Activating bluetooth in background

Question

Is there a way to autoconnect my phone to an paired device without having to activate bluetooth every time? I want to create an app that works in the background and connect to a paired device even if the bluetooth is off.

if(device.getBondState()==device.BOND_BONDED){

Log.d(TAG,device.getName());
//BluetoothSocket mSocket=null;
try {
    mSocket = device.createInsecureRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e1) {
    // TODO Auto-generated catch block
    Log.d(TAG,"socket not created");
    e1.printStackTrace();
}
try{
    mSocket.connect();
}
catch(IOException e){
    try {
        mSocket.close();
        Log.d(TAG,"Cannot connect");
    } catch (IOException e1) {
        Log.d(TAG,"Socket not closed");
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
}

This code connects the device to a already paired device but the user needs to turn on the bluetooth every time to use my app. I need to know if there is a way to listen if the device that I'm paired to is present and connect to it without turning on the bluetooth every time?

What code have you tried? Or are you simply asking how to use your device? — Joshua Drake
I have no idea from where start coding but i know that there is a way to auto connect to the paired device — moa101
Per our guidelines we do not do recommendations or basic documentation. You'll need to bring some code and the specific error you get when running it. Do you have a hello world app running yet? If not I'd start with a tutorial of that nature. — Joshua Drake
Given your update, I do not see how you can tell if a Bluetooth device is nearby if Bluetooth is off. It would be like trying to turn on a radio whenever a signal is present, but if the radio is off how would you know that a signal is present? — Joshua Drake

moa101 moa101 · Accepted Answer · 2017-04-28T18:32:10

if(device.getBondState()==device.BOND_BONDED){

    Log.d(TAG,device.getName());
    //BluetoothSocket mSocket=null;
    try {


        mSocket = device.createInsecureRfcommSocketToServiceRecord(MY_UUID);
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        Log.d(TAG,"socket not created");
        e1.printStackTrace();
    }
    try{

        mSocket.connect();

    }
    catch(IOException e){
        try {

            mSocket.close();
            Log.d(TAG,"Cannot connect");
        } catch (IOException e1) {
            Log.d(TAG,"Socket not closed");
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }


    }

This code connect the device to a already paired device but the user need to turn on the bluetooth every time to use my app. i need to know if there is a way to listen if the device that i m paired to are present and connect to it without turning on the bluetooth every time ???

Activating bluetooth in background

1 Answers