Java Code Examples for android.bluetooth.BluetoothGatt#STATE_DISCONNECTED

/**
 * Disconnects from the device or cancels the pending connection attempt. Does nothing if device was not connected.
 * @return true if device is to be disconnected. False if it was already disconnected.
 */
public boolean disconnect() {
	userDisconnected = true;
	initialConnection = false;

	if (bluetoothGatt != null) {
		connectionState = BluetoothGatt.STATE_DISCONNECTING;
		callbacks.onDeviceDisconnecting(bluetoothGatt.getDevice());
		final boolean wasConnected = connected;
		bluetoothGatt.disconnect();

		if (!wasConnected) {
			// There will be no callback, the connection attempt will be stopped
			connectionState = BluetoothGatt.STATE_DISCONNECTED;
			callbacks.onDeviceDisconnected(bluetoothGatt.getDevice());
		}
		return true;
	}
	return false;
}
 

@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
    super.onConnectionStateChange(gatt, status, newState);
    if (newState == BluetoothGatt.STATE_CONNECTED) {
        writeLine("Connected!");
        // Discover services.
        if (!gatt.discoverServices()) {
            writeLine("Failed to start discovering services!");
        }
    }
    else if (newState == BluetoothGatt.STATE_DISCONNECTED) {
        writeLine("Disconnected!");
    }
    else {
        writeLine("Connection state changed.  New state: " + newState);
    }
}
 

@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
    super.onConnectionStateChange(gatt, status, newState);
    if (newState == BluetoothGatt.STATE_CONNECTED) {
        if (status == BluetoothGatt.GATT_SUCCESS) {
            // Connected to device, start discovering services.
            if (!gatt.discoverServices()) {
                // Error starting service discovery.
                connectFailure();
            }
        } else {
            // Error connecting to device.
            connectFailure();
        }
    } else if (newState == BluetoothGatt.STATE_DISCONNECTED) {
        // Disconnected, notify callbacks of disconnection.
        rx = null;
        tx = null;
        notifyOnDisconnected(context);
    }
}
 

private void closeGatt() {

        if (gatt != null) {

            Timber.d("gatt device: %s, connected devices: %d", gatt.getDevice().getAddress(), bluetoothManager.getConnectedDevices(BluetoothProfile.GATT).size());
            ThunderBoardDevice device = getDeviceFromCache(gatt.getDevice().getAddress());
            if (device != null) {
                device.clear();
            }

            if (BluetoothGatt.STATE_DISCONNECTED == bluetoothManager.getConnectionState(gatt.getDevice(), BluetoothProfile.GATT)) {
                Timber.d("close");
                gatt.close();
            } else {
                Timber.d("disconnect");
                gatt.disconnect();
            }

            gatt = null;
        }
        for (int i = 0; i < devices.size(); i++) {
            Timber.d("device: %s", devices.get(i).getAddress());
        }
    }
 

/**
 * 连接状态改变，主要用来分析设备的连接与断开
 * @param gatt GATT
 * @param status 改变前状态
 * @param newState 改变后状态
 */
@Override
public void onConnectionStateChange(final BluetoothGatt gatt, final int status, final int newState) {
    ViseLog.i("onConnectionStateChange  status: " + status + " ,newState: " + newState +
            "  ,thread: " + Thread.currentThread());
    if (newState == BluetoothGatt.STATE_CONNECTED) {
        gatt.discoverServices();
    } else if (newState == BluetoothGatt.STATE_DISCONNECTED) {
        close();
        if (connectCallback != null) {
            if (handler != null) {
                handler.removeCallbacksAndMessages(null);
            }
            ViseBle.getInstance().getDeviceMirrorPool().removeDeviceMirror(deviceMirror);
            if (status == BluetoothGatt.GATT_SUCCESS) {
                connectState = ConnectState.CONNECT_DISCONNECT;
                connectCallback.onDisconnect(isActiveDisconnect);
            } else {
                connectState = ConnectState.CONNECT_FAILURE;
                connectCallback.onConnectFailure(new ConnectException(gatt, status));
            }
        }
    } else if (newState == BluetoothGatt.STATE_CONNECTING) {
        connectState = ConnectState.CONNECT_PROCESS;
    }
}
 

/**
 * Disconnects from the sensor.
 */
public final void disconnect() {
    final int state = bleManager.getConnectionState();
    if (state == BluetoothGatt.STATE_DISCONNECTED || state == BluetoothGatt.STATE_DISCONNECTING) {
        bleManager.close();
        onDeviceDisconnected(bluetoothDevice);
        return;
    }

    bleManager.disconnect().enqueue();
}
 

public int getNativeConnectionState()
{
	//--- > RB If BT has been turned off quickly (for instance, there are many devices connected, then you go into BT settings and run a scan), then
	// 			we obviously won't be able to get a state. We return DISCONNECTED here for obvious reasons.
	if (getManager().m_config.nativeManagerLayer.isBluetoothEnabled())
	{
		return m_device.layerManager().getManagerLayer().getConnectionState(m_device_native, BluetoothGatt.GATT_SERVER);
	}
	else
	{
		return BluetoothGatt.STATE_DISCONNECTED;
	}
}
 

@Override
public void onConnectionStateChange(BluetoothDevice device, final int status, int newState) {
  super.onConnectionStateChange(device, status, newState);
  if (status == BluetoothGatt.GATT_SUCCESS) {
    if (newState == BluetoothGatt.STATE_CONNECTED) {
      mBluetoothDevices.add(device);
      updateConnectedDevicesStatus();
      Log.v(TAG, "Connected to device: " + device.getAddress());
    } else if (newState == BluetoothGatt.STATE_DISCONNECTED) {
      mBluetoothDevices.remove(device);
      updateConnectedDevicesStatus();
      Log.v(TAG, "Disconnected from device");
    }
  } else {
    mBluetoothDevices.remove(device);
    updateConnectedDevicesStatus();
    // There are too many gatt errors (some of them not even in the documentation) so we just
    // show the error to the user.
    final String errorMessage = getString(R.string.status_errorWhenConnecting) + ": " + status;
    runOnUiThread(new Runnable() {
      @Override
      public void run() {
        Toast.makeText(Peripheral.this, errorMessage, Toast.LENGTH_LONG).show();
      }
    });
    Log.e(TAG, "Error when connecting: " + status);
  }
}
 

public int getNativeConnectionState()
{
	//--- > RB If BT has been turned off quickly (for instance, there are many devices connected, then you go into BT settings and run a scan), then
	// 			we obviously won't be able to get a state. We return DISCONNECTED here for obvious reasons.
	if (getManager().m_config.nativeManagerLayer.isBluetoothEnabled())
	{
		return m_device.layerManager().getManagerLayer().getConnectionState(m_device_native, BluetoothGatt.GATT_SERVER);
	}
	else
	{
		return BluetoothGatt.STATE_DISCONNECTED;
	}
}
 

@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
    super.onConnectionStateChange(gatt, status, newState);
    if (newState == BluetoothGatt.STATE_DISCONNECTED || newState == BluetoothGatt.STATE_DISCONNECTING) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                disconnectWithModal();
            }
        });
    }
}
 

@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {

    if (status != BluetoothGatt.GATT_SUCCESS) {
        if (getOADProfile().uploadInProgress()) {
            // Since an OAD update is currently in progress, only alert the OAD Profile
            // of the Bean disconnecting, not the ConnectionListener(s)
            getOADProfile().onBeanConnectionFailed();
        } else {
            connectionListener.onConnectionFailed();
        }

        mConnected = false;
        return;
    }

    if (newState == BluetoothGatt.STATE_CONNECTED) {
        mConnected = true;

        // Bean is connected, before alerting the ConnectionListener(s), we must
        // discover available services (lookup GATT table).
        Log.i(TAG, "Discovering Services!");
        mGatt.discoverServices();
    }

    if (newState == BluetoothGatt.STATE_DISCONNECTED) {
        mOperationsQueue.clear();
        mOperationInProgress = false;
        mConnected = false;
        connectionListener.onDisconnected();
        for (BaseProfile profile : mProfiles) {
            profile.onBeanDisconnected();
        }
    }
}
 

private void connectionFailed(int status) {
    BluetoothGattCallback current;
    int oldState;
    int newState;
    LinkedList<BluetoothGattCallback> queueCopy;

    BluetoothGatt oldGatt;
    synchronized (lock) {
        oldState = state;
        state = BluetoothGatt.STATE_DISCONNECTED;
        newState = state;
        serviceDiscovered = false;
        current = currentCallback;
        queueCopy = new LinkedList<>(queue);

        oldGatt = this.gatt;
        this.gatt = null;
    }

    NeatleLogger.i("Connection attempt failed. Notifying all pending operations");

    current.onConnectionStateChange(oldGatt, status, BluetoothGatt.STATE_DISCONNECTED);

    for (BluetoothGattCallback cb : queueCopy) {
        cb.onConnectionStateChange(oldGatt, status, BluetoothGatt.STATE_DISCONNECTED);
    }

    notifyConnectionStateChange(oldState, newState);
}
 

private void notifyDeviceDisconnected(final BluetoothDevice device) {
	connected = false;
	connectionState = BluetoothGatt.STATE_DISCONNECTED;
	if (userDisconnected) {
		callbacks.onDeviceDisconnected(device);
		close();
	} else {
		callbacks.onLinklossOccurred(device);
		// We are not closing the connection here as the device should try to reconnect automatically.
		// This may be only called when the shouldAutoConnect() method returned true.
	}
	if (profile != null)
		profile.release();
}
 

private void notifyDeviceDisconnected(@NonNull final BluetoothDevice device, final int status) {
	final boolean wasConnected = connected;
	connected = false;
	servicesDiscovered = false;
	serviceDiscoveryRequested = false;
	deviceNotSupported = false;
	initInProgress = false;
	connectionState = BluetoothGatt.STATE_DISCONNECTED;
	checkCondition();
	if (!wasConnected) {
		log(Log.WARN, "Connection attempt timed out");
		close();
		postCallback(c -> c.onDeviceDisconnected(device));
		postConnectionStateChange(o -> o.onDeviceFailedToConnect(device, status));
		// ConnectRequest was already notified
	} else if (userDisconnected) {
		log(Log.INFO, "Disconnected");
		close();
		postCallback(c -> c.onDeviceDisconnected(device));
		postConnectionStateChange(o -> o.onDeviceDisconnected(device, status));
		final Request request = this.request;
		if (request != null && request.type == Request.Type.DISCONNECT) {
			request.notifySuccess(device);
		}
	} else {
		log(Log.WARN, "Connection lost");
		postCallback(c -> c.onLinkLossOccurred(device));
		postConnectionStateChange(o -> o.onDeviceDisconnected(device, ConnectionObserver.REASON_LINK_LOSS));
		// We are not closing the connection here as the device should try to reconnect
		// automatically.
		// This may be only called when the shouldAutoConnect() method returned true.
	}
	onDeviceDisconnected();
}
 

@Override
 public void onConnectionStateChange(final BluetoothGatt gatt, final int status, final int newState) { 
 	if (newState ==  BluetoothGatt.STATE_DISCONNECTED)
 	{
Log.e("H7ConnectThread", "device Disconnected");
ac.connectionError();
 	}
 	else{
gatt.discoverServices();
Log.d("H7ConnectThread", "Connected and discovering services");
 	}
 }
 

@Override
        public void onConnectionStateChange(final BluetoothGatt gatt, final int status, final int newState) {
            // Check whether an error occurred
            logi("onConnectionStateChange() :: Start");
            if (status == BluetoothGatt.GATT_SUCCESS) {
                if (newState == BluetoothGatt.STATE_CONNECTED) {
                    logi("onConnectionStateChange() :: Connected to GATT server");
                    mConnectionState = STATE_CONNECTED;

					/*
                     *  The onConnectionStateChange callback is called just after establishing connection and before sending Encryption Request BLE event in case of a paired device.
					 *  In that case and when the Service Changed CCCD is enabled we will get the indication after initializing the encryption, about 1600 milliseconds later. 
					 *  If we discover services right after connecting, the onServicesDiscovered callback will be called immediately, before receiving the indication and the following 
					 *  service discovery and we may end up with old, application's services instead.
					 *  
					 *  This is to support the buttonless switch from application to bootloader mode where the DFU bootloader notifies the master about service change.
					 *  Tested on Nexus 4 (Android 4.4.4 and 5), Nexus 5 (Android 5), Samsung Note 2 (Android 4.4.2). The time after connection to end of service discovery is about 1.6s 
					 *  on Samsung Note 2.
					 *  
					 *  NOTE: We are doing this to avoid the hack with calling the hidden gatt.refresh() method, at least for bonded devices.
					 */
                    if (gatt.getDevice().getBondState() == BluetoothDevice.BOND_BONDED) {
                        try {
                            synchronized (this) {
                                logd("onConnectionStateChange() :: Waiting 1600 ms for a possible Service Changed indication...");
                                wait(1600);

                                // After 1.6s the services are already discovered so the following gatt.discoverServices() finishes almost immediately.

                                // NOTE: This also works with shorted waiting time. The gatt.discoverServices() must be called after the indication is received which is
                                // about 600ms after establishing connection. Values 600 - 1600ms should be OK.
                            }
                        } catch (InterruptedException e) {
                            Log.e(TAG, e.toString());
                            // Do nothing
                        }
                    }

                    // Attempts to discover services after successful connection.
                    final boolean success = gatt.discoverServices();
                    logi("onConnectionStateChange() :: Attempting to start service discovery... " + (success ? "succeed" : "failed"));

                    if (!success) {
                        mError = ERROR_SERVICE_DISCOVERY_NOT_STARTED;
                    } else {
                        // Just return here, lock will be notified when service discovery finishes
                        return;
                    }
                } else if (newState == BluetoothGatt.STATE_DISCONNECTED) {
                    logi("onConnectionStateChange() :: Disconnected from GATT server");
                    mPaused = false;
                    mConnectionState = STATE_DISCONNECTED;
                }
            } else {
                loge("Connection state change error: " + status + " newState: " + newState);
/*				if (newState == BluetoothGatt.STATE_DISCONNECTED) {
                    mConnectionState = STATE_DISCONNECTED;
                    if (mServicePhase == PAIRING_REQUEST ){
                        mServicePhase = PAIRING_FAILED ;
                        updateProgressNotification(status);
                    }
                }*/
                mPaused = false;
                mError = ERROR_CONNECTION_STATE_MASK | status;
            }

            // Notify waiting thread
            synchronized (mLock) {
                mLock.notifyAll();
            }
        }
 

private int performGetNativeState(AtomicInteger state, CountDownLatch latch)
{
	final int reportedNativeConnectionState = getNativeConnectionState();
	int connectedStateThatWeWillGoWith = reportedNativeConnectionState;

	if( m_nativeConnectionState != null && m_nativeConnectionState.get() != -1 )
	{
		if( m_nativeConnectionState.get() != reportedNativeConnectionState )
		{
			getLogger().e("Tracked native state " + getLogger().gattConn(m_nativeConnectionState.get()) + " doesn't match reported state " + getLogger().gattConn(reportedNativeConnectionState) + ".");
		}

		connectedStateThatWeWillGoWith = m_nativeConnectionState.get();
	}

	if( connectedStateThatWeWillGoWith != BluetoothGatt.STATE_DISCONNECTED )
	{
		if( gattLayer().isGattNull() )
		{
			//--- DRK > Can't assert here because gatt can legitmately be null even though we have a connecting/ed native state.
			//---		This was observed on the moto G right after app start up...getNativeConnectionState() reported connecting/ed
			//---		but we haven't called connect yet. Really rare...only seen once after 4 months.
			if( m_nativeConnectionState == null )
			{
				getLogger().e("Gatt is null with " + getLogger().gattConn(connectedStateThatWeWillGoWith));

				connectedStateThatWeWillGoWith = BluetoothGatt.STATE_DISCONNECTED;

				getManager().uhOh(UhOh.CONNECTED_WITHOUT_EVER_CONNECTING);
			}
			else
			{
				getManager().ASSERT(false, "Gatt is null with tracked native state: " + getLogger().gattConn(connectedStateThatWeWillGoWith));
			}
		}
	}
	else
	{
		//--- DRK > Had this assert here but must have been a brain fart because we can be disconnected
		//---		but still have gatt be not null cause we're trying to reconnect.
		//			if( !m_mngr.ASSERT(m_gatt == null) )
		//			{
		//				m_logger.e(m_logger.gattConn(connectedStateThatWeWillGoWith));
		//			}
	}
	if (state != null)
	{
		state.set(connectedStateThatWeWillGoWith);
	}
	if (latch != null)
	{
		latch.countDown();
	}
	return connectedStateThatWeWillGoWith;
}
 

/**
 * Returns the connection state of given device.
 * @param device the target device
 * @return the connection state, as in {@link BleManager#getConnectionState()}.
 */
@SuppressWarnings("unused")
public final int getConnectionState(final BluetoothDevice device) {
	final BleManager manager = bleManagers.get(device);
	return manager != null ? manager.getConnectionState() : BluetoothGatt.STATE_DISCONNECTED;
}
 

private int performGetNativeState(AtomicInteger state, CountDownLatch latch)
{
	final int reportedNativeConnectionState = getNativeConnectionState();
	int connectedStateThatWeWillGoWith = reportedNativeConnectionState;

	if( m_nativeConnectionState != null && m_nativeConnectionState.get() != -1 )
	{
		if( m_nativeConnectionState.get() != reportedNativeConnectionState )
		{
			getLogger().e("Tracked native state " + getLogger().gattConn(m_nativeConnectionState.get()) + " doesn't match reported state " + getLogger().gattConn(reportedNativeConnectionState) + ".");
		}

		connectedStateThatWeWillGoWith = m_nativeConnectionState.get();
	}

	if( connectedStateThatWeWillGoWith != BluetoothGatt.STATE_DISCONNECTED )
	{
		if( gattLayer().isGattNull() )
		{
			//--- DRK > Can't assert here because gatt can legitmately be null even though we have a connecting/ed native state.
			//---		This was observed on the moto G right after app start up...getNativeConnectionState() reported connecting/ed
			//---		but we haven't called connect yet. Really rare...only seen once after 4 months.
			if( m_nativeConnectionState == null )
			{
				getLogger().e("Gatt is null with " + getLogger().gattConn(connectedStateThatWeWillGoWith));

				connectedStateThatWeWillGoWith = BluetoothGatt.STATE_DISCONNECTED;

				getManager().uhOh(UhOh.CONNECTED_WITHOUT_EVER_CONNECTING);
			}
			else
			{
				getManager().ASSERT(false, "Gatt is null with tracked native state: " + getLogger().gattConn(connectedStateThatWeWillGoWith));
			}
		}
	}
	else
	{
		//--- DRK > Had this assert here but must have been a brain fart because we can be disconnected
		//---		but still have gatt be not null cause we're trying to reconnect.
		//			if( !m_mngr.ASSERT(m_gatt == null) )
		//			{
		//				m_logger.e(m_logger.gattConn(connectedStateThatWeWillGoWith));
		//			}
	}
	if (state != null)
	{
		state.set(connectedStateThatWeWillGoWith);
	}
	if (latch != null)
	{
		latch.countDown();
	}
	return connectedStateThatWeWillGoWith;
}
 

/**
 * if we are connecting it start to scan the device service/characteristics otherwise it
 * change the node status to idle or unreachable.
 * if there is an error the node status go to dead
 * @param gatt connection with the device
 * @param status command status
 * @param newState new node status
 */
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState){
    Log.d(TAG,"Node: "+Node.this.getName()+" Status: "+status+" newState: " +
            ""+newState+" boundState:"+mDevice.getBondState());
    if(status==BluetoothGatt.GATT_SUCCESS){
        if(newState==BluetoothGatt.STATE_CONNECTED){
                if (!isPairing()) { //if it is pairing we do it when it finish
                    //wait a bit for see if we will do the secure pairing or not,
                    //if the device will be in pair status the scan is aborted and will be
                    //done when the pairing will be completed
                    mBleThread.postDelayed(mScanServicesTask, RETRY_COMMAND_DELAY_MS);
                }//if !pairing
        }else if (newState == BluetoothGatt.STATE_DISCONNECTED){
            //if the auto connect is on, avoid to close and free resources
            if(!mConnectionOption.enableAutoConnect()) {
                if (mConnection != null) {
                    if(mConnectionOption.resetCache())
                        refreshDeviceCache(mConnection);
                    if (mGattServer != null) {
                        mGattServer.disconnect();
                    }
                    mConnection.close();
                }//if
                cleanConnectionData();
            }
            if (mUserAskToDisconnect){
                //disconnect completed
                Node.this.updateNodeStatus(State.Idle);
            }else{
                //we disconnect but the user didn't ask it
                Node.this.updateNodeStatus(State.Unreachable);
            }//if else
        }//if-else
    }else{
        //https://stackoverflow.com/questions/33718807/forcefully-turning-off-ble-device-connected-to-android-app-fires-onconnectionsta
        if(status==8 && // 8 = link lost
                newState == BluetoothGatt.STATE_DISCONNECTED &&
                mConnectionOption.enableAutoConnect()){
            Node.this.updateNodeStatus(State.Unreachable);
            return;
        }
        //close & clean the dead connection
        if(mConnection!=null) {
            if (mGattServer != null) {
                mGattServer.disconnect();
            }
            mConnection.close();
        }//if
        cleanConnectionData();
        //notify to the user
        Node.this.updateNodeStatus(State.Dead);
    }//if status
}