public void removeNotify(
UUID serviceUUID, UUID characteristicUUID, Callback success, Callback fail) {
Log.d(LOG_TAG, "removeNotify");
if (gatt == null) {
fail.invoke("BluetoothGatt is null");
return;
}
BluetoothGattService service = gatt.getService(serviceUUID);
BluetoothGattCharacteristic characteristic =
findNotifyCharacteristic(service, characteristicUUID);
// String key = generateHashKey(serviceUUID, characteristic);
if (characteristic != null) {
if (gatt.setCharacteristicNotification(characteristic, false)) {
success.invoke();
} else {
// TODO we can probably ignore and return success anyway since we removed the notification
// callback
fail.invoke("Failed to stop notification for " + characteristicUUID);
}
} else {
fail.invoke("Characteristic " + characteristicUUID + " not found");
}
}
@Override
protected void onDestroy() {
if (mGatt == null) {
return;
}
mGatt.close();
mGatt = null;
super.onDestroy();
}
public JSONObject asJSONObject(BluetoothGatt gatt) {
JSONObject json = asJSONObject();
try {
JSONArray servicesArray = new JSONArray();
JSONArray characteristicsArray = new JSONArray();
json.put("services", servicesArray);
json.put("characteristics", characteristicsArray);
if (connected && gatt != null) {
for (BluetoothGattService service : gatt.getServices()) {
servicesArray.put(UUIDHelper.uuidToString(service.getUuid()));
for (BluetoothGattCharacteristic characteristic : service.getCharacteristics()) {
JSONObject characteristicsJSON = new JSONObject();
characteristicsArray.put(characteristicsJSON);
characteristicsJSON.put("service", UUIDHelper.uuidToString(service.getUuid()));
characteristicsJSON.put(
"characteristic", UUIDHelper.uuidToString(characteristic.getUuid()));
// characteristicsJSON.put("instanceId", characteristic.getInstanceId());
characteristicsJSON.put("properties", Helper.decodeProperties(characteristic));
// characteristicsJSON.put("propertiesValue", characteristic.getProperties());
if (characteristic.getPermissions() > 0) {
characteristicsJSON.put("permissions", Helper.decodePermissions(characteristic));
// characteristicsJSON.put("permissionsValue", characteristic.getPermissions());
}
JSONArray descriptorsArray = new JSONArray();
for (BluetoothGattDescriptor descriptor : characteristic.getDescriptors()) {
JSONObject descriptorJSON = new JSONObject();
descriptorJSON.put("uuid", UUIDHelper.uuidToString(descriptor.getUuid()));
descriptorJSON.put("value", descriptor.getValue()); // always blank
if (descriptor.getPermissions() > 0) {
descriptorJSON.put("permissions", Helper.decodePermissions(descriptor));
// descriptorJSON.put("permissionsValue", descriptor.getPermissions());
}
descriptorsArray.put(descriptorJSON);
}
if (descriptorsArray.length() > 0) {
characteristicsJSON.put("descriptors", descriptorsArray);
}
}
}
}
} catch (JSONException e) { // TODO better error handling
e.printStackTrace();
}
return json;
}
/**
* Connect to GATT Server hosted by this device. Caller acts as GATT client. The callback is used
* to deliver results to Caller, such as connection status as well as any further GATT client
* operations. The method returns a BluetoothGatt instance. You can use BluetoothGatt to conduct
* GATT client operations.
*
* @param callback GATT callback handler that will receive asynchronous callbacks.
* @param autoConnect Whether to directly connect to the remote device (false) or to automatically
* connect as soon as the remote device becomes available (true).
* @throws IllegalArgumentException if callback is null
*/
public BluetoothGatt connectGatt(
Context context, boolean autoConnect, BluetoothGattCallback callback) {
// TODO(Bluetooth) check whether platform support BLE
// Do the check here or in GattServer?
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
IBluetoothManager managerService = adapter.getBluetoothManager();
try {
IBluetoothGatt iGatt = managerService.getBluetoothGatt();
if (iGatt == null) {
// BLE is not supported
return null;
}
BluetoothGatt gatt = new BluetoothGatt(context, iGatt, this);
gatt.connect(autoConnect, callback);
return gatt;
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return null;
}
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
Log.d(
LOG_TAG,
"onConnectionStateChange da "
+ status
+ " a "
+ newState
+ " peripheral:"
+ device.getAddress());
this.gatt = gatt;
if (newState == BluetoothGatt.STATE_CONNECTED) {
connected = true;
gatt.discoverServices();
} else if (newState == BluetoothGatt.STATE_DISCONNECTED) {
if (connected) {
connected = false;
if (gatt != null) {
gatt.close();
gatt = null;
}
WritableMap map = Arguments.createMap();
map.putString("peripheral", device.getAddress());
sendEvent("BleManagerDisconnectPeripheral", map);
Log.d(LOG_TAG, "BleManagerDisconnectPeripheral peripheral:" + device.getAddress());
}
if (connectFailCallback != null) {
connectFailCallback.invoke();
connectFailCallback = null;
connectCallback = null;
}
}
}
public void disconnect() {
connectCallback = null;
connected = false;
if (gatt != null) {
gatt.close();
gatt = null;
Log.d(LOG_TAG, "Disconnect");
WritableMap map = Arguments.createMap();
map.putString("peripheral", device.getAddress());
sendEvent("BleManagerDisconnectPeripheral", map);
} else Log.d(LOG_TAG, "GATT is null");
}
public void doWrite(BluetoothGattCharacteristic characteristic, byte[] data) {
// Log.d(LOG_TAG, "doWrite");
characteristic.setValue(data);
if (gatt.writeCharacteristic(characteristic)) {
// Log.d(LOG_TAG, "doWrite completato");
} else {
Log.d(LOG_TAG, "errore doWrite");
}
}
public void read(
UUID serviceUUID, UUID characteristicUUID, Callback successCallback, Callback failCallback) {
if (gatt == null) {
failCallback.invoke("BluetoothGatt is null");
return;
}
BluetoothGattService service = gatt.getService(serviceUUID);
BluetoothGattCharacteristic characteristic =
findReadableCharacteristic(service, characteristicUUID);
if (characteristic == null) {
failCallback.invoke("Characteristic " + characteristicUUID + " not found.");
} else {
readCallback = successCallback;
readFailCallback = failCallback;
if (!gatt.readCharacteristic(characteristic)) {
readCallback = null;
failCallback.invoke("Read failed");
}
}
}
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
Log.i("onConnectionStateChange", "Status: " + status);
switch (newState) {
case BluetoothProfile.STATE_CONNECTED:
Log.i("gattCallback", "STATE_CONNECTED");
gatt.discoverServices();
break;
case BluetoothProfile.STATE_DISCONNECTED:
Log.e("gattCallback", "STATE_DISCONNECTED");
break;
default:
Log.e("gattCallback", "STATE_OTHER");
}
}
@Override
public void onCharacteristicRead(
BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {
Log.i("onCharacteristicRead", characteristic.toString());
gatt.disconnect();
}
@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
List<BluetoothGattService> services = gatt.getServices();
Log.i("onServicesDiscovered", services.toString());
gatt.readCharacteristic(services.get(1).getCharacteristics().get(0));
}
public void write(
UUID serviceUUID,
UUID characteristicUUID,
byte[] data,
Callback successCallback,
Callback failCallback,
int writeType) {
Log.d(LOG_TAG, "write interno peripheral");
if (gatt == null) {
failCallback.invoke("BluetoothGatt is null");
} else {
BluetoothGattService service = gatt.getService(serviceUUID);
BluetoothGattCharacteristic characteristic =
findWritableCharacteristic(service, characteristicUUID, writeType);
characteristic.setWriteType(writeType);
if (characteristic == null) {
failCallback.invoke("Characteristic " + characteristicUUID + " not found.");
} else {
if (writeQueue.size() > 0) {
failCallback.invoke("Scrittura con byte ancora in coda");
}
if (writeCallback != null) {
failCallback.invoke("Altra scrittura in corso");
}
if (writeQueue.size() == 0 && writeCallback == null) {
if (BluetoothGattCharacteristic.WRITE_TYPE_DEFAULT == writeType) {
writeCallback = successCallback;
writeFailCallback = failCallback;
} else successCallback.invoke();
if (data.length > 20) {
int dataLength = data.length;
int count = 0;
byte[] firstMessage = null;
while (count < dataLength && (dataLength - count > 20)) {
if (count == 0) {
firstMessage = Arrays.copyOfRange(data, count, count + 20);
} else {
byte[] splitMessage = Arrays.copyOfRange(data, count, count + 20);
writeQueue.add(splitMessage);
}
count += 20;
}
if (count < dataLength) {
// Rimangono byte in coda
byte[] splitMessage = Arrays.copyOfRange(data, count, data.length);
Log.d(LOG_TAG, "Lunghezza ultimo messaggio: " + splitMessage.length);
writeQueue.add(splitMessage);
}
Log.d(LOG_TAG, "Messaggi in coda: " + writeQueue.size());
doWrite(characteristic, firstMessage);
} else {
characteristic.setValue(data);
if (gatt.writeCharacteristic(characteristic)) {
Log.d(LOG_TAG, "write completato");
} else {
writeCallback = null;
failCallback.invoke("Write failed");
}
}
}
}
}
}
// This seems way too complicated
public void registerNotify(
UUID serviceUUID, UUID characteristicUUID, Callback success, Callback fail) {
Log.d(LOG_TAG, "registerNotify");
if (gatt == null) {
fail.invoke("BluetoothGatt is null");
return;
}
BluetoothGattService service = gatt.getService(serviceUUID);
BluetoothGattCharacteristic characteristic =
findNotifyCharacteristic(service, characteristicUUID);
// String key = generateHashKey(serviceUUID, characteristic);
if (characteristic != null) {
Log.d(LOG_TAG, "characteristic ok");
if (gatt.setCharacteristicNotification(characteristic, true)) {
BluetoothGattDescriptor descriptor =
characteristic.getDescriptor(UUID.fromString(CHARACTERISTIC_NOTIFICATION_CONFIG));
if (descriptor != null) {
Log.d(LOG_TAG, "trovato descriptor");
// prefer notify over indicate
if ((characteristic.getProperties() & BluetoothGattCharacteristic.PROPERTY_NOTIFY) != 0) {
Log.d(LOG_TAG, "Characteristic " + characteristicUUID + " set NOTIFY");
descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
} else if ((characteristic.getProperties()
& BluetoothGattCharacteristic.PROPERTY_INDICATE)
!= 0) {
Log.d(LOG_TAG, "Characteristic " + characteristicUUID + " set INDICATE");
descriptor.setValue(BluetoothGattDescriptor.ENABLE_INDICATION_VALUE);
} else {
Log.d(
LOG_TAG,
"Characteristic "
+ characteristicUUID
+ " does not have NOTIFY or INDICATE property set");
}
if (gatt.writeDescriptor(descriptor)) {
// Tutto ok
Log.d(LOG_TAG, "registerNotify completato");
success.invoke();
} else {
fail.invoke(
"Failed to set client characteristic notification for " + characteristicUUID);
}
} else {
fail.invoke("Set notification failed for " + characteristicUUID);
}
} else {
fail.invoke("Failed to register notification for " + characteristicUUID);
}
} else {
fail.invoke("Characteristic " + characteristicUUID + " not found");
}
}