Android-ble-master.zip_Android 蓝牙4.0_android_android蓝牙_ble andro

Android-ble Android蓝牙4.0操作demo 最近，随着智能穿戴式设备、智能医疗以及智能家居的普及，蓝牙开发在移动开中显得非常的重要。由于公司需要，研究了一下，蓝牙4.0在Android中的应用。以下是我的一些总结。 ## 1.先介绍一下关于蓝牙4.0中的一些名词吧： * (1)GATT(Gneric Attibute Profile) 通过ble连接，读写属性类小数据Profile通用的规范。现在所有的ble应用Profile 都是基于GATT * (2)ATT(Attribute Protocal) GATT是基于ATT Potocal的ATT针对BLE设备专门做的具体就是传输过程中使用尽量少的数据，每个属性都有个唯一的UUID，属性chartcteristics and Service的形式传输。 * (3)Service是Characteristic的集合。 * (4).Characteristic 特征类型。 比如。有个蓝牙ble的血压计。他可能包括多个Servvice，每个Service有包括多个Characteristic 注意：蓝牙ble只能支持Android 4.3以上的系统 SDK>=18 ## 2.以下是开发的步骤： ### 2.1首先获取BluetoothManager > BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE); ### 2.2获取BluetoothAdapter ``` BluetoothAdapter mBluetoothAdapter = bluetoothManager.getAdapter(); ``` ### 2.3创建BluetoothAdapter.LeScanCallback ``` private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() { @Override public void onLeScan(final BluetoothDevice device, int rssi, final byte[] scanRecord) { runOnUiThread(new Runnable() { @Override public void run() { try { String struuid = NumberUtils.bytes2HexString(NumberUtils.reverseBytes(scanRecord)).replace("-", "").toLowerCase(); if (device!=null && struuid.contains(DEVICE_UUID_PREFIX.toLowerCase())) { mBluetoothDevices.add(device); } } catch (Exception e) { e.printStackTrace(); } } }); } }; ``` ### 2.4.开始搜索设备。 ``` mBluetoothAdapter.startLeScan(mLeScanCallback); ``` ### 2.5.BluetoothDevice 描述了一个蓝牙设备 提供了getAddress()设备Mac地址,getName()设备的名称。 ### 2.6开始连接设备 ``` 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. (先前连接的设备。 尝试重新连接) 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; } ``` ### 2.7连接到设备之后获取设备的服务(Service)和服务对应的Characteristic。 ``` // Demonstrates how to iterate through the supported GATT // Services/Characteristics. // In this sample, we populate the data structure that is bound to the // ExpandableListView // on the UI. private void displayGattServices(List gattServices) { if (gattServices == null) return; String uuid = null; ArrayList> gattServiceData = new ArrayList<>(); ArrayList>> gattCharacteristicData = new ArrayList<>(); mGattCharacteristics = new ArrayList<>(); // Loops through available GATT Services. for (BluetoothGattService gattService : gattServices) { HashMap<String, String> currentServiceData = new HashMap<>(); uuid = gattService.getUuid().toString(); if (uuid.contains("ba11f08c-5f14-0b0d-1080")) {//服务的uuid //System.out.println("this gattService UUID is:" + gattService.getUuid().toString()); currentServiceData.put(LIST_NAME, "Service_OX100"); currentServiceData.put(LIST_UUID, uuid); gattServiceData.add(currentServiceData); ArrayList<HashMap<String, String>> gattCharacteristicGroupData = new ArrayList<>(); List<BluetoothGattCharacteristic> gattCharacteristics = gattService.getCharacteristics(); ArrayList<BluetoothGattCharacteristic> charas = new ArrayList<>(); // Loops through available Characteristics. for (BluetoothGattCharacteristic gattCharacteristic : gattCharacteristics) { charas.add(gattCharacteristic); HashMap<String, String> currentCharaData = new HashMap<>(); uuid = gattCharacteristic.getUuid().toString(); if (uuid.toLowerCase().contains("cd01")) { currentCharaData.put(LIST_NAME, "cd01"); } else if (uuid.toLowerCase().contains("cd02")) { currentCharaData.put(LIST_NAME, "cd02"); } else if (uuid.toLowerCase().contains("cd03")) { currentCharaData.put(LIST_NAME, "cd03"); } else if (uuid.toLowerCase().contains("cd04")) { currentCharaData.put(LIST_NAME, "cd04"); } else { currentCharaData.put(LIST_NAME, "write"); } currentCharaData.put(LIST_UUID, uuid); gattCharacteristicGroupData.add(currentCharaData); } mGattCharacteristics.add(charas); gattCharacteristicData.add(gattCharacteristicGroupData); mCharacteristicCD01 = gattService.getCharacteristic(UUID.fromString("0000cd01-0000-1000-8000-00805f9b34fb")); mCharacteristicCD02 = gattService.getCharacteristic(UUID.fromString("0000cd02-0000-1000-8000-00805f9b34fb")); mCharacteristicCD03 = gattService.getCharacteristic(UUID.fromString("0000cd03-0000-1000-8000-00805f9b34fb")); mCharacteristicCD04 = gattService.getCharacteristic(UUID.fromString("0000cd04-0000-1000-8000-00805f9b34fb")); mCharacteristicWrite = gattService.getCharacteristic(UUID.fromString("0000cd20-0000-1000-8000-00805f9b34fb")); //System.out.println("=======================Set Notification=========================="); // 开始顺序监听，第一个：CD01 mBluetoothLeService.setCharacteristicNotification(mCharacteristicCD01, true); mBluetoothLeService.setCharacteristicNotification(mCharacteristicCD02, true); mBluetoothLeService.setCharacteristicNotification(mCharacteristicCD03, true); mBluetoothLeService.setCharacteristicNotification(mCharacteristicCD04, true); } } } ``` ### 2.8获取到特征之后，找到服务中可以向下位机写指令的特征，向该特征写入指令。 public void wirteCharacteristic(BluetoothGattCharacteristic characteristic) { if (mBluetoothAdapter == null || mBluetoothGatt == null) { Log.w(TAG, "BluetoothAdapter not initialized"); return; } mBluetoothGatt.writeCharacteristic(characteristic); } ### 2.9写入成功之后，开始读取设备返回来的数据。 ``` private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() { @Override public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) { String intentAction; //System.out.println("=======status:" + status); if (newState == BluetoothProfile.STATE_CONN