https://source.android.com/ 
/*
 * Copyright (C) 2017 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 android.bluetooth;


This abstract class is used to implement BluetoothGatt callbacks. 
/**
 * This abstract class is used to implement {@link BluetoothGatt} callbacks.
 */
public abstract class BluetoothGattCallback {

    
Callback triggered as result of BluetoothGatt.setPreferredPhy, or as a result of remote device changing the PHY. 
Params:
/**
     * Callback triggered as result of {@link BluetoothGatt#setPreferredPhy}, or as a result of
     * remote device changing the PHY.
     *
     * @param gatt GATT client
     * @param txPhy the transmitter PHY in use. One of {@link BluetoothDevice#PHY_LE_1M}, {@link
     * BluetoothDevice#PHY_LE_2M}, and {@link BluetoothDevice#PHY_LE_CODED}.
     * @param rxPhy the receiver PHY in use. One of {@link BluetoothDevice#PHY_LE_1M}, {@link
     * BluetoothDevice#PHY_LE_2M}, and {@link BluetoothDevice#PHY_LE_CODED}.
     * @param status Status of the PHY update operation. {@link BluetoothGatt#GATT_SUCCESS} if the
     * operation succeeds.
     */
    public void onPhyUpdate(BluetoothGatt gatt, int txPhy, int rxPhy, int status) {
    }

    
Callback triggered as result of BluetoothGatt.readPhy 
Params:
/**
     * Callback triggered as result of {@link BluetoothGatt#readPhy}
     *
     * @param gatt GATT client
     * @param txPhy the transmitter PHY in use. One of {@link BluetoothDevice#PHY_LE_1M}, {@link
     * BluetoothDevice#PHY_LE_2M}, and {@link BluetoothDevice#PHY_LE_CODED}.
     * @param rxPhy the receiver PHY in use. One of {@link BluetoothDevice#PHY_LE_1M}, {@link
     * BluetoothDevice#PHY_LE_2M}, and {@link BluetoothDevice#PHY_LE_CODED}.
     * @param status Status of the PHY read operation. {@link BluetoothGatt#GATT_SUCCESS} if the
     * operation succeeds.
     */
    public void onPhyRead(BluetoothGatt gatt, int txPhy, int rxPhy, int status) {
    }

    
Callback indicating when GATT client has connected/disconnected to/from a remote
GATT server.

Params:
/**
     * Callback indicating when GATT client has connected/disconnected to/from a remote
     * GATT server.
     *
     * @param gatt GATT client
     * @param status Status of the connect or disconnect operation. {@link
     * BluetoothGatt#GATT_SUCCESS} if the operation succeeds.
     * @param newState Returns the new connection state. Can be one of {@link
     * BluetoothProfile#STATE_DISCONNECTED} or {@link BluetoothProfile#STATE_CONNECTED}
     */
    public void onConnectionStateChange(BluetoothGatt gatt, int status,
            int newState) {
    }

    
Callback invoked when the list of remote services, characteristics and descriptors
for the remote device have been updated, ie new services have been discovered.

Params:
/**
     * Callback invoked when the list of remote services, characteristics and descriptors
     * for the remote device have been updated, ie new services have been discovered.
     *
     * @param gatt GATT client invoked {@link BluetoothGatt#discoverServices}
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if the remote device has been explored
     * successfully.
     */
    public void onServicesDiscovered(BluetoothGatt gatt, int status) {
    }

    
Callback reporting the result of a characteristic read operation.

Params:
/**
     * Callback reporting the result of a characteristic read operation.
     *
     * @param gatt GATT client invoked {@link BluetoothGatt#readCharacteristic}
     * @param characteristic Characteristic that was read from the associated remote device.
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if the read operation was completed
     * successfully.
     */
    public void onCharacteristicRead(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic,
            int status) {
    }

    
Callback indicating the result of a characteristic write operation.

If this callback is invoked while a reliable write transaction is
in progress, the value of the characteristic represents the value
reported by the remote device. An application should compare this
value to the desired value to be written. If the values don't match,
the application must abort the reliable write transaction.

Params:
/**
     * Callback indicating the result of a characteristic write operation.
     *
     * <p>If this callback is invoked while a reliable write transaction is
     * in progress, the value of the characteristic represents the value
     * reported by the remote device. An application should compare this
     * value to the desired value to be written. If the values don't match,
     * the application must abort the reliable write transaction.
     *
     * @param gatt GATT client invoked {@link BluetoothGatt#writeCharacteristic}
     * @param characteristic Characteristic that was written to the associated remote device.
     * @param status The result of the write operation {@link BluetoothGatt#GATT_SUCCESS} if the
     * operation succeeds.
     */
    public void onCharacteristicWrite(BluetoothGatt gatt,
            BluetoothGattCharacteristic characteristic, int status) {
    }

    
Callback triggered as a result of a remote characteristic notification.

Params:
  • gatt – GATT client the characteristic is associated with
  • characteristic – Characteristic that has been updated as a result of a remote
notification event.
/**
     * Callback triggered as a result of a remote characteristic notification.
     *
     * @param gatt GATT client the characteristic is associated with
     * @param characteristic Characteristic that has been updated as a result of a remote
     * notification event.
     */
    public void onCharacteristicChanged(BluetoothGatt gatt,
            BluetoothGattCharacteristic characteristic) {
    }

    
Callback reporting the result of a descriptor read operation.

Params:
/**
     * Callback reporting the result of a descriptor read operation.
     *
     * @param gatt GATT client invoked {@link BluetoothGatt#readDescriptor}
     * @param descriptor Descriptor that was read from the associated remote device.
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if the read operation was completed
     * successfully
     */
    public void onDescriptorRead(BluetoothGatt gatt, BluetoothGattDescriptor descriptor,
            int status) {
    }

    
Callback indicating the result of a descriptor write operation.

Params:
/**
     * Callback indicating the result of a descriptor write operation.
     *
     * @param gatt GATT client invoked {@link BluetoothGatt#writeDescriptor}
     * @param descriptor Descriptor that was writte to the associated remote device.
     * @param status The result of the write operation {@link BluetoothGatt#GATT_SUCCESS} if the
     * operation succeeds.
     */
    public void onDescriptorWrite(BluetoothGatt gatt, BluetoothGattDescriptor descriptor,
            int status) {
    }

    
Callback invoked when a reliable write transaction has been completed.

Params:
/**
     * Callback invoked when a reliable write transaction has been completed.
     *
     * @param gatt GATT client invoked {@link BluetoothGatt#executeReliableWrite}
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if the reliable write transaction was
     * executed successfully
     */
    public void onReliableWriteCompleted(BluetoothGatt gatt, int status) {
    }

    
Callback reporting the RSSI for a remote device connection. This callback is triggered in response to the BluetoothGatt.readRemoteRssi function. 
Params:
/**
     * Callback reporting the RSSI for a remote device connection.
     *
     * This callback is triggered in response to the
     * {@link BluetoothGatt#readRemoteRssi} function.
     *
     * @param gatt GATT client invoked {@link BluetoothGatt#readRemoteRssi}
     * @param rssi The RSSI value for the remote device
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if the RSSI was read successfully
     */
    public void onReadRemoteRssi(BluetoothGatt gatt, int rssi, int status) {
    }

    
Callback indicating the MTU for a given device connection has changed. This callback is triggered in response to the BluetoothGatt.requestMtu function, or in response to a connection event. 
Params:
/**
     * Callback indicating the MTU for a given device connection has changed.
     *
     * This callback is triggered in response to the
     * {@link BluetoothGatt#requestMtu} function, or in response to a connection
     * event.
     *
     * @param gatt GATT client invoked {@link BluetoothGatt#requestMtu}
     * @param mtu The new MTU size
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if the MTU has been changed successfully
     */
    public void onMtuChanged(BluetoothGatt gatt, int mtu, int status) {
    }

    
Callback indicating the connection parameters were updated.

Params:
  • gatt – GATT client involved
  • interval – Connection interval used on this connection, 1.25ms unit. Valid range is from
6 (7.5ms) to 3200 (4000ms).
  • latency – Slave latency for the connection in number of connection events. Valid range
is from 0 to 499
  • timeout – Supervision timeout for this connection, in 10ms unit. Valid range is from 10
(0.1s) to 3200 (32s)
  • status – BluetoothGatt.GATT_SUCCESS if the connection has been updated successfully
@hide
/**
     * Callback indicating the connection parameters were updated.
     *
     * @param gatt GATT client involved
     * @param interval Connection interval used on this connection, 1.25ms unit. Valid range is from
     * 6 (7.5ms) to 3200 (4000ms).
     * @param latency Slave latency for the connection in number of connection events. Valid range
     * is from 0 to 499
     * @param timeout Supervision timeout for this connection, in 10ms unit. Valid range is from 10
     * (0.1s) to 3200 (32s)
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if the connection has been updated
     * successfully
     * @hide
     */
    public void onConnectionUpdated(BluetoothGatt gatt, int interval, int latency, int timeout,
            int status) {
    }
}