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BLECentralPlugin.java
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BLECentralPlugin.java
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// (c) 2014-2016 Don Coleman
//
// 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.megster.cordova.ble.central;
import android.Manifest;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothManager;
import android.bluetooth.BluetoothProfile;
import android.bluetooth.le.BluetoothLeScanner;
import android.bluetooth.le.ScanCallback;
import android.bluetooth.le.ScanResult;
import android.bluetooth.le.ScanFilter;
import android.bluetooth.le.ScanSettings;
import android.location.LocationManager;
import android.os.ParcelUuid;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.IntentFilter;
import android.os.Handler;
import android.os.Looper;
import android.os.Build;
import android.provider.Settings;
import org.apache.cordova.CallbackContext;
import org.apache.cordova.CordovaArgs;
import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.LOG;
import org.apache.cordova.PermissionHelper;
import org.apache.cordova.PluginResult;
import org.json.JSONArray;
import org.json.JSONObject;
import org.json.JSONException;
import java.util.*;
import static android.bluetooth.BluetoothDevice.DEVICE_TYPE_DUAL;
import static android.bluetooth.BluetoothDevice.DEVICE_TYPE_LE;
import static android.bluetooth.BluetoothDevice.ACTION_BOND_STATE_CHANGED;
import static android.bluetooth.BluetoothDevice.EXTRA_BOND_STATE;
public class BLECentralPlugin extends CordovaPlugin {
// permissions
private static final String ACCESS_BACKGROUND_LOCATION = "android.permission.ACCESS_BACKGROUND_LOCATION"; // API 29
private static final String BLUETOOTH_CONNECT = "android.permission.BLUETOOTH_CONNECT" ; // API 31
private static final String BLUETOOTH_SCAN = "android.permission.BLUETOOTH_SCAN" ; // API 31
// actions
private static final String STOP_SCAN = "stopScan";
private static final String START_SCAN_WITH_OPTIONS = "startScanWithOptions";
private static final String BONDED_DEVICES = "bondedDevices";
private static final String LIST = "list";
private static final String CONNECT = "connect";
private static final String AUTOCONNECT = "autoConnect";
private static final String DISCONNECT = "disconnect";
private static final String QUEUE_CLEANUP = "queueCleanup";
private static final String SET_PIN = "setPin";
private static final String BOND = "bond";
private static final String UNBOND = "unbond";
private static final String READ_BOND_STATE = "readBondState";
private static final String REQUEST_MTU = "requestMtu";
private static final String REQUEST_CONNECTION_PRIORITY = "requestConnectionPriority";
private final String CONNECTION_PRIORITY_HIGH = "high";
private final String CONNECTION_PRIORITY_LOW = "low";
private final String CONNECTION_PRIORITY_BALANCED = "balanced";
private static final String REFRESH_DEVICE_CACHE = "refreshDeviceCache";
private static final String READ = "read";
private static final String WRITE = "write";
private static final String WRITE_WITHOUT_RESPONSE = "writeWithoutResponse";
private static final String READ_RSSI = "readRSSI";
private static final String START_NOTIFICATION = "startNotification"; // register for characteristic notification
private static final String STOP_NOTIFICATION = "stopNotification"; // remove characteristic notification
private static final String IS_ENABLED = "isEnabled";
private static final String IS_LOCATION_ENABLED = "isLocationEnabled";
private static final String IS_CONNECTED = "isConnected";
private static final String SETTINGS = "showBluetoothSettings";
private static final String ENABLE = "enable";
private static final String START_STATE_NOTIFICATIONS = "startStateNotifications";
private static final String STOP_STATE_NOTIFICATIONS = "stopStateNotifications";
private static final String OPEN_L2CAP = "openL2Cap";
private static final String CLOSE_L2CAP = "closeL2Cap";
private static final String RECEIVE_L2CAP = "receiveDataL2Cap";
private static final String WRITE_L2CAP = "writeL2Cap";
private static final String START_LOCATION_STATE_NOTIFICATIONS = "startLocationStateNotifications";
private static final String STOP_LOCATION_STATE_NOTIFICATIONS = "stopLocationStateNotifications";
// callbacks
CallbackContext discoverCallback;
private CallbackContext enableBluetoothCallback;
private static final String TAG = "BLEPlugin";
private static final int REQUEST_ENABLE_BLUETOOTH = 1;
BluetoothAdapter bluetoothAdapter;
// key is the MAC Address
Map<String, Peripheral> peripherals = new LinkedHashMap<String, Peripheral>();
// scan options
boolean reportDuplicates = false;
boolean forceScanFilter = false;
private static final int REQUEST_BLUETOOTH_SCAN = 2;
private static final int REQUEST_BLUETOOTH_CONNECT = 3;
private static final int REQUEST_BLUETOOTH_CONNECT_AUTO = 4;
private static final int REQUEST_GET_BONDED_DEVICES = 5;
private static final int REQUEST_LIST_KNOWN_DEVICES = 6;
private static final int REQUEST_BOND = 7;
private static final int REQUEST_UNBOND = 8;
private static final int REQUEST_READ_BOND_STATE = 9;
private static int COMPILE_SDK_VERSION = -1;
private CallbackContext permissionCallback;
private String deviceMacAddress;
private boolean usePairingDialog;
private UUID[] serviceUUIDs;
private int scanSeconds;
private ScanSettings scanSettings;
private final Handler stopScanHandler = new Handler(Looper.getMainLooper());
private final Runnable stopScanRunnable = this::stopScan;
// Bluetooth state notification
CallbackContext stateCallback;
BroadcastReceiver stateReceiver;
private BroadcastReceiver bondStateReceiver;
Map<Integer, String> bluetoothStates = new Hashtable<Integer, String>() {{
put(BluetoothAdapter.STATE_OFF, "off");
put(BluetoothAdapter.STATE_TURNING_OFF, "turningOff");
put(BluetoothAdapter.STATE_ON, "on");
put(BluetoothAdapter.STATE_TURNING_ON, "turningOn");
}};
CallbackContext locationStateCallback;
BroadcastReceiver locationStateReceiver;
@Override
protected void pluginInitialize() {
if (COMPILE_SDK_VERSION == -1) {
Context context = cordova.getContext();
COMPILE_SDK_VERSION = context.getApplicationContext().getApplicationInfo().targetSdkVersion;
}
}
@Override
public void onDestroy() {
removeStateListener();
removeLocationStateListener();
removeBondStateListener();
for(Peripheral peripheral : peripherals.values()) {
peripheral.disconnect();
}
}
@Override
public void onReset() {
removeStateListener();
removeLocationStateListener();
removeBondStateListener();
for(Peripheral peripheral : peripherals.values()) {
peripheral.disconnect();
}
}
@Override
public boolean execute(String action, CordovaArgs args, CallbackContext callbackContext) throws JSONException {
LOG.d(TAG, "action = %s", action);
if (bluetoothAdapter == null) {
Activity activity = cordova.getActivity();
boolean hardwareSupportsBLE = activity.getApplicationContext()
.getPackageManager()
.hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE) &&
Build.VERSION.SDK_INT >= 18;
if (!hardwareSupportsBLE) {
LOG.w(TAG, "This hardware does not support Bluetooth Low Energy.");
callbackContext.error("This hardware does not support Bluetooth Low Energy.");
return false;
}
BluetoothManager bluetoothManager = (BluetoothManager) activity.getSystemService(Context.BLUETOOTH_SERVICE);
bluetoothAdapter = bluetoothManager.getAdapter();
}
boolean validAction = true;
if (action.equals(STOP_SCAN)) {
stopScan();
callbackContext.success();
} else if (action.equals(LIST)) {
listKnownDevices(callbackContext);
} else if (action.equals(CONNECT)) {
String macAddress = args.getString(0);
connect(callbackContext, macAddress);
} else if (action.equals(AUTOCONNECT)) {
String macAddress = args.getString(0);
autoConnect(callbackContext, macAddress);
} else if (action.equals(DISCONNECT)) {
String macAddress = args.getString(0);
disconnect(callbackContext, macAddress);
} else if (action.equals(QUEUE_CLEANUP)) {
String macAddress = args.getString(0);
queueCleanup(callbackContext, macAddress);
} else if (action.equals(SET_PIN)) {
String pin = args.getString(0);
setPin(callbackContext, pin);
} else if (action.equals(BOND)) {
String macAddress = args.getString(0);
JSONObject options = args.getJSONObject(1);
boolean usePairingDialog = options != null && options.optBoolean("usePairingDialog", true);
bond(callbackContext, macAddress, usePairingDialog);
} else if (action.equals(UNBOND)) {
String macAddress = args.getString(0);
unbond(callbackContext, macAddress);
} else if (action.equals(READ_BOND_STATE)) {
String macAddress = args.getString(0);
readBondState(callbackContext, macAddress);
} else if (action.equals(REQUEST_MTU)) {
String macAddress = args.getString(0);
int mtuValue = args.getInt(1);
requestMtu(callbackContext, macAddress, mtuValue);
} else if (action.equals(REQUEST_CONNECTION_PRIORITY)) {
String macAddress = args.getString(0);
String priority = args.getString(1);
requestConnectionPriority(callbackContext, macAddress, priority);
} else if (action.equals(REFRESH_DEVICE_CACHE)) {
String macAddress = args.getString(0);
long timeoutMillis = args.getLong(1);
refreshDeviceCache(callbackContext, macAddress, timeoutMillis);
} else if (action.equals(READ)) {
String macAddress = args.getString(0);
UUID serviceUUID = uuidFromString(args.getString(1));
UUID characteristicUUID = uuidFromString(args.getString(2));
read(callbackContext, macAddress, serviceUUID, characteristicUUID);
} else if (action.equals(READ_RSSI)) {
String macAddress = args.getString(0);
readRSSI(callbackContext, macAddress);
} else if (action.equals(WRITE)) {
String macAddress = args.getString(0);
UUID serviceUUID = uuidFromString(args.getString(1));
UUID characteristicUUID = uuidFromString(args.getString(2));
byte[] data = args.getArrayBuffer(3);
int type = BluetoothGattCharacteristic.WRITE_TYPE_DEFAULT;
write(callbackContext, macAddress, serviceUUID, characteristicUUID, data, type);
} else if (action.equals(WRITE_WITHOUT_RESPONSE)) {
String macAddress = args.getString(0);
UUID serviceUUID = uuidFromString(args.getString(1));
UUID characteristicUUID = uuidFromString(args.getString(2));
byte[] data = args.getArrayBuffer(3);
int type = BluetoothGattCharacteristic.WRITE_TYPE_NO_RESPONSE;
write(callbackContext, macAddress, serviceUUID, characteristicUUID, data, type);
} else if (action.equals(START_NOTIFICATION)) {
String macAddress = args.getString(0);
UUID serviceUUID = uuidFromString(args.getString(1));
UUID characteristicUUID = uuidFromString(args.getString(2));
registerNotifyCallback(callbackContext, macAddress, serviceUUID, characteristicUUID);
} else if (action.equals(STOP_NOTIFICATION)) {
String macAddress = args.getString(0);
UUID serviceUUID = uuidFromString(args.getString(1));
UUID characteristicUUID = uuidFromString(args.getString(2));
removeNotifyCallback(callbackContext, macAddress, serviceUUID, characteristicUUID);
} else if (action.equals(IS_ENABLED)) {
if (bluetoothAdapter.isEnabled()) {
callbackContext.success();
} else {
callbackContext.error("Bluetooth is disabled.");
}
} else if (action.equals(IS_LOCATION_ENABLED)) {
if (locationServicesEnabled()) {
callbackContext.success();
} else {
callbackContext.error("Location services disabled.");
}
} else if (action.equals(IS_CONNECTED)) {
String macAddress = args.getString(0);
if (peripherals.containsKey(macAddress) && peripherals.get(macAddress).isConnected()) {
callbackContext.success();
} else {
callbackContext.error("Not connected");
}
} else if (action.equals(SETTINGS)) {
Intent intent = new Intent(Settings.ACTION_BLUETOOTH_SETTINGS);
cordova.getActivity().startActivity(intent);
callbackContext.success();
} else if (action.equals(ENABLE)) {
enableBluetooth(callbackContext);
} else if (action.equals(START_STATE_NOTIFICATIONS)) {
if (this.stateCallback != null) {
callbackContext.error("State callback already registered.");
} else {
this.stateCallback = callbackContext;
addStateListener();
sendBluetoothStateChange(bluetoothAdapter.getState());
}
} else if (action.equals(STOP_STATE_NOTIFICATIONS)) {
if (this.stateCallback != null) {
// Clear callback in JavaScript without actually calling it
PluginResult result = new PluginResult(PluginResult.Status.NO_RESULT);
result.setKeepCallback(false);
this.stateCallback.sendPluginResult(result);
this.stateCallback = null;
}
removeStateListener();
callbackContext.success();
} else if (action.equals(START_LOCATION_STATE_NOTIFICATIONS)) {
if (this.locationStateCallback != null) {
callbackContext.error("Location state callback already registered.");
} else {
this.locationStateCallback = callbackContext;
addLocationStateListener();
sendLocationStateChange();
}
} else if (action.equals(STOP_LOCATION_STATE_NOTIFICATIONS)) {
if (this.locationStateCallback != null) {
// Clear callback in JavaScript without actually calling it
PluginResult result = new PluginResult(PluginResult.Status.NO_RESULT);
result.setKeepCallback(false);
this.locationStateCallback.sendPluginResult(result);
this.locationStateCallback = null;
}
removeLocationStateListener();
callbackContext.success();
} else if (action.equals(START_SCAN_WITH_OPTIONS)) {
UUID[] serviceUUIDs = parseServiceUUIDList(args.getJSONArray(0));
JSONObject options = args.getJSONObject(1);
resetScanOptions();
this.reportDuplicates = options.optBoolean("reportDuplicates", false);
this.forceScanFilter = options.optBoolean("forceScanFilter", false);
ScanSettings.Builder scanSettings = new ScanSettings.Builder();
switch (options.optString("scanMode", "")) {
case "":
break;
case "lowPower":
scanSettings.setScanMode( ScanSettings.SCAN_MODE_LOW_POWER );
break;
case "balanced":
scanSettings.setScanMode( ScanSettings.SCAN_MODE_BALANCED );
break;
case "lowLatency":
scanSettings.setScanMode( ScanSettings.SCAN_MODE_LOW_LATENCY );
break;
case "opportunistic":
scanSettings.setScanMode( ScanSettings.SCAN_MODE_OPPORTUNISTIC );
break;
default:
callbackContext.error("scanMode must be one of: lowPower | balanced | lowLatency | opportunistic");
validAction = false;
break;
}
switch (options.optString("callbackType", "")) {
case "":
break;
case "all":
scanSettings.setCallbackType( ScanSettings.CALLBACK_TYPE_ALL_MATCHES );
break;
case "first":
scanSettings.setCallbackType( ScanSettings.CALLBACK_TYPE_FIRST_MATCH );
break;
case "lost":
scanSettings.setCallbackType( ScanSettings.CALLBACK_TYPE_MATCH_LOST );
break;
default:
callbackContext.error("callbackType must be one of: all | first | lost");
validAction = false;
break;
}
switch (options.optString("matchMode", "")) {
case "":
break;
case "aggressive":
scanSettings.setMatchMode( ScanSettings.MATCH_MODE_AGGRESSIVE );
break;
case "sticky":
scanSettings.setMatchMode( ScanSettings.MATCH_MODE_STICKY );
break;
default:
callbackContext.error("matchMode must be one of: aggressive | sticky");
validAction = false;
break;
}
switch (options.optString("numOfMatches", "")) {
case "":
break;
case "one":
scanSettings.setNumOfMatches( ScanSettings.MATCH_NUM_ONE_ADVERTISEMENT );
break;
case "few":
scanSettings.setNumOfMatches( ScanSettings.MATCH_NUM_FEW_ADVERTISEMENT );
break;
case "max":
scanSettings.setNumOfMatches( ScanSettings.MATCH_NUM_MAX_ADVERTISEMENT );
break;
default:
callbackContext.error("numOfMatches must be one of: one | few | max");
validAction = false;
break;
}
switch (options.optString("phy", "")) {
case "":
break;
case "1m":
scanSettings.setPhy( BluetoothDevice.PHY_LE_1M );
break;
case "coded":
scanSettings.setPhy( BluetoothDevice.PHY_LE_CODED );
break;
case "all":
scanSettings.setPhy( ScanSettings.PHY_LE_ALL_SUPPORTED );
break;
default:
callbackContext.error("phy must be one of: 1m | coded | all");
validAction = false;
break;
}
if (validAction) {
String LEGACY = "legacy";
if (!options.isNull(LEGACY))
scanSettings.setLegacy( options.getBoolean(LEGACY) );
long reportDelay = options.optLong("reportDelay", -1 );
if (reportDelay >= 0L)
scanSettings.setReportDelay( reportDelay );
int scanDuration = options.optInt("duration", -1);
findLowEnergyDevices(callbackContext, serviceUUIDs, scanDuration, scanSettings.build() );
}
} else if (action.equals(BONDED_DEVICES)) {
getBondedDevices(callbackContext);
} else if (action.equals(OPEN_L2CAP)) {
String macAddress = args.getString(0);
int psm = args.getInt(1);
JSONObject options = args.optJSONObject(2);
boolean secureChannel = options != null && options.optBoolean("secureChannel", false);
connectL2cap(callbackContext, macAddress, psm, secureChannel);
} else if (action.equals(CLOSE_L2CAP)) {
String macAddress = args.getString(0);
int psm = args.getInt(1);
disconnectL2cap(callbackContext, macAddress, psm);
} else if (action.equals(WRITE_L2CAP)) {
String macAddress = args.getString(0);
int psm = args.getInt(1);
byte[] data = args.getArrayBuffer(2);
writeL2cap(callbackContext, macAddress, psm, data);
} else if (action.equals(RECEIVE_L2CAP)) {
String macAddress = args.getString(0);
int psm = args.getInt(1);
registerL2CapReceiver(callbackContext, macAddress, psm);
} else {
validAction = false;
}
return validAction;
}
private void enableBluetooth(CallbackContext callbackContext) {
if (COMPILE_SDK_VERSION >= 31 && Build.VERSION.SDK_INT >= 31) {
// https://developer.android.com/reference/android/bluetooth/BluetoothAdapter#ACTION_REQUEST_ENABLE
// Android 12+ requires BLUETOOTH_CONNECT in order to trigger an enable request
if (!PermissionHelper.hasPermission(this, BLUETOOTH_CONNECT)) {
permissionCallback = callbackContext;
PermissionHelper.requestPermission(this, REQUEST_ENABLE_BLUETOOTH, BLUETOOTH_CONNECT);
return;
}
}
enableBluetoothCallback = callbackContext;
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
cordova.startActivityForResult(this, intent, REQUEST_ENABLE_BLUETOOTH);
}
private void getBondedDevices(CallbackContext callbackContext) {
if (COMPILE_SDK_VERSION >= 31 && Build.VERSION.SDK_INT >= 31) { // (API 31) Build.VERSION_CODE.S
if (!PermissionHelper.hasPermission(this, BLUETOOTH_CONNECT)) {
permissionCallback = callbackContext;
PermissionHelper.requestPermission(this, REQUEST_GET_BONDED_DEVICES, BLUETOOTH_CONNECT);
return;
}
}
JSONArray bonded = new JSONArray();
Set<BluetoothDevice> bondedDevices = bluetoothAdapter.getBondedDevices();
for (BluetoothDevice device : bondedDevices) {
device.getBondState();
int type = device.getType();
// just low energy devices (filters out classic and unknown devices)
if (type == DEVICE_TYPE_LE || type == DEVICE_TYPE_DUAL) {
Peripheral p = new Peripheral(device);
bonded.put(p.asJSONObject());
}
}
callbackContext.success(bonded);
}
private UUID[] parseServiceUUIDList(JSONArray jsonArray) throws JSONException {
List<UUID> serviceUUIDs = new ArrayList<UUID>();
for(int i = 0; i < jsonArray.length(); i++){
String uuidString = jsonArray.getString(i);
serviceUUIDs.add(uuidFromString(uuidString));
}
return serviceUUIDs.toArray(new UUID[jsonArray.length()]);
}
private void onBluetoothStateChange(Intent intent) {
final String action = intent.getAction();
if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
final int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
sendBluetoothStateChange(state);
if (state == BluetoothAdapter.STATE_OFF) {
// #894 When Bluetooth is physically turned off the whole process might die, so the normal
// onConnectionStateChange callbacks won't be invoked
BluetoothManager bluetoothManager = (BluetoothManager) cordova.getActivity().getSystemService(Context.BLUETOOTH_SERVICE);
for(Peripheral peripheral : peripherals.values()) {
if (!peripheral.isConnected()) continue;
int connectedState = bluetoothManager.getConnectionState(peripheral.getDevice(), BluetoothProfile.GATT);
if (connectedState == BluetoothProfile.STATE_DISCONNECTED) {
peripheral.peripheralDisconnected("Bluetooth Disabled");
}
}
}
}
}
private void sendBluetoothStateChange(int state) {
if (this.stateCallback != null) {
PluginResult result = new PluginResult(PluginResult.Status.OK, this.bluetoothStates.get(state));
result.setKeepCallback(true);
this.stateCallback.sendPluginResult(result);
}
}
private void addStateListener() {
if (this.stateReceiver == null) {
this.stateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
onBluetoothStateChange(intent);
}
};
}
try {
IntentFilter intentFilter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
webView.getContext().registerReceiver(this.stateReceiver, intentFilter);
} catch (Exception e) {
LOG.e(TAG, "Error registering state receiver: " + e.getMessage(), e);
}
}
private void removeStateListener() {
if (this.stateReceiver != null) {
try {
webView.getContext().unregisterReceiver(this.stateReceiver);
} catch (Exception e) {
LOG.e(TAG, "Error unregistering state receiver: " + e.getMessage(), e);
}
}
this.stateCallback = null;
this.stateReceiver = null;
}
private void onLocationStateChange(Intent intent) {
final String action = intent.getAction();
if (LocationManager.PROVIDERS_CHANGED_ACTION.equals(action)) {
sendLocationStateChange();
}
}
private void sendLocationStateChange() {
if (this.locationStateCallback != null) {
PluginResult result = new PluginResult(PluginResult.Status.OK, locationServicesEnabled());
result.setKeepCallback(true);
this.locationStateCallback.sendPluginResult(result);
}
}
private void addLocationStateListener() {
if (this.locationStateReceiver == null) {
this.locationStateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
onLocationStateChange(intent);
}
};
}
try {
IntentFilter intentFilter = new IntentFilter(LocationManager.PROVIDERS_CHANGED_ACTION);
intentFilter.addAction(Intent.ACTION_PROVIDER_CHANGED);
webView.getContext().registerReceiver(this.locationStateReceiver, intentFilter);
} catch (Exception e) {
LOG.e(TAG, "Error registering location state receiver: " + e.getMessage(), e);
}
}
private void removeLocationStateListener() {
if (this.locationStateReceiver != null) {
try {
webView.getContext().unregisterReceiver(this.locationStateReceiver);
} catch (Exception e) {
LOG.e(TAG, "Error unregistering location state receiver: " + e.getMessage(), e);
}
}
this.locationStateCallback = null;
this.locationStateReceiver = null;
}
private void connect(CallbackContext callbackContext, String macAddress) {
if (COMPILE_SDK_VERSION >= 31 && Build.VERSION.SDK_INT >= 31) { // (API 31) Build.VERSION_CODE.S
if (!PermissionHelper.hasPermission(this, BLUETOOTH_CONNECT)) {
permissionCallback = callbackContext;
deviceMacAddress = macAddress;
PermissionHelper.requestPermission(this, REQUEST_BLUETOOTH_CONNECT, BLUETOOTH_CONNECT);
return;
}
}
if (bluetoothAdapter.getState() != BluetoothAdapter.STATE_ON) {
LOG.w(TAG, "Tried to connect while Bluetooth is disabled.");
callbackContext.error("Bluetooth is disabled.");
return;
}
if (!peripherals.containsKey(macAddress) && BLECentralPlugin.this.bluetoothAdapter.checkBluetoothAddress(macAddress)) {
BluetoothDevice device = BLECentralPlugin.this.bluetoothAdapter.getRemoteDevice(macAddress);
Peripheral peripheral = new Peripheral(device);
peripherals.put(macAddress, peripheral);
}
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral != null) {
// #894: BLE adapter state listener required so disconnect can be fired on BLE disabled
addStateListener();
peripheral.connect(callbackContext, cordova.getActivity(), false);
} else {
callbackContext.error("Peripheral " + macAddress + " not found.");
}
}
private void autoConnect(CallbackContext callbackContext, String macAddress) {
if (COMPILE_SDK_VERSION >= 31 && Build.VERSION.SDK_INT >= 31) { // (API 31) Build.VERSION_CODE.S
if (!PermissionHelper.hasPermission(this, BLUETOOTH_CONNECT)) {
permissionCallback = callbackContext;
deviceMacAddress = macAddress;
PermissionHelper.requestPermission(this, REQUEST_BLUETOOTH_CONNECT_AUTO, BLUETOOTH_CONNECT);
return;
}
}
if (bluetoothAdapter.getState() != BluetoothAdapter.STATE_ON) {
LOG.w(TAG, "Tried to connect while Bluetooth is disabled.");
callbackContext.error("Bluetooth is disabled.");
return;
}
Peripheral peripheral = peripherals.get(macAddress);
// allow auto-connect to connect to devices without scanning
if (peripheral == null) {
if (BluetoothAdapter.checkBluetoothAddress(macAddress)) {
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(macAddress);
peripheral = new Peripheral(device);
peripherals.put(device.getAddress(), peripheral);
} else {
callbackContext.error(macAddress + " is not a valid MAC address.");
return;
}
}
// #894: BLE adapter state listener required so disconnect can be fired on BLE disabled
addStateListener();
peripheral.connect(callbackContext, cordova.getActivity(), true);
}
private void disconnect(CallbackContext callbackContext, String macAddress) {
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral != null) {
peripheral.disconnect();
callbackContext.success();
} else {
String message = "Peripheral " + macAddress + " not found.";
LOG.w(TAG, message);
callbackContext.error(message);
}
}
private void queueCleanup(CallbackContext callbackContext, String macAddress) {
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral != null) {
peripheral.queueCleanup("Aborted due to queue cleanup");
}
callbackContext.success();
}
BroadcastReceiver broadCastReceiver;
private void setPin(CallbackContext callbackContext, final String pin) {
try {
if (broadCastReceiver != null) {
webView.getContext().unregisterReceiver(broadCastReceiver);
}
broadCastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_PAIRING_REQUEST.equals(action)) {
BluetoothDevice bluetoothDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
int type = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, BluetoothDevice.ERROR);
if (type == BluetoothDevice.PAIRING_VARIANT_PIN) {
bluetoothDevice.setPin(pin.getBytes());
abortBroadcast();
}
}
}
};
IntentFilter intentFilter = new IntentFilter(BluetoothDevice.ACTION_PAIRING_REQUEST);
intentFilter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
webView.getContext().registerReceiver(broadCastReceiver, intentFilter);
callbackContext.success("OK");
} catch (Exception e) {
callbackContext.error("Error: " + e.getMessage());
return;
}
}
private void bond(CallbackContext callbackContext, String macAddress, boolean usePairingDialog) {
if (COMPILE_SDK_VERSION >= 31 && Build.VERSION.SDK_INT >= 31) { // (API 31) Build.VERSION_CODE.S
List<String> missingPermissions = new ArrayList<String>();
if (!PermissionHelper.hasPermission(this, BLUETOOTH_CONNECT)) {
missingPermissions.add(BLUETOOTH_CONNECT);
}
if (usePairingDialog && !PermissionHelper.hasPermission(this, BLUETOOTH_SCAN)) {
missingPermissions.add(BLUETOOTH_SCAN);
}
if (!missingPermissions.isEmpty()) {
permissionCallback = callbackContext;
deviceMacAddress = macAddress;
this.usePairingDialog = usePairingDialog;
PermissionHelper.requestPermissions(this, REQUEST_BOND, missingPermissions.toArray(new String[0]));
return;
}
}
if (!peripherals.containsKey(macAddress) && BluetoothAdapter.checkBluetoothAddress(macAddress)) {
BluetoothDevice device = BLECentralPlugin.this.bluetoothAdapter.getRemoteDevice(macAddress);
Peripheral peripheral = new Peripheral(device);
peripherals.put(macAddress, peripheral);
}
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral != null) {
addBondStateListener();
peripheral.bond(callbackContext, bluetoothAdapter, usePairingDialog);
} else {
callbackContext.error("Peripheral " + macAddress + " not found.");
}
}
private void unbond(CallbackContext callbackContext, String macAddress) {
if (COMPILE_SDK_VERSION >= 31 && Build.VERSION.SDK_INT >= 31) { // (API 31) Build.VERSION_CODE.S
if (!PermissionHelper.hasPermission(this, BLUETOOTH_CONNECT)) {
permissionCallback = callbackContext;
deviceMacAddress = macAddress;
PermissionHelper.requestPermission(this, REQUEST_UNBOND, BLUETOOTH_CONNECT);
return;
}
}
if (!peripherals.containsKey(macAddress) && BluetoothAdapter.checkBluetoothAddress(macAddress)) {
BluetoothDevice device = BLECentralPlugin.this.bluetoothAdapter.getRemoteDevice(macAddress);
Peripheral peripheral = new Peripheral(device);
peripherals.put(macAddress, peripheral);
}
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral != null) {
peripheral.unbond(callbackContext);
} else {
callbackContext.success();
}
}
private void readBondState(CallbackContext callbackContext, String macAddress) {
if (COMPILE_SDK_VERSION >= 31 && Build.VERSION.SDK_INT >= 31) { // (API 31) Build.VERSION_CODE.S
if (!PermissionHelper.hasPermission(this, BLUETOOTH_CONNECT)) {
permissionCallback = callbackContext;
deviceMacAddress = macAddress;
PermissionHelper.requestPermission(this, REQUEST_READ_BOND_STATE, BLUETOOTH_CONNECT);
return;
}
}
if (!peripherals.containsKey(macAddress) && BluetoothAdapter.checkBluetoothAddress(macAddress)) {
BluetoothDevice device = BLECentralPlugin.this.bluetoothAdapter.getRemoteDevice(macAddress);
Peripheral peripheral = new Peripheral(device);
peripherals.put(macAddress, peripheral);
}
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral != null) {
peripheral.readBondState(callbackContext);
} else {
callbackContext.error("Peripheral " + macAddress + " not found.");
}
}
private void requestMtu(CallbackContext callbackContext, String macAddress, int mtuValue) {
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral != null) {
peripheral.requestMtu(callbackContext, mtuValue);
} else {
String message = "Peripheral " + macAddress + " not found.";
LOG.w(TAG, message);
callbackContext.error(message);
}
}
private void requestConnectionPriority(CallbackContext callbackContext, String macAddress, String priority) {
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral == null) {
callbackContext.error("Peripheral " + macAddress + " not found.");
return;
}
if (!peripheral.isConnected()) {
callbackContext.error("Peripheral " + macAddress + " is not connected.");
return;
}
int androidPriority = BluetoothGatt.CONNECTION_PRIORITY_BALANCED;
if (priority.equals(CONNECTION_PRIORITY_LOW)) {
androidPriority = BluetoothGatt.CONNECTION_PRIORITY_LOW_POWER;
} else if (priority.equals(CONNECTION_PRIORITY_BALANCED)) {
androidPriority = BluetoothGatt.CONNECTION_PRIORITY_BALANCED;
} else if (priority.equals(CONNECTION_PRIORITY_HIGH)) {
androidPriority = BluetoothGatt.CONNECTION_PRIORITY_HIGH;
}
peripheral.requestConnectionPriority(androidPriority);
callbackContext.success();
}
private void refreshDeviceCache(CallbackContext callbackContext, String macAddress, long timeoutMillis) {
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral != null) {
peripheral.refreshDeviceCache(callbackContext, timeoutMillis);
} else {
String message = "Peripheral " + macAddress + " not found.";
LOG.w(TAG, message);
callbackContext.error(message);
}
}
private void read(CallbackContext callbackContext, String macAddress, UUID serviceUUID, UUID characteristicUUID) {
Peripheral peripheral = peripherals.get(macAddress);
if (peripheral == null) {
callbackContext.error("Peripheral " + macAddress + " not found.");
return;
}
if (!peripheral.isConnected()) {
callbackContext.error("Peripheral " + macAddress + " is not connected.");
return;
}
//peripheral.readCharacteristic(callbackContext, serviceUUID, characteristicUUID);
peripheral.queueRead(callbackContext, serviceUUID, characteristicUUID);
}
private void readRSSI(CallbackContext callbackContext, String macAddress) {
Peripheral peripheral = peripherals.get(macAddress);