How can i obtain the data sent via bluetooth? Kivy application

Question

This is my little Kivy project. My goal for now is to send a string (message) to my PC and print it print(message):

main.py

import kivy

from kivy.app import App
from kivy.uix.button import Button
from bluetooth import AndroidBluetoothClass

kivy.require("2.1.0")


# class in which we are creating the button
class ButtonApp(App):

    def build(self):
        # use a (r, g, b, a) tuple
        self.btn = Button(text="Push Me !",
                          font_size="20sp",
                          background_color=(1, 1, 1, 1),
                          color=(1, 1, 1, 1),
                          size=(32, 32),
                          size_hint=(.2, .2),
                          pos=(300, 250))

        # bind() use to bind the button to function callback
        self.btn.bind(on_press=self.callback)
        return self.btn

    # callback function tells when button pressed
    def callback(self, event):
        try:
            a = AndroidBluetoothClass()
            a.getAndroidBluetoothSocket('MSI')
            a.BluetoothSend("Balls")
        except Exception as e:
            self.btn.text = str(e)


root = ButtonApp()

root.run()

bluetooth.py (src: Can't send bluetooth from Kivy App on Android)

from jnius import autoclass


class AndroidBluetoothClass:

    def getAndroidBluetoothSocket(self, DeviceName):
        paired_devices = self.BluetoothAdapter.getDefaultAdapter().getBondedDevices().toArray()
        socket = None
        for device in paired_devices:
            if device.getName() == DeviceName:
                socket = device.createRfcommSocketToServiceRecord(
                    self.UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"))
                self.ReceiveData = self.BufferReader(self.InputStream(socket.getInputStream()))
                self.SendData = socket.getOutputStream()
                socket.connect()
                self.ConnectionEstablished = True
                print('Bluetooth Connection successful')
        return self.ConnectionEstablished

    def BluetoothSend(self, Message, *args):
        if self.ConnectionEstablished == True:
            self.SendData.write(Message)
        else:
            print('Bluetooth device not connected')

    def BluetoothReceive(self, *args):
        DataStream = ''
        if self.ConnectionEstablished == True:
            DataStream = str(self.ReceiveData.readline())
        return DataStream

    def __init__(self):
        self.BluetoothAdapter = autoclass('android.bluetooth.BluetoothAdapter')
        self.BluetoothDevice = autoclass('android.bluetooth.BluetoothDevice')
        self.BluetoothSocket = autoclass('android.bluetooth.BluetoothSocket')
        self.UUID = autoclass('java.util.UUID')
        self.BufferReader = autoclass('java.io.BufferedReader')
        self.InputStream = autoclass('java.io.InputStreamReader')
        self.ConnectionEstablished = False

    def __del__(self):
        print('class AndroidBluetooth destroyer')

How can i collect the data sent by my android application? There is a way? Hope you can help me :D

If you need it buildozer.spec

[app]
title = wtheeel
version = 1.1
package.name = wtheeel
package.domain = test.able
source.dir = .
source.include_exts = py,png,jpg,kv,atlas

android.permissions =
    FOREGROUND_SERVICE,
    BLUETOOTH,
    BLUETOOTH_ADMIN,
    BLUETOOTH_SCAN,
    BLUETOOTH_CONNECT,
    BLUETOOTH_ADVERTISE,
    ACCESS_FINE_LOCATION

requirements = kivy==2.1.0,python3,able_recipe
services = Able:service.py:foreground

android.accept_sdk_license = True

# android.api = 31
# android.minapi = 31

[buildozer]
warn_on_root = 1
# (int) Log level (0 = error only, 1 = info, 2 = debug (with command output))
log_level = 2

I tried with the socket library but i was already expecting a bad news. server.py

import socket

hostMACAddress = 'my mac address'
port = 4
backlog = 1
size = 1024
s = socket.socket(socket.AF_BLUETOOTH, socket.SOCK_STREAM, socket.BTPROTO_RFCOMM)
s.bind((hostMACAddress, port))
s.listen(backlog)
try:
    client, address = s.accept()
    while 1:
        data = client.recv(size)
        if data:
            print(data)
            client.send(data)
except:
    print("Closing socket")
    client.close()
    s.close()

How can i obtain the data sent via bluetooth? Kivy application

0 Answers0