/** 关闭设备 */
private void closeClientDevice() {
if (mInputStream != null) {
try {
mInputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (mOutputStream != null) {
try {
mOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (mBluetoothSocketWrapper != null) {
try {
mBluetoothSocketWrapper.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 打开连接
*
* @return 连接状态
*/
public boolean connectDevice() {
// 0、判断本机是否支持蓝牙设备
if (mBluetoothAdapter == null) {
showTips(R.string.device_local_unsupport_bluetooth);
return false;
}
Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices(); // 获取所有已配对的设备
// 1、没有配对的设备
if (pairedDevices.size() <= 0) {
showTips(
String.format(
mActivity.getResources().getString(R.string.device_idcard_no_bonded_devices),
DEVICE_NAME));
return false;
}
BluetoothDevice adaptedDevice = null;
for (Iterator<BluetoothDevice> iterator = pairedDevices.iterator(); iterator.hasNext(); ) {
BluetoothDevice device = (BluetoothDevice) iterator.next();
log.i(TAG, "name=" + device.getName() + ",address=" + device.getAddress());
if (DEVICE_NAME.equals(device.getName())) {
adaptedDevice = device;
break;
}
}
// 2、没有合适的配对设备
if (adaptedDevice == null) {
showTips(
String.format(
mActivity.getResources().getString(R.string.device_idcard_no_bonded_devices),
DEVICE_NAME));
return false;
}
// 3、蓝牙设备没有打开时打开设备
if (!mBluetoothAdapter.isEnabled()) {
mBluetoothAdapter.enable();
}
// 创建服务器端的监听
mAcceptThread = new AcceptThread();
mAcceptThread.start();
// 4、创建蓝牙Socket
try {
mBluetoothConnector = new BluetoothConnector(adaptedDevice, mBluetoothAdapter);
// 5、连接读卡器设备
mBluetoothSocketWrapper = mBluetoothConnector.connect();
// 6、获取输入输出流
mInputStream = mBluetoothSocketWrapper.getInputStream();
mOutputStream = mBluetoothSocketWrapper.getOutputStream();
// 7、连接成功后血压仪会发送"READY"过来,如果安卓设备成功接收到"READY"说明连接成功了,就可以发送"TOK"指令
byte[] buffer = new byte[5];
int length = mInputStream.read(buffer);
if (length != 5
|| buffer[0] != 'R'
|| buffer[1] != 'E'
|| buffer[2] != 'A'
|| buffer[3] != 'D'
|| buffer[4] != 'Y') {
showTips(R.string.device_connect_failure);
return false;
}
// 结果应该是READY
log.i(TAG, "read data=" + HexBinary.bytesToHexStringPrint(buffer, 0, length));
// 8、如果buffer中是"READY"则继续,发送"TOK"指令
byte[] sendCmd = new byte[] {0x54, 0x4f, 0x4b, (byte) 0xff, (byte) 0xff};
mOutputStream.write(sendCmd);
mOutputStream.flush();
// 写入输出流后,要等待500ms,服务端处理延时500ms
Thread.sleep(500);
// 然后紧接着接收来自服务端也就是血压仪的返回信息,如果成功的话返回"OK"
buffer = new byte[2];
length = mInputStream.read(buffer);
if (length != 2 || buffer[0] != 'O' || buffer[1] != 'K') {
showTips(R.string.device_connect_failure);
return false;
}
log.i(TAG, "跟设备连接成功！");
} catch (IOException e) {
e.printStackTrace();
showTips(R.string.device_connect_exception);
return false;
} catch (InterruptedException e) {
e.printStackTrace();
showTips(R.string.device_connect_exception);
return false;
} finally {
closeClientDevice();
}
showTips(R.string.device_connect_success);
return true;
}