Android项目实战（三十四）：蓝牙4.0 BLE 多设备连接

最近项目有个需求，手机设备连接多个蓝牙4.0 设备 并获取这些设备的数据。

查询了很多资料终于实现，现进行总结。

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从零开始实现一个连接多个蓝牙4.0 设备并获取数据的 Demo

注：如果不想看实现过程的，直接看最下面的demo源码即可，或每一步后相关操作步骤的完整代码。

一、Demo需求

1、搜索设备 ， 选择多个要连接的设备。

2、开始连接，显示数据。

二、项目知识储备

项目中需要用到的三方：

1、RecyclerView

列表，用于显示扫描得到的所有蓝牙设备

2、BaseRecyclerViewAdapterHelper

Recyclerview 帮助框架，快速实现列表操作

3、eventbus

用于消息传递，获取到蓝牙传送的数据之后，刷新界面显示数据时使用

4、bluetooth-manager

蓝牙4.0框架

5、permissionsdispatcher

权限管理，适配6.0+设备

添加依赖 gradle.bulld文件

compile 'com.android.support:appcompat-v7:25.3.1' compile 'com.blakequ.androidblemanager:bluetooth-manager-lib:2.1.5'compile 'com.github.hotchemi:permissionsdispatcher:2.1.3'compile 'de.greenrobot:eventbus:2.4.0'compile 'com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.18'compile 'com.android.support:design:25.3.1'

三、项目实现，布局文件

1、demo中一共用到两个activity 对应两个布局文件

先看扫描设备界面

包含：

1、一个列表，显示 所有扫描到的设备的MAC地址，点击状态在 ''已选择' or '‘未选择’ 之间改变，表明当前设备有没有加入到需要连接的设备集合中

2、扫描按钮

3、结束扫描按钮

4、完成选择按钮，将选择的设备MAC地址传回

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"xmlns:tools="/tools"android:id="@+id/activity_select_device"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context="com.maiji.magkareble40.SelectDeviceActivity"><android.support.v7.widget.RecyclerViewandroid:id="@+id/recyclerView"android:layout_width="match_parent"android:layout_height="0dp"android:layout_weight="1"></android.support.v7.widget.RecyclerView><Buttonandroid:id="@+id/btnScan"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="开始扫描"/><Buttonandroid:id="@+id/btnStopScan"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="停止扫描"/><Buttonandroid:id="@+id/btnOk"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="完成选择设备"/></LinearLayout>

连接界面。

包含：

1、选择需要连接的传感器设备 按钮

2、开始连接 按钮

3、数据展示

布局文件代码:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"xmlns:tools="/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context="com.maiji.magkareble40.XBleActivity"><Buttonandroid:id="@+id/btnSelectDevice"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="选择需要连接的传感器设备"/><Buttonandroid:id="@+id/btnStartConnect"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="开始连接"/><TextViewandroid:id="@+id/txtContentMac"android:layout_width="wrap_content"android:layout_height="wrap_content"android:padding="10dp"android:text=""/></LinearLayout>

四、Activity实现

1、扫描 设备 选择设备Activity

（1）、变量声明

private Button btnScan; //开始扫描按钮private Button btnStopScan; //停止扫描按钮private Button btnOk; //选择好了需要连接的mac设备BluetoothScanManager scanManager ; // 设备扫描管理器/* 列表相关 */private RecyclerView recyclerView ; //列表private ScanDeviceAdapter adapter; //设备扫描适配器private ArrayList<String> deviceMacs ; // 数据源 ： 所有扫描到的设备mac地址private ArrayList<String> selectDeviceMacs; // 选择的需要连接的设备的mac集合

关键代码：

（1）、蓝牙扫描的初始化设置

/*** 初始化蓝牙相关配置*/private void initBle() {scanManager = BleManager.getScanManager(this);scanManager.setScanOverListener(new ScanOverListener() {@Overridepublic void onScanOver() {}});scanManager.setScanCallbackCompat(new ScanCallbackCompat() {@Overridepublic void onBatchScanResults(List<ScanResultCompat> results) {super.onBatchScanResults(results);}@Overridepublic void onScanFailed(final int errorCode) {super.onScanFailed(errorCode);}@Overridepublic void onScanResult(int callbackType, ScanResultCompat result) {super.onScanResult(callbackType, result);//scan result// 只有当前列表中没有该mac地址的时候 添加if (!deviceMacs.contains(result.getDevice().getAddress())) {deviceMacs.add(result.getDevice().getAddress());adapter.notifyDataSetChanged();}}});}

蓝牙扫描设置初始化

（2）、开始扫描按钮 操作

//scanManager.startCycleScan(); //不会立即开始，可能会延时scanManager.startScanNow(); //立即开始扫描

（3）、停止扫描按钮 操作

// 如果正在扫描中 停止扫描if (scanManager.isScanning()) {scanManager.stopCycleScan();}

（4）、RecyclerView初始化 ，点击事件操作

recyclerView = (RecyclerView) findViewById(R.id.recyclerView);// 列表相关初始化recyclerView.setLayoutManager(new LinearLayoutManager(this));adapter = new ScanDeviceAdapter(deviceMacs);adapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {@Overridepublic void onItemClick(BaseQuickAdapter adapter, View view, int position) {if (!selectDeviceMacs.contains(deviceMacs.get(position))){//如果改item的mac不在已选中的mac集合中 说明没有选中，添加进已选中mac集合中，状态改为"已选择"selectDeviceMacs.add(deviceMacs.get(position));((TextView)view.findViewById(R.id.txtState)).setText("已选择");}else {selectDeviceMacs.remove(deviceMacs.get(position));((TextView)view.findViewById(R.id.txtState)).setText("未选择");}}});recyclerView.setAdapter(adapter);

activity全部代码：

package com.maiji.magkareble40;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.TextView;import com.blakequ.bluetooth_manager_lib.BleManager;import com.blakequ.bluetooth_manager_lib.BleParamsOptions;import com.blakequ.bluetooth_manager_lib.connect.ConnectConfig;import com.blakequ.bluetooth_manager_lib.scan.BluetoothScanManager;import com.blakequ.bluetooth_manager_lib.scan.ScanOverListener;import com.blakequ.bluetooth_manager_lib.scan.bluetoothcompat.ScanCallbackCompat;import com.blakequ.bluetooth_manager_lib.scan.bluetoothcompat.ScanFilterCompat;import com.blakequ.bluetooth_manager_lib.scan.bluetoothcompat.ScanResultCompat;import com.chad.library.adapter.base.BaseQuickAdapter;import java.util.ArrayList;import java.util.List;/*** @author xqx* @email djlxqx@* blog:/xqxacm/* createAt /9/6* description: 扫描蓝牙设备 选择需要连接的传感器*/public class SelectDeviceActivity extends Activity implements View.OnClickListener {private Button btnScan; //开始扫描按钮private Button btnStopScan; //停止扫描按钮private Button btnOk; //选择好了需要连接的mac设备BluetoothScanManager scanManager ;/* 列表相关 */private RecyclerView recyclerView ; //列表private ScanDeviceAdapter adapter;private ArrayList<String> deviceMacs ; // 数据源 ： 所有扫描到的设备mac地址private ArrayList<String> selectDeviceMacs; // 选择的需要连接的设备的mac集合@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_select_device);deviceMacs = new ArrayList<>();selectDeviceMacs = new ArrayList<>();initView();initEvent();initBle();}/*** 初始化蓝牙相关配置*/private void initBle() {scanManager = BleManager.getScanManager(this);scanManager.setScanOverListener(new ScanOverListener() {@Overridepublic void onScanOver() {}});scanManager.setScanCallbackCompat(new ScanCallbackCompat() {@Overridepublic void onBatchScanResults(List<ScanResultCompat> results) {super.onBatchScanResults(results);}@Overridepublic void onScanFailed(final int errorCode) {super.onScanFailed(errorCode);}@Overridepublic void onScanResult(int callbackType, ScanResultCompat result) {super.onScanResult(callbackType, result);//scan result// 只有当前列表中没有该mac地址的时候 添加if (!deviceMacs.contains(result.getDevice().getAddress())) {deviceMacs.add(result.getDevice().getAddress());adapter.notifyDataSetChanged();}}});}private void initEvent() {btnScan.setOnClickListener(this);btnStopScan.setOnClickListener(this);btnOk.setOnClickListener(this);}private void initView() {btnScan = (Button) findViewById(R.id.btnScan);btnStopScan = (Button) findViewById(R.id.btnStopScan);btnOk = (Button) findViewById(R.id.btnOk);recyclerView = (RecyclerView) findViewById(R.id.recyclerView);// 列表相关初始化recyclerView.setLayoutManager(new LinearLayoutManager(this));adapter = new ScanDeviceAdapter(deviceMacs);adapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {@Overridepublic void onItemClick(BaseQuickAdapter adapter, View view, int position) {if (!selectDeviceMacs.contains(deviceMacs.get(position))){//如果改item的mac不在已选中的mac集合中 说明没有选中，添加进已选中mac集合中，状态改为"已选择"selectDeviceMacs.add(deviceMacs.get(position));((TextView)view.findViewById(R.id.txtState)).setText("已选择");}else {selectDeviceMacs.remove(deviceMacs.get(position));((TextView)view.findViewById(R.id.txtState)).setText("未选择");}}});recyclerView.setAdapter(adapter);}@Overridepublic void onClick(View v) {switch (v.getId()){case R.id.btnScan://开始 扫描//scanManager.startCycleScan(); //不会立即开始，可能会延时scanManager.startScanNow(); //立即开始扫描break;case R.id.btnStopScan:// 如果正在扫描中 停止扫描if (scanManager.isScanning()) {scanManager.stopCycleScan();}break;case R.id.btnOk:Intent intent = new Intent();intent.putExtra("data",selectDeviceMacs);// 设置结果，并进行传送this.setResult(1, intent);this.finish();break;}}@Overrideprotected void onDestroy() {super.onDestroy();// 如果正在扫描中 停止扫描if (scanManager.isScanning()) {scanManager.stopCycleScan();}}}

SelectDeviceActivity.class

适配器相关代码：

package com.maiji.magkareble40;import android.widget.ImageView;import com.chad.library.adapter.base.BaseQuickAdapter;import com.chad.library.adapter.base.BaseViewHolder;import java.util.ArrayList;/*** @author xqx* @email djlxqx@* blog:/xqxacm/* createAt /9/6* description: 扫描得到的蓝牙设备列表适配器*/public class ScanDeviceAdapter extends BaseQuickAdapter<String , BaseViewHolder> {public ScanDeviceAdapter(ArrayList<String> datas) {super(R.layout.item_device, datas);}@Overrideprotected void convert(BaseViewHolder helper, String item) {helper.setText(R.id.txtMac,item);}}

ScanDeviceAdapter.class

适配器布局代码：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:paddingLeft="16dp"android:paddingRight="16dp"android:layout_marginTop="16dp"android:layout_marginBottom="16dp"><TextViewandroid:id="@+id/txtMac"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text=""android:layout_centerVertical="true"/><TextViewandroid:id="@+id/txtState"android:text="未选择"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_centerVertical="true"/><Viewandroid:layout_width="match_parent"android:layout_height="1dp"android:background="#fff"android:layout_alignParentBottom="true"></View></RelativeLayout>

item_device.xml

2、连接多设备，获取数据并展示Activity

(1)、变量声明

private Button btnSelectDevice ; //选择需要绑定的设备private Button btnStartConnect ; //开始连接按钮private TextView txtContentMac ; //获取到的数据解析结果显示private final int REQUEST_CODE_PERMISSION = 1; // 权限请求码 用于回调MultiConnectManager multiConnectManager ; //多设备连接private BluetoothAdapter bluetoothAdapter; //蓝牙适配器private ArrayList<String> connectDeviceMacList ; //需要连接的mac设备集合ArrayList<BluetoothGatt> gattArrayList; //设备gatt集合

2、关键代码

1、权限适配

注意：不止蓝牙权限，位置权限也需要打开

/*** @author xqx* @email djlxqx@* blog:/xqxacm/* createAt /8/30* description: 权限申请相关，适配6.0+机型 ，蓝牙，文件，位置 权限*/private String[] allPermissionList = {Manifest.permission.BLUETOOTH, Manifest.permission.BLUETOOTH_ADMIN,Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};/*** 遍历出需要获取的权限*/private void requestWritePermission() {ArrayList<String> permissionList = new ArrayList<>();// 将需要获取的权限加入到集合中 ，根据集合数量判断 需不需要添加for (int i = 0; i < allPermissionList.length; i++) {if (PackageManager.PERMISSION_DENIED == ContextCompat.checkSelfPermission(this, allPermissionList[i])){permissionList.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);}}String permissionArray[] = new String[permissionList.size()];for (int i = 0; i < permissionList.size(); i++) {permissionArray[i] = permissionList.get(i);}if (permissionList.size() > 0)ActivityCompat.requestPermissions(this, permissionArray, REQUEST_CODE_PERMISSION);}/*** 权限申请的回调* @param requestCode* @param permissions* @param grantResults*/@Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {if (requestCode == REQUEST_CODE_PERMISSION){if (permissions[0].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)&&grantResults[0] == PackageManager.PERMISSION_GRANTED){//用户同意使用write}else{//用户不同意，自行处理即可Toast.makeText(XBleActivity.this,"您取消了权限申请,可能会影响软件的使用,如有问题请退出重试",Toast.LENGTH_SHORT).show();}}}

权限适配

2、蓝牙开启、连接等 初始化设置

/*** 对蓝牙的初始化操作*/private void initConfig() {multiConnectManager = BleManager.getMultiConnectManager(this);// 获取蓝牙适配器try {// 获取蓝牙适配器bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();// if (bluetoothAdapter == null) {Toast.makeText(this, "蓝牙不可用", Toast.LENGTH_LONG).show();return;}// 蓝牙没打开的时候打开蓝牙if (!bluetoothAdapter.isEnabled())bluetoothAdapter.enable();}catch (Exception err){};BleManager.setBleParamsOptions(new BleParamsOptions.Builder().setBackgroundBetweenScanPeriod(5 * 60 * 1000).setBackgroundScanPeriod(10000).setForegroundBetweenScanPeriod(2000).setForegroundScanPeriod(10000).setDebugMode(BuildConfig.DEBUG).setMaxConnectDeviceNum(7) //最大可以连接的蓝牙设备个数.setReconnectBaseSpaceTime(1000).setReconnectMaxTimes(Integer.MAX_VALUE).setReconnectStrategy(ConnectConfig.RECONNECT_LINE_EXPONENT).setReconnectedLineToExponentTimes(5).setConnectTimeOutTimes(20000).build());}

initBle

3、开始连接操作

/*** 连接需要连接的传感器* @param*/private void connentBluetooth(){String[] objects = connectDeviceMacList.toArray(new String[connectDeviceMacList.size()]);multiConnectManager.addDeviceToQueue(objects);multiConnectManager.addConnectStateListener(new ConnectStateListener() {@Overridepublic void onConnectStateChanged(String address, ConnectState state) {switch (state){case CONNECTING:Log.i("connectStateX","设备:"+address+"连接状态:"+"正在连接");break;case CONNECTED:Log.i("connectStateX","设备:"+address+"连接状态:"+"成功");break;case NORMAL:Log.i("connectStateX","设备:"+address+"连接状态:"+"失败");break;}}});/*** 数据回调*/multiConnectManager.setBluetoothGattCallback(new BluetoothGattCallback() {@Overridepublic void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {super.onCharacteristicChanged(gatt, characteristic);dealCallDatas(gatt , characteristic);}});multiConnectManager.setServiceUUID("0000ffe5-0000-1000-8000-00805f9a34fb");multiConnectManager.addBluetoothSubscribeData(new BluetoothSubScribeData.Builder().setCharacteristicNotify(UUID.fromString("0000ffe4-0000-1000-8000-00805f9a34fb")).build());//还有读写descriptor//start descriptor(注意，在使用时当回调onServicesDiscovered成功时会自动调用该方法，所以只需要在连接之前完成1,3步即可)for (int i = 0; i < gattArrayList.size(); i++) {multiConnectManager.startSubscribe(gattArrayList.get(i));}multiConnectManager.startConnect();}/*** 处理回调的数据* @param gatt* @param characteristic*/float[][] floats = new float[7][30];private void dealCallDatas(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {int position = connectDeviceMacList.indexOf(gatt.getDevice().getAddress());//第一个传感器数据byte[] value = characteristic.getValue();if (value[0] != 0x55) {//开头不是0x55的数据删除return;}switch (value[1]) {case 0x61://加速度数据floats[position][3] = ((((short) value[3]) << 8) | ((short) value[2] & 0xff)) / 32768.0f * 16; //x轴floats[position][4] = ((((short) value[5]) << 8) | ((short) value[4] & 0xff)) / 32768.0f * 16; //y轴floats[position][5] = ((((short) value[7]) << 8) | ((short) value[6] & 0xff)) / 32768.0f * 16; //z轴//角速度数据floats[position][6] = ((((short) value[9]) << 8) | ((short) value[8] & 0xff)) / 32768.0f * 2000; //x轴floats[position][7] = ((((short) value[11]) << 8) | ((short) value[10] & 0xff)) / 32768.0f * 2000; //x轴floats[position][8] = ((((short) value[13]) << 8) | ((short) value[12] & 0xff)) / 32768.0f * 2000; //x轴break;case 0x62://四元素floats[position][13] = ((((short) value[3]) << 8) | ((short) value[2] & 0xff)) / 32768.0f; // q1floats[position][14] = ((((short) value[5]) << 8) | ((short) value[4] & 0xff)) / 32768.0f; // q2floats[position][15] = ((((short) value[7]) << 8) | ((short) value[6] & 0xff)) / 32768.0f; // q3floats[position][16] = ((((short) value[9]) << 8) | ((short) value[8] & 0xff)) / 32768.0f; // q4//电池电压floats[position][21] = (float) 1.2 * 4 * (((value[11] << 8) | value[10]) + 1) / 1024;//充电状态floats[position][22] = value[12];//低电压报警floats[position][23] = value[14];break;}EventBus.getDefault().post(new RefreshDatas()); // 发送消息，更新UI 显示数据}

connectBle

activity全部代码：

package com.maiji.magkareble40;import android.Manifest;import android.app.Activity;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothGatt;import android.bluetooth.BluetoothGattCallback;import android.bluetooth.BluetoothGattCharacteristic;import android.content.Intent;import android.content.pm.PackageManager;import android.support.v4.app.ActivityCompat;import android.support.v4.content.ContextCompat;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;import com.blakequ.bluetooth_manager_lib.BleManager;import com.blakequ.bluetooth_manager_lib.BleParamsOptions;import com.blakequ.bluetooth_manager_lib.connect.BluetoothSubScribeData;import com.blakequ.bluetooth_manager_lib.connect.ConnectConfig;import com.blakequ.bluetooth_manager_lib.connect.ConnectState;import com.blakequ.bluetooth_manager_lib.connect.ConnectStateListener;import com.blakequ.bluetooth_manager_lib.connect.multiple.MultiConnectManager;import java.util.ArrayList;import java.util.UUID;import de.greenrobot.event.EventBus;/*** @author xqx* @email djlxqx@* blog:/xqxacm/* createAt /9/6* description: ble 4.0 多设备连接*/public class XBleActivity extends Activity implements View.OnClickListener {private Button btnSelectDevice ; //选择需要绑定的设备private Button btnStartConnect ; //开始连接按钮private TextView txtContentMac ; //获取到的数据解析结果显示private final int REQUEST_CODE_PERMISSION = 1; // 权限请求码 用于回调MultiConnectManager multiConnectManager ; //多设备连接private BluetoothAdapter bluetoothAdapter; //蓝牙适配器private ArrayList<String> connectDeviceMacList ; //需要连接的mac设备集合ArrayList<BluetoothGatt> gattArrayList; //设备gatt集合@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_xble);initVariables();initView();initEvent();requestWritePermission();initConfig(); // 蓝牙初始设置EventBus.getDefault().register(this);}private void initVariables() {connectDeviceMacList = new ArrayList<>();gattArrayList = new ArrayList<>();}private void initEvent() {btnSelectDevice.setOnClickListener(this);btnStartConnect.setOnClickListener(this);}private void initView() {btnSelectDevice = (Button) findViewById(R.id.btnSelectDevice);btnStartConnect = (Button) findViewById(R.id.btnStartConnect);txtContentMac = (TextView) findViewById(R.id.txtContentMac);}@Overridepublic void onClick(View v) {switch (v.getId()){case R.id.btnSelectDevice:// 扫描并选择需要连接的设备Intent intent = new Intent();intent.setClass(this,SelectDeviceActivity.class);startActivityForResult(intent,1);break;case R.id.btnStartConnect:connentBluetooth();break;}}/*** 连接需要连接的传感器* @param*/private void connentBluetooth(){String[] objects = connectDeviceMacList.toArray(new String[connectDeviceMacList.size()]);multiConnectManager.addDeviceToQueue(objects);multiConnectManager.addConnectStateListener(new ConnectStateListener() {@Overridepublic void onConnectStateChanged(String address, ConnectState state) {switch (state){case CONNECTING:Log.i("connectStateX","设备:"+address+"连接状态:"+"正在连接");break;case CONNECTED:Log.i("connectStateX","设备:"+address+"连接状态:"+"成功");break;case NORMAL:Log.i("connectStateX","设备:"+address+"连接状态:"+"失败");break;}}});/*** 数据回调*/multiConnectManager.setBluetoothGattCallback(new BluetoothGattCallback() {@Overridepublic void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {super.onCharacteristicChanged(gatt, characteristic);dealCallDatas(gatt , characteristic);}});multiConnectManager.setServiceUUID("0000ffe5-0000-1000-8000-00805f9a34fb");multiConnectManager.addBluetoothSubscribeData(new BluetoothSubScribeData.Builder().setCharacteristicNotify(UUID.fromString("0000ffe4-0000-1000-8000-00805f9a34fb")).build());//还有读写descriptor//start descriptor(注意，在使用时当回调onServicesDiscovered成功时会自动调用该方法，所以只需要在连接之前完成1,3步即可)for (int i = 0; i < gattArrayList.size(); i++) {multiConnectManager.startSubscribe(gattArrayList.get(i));}multiConnectManager.startConnect();}/*** 处理回调的数据* @param gatt* @param characteristic*/float[][] floats = new float[7][30];private void dealCallDatas(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {int position = connectDeviceMacList.indexOf(gatt.getDevice().getAddress());//第一个传感器数据byte[] value = characteristic.getValue();if (value[0] != 0x55) {//开头不是0x55的数据删除return;}switch (value[1]) {case 0x61://加速度数据floats[position][3] = ((((short) value[3]) << 8) | ((short) value[2] & 0xff)) / 32768.0f * 16; //x轴floats[position][4] = ((((short) value[5]) << 8) | ((short) value[4] & 0xff)) / 32768.0f * 16; //y轴floats[position][5] = ((((short) value[7]) << 8) | ((short) value[6] & 0xff)) / 32768.0f * 16; //z轴//角速度数据floats[position][6] = ((((short) value[9]) << 8) | ((short) value[8] & 0xff)) / 32768.0f * 2000; //x轴floats[position][7] = ((((short) value[11]) << 8) | ((short) value[10] & 0xff)) / 32768.0f * 2000; //x轴floats[position][8] = ((((short) value[13]) << 8) | ((short) value[12] & 0xff)) / 32768.0f * 2000; //x轴break;case 0x62://四元素floats[position][13] = ((((short) value[3]) << 8) | ((short) value[2] & 0xff)) / 32768.0f; // q1floats[position][14] = ((((short) value[5]) << 8) | ((short) value[4] & 0xff)) / 32768.0f; // q2floats[position][15] = ((((short) value[7]) << 8) | ((short) value[6] & 0xff)) / 32768.0f; // q3floats[position][16] = ((((short) value[9]) << 8) | ((short) value[8] & 0xff)) / 32768.0f; // q4//电池电压floats[position][21] = (float) 1.2 * 4 * (((value[11] << 8) | value[10]) + 1) / 1024;//充电状态floats[position][22] = value[12];//低电压报警floats[position][23] = value[14];break;}EventBus.getDefault().post(new RefreshDatas()); // 发送消息，更新UI 显示数据 }/*** 对蓝牙的初始化操作*/private void initConfig() {multiConnectManager = BleManager.getMultiConnectManager(this);// 获取蓝牙适配器try {// 获取蓝牙适配器bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();// if (bluetoothAdapter == null) {Toast.makeText(this, "蓝牙不可用", Toast.LENGTH_LONG).show();return;}// 蓝牙没打开的时候打开蓝牙if (!bluetoothAdapter.isEnabled())bluetoothAdapter.enable();}catch (Exception err){};BleManager.setBleParamsOptions(new BleParamsOptions.Builder().setBackgroundBetweenScanPeriod(5 * 60 * 1000).setBackgroundScanPeriod(10000).setForegroundBetweenScanPeriod(2000).setForegroundScanPeriod(10000).setDebugMode(BuildConfig.DEBUG).setMaxConnectDeviceNum(7) //最大可以连接的蓝牙设备个数.setReconnectBaseSpaceTime(1000).setReconnectMaxTimes(Integer.MAX_VALUE).setReconnectStrategy(ConnectConfig.RECONNECT_LINE_EXPONENT).setReconnectedLineToExponentTimes(5).setConnectTimeOutTimes(20000).build());}/*** @author xqx* @email djlxqx@* blog:/xqxacm/* createAt /8/30* description: 权限申请相关，适配6.0+机型 ，蓝牙，文件，位置 权限*/private String[] allPermissionList = {Manifest.permission.BLUETOOTH, Manifest.permission.BLUETOOTH_ADMIN,Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};/*** 遍历出需要获取的权限*/private void requestWritePermission() {ArrayList<String> permissionList = new ArrayList<>();// 将需要获取的权限加入到集合中 ，根据集合数量判断 需不需要添加for (int i = 0; i < allPermissionList.length; i++) {if (PackageManager.PERMISSION_DENIED == ContextCompat.checkSelfPermission(this, allPermissionList[i])){permissionList.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);}}String permissionArray[] = new String[permissionList.size()];for (int i = 0; i < permissionList.size(); i++) {permissionArray[i] = permissionList.get(i);}if (permissionList.size() > 0)ActivityCompat.requestPermissions(this, permissionArray, REQUEST_CODE_PERMISSION);}/*** 权限申请的回调* @param requestCode* @param permissions* @param grantResults*/@Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {if (requestCode == REQUEST_CODE_PERMISSION){if (permissions[0].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)&&grantResults[0] == PackageManager.PERMISSION_GRANTED){//用户同意使用write}else{//用户不同意，自行处理即可Toast.makeText(XBleActivity.this,"您取消了权限申请,可能会影响软件的使用,如有问题请退出重试",Toast.LENGTH_SHORT).show();}}}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (data!=null){switch (requestCode){case 1:connectDeviceMacList = data.getStringArrayListExtra("data");Log.i("xqxinfo","需要连接的mac"+connectDeviceMacList.toString());//获取设备gatt对象for (int i = 0; i < connectDeviceMacList.size(); i++) {BluetoothGatt gatt = bluetoothAdapter.getRemoteDevice(connectDeviceMacList.get(i)).connectGatt(this, false, new BluetoothGattCallback() {});gattArrayList.add(gatt);Log.i("xqxinfo","添加了"+connectDeviceMacList.get(i));}break;}}}public void onEventMainThread(RefreshDatas event) {txtContentMac.setText("");for (int i = 0; i < connectDeviceMacList.size(); i++) {txtContentMac.append("Mac:"+connectDeviceMacList.get(i)+"\n");txtContentMac.append("加速度:"+floats[i][3]+"-"+floats[i][4]+"-"+floats[i][5]+"\n");txtContentMac.append("角速度:"+floats[i][6]+"-"+floats[i][7]+"-"+floats[i][8]+"\n");txtContentMac.append("四元素:"+floats[i][13]+"-"+floats[i][14]+"-"+floats[i][15]+"-"+floats[i][16]+"\n");txtContentMac.append("电池电压:"+floats[i][21]+"\n");txtContentMac.append("充电状态:"+floats[i][22]+"\n");txtContentMac.append("低电压报警:"+floats[i][23]+"\n\n");}}@Overrideprotected void onDestroy() {super.onDestroy();EventBus.getDefault().unregister(this);}}

XBleActivity.class

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项目地址：

/BestCoderXQX/MagkareBle4.0

项目使用说明：

1、点击按钮:'选择需要连接的传感器设备'、跳转新界面

2、点击'开始扫描'按钮，会出现很多设备的mac地址 ，以列表的新式展现

3、对列表item操作，更改状态'已选择'or'未选择'

4、点击按钮'完成选择设备'按钮，将列表中状态为'已选择'的mac集合传回上个界面

5、点击'开始连接'按钮。连接开始，显示连接设备的数据。（注意，这里是按我的传感器来的。实际需要换成你所用到的设备的 数据 转换公式！）

如有问题，欢迎右侧加群。