bluetooth – Page 6 – Tarik Billa

How can I avoid or dismiss Android’s Bluetooth pairing notification when I am doing programmatic pairing?

May 13, 2023 by Tarik

Try setting the confirmation first in the PAIRING_REQUEST BluetoothDevice device = intent.getParcelableExtra(“android.bluetooth.device.extra.DEVICE”); device.getClass().getMethod(“setPairingConfirmation”, boolean.class).invoke(device, true); device.getClass().getMethod(“cancelPairingUserInput”).invoke(device); This worked for me between two Android devices using RFCOMM but I’m not entering any PINs

How to prevent Android bluetooth RFCOMM connection from dying immediately after .connect()?

May 13, 2023 by Tarik

Try to change your code for creating RfcommSocket: sock = zee.createRfcommSocketToServiceRecord( UUID.fromString(“8e1f0cf7-508f-4875-b62c-fbb67fd34812”)); for this code: Method m = zee.getClass().getMethod(“createRfcommSocket”, new Class[] { int.class }); sock = (BluetoothSocket) m.invoke(device, 1); Also try to change argument value in range 1-3 in this m.invoke(device, 1); When connection will be Connected, but aborted when you try reading, call in … Read more

Service discovery failed exception using Bluetooth on Android

May 10, 2023 by Tarik

After three days I got it figured out thanks to some very helpful posts. I had to replace: tmp = device.createRfcommSocketToServiceRecord(MY_UUID); with: Method m = device.getClass().getMethod(“createRfcommSocket”, new Class[] {int.class}); tmp = (BluetoothSocket) m.invoke(device, 1); and voilà it works!

Android – Bluetooth discovery doesn’t find any device

May 9, 2023 by Tarik

What version of Android are you running this on? If it is Android 6.x, I believe you need to add the ACCESS_FINE_LOCATION permission to your manifest. For example: <uses-permission android:name=”android.permission.ACCESS_FINE_LOCATION”/> I had a similar issue and this fixed it for me. UPDATE: Adding documentation direct from Google on this: To access the hardware identifiers of … Read more

Android + Pair devices via bluetooth programmatically

May 7, 2023 by Tarik

In my first answer the logic is shown for those who want to go with the logic only. I think I was not able to make clear to @chalukya3545, that’s why I am adding the whole code to let him know the exact flow of the code. BluetoothDemo.java public class BluetoothDemo extends Activity { ListView … Read more

How to get list of available Bluetooth devices?

May 4, 2023 by Tarik

This guide looks promising for Bluetooth 3.0. Remember that the CoreBluetooth framework is ONLY for Bluetooth Low Energy (4.0). At bluetooth.com’s dev-pages you can see some examples of globally defined services, and as Guan Yang mentionen, you can see that the heart rate service is 0x180D. UUID`s of the unit is defined by the manufacturer. … Read more

iOS Core Bluetooth : Getting API MISUSE Warning

May 2, 2023 by Tarik

You have to wait until the [-CBCentralManagerDelegate centralManagerDidUpdateState:] callback has been called. And then, verify that the state is PoweredOn before you start scanning for peripherals.

How to receive serial data using android bluetooth

April 27, 2023 by Tarik

try this code : Activity: package Android.Arduino.Bluetooth; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.widget.TextView; import android.widget.EditText; import android.widget.Button; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.Set; import java.util.UUID; public class MainActivity extends Activity { TextView myLabel; EditText myTextbox; BluetoothAdapter mBluetoothAdapter; BluetoothSocket mmSocket; BluetoothDevice mmDevice; … Read more

Use BlueZ Stack As A Peripheral (Advertiser)

April 21, 2023 by Tarik

With your Bluetooth dongle plugged in, running the following command will tell you the device name and give its state: $ hciconfig The output should look something like this: hci0: Type: BR/EDR Bus: USB BD Address: 00:01:02:aa:bb:cc ACL MTU: 1021:8 SCO MTU: 64:1 DOWN RX bytes:1000 acl:0 sco:0 events:47 errors:0 TX bytes:1072 acl:0 sco:0 commands:47 … Read more

Error checking if Bluetooth is enabled in Android (REQUEST_ENABLE_BT cannot be resolved to a variable)

April 19, 2023 by Tarik

REQUEST_ENABLE_BT is a request code that you provide. It’s really just a number that you provide for onActivityResult. It will be the requestCode (first parameter) of onActivityResult when the activity returns. You could put any number you want as long as it’s consistent in the return method. In other words, put a line like this … Read more