通过蓝牙将数据从android应用发送到树莓派（python）

Question

正如标题所述，我正在尝试从Android手机发送数据，我已通过蓝牙与树莓派配对。我当前的问题是，由于android代码将其放入IOException Catch中，因此出现了连接超时问题。 任何解决方案，方向或见识将不胜感激。

android代码如下：

public void onClickBtn(View v) {
    BluetoothAdapter blueAdapter = BluetoothAdapter.getDefaultAdapter();
    if (blueAdapter != null) {
            Toast err;
            if (blueAdapter.isEnabled()) {
                Set<BluetoothDevice> bondedDevices = blueAdapter.getBondedDevices();
            if(bondedDevices.size() > 0) {
                Object[] devices = (Object[]) bondedDevices.toArray();
                BluetoothDevice device = (BluetoothDevice) devices[0];
                try {
                    BluetoothSocket socket = device.createRfcommSocketToServiceRecord(UUID.fromString("11111111-1111-1111-1111-111111111111"));
                    socket.connect();
                    outputStream = socket.getOutputStream();
                    inStream = socket.getInputStream();
                    TextView tv0 = findViewById(R.id.textView0);
                    TextView tv1 = findViewById(R.id.textView1);
                    TextView tv2 = findViewById(R.id.textView2);
                    Spinner spinner = (Spinner) findViewById(R.id.spinner);
                    String eff = spinner.getSelectedItem().toString();
                    String out = eff + ',' + tv0.getText() + ',' + tv1.getText() + ',' + tv2.getText();
                    outputStream.write(out.getBytes());
                } catch (IOException e) {
                    err = Toast.makeText(getApplicationContext(), "Unexpected Error", Toast.LENGTH_LONG);
                    err.show();
                }
            }
            err = Toast.makeText(getApplicationContext(),"No Device Connected", Toast.LENGTH_LONG);
            err.show();
        } else {
            err = Toast.makeText(getApplicationContext(),"Bluetooth Disabled", Toast.LENGTH_LONG);
            err.show();
        }
    }
}

Python代码如下：

import bluetooth
import redis

r = redis.StrictRedis(host='localhost', port=6379,db=0)
hostMACAddress = 'B8:27:EB:F1:69:D9' 
port = 3 
backlog = 1
size = 1024
s = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
s.bind((hostMACAddress, port))
s.listen(backlog)
uuid = "11111111-1111-1111-1111-111111111111"
bluetooth.advertise_service( s, "LedPiServer",
                  service_id = uuid
                           )
try:
    client, clientInfo = s.accept()
    while 1:
        data = client.recv(size)
        if data:
            data = data.split(',')
            r.set('effect', data[0])
            tmp = tuple(int(data[1][i:i+2], 16) for i in (0, 2 ,4))
            r.set('l1', tmp[0] + ',' + tmp[1] + ',' + tmp[2])
            tmp = tuple(int(data[2][i:i+2], 16) for i in (0, 2 ,4))
            r.set('l2', tmp[0] + ',' + tmp[1] + ',' + tmp[2])
            tmp = tuple(int(data[3][i:i+2], 16) for i in (0, 2 ,4))
           r.set('l3', tmp[0] + ',' + tmp[1] + ',' + tmp[2])
except: 
    print("Closing socket")
    client.close()
    s.close()