四、BluetoothGattCallback回调函数（安卓蓝牙ble教程）

男娘i 2022-02-15 14:29 1970阅读 0赞

# 1、MainActivity.java #

注：如果复制代码进项目时显示红色，请按ALT+ENTER键导包（import class）

package club.stm32;
    
    import android.Manifest;
    import android.bluetooth.BluetoothAdapter;
    import android.bluetooth.BluetoothDevice;
    import android.bluetooth.BluetoothGatt;
    import android.bluetooth.BluetoothGattCallback;
    import android.bluetooth.BluetoothGattCharacteristic;
    import android.bluetooth.BluetoothGattService;
    import android.bluetooth.BluetoothProfile;
    import android.content.pm.PackageManager;
    import android.os.Build;
    import android.os.Bundle;
    import android.support.v4.app.ActivityCompat;
    import android.support.v4.content.ContextCompat;
    import android.support.v7.app.AppCompatActivity;
    import android.util.Log;
    import android.view.View;
    import android.widget.Button;
    import android.widget.TextView;
    import android.widget.Toast;
    
    import java.util.List;
    import java.util.UUID;
    
    
    public class MainActivity extends AppCompatActivity {
    
        /**
         * 需要根据条件修改的参数
         */
        private String MacHeader = "A5:B3:C2";  //蓝牙的Mac地址前六位，需要根据自己的蓝牙进行修改
        private String SERVICESUUID = "0000ff00-0000-1000-8000-00805f9b34fb";   //服务的UUID
        private String WRITEUUID = "0000ff02-0000-1000-8000-00805f9b34fb";      //写入特征的UUID
        private String NOTIFYUUID = "0000ff01-0000-1000-8000-00805f9b34fb";     //监听特征的UUID
    
    
        private BytesHexStrTranslate bytesHexStrTranslate;
        private BluetoothAdapter bluetoothAdapter;
        private Button btnCheckPermission;
        private TextView tvmsg;
        private Button btnSearchBLE;
        private BluetoothDevice mdevice;
        private BluetoothGatt bluetoothGatt;
        private TextView getSendText;
        private Button btnSend;
        private BluetoothGattService bluetoothGattService;
        private BluetoothGattCharacteristic writeCharacteristic;
        private BluetoothGattCharacteristic notifyCharacteristic;
    
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            getPermission();  //获取权限
            bluetoothInit();    //蓝牙初始化
            widgetInit();       //控件初始化
            widgetListener();   //控件监听
    
        }
    
        //获取权限
        private void getPermission() {
    
            //如果sdk版本大于23
            if (Build.VERSION.SDK_INT >=23){
    
                //如果没有权限
                if ((ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED))
                {
                    //动态申请权限
                    ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, 10);
    
                }
            }
        }
    
        //控件初始化
        private void widgetInit() {
    
            //请自行提升到全局，原型是：Button startscan = findViewById(R.id.startscan);
            btnCheckPermission = findViewById(R.id.btnCheckPermission);
    
            //请自行提升到全局，原型是：TextView tvmsg = findViewById(R.id.tvmsg);
            tvmsg = findViewById(R.id.tvmsg);
    
            //请自行提升到全局，原型是：Button btnSearchBLE = findViewById(R.id.btnSearchBLE);
            btnSearchBLE = findViewById(R.id.btnSearchBLE);
    
            //请自行提升到全局，原型是：TextView getSendText = findViewById(R.id.getSendText);
            getSendText = findViewById(R.id.getSendText);
    
            //请自行提升到全局，原型是：Button btnSend = findViewById(R.id.btnSend);
            btnSend = findViewById(R.id.btnSend);
    
    
    
    
        }
    
        //控件监听
        private void widgetListener() {
    
            //测试权限按钮监听
            btnCheckPermission.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    int permissionCheck = ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION);
                    if (permissionCheck == PackageManager.PERMISSION_GRANTED) {//如果有权限
                        Toast.makeText(MainActivity.this, "hava this permission", Toast.LENGTH_SHORT).show();//toast信息
                        Log.d("权限：","有定位权限");//在logcat上打印信息
                        tvmsg.setText("有定位权限");
                    }else {
                        getPermission();//获取权限
                        Toast.makeText(MainActivity.this, "no this permission", Toast.LENGTH_SHORT).show();//toast信息
                        Log.d("权限：","无定位权限");//在logcat上打印信息
                        tvmsg.setText("无定位权限");
                    }
                }
            });
    
            //搜索蓝牙按钮监听
            btnSearchBLE.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    //开始搜索蓝牙
                    bluetoothAdapter.startLeScan(mBLEScanCallback);
                }
            });
    
            //
            btnSend.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    String res = getSendText.getText().toString();
                    Log.d("发送的数据是",res);
                    byte[] mybyte = bytesHexStrTranslate.StringtoBytes(res);
                    writeCharacteristic.setValue(mybyte);
                    writeCharacteristic.setWriteType(BluetoothGattCharacteristic.WRITE_TYPE_NO_RESPONSE);
                    bluetoothGatt.writeCharacteristic(writeCharacteristic);
                }
            });
    
    
    
        }
    
        //mBLEScanCallback回调函数
        private BluetoothAdapter.LeScanCallback mBLEScanCallback = new BluetoothAdapter.LeScanCallback() {
            @Override
            public void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord) {
    
                //打印蓝牙mac地址
                Log.d("BleMAC", device.getAddress());
                if(device.toString().indexOf(MacHeader) == 0){
                    Log.d("符合的蓝牙地址", device.getAddress());
                    bluetoothAdapter.stopLeScan(mBLEScanCallback);
                    //停止搜索蓝牙，降低功耗
                    bluetoothAdapter.stopLeScan(mBLEScanCallback);
                    //获取远程设备（连接蓝牙）原型是BluetoothDevice mdevice = bluetoothAdapter.getRemoteDevice(des);请自行提升全局
                    mdevice = bluetoothAdapter.getRemoteDevice(device.toString());
                    //连接bluetoothGatt 到这一步时，蓝牙已经连接上了
                    //原型是BluetoothGatt bluetoothGatt = device.connectGatt(MainActivity.this, false, bluetoothGattCallback); 请自行提升全局
                    //bluetoothGattCallback是蓝牙gatt回调函数，接下来会跳到bluetoothGattCallback函数
                    bluetoothGatt = mdevice.connectGatt(MainActivity.this, false, bluetoothGattCallback);
                }
            }
        };
    
    
        //蓝牙回调函数
        private final BluetoothGattCallback bluetoothGattCallback = new BluetoothGattCallback() {
    
            //连接状态改变时回调
            @Override
            public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
                bluetoothGatt.discoverServices();
                if (newState == BluetoothProfile.STATE_CONNECTED) {
                    Log.d("onConnectionStateChange","连接成功");
                }
                else {
                    Log.d("onConnectionStateChange","连接断开");
                }
    
            }
    
    
            //写入成功回调函数
            @Override
            public void onCharacteristicWrite(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {
                super.onCharacteristicWrite(gatt, characteristic, status);
                Log.d("onCharacteristicWrite", "写入成功");
            }
    
    
    
            //UUID搜索成功回调
            @Override
            public void onServicesDiscovered(BluetoothGatt gatt, int status) {
                Log.d("onCharacteristicWrite", "写入成功");
    
                if (status == BluetoothGatt.GATT_SUCCESS) {
                    List<BluetoothGattService> supportedGattServices = bluetoothGatt.getServices();
                    for (int i = 0; i < supportedGattServices.size(); i++) {
                        Log.i("success", "1:BluetoothGattService UUID=:" + supportedGattServices.get(i).getUuid());
                        List<BluetoothGattCharacteristic> listGattCharacteristic = supportedGattServices.get(i).getCharacteristics();
                        for (int j = 0; j < listGattCharacteristic.size(); j++) {
                            Log.i("success", "2:   BluetoothGattCharacteristic UUID=:" + listGattCharacteristic.get(j).getUuid());
                        }
                    }
                } else {
                    Log.e("fail", "onservicesdiscovered收到: " + status);
                }
                //设置serviceUUID,原型是：BluetoothGattService bluetoothGattService = bluetoothGatt.getService(UUID.fromString(SERVICESUUID));
                bluetoothGattService = bluetoothGatt.getService(UUID.fromString(SERVICESUUID));
                //设置写入特征UUID,原型是：BluetoothGattCharacteristic writeCharacteristic = bluetoothGattService.getCharacteristic(UUID.fromString(WRITEUUID));
                writeCharacteristic = bluetoothGattService.getCharacteristic(UUID.fromString(WRITEUUID));
                //设置监听特征UUID,原型是：BluetoothGattCharacteristic notifyCharacteristic = bluetoothGattService.getCharacteristic(UUID.fromString(NOTIFYUUID));
                notifyCharacteristic = bluetoothGattService.getCharacteristic(UUID.fromString(NOTIFYUUID));
                //开启监听
                gatt.setCharacteristicNotification(notifyCharacteristic,true);
                Log.d("uuidconnectsuccess", "uuid连接成功");
    
            }
    
    
            //接受数据回调
            @Override
            public void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
                byte[] value = characteristic.getValue();
                Log.e("ReceiveSuccess", bytesHexStrTranslate.bytesToHexFun1(value));
            }
        };
    
    
    
        private void bluetoothInit() {
    
            //如果不支持蓝牙
            if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE))
            {
                //提示不支持蓝牙
                Toast.makeText(this, "程序不支持该设备", Toast.LENGTH_SHORT).show();
                //退出程序
                finish();
            }
            //创建蓝牙适配器原型是BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
            bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
            //如果蓝牙适配器为空
            if (bluetoothAdapter == null)
            {
                //显示设备无蓝牙
                Toast.makeText(this, "设备无蓝牙", Toast.LENGTH_SHORT).show();
                //退出
                finish();
            }
            //如果蓝牙未开启
            if (!bluetoothAdapter.isEnabled())
            {
                //不提示,直接开启蓝牙
                bluetoothAdapter.enable();
                //提示开启蓝牙中
                Toast.makeText(this, "开启蓝牙中,如果未开启,请检查应用权限", Toast.LENGTH_SHORT).show();
            }
        }
    }
    
    class BytesHexStrTranslate {
        private static final char[] HEX_CHAR = {'0', '1', '2', '3', '4', '5',
                '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
        public static String bytesToHexFun1(byte[] bytes) {
            // 一个byte为8位，可用两个十六进制位标识
            char[] buf = new char[bytes.length * 2];
            int a = 0;
            int index = 0;
            for(byte b : bytes) { // 使用除与取余进行转换
                if(b < 0) {
                    a = 256 + b;
                } else {
                    a = b;
                }
    
                buf[index++] = HEX_CHAR[a / 16];
                buf[index++] = HEX_CHAR[a % 16];
            }
    
            return new String(buf);
        }
    
        public static String bytesToHexFun2(byte[] bytes) {
            char[] buf = new char[bytes.length * 2];
            int index = 0;
            for(byte b : bytes) { // 利用位运算进行转换，可以看作方法一的变种
                buf[index++] = HEX_CHAR[b >>> 4 & 0xf];
                buf[index++] = HEX_CHAR[b & 0xf];
            }
    
            return new String(buf);
        }
    
        public static String bytesToHexFun3(byte[] bytes) {
            StringBuilder buf = new StringBuilder(bytes.length * 2);
            for(byte b : bytes) { // 使用String的format方法进行转换
                buf.append(String.format("%02x", new Integer(b & 0xff)));
            }
    
            return buf.toString();
        }
    
        public static byte[] StringtoBytes(String str) {
            if(str == null || str.trim().equals("")) {
                return new byte[0];
            }
    
            byte[] bytes = new byte[str.length() / 2];
            for(int i = 0; i < str.length() / 2; i++) {
                String subStr = str.substring(i * 2, i * 2 + 2);
                bytes[i] = (byte) Integer.parseInt(subStr, 16);
            }
    
            return bytes;
        }
    
    
    
    }

# 2、布局文件activity\_main.xml #

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context=".MainActivity">
    
        <TextView
            android:layout_width="match_parent"
            android:layout_height="300dp"
            android:text="Hello World!"
            android:id="@+id/tvmsg"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
    
            <Button
                android:layout_weight="1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="测试权限"
                android:id="@+id/btnCheckPermission"
                />
    
            <Button
                android:layout_weight="1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="搜索蓝牙"
                android:id="@+id/btnSearchBLE"
                />
    
    
    
    
    
        </LinearLayout>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="自定义16进制信息"
            />
        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="请输入自定义信息"
            android:id="@+id/getSendText"
            android:inputType="text"
            />
        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="发送信息"
            android:id="@+id/btnSend"
            />
    
    
    
    </LinearLayout>

# 效果图： #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MjM0MDg3_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MjM0MDg3_size_16_color_FFFFFF_t_70 1][]

# 详细的log #

2019-04-24 16:51:09.683 14801-14833/club.stm32 I/vndksupport: sphal namespace is not configured for this process. Loading /vendor/lib64/hw/gralloc.msm8996.so from the current namespace instead.
    2019-04-24 16:51:09.688 14801-14833/club.stm32 I/Adreno: PFP: 0x005ff087, ME: 0x005ff063
    2019-04-24 16:51:09.694 14801-14833/club.stm32 I/OpenGLRenderer: Initialized EGL, version 1.4
    2019-04-24 16:51:09.694 14801-14833/club.stm32 D/OpenGLRenderer: Swap behavior 2
    2019-04-24 16:51:09.760 14801-14833/club.stm32 I/vndksupport: sphal namespace is not configured for this process. Loading /vendor/lib64/hw/gralloc.msm8996.so from the current namespace instead.
    2019-04-24 16:51:30.035 14801-14814/club.stm32 I/zygote64: Do partial code cache collection, code=25KB, data=29KB
    2019-04-24 16:51:30.036 14801-14814/club.stm32 I/zygote64: After code cache collection, code=25KB, data=29KB
    2019-04-24 16:51:30.036 14801-14814/club.stm32 I/zygote64: Increasing code cache capacity to 128KB
    2019-04-24 16:51:39.678 14801-14801/club.stm32 D/Toast: Toast package name=club.stm32
    2019-04-24 16:51:39.681 14801-14801/club.stm32 D/权限：: 有定位权限
    2019-04-24 16:51:39.903 14801-14814/club.stm32 I/zygote64: Compiler allocated 6MB to compile void android.view.ViewRootImpl.performTraversals()
    2019-04-24 16:51:39.926 14801-14814/club.stm32 I/zygote64: Do partial code cache collection, code=61KB, data=60KB
    2019-04-24 16:51:39.927 14801-14814/club.stm32 I/zygote64: After code cache collection, code=61KB, data=60KB
    2019-04-24 16:51:39.927 14801-14814/club.stm32 I/zygote64: Increasing code cache capacity to 256KB
    2019-04-24 16:51:40.957 14801-14801/club.stm32 D/BluetoothAdapter: startLeScan(): null
    2019-04-24 16:51:40.961 14801-14801/club.stm32 D/BluetoothAdapter: isLeEnabled(): ON
    2019-04-24 16:51:40.966 14801-14827/club.stm32 D/BluetoothLeScanner: onScannerRegistered() - status=0 scannerId=10 mScannerId=0
    2019-04-24 16:51:41.031 14801-14801/club.stm32 D/BleMAC: 6A:F1:E0:40:B3:5F
    2019-04-24 16:51:41.041 14801-14801/club.stm32 D/BleMAC: 7D:EE:71:16:22:4D
    2019-04-24 16:51:41.079 14801-14801/club.stm32 D/BleMAC: A5:B3:C2:E3:00:01
    2019-04-24 16:51:41.079 14801-14801/club.stm32 D/符合的蓝牙地址: A5:B3:C2:E3:00:01
    2019-04-24 16:51:41.080 14801-14801/club.stm32 D/BluetoothAdapter: stopLeScan()
    2019-04-24 16:51:41.083 14801-14801/club.stm32 D/BluetoothAdapter: isLeEnabled(): ON
    2019-04-24 16:51:41.087 14801-14801/club.stm32 D/BluetoothAdapter: stopLeScan()
    2019-04-24 16:51:41.089 14801-14801/club.stm32 D/BluetoothAdapter: scan not started yet
    2019-04-24 16:51:41.092 14801-14801/club.stm32 D/BluetoothGatt: connect() - device: A5:B3:C2:E3:00:01, auto: false
    2019-04-24 16:51:41.092 14801-14801/club.stm32 D/BluetoothGatt: registerApp()
    2019-04-24 16:51:41.093 14801-14801/club.stm32 D/BluetoothGatt: registerApp() - UUID=bda24727-4e15-4b74-b6a7-01b809b5bd0f
    2019-04-24 16:51:41.098 14801-14801/club.stm32 D/BleMAC: 1C:0F:04:00:E3:DD
    2019-04-24 16:51:41.098 14801-14827/club.stm32 D/BluetoothGatt: onClientRegistered() - status=0 clientIf=10
    2019-04-24 16:51:43.766 14801-14827/club.stm32 D/BluetoothGatt: onClientConnectionState() - status=0 clientIf=10 device=A5:B3:C2:E3:00:01
    2019-04-24 16:51:43.767 14801-14827/club.stm32 D/BluetoothGatt: discoverServices() - device: A5:B3:C2:E3:00:01
    2019-04-24 16:51:43.772 14801-14827/club.stm32 D/onConnectionStateChange: 连接成功
    2019-04-24 16:51:44.164 14801-14827/club.stm32 D/BluetoothGatt: onConnectionUpdated() - Device=A5:B3:C2:E3:00:01 interval=6 latency=0 timeout=500 status=0
    2019-04-24 16:51:44.733 14801-14827/club.stm32 D/BluetoothGatt: onSearchComplete() = Device=A5:B3:C2:E3:00:01 Status=0
    2019-04-24 16:51:44.734 14801-14827/club.stm32 D/onCharacteristicWrite: 写入成功
    2019-04-24 16:51:44.735 14801-14827/club.stm32 I/success: 1:BluetoothGattService UUID=:00001800-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.736 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00002a00-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.737 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00002a01-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.737 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00002a04-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.738 14801-14827/club.stm32 I/success: 1:BluetoothGattService UUID=:00001801-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.738 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00002a05-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.739 14801-14827/club.stm32 I/success: 1:BluetoothGattService UUID=:0000180a-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.740 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00002a50-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.740 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00002a29-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.741 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00002a24-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.742 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00002a26-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.742 14801-14827/club.stm32 I/success: 1:BluetoothGattService UUID=:0000180f-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.742 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00002a19-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.743 14801-14827/club.stm32 I/success: 1:BluetoothGattService UUID=:0000ff00-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.743 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:0000ff01-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.744 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:0000ff02-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.744 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:0000ff21-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.745 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:0000ff22-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.746 14801-14827/club.stm32 I/success: 1:BluetoothGattService UUID=:00010203-0405-0607-0809-0a0b0c0d1911
    2019-04-24 16:51:44.747 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:00010203-0405-0607-0809-0a0b0c0d2b12
    2019-04-24 16:51:44.747 14801-14827/club.stm32 I/success: 1:BluetoothGattService UUID=:0000fee7-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.747 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:0000fec7-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.748 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:0000fec8-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.748 14801-14827/club.stm32 I/success: 2:   BluetoothGattCharacteristic UUID=:0000fec9-0000-1000-8000-00805f9b34fb
    2019-04-24 16:51:44.752 14801-14827/club.stm32 D/BluetoothGatt: setCharacteristicNotification() - uuid: 0000ff01-0000-1000-8000-00805f9b34fb enable: true
    2019-04-24 16:51:44.754 14801-14827/club.stm32 D/uuidconnectsuccess: uuid连接成功
    2019-04-24 16:51:44.767 14801-14827/club.stm32 D/BluetoothGatt: onConnectionUpdated() - Device=A5:B3:C2:E3:00:01 interval=12 latency=0 timeout=300 status=0
    2019-04-24 16:52:04.332 14801-14814/club.stm32 I/zygote64: Do full code cache collection, code=124KB, data=103KB
    2019-04-24 16:52:04.332 14801-14814/club.stm32 I/zygote64: After code cache collection, code=116KB, data=76KB
    2019-04-24 16:52:04.963 14801-14801/club.stm32 D/发送的数据是: 1111
    2019-04-24 16:52:04.966 14801-14827/club.stm32 D/onCharacteristicWrite: 写入成功
    2019-04-24 16:52:06.653 14801-14801/club.stm32 D/发送的数据是: 1111
    2019-04-24 16:52:06.655 14801-14827/club.stm32 D/onCharacteristicWrite: 写入成功
    2019-04-24 16:52:13.279 14801-14827/club.stm32 E/ReceiveSuccess: 2222
    2019-04-24 16:52:15.245 14801-14827/club.stm32 E/ReceiveSuccess: 2222
    2019-04-24 16:52:34.723 14801-14814/club.stm32 I/zygote64: Do partial code cache collection, code=124KB, data=90KB
    2019-04-24 16:52:34.725 14801-14814/club.stm32 I/zygote64: After code cache collection, code=124KB, data=90KB
    2019-04-24 16:52:34.725 14801-14814/club.stm32 I/zygote64: Increasing code cache capacity to 512KB

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