android蓝牙串口接收数据

1. android蓝牙开发，PC端模拟串口接收字符，该如何编程

您好，android蓝牙这方面还是很好搞的，因为大家的方式都是差不多的。先说说如何开启蓝牙设备和设置可见时间：

private void search() {
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
if (!adapter.isEnabled()) {
adapter.enable();
}
Intent enable = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
enable.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 3600); //3600为蓝牙设备可见时间
startActivity(enable);
Intent searchIntent = new Intent(this, ComminuteActivity.class);
startActivity(searchIntent);
}

首先，需要获得一个BluetoothAdapter，可以通过getDefaultAdapter()获得系统默认的蓝牙适配器，当然我们也可以自己指定，但这个真心没有必要，至少我是不需要的。然后我们检查手机的蓝牙是否打开，如果没有，通过enable()方法打开。接着我们再设置手机蓝牙设备的可见，可见时间可以自定义。

完成这些必要的设置后，我们就可以正式开始与蓝牙模块进行通信了：

public class ComminuteActivity extends Activity {
private BluetoothReceiver receiver;
private BluetoothAdapter bluetoothAdapter;
private List<String> devices;
private List<BluetoothDevice> deviceList;
private Bluetooth client;
private final String lockName = "BOLUTEK";
private String message = "000001";
private ListView listView;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search_layout);

listView = (ListView) this.findViewById(R.id.list);
deviceList = new ArrayList<BluetoothDevice>();
devices = new ArrayList<String>();
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
bluetoothAdapter.startDiscovery();
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
receiver = new BluetoothReceiver();
registerReceiver(receiver, filter);

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
setContentView(R.layout.connect_layout);
BluetoothDevice device = deviceList.get(position);
client = new Bluetooth(device, handler);
try {
client.connect(message);
} catch (Exception e) {
Log.e("TAG", e.toString());
}
}
});
}

@Override
protected void onDestroy() {
unregisterReceiver(receiver);
super.onDestroy();
}

private final Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case Bluetooth.CONNECT_FAILED:
Toast.makeText(ComminuteActivity.this, "连接失败", Toast.LENGTH_LONG).show();
try {
client.connect(message);
} catch (Exception e) {
Log.e("TAG", e.toString());
}
break;
case Bluetooth.CONNECT_SUCCESS:
Toast.makeText(ComminuteActivity.this, "连接成功", Toast.LENGTH_LONG).show();
break;
case Bluetooth.READ_FAILED:
Toast.makeText(ComminuteActivity.this, "读取失败", Toast.LENGTH_LONG).show();
break;
case Bluetooth.WRITE_FAILED:
Toast.makeText(ComminuteActivity.this, "写入失败", Toast.LENGTH_LONG).show();
break;
case Bluetooth.DATA:
Toast.makeText(ComminuteActivity.this, msg.arg1 + "", Toast.LENGTH_LONG).show();
break;
}
}
};

private class BluetoothReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (isLock(device)) {
devices.add(device.getName());
}
deviceList.add(device);
}
showDevices();
}
}

private boolean isLock(BluetoothDevice device) {
boolean isLockName = (device.getName()).equals(lockName);
boolean isSingleDevice = devices.indexOf(device.getName()) == -1;
return isLockName && isSingleDevice;
}

private void showDevices() {
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,
devices);
listView.setAdapter(adapter);
}
}

2. android蓝牙串口通信，接收数据问题

http://stackoverflow.com/questions/16089261/how-to-convert-byte-valueto-hex-and-then-to-decimal-which-is-from-bluetooth-spp

3. Android蓝牙通信是怎么获取串口数据

代码片段上传一下
private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
BluetoothServerSocket bss = BluetoothAdapter.getDefaultAdapter() .(NAME_SECURE, MY_UUID);
就可以对SOCKET进行读写操作了

4. Android手机端通过socket接收蓝牙模块串口发来的字符串，出现字符串被截断现象，求解决办法，万分感谢！

在while循环外部的上方申明：
String sda="";

将while循环里面的 String sda = new String(byte_data);
改为：sda+=new String(byte);

最后将while循环里面的 System.out.println("收到的数据sda为："+sda);
移到while循环外部的下方。

5. Android蓝牙BLE连接如何设置串口，数据格式为含1位起始位、7位数据位、1位奇偶校验位和1位终止位

字符长度=1+7+1+2=11 b/字符
数据速率R1=11×100=1100 b/s
有效数据速率R=7×100=700 b/s
选B