1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 package com.android.car.trust; 17 18 import android.bluetooth.BluetoothGattCharacteristic; 19 import android.bluetooth.BluetoothGattService; 20 import android.content.Context; 21 22 import java.nio.ByteBuffer; 23 import java.util.UUID; 24 25 public class Utils { 26 27 public static byte[] getBytes(long l) { 28 ByteBuffer buffer = ByteBuffer.allocate(Long.SIZE / Byte.SIZE); 29 buffer.putLong(0, l); 30 return buffer.array(); 31 } 32 33 public static long getLong(byte[] bytes) { 34 ByteBuffer buffer = ByteBuffer.allocate(Long.SIZE / Byte.SIZE); 35 buffer.put(bytes); 36 buffer.flip(); 37 return buffer.getLong(); 38 } 39 40 public static BluetoothGattCharacteristic getCharacteristic(int uuidRes, 41 BluetoothGattService service, Context context) { 42 return service.getCharacteristic(UUID.fromString(context.getString(uuidRes))); 43 } 44 } 45
