_STATE_CHANGED, |
| bondState, 0, cachedDevice).sendToTarget(); |
| } |
| } |
| |
| private final class BluetoothErrorListener implements BluetoothUtils.ErrorListener { |
| public void onShowError(Context context, String name, int messageResId) { |
| mHandler.obtainMessage(MSG_SHOW_ERROR, messageResId, 0 /*unused*/, |
| new Pair<>(context, name)).sendToTarget(); |
| } |
| } |
| |
| private static String stateToString(int state) { |
| switch (state) { |
| case STATE_NOT_ENABLED: |
| return "STATE_NOT_ENABLED"; |
| case STATE_WAITING_FOR_BOOT_COMPLETED: |
| return "STATE_WAITING_FOR_BOOT_COMPLETED"; |
| case STATE_WAITING_FOR_TABLET_MODE_EXIT: |
| return "STATE_WAITING_FOR_TABLET_MODE_EXIT"; |
| case STATE_WAITING_FOR_DEVICE_DISCOVERY: |
| return "STATE_WAITING_FOR_DEVICE_DISCOVERY"; |
| case STATE_WAITING_FOR_BLUETOOTH: |
| return "STATE_WAITING_FOR_BLUETOOTH"; |
| case STATE_PAIRING: |
| return "STATE_PAIRING"; |
| case STATE_PAIRED: |
| return "STATE_PAIRED"; |
| case STATE_PAIRING_FAILED: |
| return "STATE_PAIRING_FAILED"; |
| case STATE_USER_CANCELLED: |
| return "STATE_USER_CANCELLED"; |
| case STATE_DEVICE_NOT_FOUND: |
| return "STATE_DEVICE_NOT_FOUND"; |
| case STATE_UNKNOWN: |
| default: |
| return "STATE_UNKNOWN (" + state + ")"; |
| } |
| } |
| } |