Java BluetoothGatt類代碼示例

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
@Override
protected void start(Connection connection, BluetoothGatt gatt) {
    BluetoothGattService service = gatt.getService(serviceUUID);
    if (service != null) {
        BluetoothGattCharacteristic characteristic = service.getCharacteristic(characteristicUUID);
        if (characteristic != null) {
            NeatleLogger.d("Reading characteristics " + characteristicUUID);
            if (gatt.readCharacteristic(characteristic)) {
                return;
            }
            NeatleLogger.d("Read failed" + characteristicUUID);
        } else {
            NeatleLogger.e("Could not find characteristics " + characteristicUUID);
        }
    } else {
        NeatleLogger.e("Could not find service " + serviceUUID);
    }

    finish(CommandResult.createErrorResult(characteristicUUID, BluetoothGatt.GATT_FAILURE));
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
	String intentAction;
	if (newState == BluetoothProfile.STATE_CONNECTED) {
		intentAction = ACTION_CONNECTED;
		connectionState = STATE_CONNECTED;
		broadcastUpdate(intentAction);
		Log.i(TAG, "Connected to GATT server.");
		Log.i(TAG, "Attempting to start service discovery:" + bluetoothGatt.discoverServices());

	} else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
		intentAction = ACTION_DISCONNECTED;
		connectionState = STATE_DISCONNECTED;
		Log.i(TAG, "Disconnected from GATT server.");
		broadcastUpdate(intentAction);
	}
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
    if (this.mGatt != gatt) {
        this.mGatt = gatt;
    }
    if (newState == 2) {
        QNLog.log("連接設備成功");
        this.qnDecoder = null;
        this.mGatt.discoverServices();
    } else if (newState == 0) {
        this.mGatt.close();
        this.uiHandler.post(new 1 (this));
        this.qnDecoder = null;
    } else {
        gatt.disconnect();
        QNLog.error("連接狀態異常:", Integer.valueOf(status));
        this.uiHandler.post(new 2 (this));
        if (this.bleCallback != null) {
            this.bleCallback.onCompete(5);
        }
    }
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
/**
 * 相當於一個監聽器, 當藍牙設備有數據返回時執行
 *
 * @param gatt
 * @param characteristic
 */
@Override
public void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
    Log.e(TAG, "onCharacteristicChanged 返回數據: " + Arrays.toString(characteristic.getValue()));
    Message message = new Message();
    message.what = Constant.RESULT_DATA;
    message.obj = characteristic.getValue();
    handler.sendMessage(message);
    //回調
    onCharacteristicRefresh(gatt, characteristic);
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
@Override
public void onCharacteristicWrite(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {
	super.onCharacteristicWrite(gatt, characteristic, status);

	if (writeCallback != null) {

		if (writeQueue.size() > 0){
			byte[] data = writeQueue.get(0);
			writeQueue.remove(0);
			doWrite(characteristic, data);
		} else {

			if (status == BluetoothGatt.GATT_SUCCESS) {
				writeCallback.invoke();
			} else {
				Log.e(LOG_TAG, "Error onCharacteristicWrite:" + status);
				writeCallback.invoke("Error writing status: " + status);
			}

			writeCallback = null;
		}
	}else
		Log.e(LOG_TAG, "No callback on write");
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
    super.onConnectionStateChange(gatt, status, newState);

    Log.d("BLUETOOTH", "Estado de conexión bluetooth: " + (newState == BluetoothProfile.STATE_CONNECTED ? "Connected" : "Disconnected"));

    if(newState == BluetoothProfile.STATE_CONNECTED){
        //setState(State.CONNECTED);
        mBluetoothGatt.discoverServices();
    }
    else{
        //setState(State.IDDLE);
        //TODO Realizar todas las tareas necesarias cuando se desconecte la pulsera
        Log.d("BLUETOOTH", "Se ha desconectado el dispostivo bluetooth");
    }
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
private boolean obtenerCaracteristicasDescriptoresAccelGyroCC2650(BluetoothGatt gatt){
    boolean todoCorrecto = false;

    BluetoothGattService acelerometroService = gatt.getService(UUID_MOVEMENT_SERVICE);
    if(acelerometroService != null){
        this.movementCharacteristic = acelerometroService.getCharacteristic(UUID_MOVEMENT_DATA);
        this.movementConf = acelerometroService.getCharacteristic(UUID_MOVEMENT_CONF);
        this.movementPeriod = acelerometroService.getCharacteristic(UUID_MOVEMENT_PERIOD);

        if(movementCharacteristic != null && movementConf != null){
            this.config = movementCharacteristic.getDescriptor(UUID_CCC);
            todoCorrecto = true;
        }
    }

    return todoCorrecto;
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
/**
  * Clears the device cache. After uploading new hello4 the DFU target will have other services than before.
  * 清除設備緩存。 在上傳新的hello4之後，DFU目標將具有比以前更多的服務。
  */
 public boolean refreshDeviceCache() {
     /*
      * There is a refresh() method in BluetoothGatt class but for now it's hidden. We will call it using reflections.
      * 使用反射調用
*/
     try {
         final Method refresh = BluetoothGatt.class.getMethod("refresh");
         if (refresh != null) {
             final boolean success = (Boolean) refresh.invoke(getBluetoothGatt());
             Log.i(TAG, "Refreshing result: " + success);
             return success;
         }
     } catch (Exception e) {
         Log.e(TAG, "An exception occured while refreshing device", e);
     }
     return false;
 }
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
/**
 * Request a read on a given {@code BluetoothGattCharacteristic}. The read result is reported asynchronously through the
 * {@code BluetoothGattCallback#onCharacteristicRead(android.bluetooth.BluetoothGatt, android.bluetooth.BluetoothGattCharacteristic, int)} callback.
 *
 * @param characteristic The characteristic to read from.
 */
public void readCharacteristic(final String mac, final BluetoothGattCharacteristic characteristic) {
    try {
        voidBlockingQueue.put(new Callable<Boolean>() {
            @Override
            public Boolean call() throws Exception {
                BluetoothGatt bluetoothGatt = checkAndGetGattItem(mac);
                boolean success = false;
                if (bluetoothGatt != null && characteristic != null) {
                    success = bluetoothGatt.readCharacteristic(characteristic);
                }
                return success;
            }
        });

    } catch (InterruptedException e) {
        if (BuildConfig.DEBUG)
            Log.e(TAG, "readCharacteristic: " + e.getMessage());
    }
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
    if (status == BluetoothGatt.GATT_SUCCESS) {
        boolean connected = false;

        BluetoothGattService service = gatt.getService(SERVICE_UUID);
        if (service != null) {
            BluetoothGattCharacteristic characteristic = service.getCharacteristic(CHARACTERISTIC_COUNTER_UUID);
            if (characteristic != null) {
                gatt.setCharacteristicNotification(characteristic, true);

                BluetoothGattDescriptor descriptor = characteristic.getDescriptor(DESCRIPTOR_CONFIG);
                if (descriptor != null) {
                    descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
                    connected = gatt.writeDescriptor(descriptor);
                }
            }
        }
        mListener.onConnected(connected);
    } else {
        Log.w(TAG, "onServicesDiscovered received: " + status);
    }
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
/**
 * 處理向特征碼寫入數據的回調
 * @param bleCallback
 */
private void handleCharacteristicWriteCallback(final BleCharactCallback bleCallback) {
    if (bleCallback != null) {
        // 添加連接回調到LiteBluetooth的回調集合中
        listenAndTimer(bleCallback, MSG_WRIATE_CHA, new BluetoothGattCallback() {
            @Override
            public void onCharacteristicWrite(BluetoothGatt gatt,
                                              BluetoothGattCharacteristic characteristic, int status) {
                handler.removeMessages(MSG_WRIATE_CHA, this);
                if (status == BluetoothGatt.GATT_SUCCESS) {
                    bleCallback.onSuccess(characteristic);
                } else {
                    bleCallback.onFailure(new GattException(status));
                }
            }
        });
    }
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
/**
 * Disconnects an existing connection or cancel a pending connection. The disconnection result is reported asynchronously through the
 * {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)} callback.
 */
public void disconnect(String address) {
    if (mBtAdapter == null) {
        Log.w(TAG, "disconnect: BluetoothAdapter not initialized");
        return;
    }
    final BluetoothDevice device = mBtAdapter.getRemoteDevice(address);
    int connectionState = mBluetoothManager.getConnectionState(device, BluetoothProfile.GATT);
    BluetoothGatt bluetoothGatt = checkAndGetGattItem(address);
    if (bluetoothGatt != null) {
        Log.i(TAG, "disconnect");
        if (connectionState != BluetoothProfile.STATE_DISCONNECTED) {
            bluetoothGatt.disconnect();
        } else {
            Log.w(TAG, "Attempt to disconnect in state: " + connectionState);
        }
    }
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
@Override
public final void onCharacteristicChanged(final BluetoothGatt gatt, final BluetoothGattCharacteristic characteristic) {
	final String data = ParserUtils.parse(characteristic);

	if (isBatteryLevelCharacteristic(characteristic)) {
		Logger.i(mLogSession, "Notification received from " + characteristic.getUuid() + ", value: " + data);
		final int batteryValue = characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, 0);
		Logger.a(mLogSession, "Battery level received: " + batteryValue + "%");
		mCallbacks.onBatteryValueReceived(batteryValue);
	} else {
		final BluetoothGattDescriptor cccd = characteristic.getDescriptor(CLIENT_CHARACTERISTIC_CONFIG_DESCRIPTOR_UUID);
		final boolean notifications = cccd == null || cccd.getValue() == null || cccd.getValue().length != 2 || cccd.getValue()[0] == 0x01;

		if (notifications) {
			Logger.i(mLogSession, "Notification received from " + characteristic.getUuid() + ", value: " + data);
			onCharacteristicNotified(gatt, characteristic);
		} else { // indications
			Logger.i(mLogSession, "Indication received from " + characteristic.getUuid() + ", value: " + data);
			onCharacteristicIndicated(gatt, characteristic);
		}
	}
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
@Override
protected void onCharacteristicNotified(final BluetoothGatt gatt, final BluetoothGattCharacteristic characteristic) {
	// TODO this method is called when a notification has been received
	// This method may be removed from this class if not required

	if (mLogSession != null)
		Logger.a(mLogSession, TemplateParser.parse(characteristic));

	int value;
	final int flags = characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, 0);
	if ((flags & 0x01) > 0) {
		value = characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT16, 1);
	} else {
		value = characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, 1);
	}
	//This will send callback to the Activity when new value is received from HR device
	mCallbacks.onSampleValueReceived(value);
}
 

import android.bluetooth.BluetoothGatt; //導入依賴的package包/類
@Override
public void onServicesDiscovered(final BluetoothGatt gatt, int status) {
    Logger.i("onServicesDiscovered status=" + GattError.parseConnectionError(status));
    if (status == BluetoothGatt.GATT_SUCCESS) {
        //start subscribe data
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                onDiscoverServicesSuccess(gatt);
                if (gatt != null){
                    startSubscribe(gatt);
                }
            }
        });
    }else {
        Logger.e("onServicesDiscovered fail!");
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                onDiscoverServicesFail(gatt);
            }
        });
    }
    if (getBluetoothGattCallback() != null) getBluetoothGattCallback().onServicesDiscovered(gatt, status);
}