如何在以下代码中定义 SampleGattAttributes？

Question

public final static UUID UUID_HEART_RATE_MEASUREMENT =
                UUID.fromString(SampleGattAttributes.HEART_RATE_MEASUREMENT);

SampleGattAttributes，以红色显示，表示未解析符号。这个怎么定义？

Answer 1

我希望这对你有用。

在下面给出的包中添加 SampleGattAttributes class 并导入 class。

import java.util.HashMap;

    public class SampleGattAttributes {
        private static HashMap<String, String> attributes = new HashMap();
        public static String HEART_RATE_MEASUREMENT = "00002a37-0000-1000-8000-00805f9b34fb";
       static {
            // Sample Services.
            attributes.put("0000180d-0000-1000-8000-00805f9b34fb", "Heart Rate Service");
            // Sample Characteristics.
            attributes.put(HEART_RATE_MEASUREMENT, "Heart Rate Measurement");
        }
    }

Answer 2

我从 Official Google Archive or Official Android 存储库中为 SampleGattAttributes

找到了一个示例

完整示例如下：

/*
 * Copyright (C) 2013 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 com.example.android.bluetoothlegatt;

import java.util.HashMap;

/**
 * This class includes a small subset of standard GATT attributes for demonstration purposes.
 */
public class SampleGattAttributes {
    private static HashMap<String, String> attributes = new HashMap();
    public static String HEART_RATE_MEASUREMENT = "00002a37-0000-1000-8000-00805f9b34fb";
    public static String CLIENT_CHARACTERISTIC_CONFIG = "00002902-0000-1000-8000-00805f9b34fb";

    static {
        // Sample Services.
        attributes.put("0000180d-0000-1000-8000-00805f9b34fb", "Heart Rate Service");
        attributes.put("0000180a-0000-1000-8000-00805f9b34fb", "Device Information Service");
        // Sample Characteristics.
        attributes.put(HEART_RATE_MEASUREMENT, "Heart Rate Measurement");
        attributes.put("00002a29-0000-1000-8000-00805f9b34fb", "Manufacturer Name String");
    }

    public static String lookup(String uuid, String defaultName) {
        String name = attributes.get(uuid);
        return name == null ? defaultName : name;
    }
}

如何在以下代码中定义 SampleGattAttributes？

how to define SampleGattAttributes in the following code?

android

bluetooth-lowenergy

android-ble