Android 关贸总协定问题
我对安卓系统和蓝牙是个新手。我试过谷歌提供的。我在Raspberry Pi 3上运行Bluetooth LE GATT服务器示例，在我的手机上运行。我在samplegattatAttributes.java和 BluetoothLeService.java SampleGattAttributes.javaAndroid 关贸总协定问题,android,bluetooth,android-things,Android,Bluetooth,Android Things,我对安卓系统和蓝牙是个新手。我试过谷歌提供的。我在Raspberry Pi 3上运行Bluetooth LE GATT服务器示例，在我的手机上运行。我在samplegattatAttributes.java和 BluetoothLeService.java SampleGattAttributes.java public class SampleGattAttributes { private static HashMap<String, String> attributes
public class SampleGattAttributes {
private static HashMap<String, String> attributes = new HashMap();
public static String CURRENT_TIME = "00002a2b-0000-1000-8000-00805f9b34fb";
public static String CLIENT_CONFIG = "00002902-0000-1000-8000-00805f9b34fb";
static {
// Sample Services.
attributes.put("00001805-0000-1000-8000-00805f9b34fb", "TIME SERVICE");
// Sample Characteristics.
attributes.put(CURRENT_TIME, "CURRENT TIME");}
公共类示例属性{
私有静态HashMap attributes=newhashmap（）；
公共静态串电流_TIME=“00002a2b-0000-1000-8000-00805f9b34fb”；
公共静态字符串客户端_CONFIG=“00002902-0000-1000-8000-00805f9b34fb”；
静止的{
//示例服务。
属性.put（“00001805-0000-1000-8000-00805f9b34fb”，“时间服务”）；
//样本特征。
attributes.put（当前时间，“当前时间”）；}
/*
* 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 android.app.Service;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCallback;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothGattDescriptor;
import android.bluetooth.BluetoothGattService;
import android.bluetooth.BluetoothManager;
import android.bluetooth.BluetoothProfile;
import android.content.Context;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import java.util.List;
import java.util.UUID;
/**
* Service for managing connection and data communication with a GATT server hosted on a
* given Bluetooth LE device.
*/
public class BluetoothLeService extends Service {
private final static String TAG = BluetoothLeService.class.getSimpleName();
private BluetoothManager mBluetoothManager;
private BluetoothAdapter mBluetoothAdapter;
private String mBluetoothDeviceAddress;
private BluetoothGatt mBluetoothGatt;
private int mConnectionState = STATE_DISCONNECTED;
private static final int STATE_DISCONNECTED = 0;
private static final int STATE_CONNECTING = 1;
private static final int STATE_CONNECTED = 2;
public final static String ACTION_GATT_CONNECTED = "com.example.bluetooth.le.ACTION_GATT_CONNECTED";
public final static String ACTION_GATT_DISCONNECTED = "com.example.bluetooth.le.ACTION_GATT_DISCONNECTED";
public final static String ACTION_GATT_SERVICES_DISCOVERED = "com.example.bluetooth.le.ACTION_GATT_SERVICES_DISCOVERED";
public final static String ACTION_DATA_AVAILABLE = "com.example.bluetooth.le.ACTION_DATA_AVAILABLE";
public final static String EXTRA_DATA = "com.example.bluetooth.le.EXTRA_DATA";
public final static UUID UUID_CURRENT_TIME = UUID.fromString(SampleGattAttributes.CURRENT_TIME);
// Implements callback methods for GATT events that the app cares about. For example,
// connection change and services discovered.
private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() {
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
String intentAction;
if (newState == BluetoothProfile.STATE_CONNECTED) {
intentAction = ACTION_GATT_CONNECTED;
mConnectionState = STATE_CONNECTED;
broadcastUpdate(intentAction);
Log.i(TAG, "Connected to GATT server.");
// Attempts to discover services after successful connection.
Log.i(TAG, "Attempting to start service discovery:" +
mBluetoothGatt.discoverServices());
} else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
intentAction = ACTION_GATT_DISCONNECTED;
mConnectionState = STATE_DISCONNECTED;
Log.i(TAG, "Disconnected from GATT server.");
broadcastUpdate(intentAction);
}
}
@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
if (status == BluetoothGatt.GATT_SUCCESS) {
broadcastUpdate(ACTION_GATT_SERVICES_DISCOVERED);
} else {
Log.w(TAG, "onServicesDiscovered received: " + status);
}
}
@Override
public void onCharacteristicRead(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {
if (status == BluetoothGatt.GATT_SUCCESS) {
broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
}
}
@Override
public void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
}
};
private void broadcastUpdate(final String action) {
final Intent intent = new Intent(action);
sendBroadcast(intent);
}
private void broadcastUpdate(final String action, final BluetoothGattCharacteristic characteristic) {
final Intent intent = new Intent(action);
// This is special handling for the Heart Rate Measurement profile. Data parsing is
// carried out as per profile specifications:
// http://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml
if (UUID_CURRENT_TIME.equals(characteristic.getUuid())) {
int flag = characteristic.getProperties();
int format = -1;
if ((flag & 0x01) != 0) {
format = BluetoothGattCharacteristic.FORMAT_UINT16;
Log.d(TAG, "Heart rate format UINT16.");
} else {
format = BluetoothGattCharacteristic.FORMAT_UINT8;
Log.d(TAG, "Heart rate format UINT8.");
}
final int heartRate = characteristic.getIntValue(format, 1);
Log.d(TAG, String.format("Received heart rate: %d", heartRate));
intent.putExtra(EXTRA_DATA, String.valueOf(heartRate));
} else {
// For all other profiles, writes the data formatted in HEX.
final byte[] data = characteristic.getValue();
if (data != null && data.length > 0) {
final StringBuilder stringBuilder = new StringBuilder(data.length);
for(byte byteChar : data)
stringBuilder.append(String.format("%02X ", byteChar));
intent.putExtra(EXTRA_DATA, new String(data) + "\n" + stringBuilder.toString());
}
}
sendBroadcast(intent);
}
public class LocalBinder extends Binder {
BluetoothLeService getService() {
return BluetoothLeService.this;
}
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
@Override
public boolean onUnbind(Intent intent) {
// After using a given device, you should make sure that BluetoothGatt.close() is called
// such that resources are cleaned up properly. In this particular example, close() is
// invoked when the UI is disconnected from the Service.
close();
return super.onUnbind(intent);
}
private final IBinder mBinder = new LocalBinder();
/**
* Initializes a reference to the local Bluetooth adapter.
*
* @return Return true if the initialization is successful.
*/
public boolean initialize() {
// For API level 18 and above, get a reference to BluetoothAdapter through
// BluetoothManager.
if (mBluetoothManager == null) {
mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
if (mBluetoothManager == null) {
Log.e(TAG, "Unable to initialize BluetoothManager.");
return false;
}
}
mBluetoothAdapter = mBluetoothManager.getAdapter();
if (mBluetoothAdapter == null) {
Log.e(TAG, "Unable to obtain a BluetoothAdapter.");
return false;
}
return true;
}
/**
* Connects to the GATT server hosted on the Bluetooth LE device.
*
* @param address The device address of the destination device.
*
* @return Return true if the connection is initiated successfully. The connection result
* is reported asynchronously through the
* {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)}
* callback.
*/
public boolean connect(final String address) {
if (mBluetoothAdapter == null || address == null) {
Log.w(TAG, "BluetoothAdapter not initialized or unspecified address.");
return false;
}
// Previously connected device. Try to reconnect.
if (mBluetoothDeviceAddress != null && address.equals(mBluetoothDeviceAddress) && mBluetoothGatt != null) {
Log.d(TAG, "Trying to use an existing mBluetoothGatt for connection.");
if (mBluetoothGatt.connect()) {
mConnectionState = STATE_CONNECTING;
return true;
} else {
return false;
}
}
final BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
if (device == null) {
Log.w(TAG, "Device not found. Unable to connect.");
return false;
}
// We want to directly connect to the device, so we are setting the autoConnect parameter to false.
mBluetoothGatt = device.connectGatt(this, false, mGattCallback);
Log.d(TAG, "Trying to create a new connection.");
mBluetoothDeviceAddress = address;
mConnectionState = STATE_CONNECTING;
return true;
}
/**
* 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() {
if (mBluetoothAdapter == null || mBluetoothGatt == null) {
Log.w(TAG, "BluetoothAdapter not initialized");
return;
}
mBluetoothGatt.disconnect();
}
/**
* After using a given BLE device, the app must call this method to ensure resources are
* released properly.
*/
public void close() {
if (mBluetoothGatt == null) {
return;
}
mBluetoothGatt.close();
mBluetoothGatt = null;
}
/**
* 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(BluetoothGattCharacteristic characteristic) {
if (mBluetoothAdapter == null || mBluetoothGatt == null) {
Log.w(TAG, "BluetoothAdapter not initialized");
return;
}
mBluetoothGatt.readCharacteristic(characteristic);
}
/**
* Enables or disables notification on a give characteristic.
*
* @param characteristic Characteristic to act on.
* @param enabled If true, enable notification. False otherwise.
*/
public void setCharacteristicNotification(BluetoothGattCharacteristic characteristic,
boolean enabled) {
if (mBluetoothAdapter == null || mBluetoothGatt == null) {
Log.w(TAG, "BluetoothAdapter not initialized");
return;
}
mBluetoothGatt.setCharacteristicNotification(characteristic, enabled);
// This is specific to Heart Rate Measurement.
if (UUID_CURRENT_TIME.equals(characteristic.getUuid())) {
BluetoothGattDescriptor descriptor = characteristic.getDescriptor(UUID.fromString(SampleGattAttributes.CLIENT_CONFIG));
descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
mBluetoothGatt.writeDescriptor(descriptor);
}
}
/**
* Retrieves a list of supported GATT services on the connected device. This should be
* invoked only after {@code BluetoothGatt#discoverServices()} completes successfully.
*
* @return A {@code List} of supported services.
*/
public List<BluetoothGattService> getSupportedGattServices() {
if (mBluetoothGatt == null) return null;
return mBluetoothGatt.getServices();
}
}
/*
*版权所有（C）2013安卓开源项目
*
*根据Apache许可证2.0版（以下简称“许可证”）获得许可；
*除非遵守许可证，否则不得使用此文件。
*您可以通过以下方式获得许可证副本：
*
* http://www.apache.org/licenses/LICENSE-2.0
*
*除非适用法律要求或书面同意，软件
*根据许可证进行的分发是按“原样”进行分发的，
*无任何明示或暗示的保证或条件。
*请参阅许可证以了解管理权限和权限的特定语言
*许可证下的限制。
*/
包com.example.android.bluetoothlegatt；
导入android.app.Service；
导入android.bluetooth.BluetoothAdapter；
导入android.bluetooth.bluetooth设备；
导入android.bluetooth.BluetoothGatt；
导入android.bluetooth.BluetoothGattCallback；
导入android.bluetooth.BluetoothGattCharacteristic；
导入android.bluetooth.BluetoothGattDescriptor；
导入android.bluetooth.BluetoothGattService；
导入android.bluetooth.BluetoothManager；
导入android.bluetooth.BluetoothProfile；
导入android.content.Context；
导入android.content.Intent；
导入android.os.Binder；
导入android.os.IBinder；
导入android.util.Log；
导入java.util.List；
导入java.util.UUID；
/**
*用于管理与托管在服务器上的GATT服务器的连接和数据通信的服务
*给定蓝牙设备。
*/
公共类BluetoothLeService扩展服务{
private final static String TAG=BluetoothLeService.class.getSimpleName（）；
私人蓝牙经理MBluetothorser；
私人蓝牙适配器mBluetoothAdapter；
私有字符串mBluetoothDeviceAddress；
私人蓝牙总协定；
private int mConnectionState=状态_已断开连接；
私有静态最终int状态_DISCONNECTED=0；
私有静态最终int状态_CONNECTING=1；
专用静态最终int状态_CONNECTED=2；
公共最终静态字符串ACTION\u GATT\u CONNECTED=“com.example.bluetooth.le.ACTION\u GATT\u CONNECTED”；
公共最终静态字符串ACTION\u GATT\u DISCONNECTED=“com.example.bluetooth.le.ACTION\u GATT\u DISCONNECTED”；
公共最终静态字符串ACTION\u GATT\u SERVICES\u DISCOVERED=“com.example.bluetooth.le.ACTION\u GATT\u SERVICES\u DISCOVERED”；
公共最终静态字符串ACTION\u DATA\u AVAILABLE=“com.example.bluetooth.le.ACTION\u DATA\u AVAILABLE”；
公共最终静态字符串EXTRA_DATA=“com.example.bluetooth.le.EXTRA_DATA”；
公共最终静态UUID UUID\u CURRENT\u TIME=UUID.fromString（samplegattatattributes.CURRENT\u TIME）；
//为应用程序关心的GATT事件实现回调方法。例如，
//发现连接更改和服务。
私有最终BluetoothGattCallback mGattCallback=新BluetoothGattCallback（）{
@凌驾
连接状态更改的公共无效（蓝牙gatt gatt、int状态、int新闻状态）{
串接；
if（newState==BluetoothProfile.STATE\u CONNECTED）{
意向=行动与关贸总协定连接；
mConnectionState=连接状态；
广播更新（意向）；
Log.i（标记“连接到GATT服务器”）；
//尝试在成功连接后发现服务。
Log.i（标记“正在尝试启动服务发现：”+
mBluetoothGatt.discoverServices（））；
}else if（newState==BluetoothProfile.STATE\u已断开连接）{
intentAction=动作与关贸总协定断开；
mConnectionState=状态\断开连接；
Log.i（标签，“与GATT服务器断开连接”）；
广播更新（意向）；
}
}
@凌驾
发现服务上的公共无效（Bluetooth gatt，int状态）{
如果（状态==蓝牙GATT.GATT\U成功）{
广播更新（发现行动、关税及贸易总协定服务）；
}否则{
Log.w（标记“OnServicesDiscovery已接收：+状态）；
}
}
@凌驾
特征读取的公共无效（蓝牙gatt、蓝牙gatt特征特征、国际状态）{
如果（状态==蓝牙GATT.GATT\U成功）{
广播更新（动作数据可用，特征）；
}
}
@凌驾
特征变更后的公共无效（蓝牙gatt、蓝牙gatt特征特征）{
广播更新（动作数据可用，特征）；
}
};
私有无效广播更新（最终字符串操作）{
最终意图=新意图（行动）；
发送广播（意图）；
}
私有无效广播更新（最终字符串操作、最终BluetoothGattCharacteristic特征）{
最终意图=新意图（行动）；
//这是对心率测量配置文件的特殊处理
//根据剖面规范进行：
// http://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurem