android ble 获取ServiceUUID和CharacteristicUUID,DescriptorUUID的UUID发送指令打开蓝牙锁

ServiceUUID和CharacteristicUUID,DescriptorUUID的介绍参考以下两篇：

https://www.cnblogs.com/xxzjyf/p/x_x_z_j_y_f.html

https://www.jianshu.com/p/3711cfbf7128

BLE 开发找到一个还可以的蓝牙框架：https://github.com/xiaoyaoyou1212/BLE

贴出重要代码如下：

发送数据需要上面提到的三个UUID，一般需要厂家提供，而自己买的蓝牙单片机继电器，没有提供，所有只能自己去查找：

代码：//由于不知道具体哪个UUID写入指令有效，所以把指令（openlock开锁指令字节数组，我这里是16进制的需要转换为字节数组）循环写入所有对象

//框架根据蓝牙地址查找并连接上单片机蓝牙设备

ViseBle.getInstance().connectByMac(bluetoohAddress, new IConnectCallback() {        @Override        public void onConnectSuccess(DeviceMirror deviceMirror) {            linkedDevice.put(Integer.valueOf(clickBluetoohPos),deviceMirror);            bluetoothLeDevice=deviceMirror.getBluetoothLeDevice();            Log.e("link blue", "is ok");            getUUIDAndSendData(deviceMirror);        }        @Override        public void onConnectFailure(BleException exception) {            Log.e("link blue", "is fail=" + exception.getDescription());        }        @Override        public void onDisconnect(boolean isActive) {            Log.e("link blue", "is onDisconnect because " + isActive);        }    });}

private void getUUIDAndSendData(DeviceMirror deviceMirror){        for (int i = 0; i < deviceMirror.getBluetoothGatt().getServices().size(); i++) {            BluetoothGattService bluetoothGattServer = deviceMirror.getBluetoothGatt().getServices().get(i);            serviceUid = bluetoothGattServer.getUuid();            for (int j = 0; j < bluetoothGattServer.getCharacteristics().size(); j++) {                BluetoothGattCharacteristic characteristic = bluetoothGattServer.getCharacteristics().get(j);                characterUid = characteristic.getUuid();                needWriteSum++;                writeToDpjBlooth(deviceMirror, serviceUid, characterUid, openlock);//descriptor值在写书时不是很重要，此次注释，调用填了一个相同的默认值 MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");//                                for (int z = 0; z < characteristic.getDescriptors().size(); z++) {//                                    BluetoothGattDescriptor descriptor = characteristic.getDescriptors().get(z);//                                    //descripUid = descriptor.getUuid();//                                }            }        }    }

//写入指令到单片机蓝牙的方法，openLock 字节数组指令

private void writeToDpjBlooth(final DeviceMirror deviceMirror, UUID serviceId, UUID characterUid, byte[] openLock) {    BluetoothGattChannel bluetoothGattChannel = new BluetoothGattChannel.Builder()            .setBluetoothGatt(deviceMirror.getBluetoothGatt())            .setPropertyType(PropertyType.PROPERTY_WRITE)            .setServiceUUID(serviceId)            .setCharacteristicUUID(characterUid)            .setDescriptorUUID(MY_UUID)            .builder();    deviceMirror.bindChannel(new IBleCallback() {        @Override        public void onSuccess(byte[] data, BluetoothGattChannel bluetoothGattChannel, BluetoothLeDevice bluetoothLeDevice) {            Log.e("link blue", "bind ok="+data.toString());            writeSum++;            if(writeSum>=needWriteSum){//所有需要发送的对象都已经发送完毕，应该已经发送到了对应开锁的属性对象，开锁了                //下面关闭Gatt传输协议和断开蓝牙连接，下次重新连接即可，避免出现Gatt 133状态错误                closeBlueToothGatt(deviceMirror);            }        }        @Override        public void onFailure(BleException exception) {            Log.e("link blue", "bind fail="+exception.toString());            closeBlueToothGatt(deviceMirror);        }    }, bluetoothGattChannel);    deviceMirror.writeData(openLock);}

//关闭蓝牙和Gatt输入通道避免出现Gatt 133状态错误

private void closeBlueToothGatt(DeviceMirror deviceMirror){    deviceMirror.close();    deviceMirror.disconnect();    deviceMirror.clear();    ViseBle.getInstance().disconnect();    ViseBle.getInstance().clear();}

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