/*
 * Copyright (C) 2014 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.le;

import java.util.List;

Bluetooth LE scan callbacks. Scan results are reported using these callbacks.
See Also:
  • startScan.startScan
/** * Bluetooth LE scan callbacks. Scan results are reported using these callbacks. * * @see BluetoothLeScanner#startScan */
public abstract class ScanCallback {
Fails to start scan as BLE scan with the same settings is already started by the app.
/** * Fails to start scan as BLE scan with the same settings is already started by the app. */
public static final int SCAN_FAILED_ALREADY_STARTED = 1;
Fails to start scan as app cannot be registered.
/** * Fails to start scan as app cannot be registered. */
public static final int SCAN_FAILED_APPLICATION_REGISTRATION_FAILED = 2;
Fails to start scan due an internal error
/** * Fails to start scan due an internal error */
public static final int SCAN_FAILED_INTERNAL_ERROR = 3;
Fails to start power optimized scan as this feature is not supported.
/** * Fails to start power optimized scan as this feature is not supported. */
public static final int SCAN_FAILED_FEATURE_UNSUPPORTED = 4;
Fails to start scan as it is out of hardware resources.
@hide
/** * Fails to start scan as it is out of hardware resources. * * @hide */
public static final int SCAN_FAILED_OUT_OF_HARDWARE_RESOURCES = 5;
Fails to start scan as application tries to scan too frequently.
@hide
/** * Fails to start scan as application tries to scan too frequently. * @hide */
public static final int SCAN_FAILED_SCANNING_TOO_FREQUENTLY = 6; static final int NO_ERROR = 0;
Callback when a BLE advertisement has been found.
Params:
/** * Callback when a BLE advertisement has been found. * * @param callbackType Determines how this callback was triggered. Could be one of {@link * ScanSettings#CALLBACK_TYPE_ALL_MATCHES}, {@link ScanSettings#CALLBACK_TYPE_FIRST_MATCH} or * {@link ScanSettings#CALLBACK_TYPE_MATCH_LOST} * @param result A Bluetooth LE scan result. */
public void onScanResult(int callbackType, ScanResult result) { }
Callback when batch results are delivered.
Params:
  • results – List of scan results that are previously scanned.
/** * Callback when batch results are delivered. * * @param results List of scan results that are previously scanned. */
public void onBatchScanResults(List<ScanResult> results) { }
Callback when scan could not be started.
Params:
  • errorCode – Error code (one of SCAN_FAILED_*) for scan failure.
/** * Callback when scan could not be started. * * @param errorCode Error code (one of SCAN_FAILED_*) for scan failure. */
public void onScanFailed(int errorCode) { } }