I know google just came out with a cross platform api for ios and android devices to communicate with each other. I don’t know what you’re exactly looking for but this one lets you pass small binary payloads between Android and IOS devices. they don’t have to be on the same network at all either … Read more
Think of it a bit like the difference between opening a TCP connection to a port you specify by number, and opening one to a port you look up by name from /etc/services. createRfcommSocketToServiceRecord takes the UUID you pass and uses SDP to decide what radio channel to use for the connection. It also checks … Read more
Entering a PIN is actually an outdated method of pairing, now called Legacy Pairing. Secure Simple Pairing Mode is available in Bluetooth v2.1 and later, which comprises most modern Bluetooth devices. SSPMode authentication is handled by the Bluetooth protocol stack and thus works without user interaction. Here is how one might go about connecting to … Read more
UPDATE: The btsnoop hci log seems to be getting phased out of the user-accessible areas on a lot of phones. Assuming you have hci logging enabled, you can get a bugreport adb bugreport anewbugreportfolder Then decompress the folder. If you’re lucky there is an ‘FS’ folder that contains the btsnoop_hci.log log several layers down (not … Read more
I have also used following link as others have suggested you for bluetooth communication. http://developer.android.com/guide/topics/connectivity/bluetooth.html The thing is all you need is a class BluetoothChatService.java this class has following threads: Accept Connecting Connected Now when you call start function of the BluetoothChatService like: mChatService.start(); It starts accept thread which means it will start looking for … Read more
Using bluetooth for localization is a very well known research field (ref.). The short answer is: you can’t. Signal strength isn’t a good indicator of distance between two connected bluetooth devices, because it is too much subject to environment condition (is there a person between the devices? How is the owner holding his/her device? Is … Read more
A little bit of research into Sam’s answer that I thought I’d share You can do so without utilizing private API, but with a few caveats: It will only work on iOS 5.0+ It will only work on devices that support the bluetooth LE spec (iPhone 4S+, 5th Generation iPod+, iPad 3rd Generation+) Simply allocating … Read more
Please remember to close your Input/output streams first, then close the socket. By closing the streams, you kick off the disconnect process. After you close the socket, the connection should be fully broken down. If you close the socket before the streams, you may be bypassing certain shutdown steps, such as the (proper) closing of … Read more
private OutputStream outputStream; private InputStream inStream; private void init() throws IOException { BluetoothAdapter blueAdapter = BluetoothAdapter.getDefaultAdapter(); if (blueAdapter != null) { if (blueAdapter.isEnabled()) { Set<BluetoothDevice> bondedDevices = blueAdapter.getBondedDevices(); if(bondedDevices.size() > 0) { Object[] devices = (Object []) bondedDevices.toArray(); BluetoothDevice device = (BluetoothDevice) devices[position]; ParcelUuid[] uuids = device.getUuids(); BluetoothSocket socket = device.createRfcommSocketToServiceRecord(uuids[0].getUuid()); socket.connect(); outputStream = socket.getOutputStream(); … Read more
I just had the same problem. If you see the source code of BluetoothGatt.java you can see that there is a method called refresh() /** * Clears the internal cache and forces a refresh of the services from the * remote device. * @hide */ public boolean refresh() { if (DBG) Log.d(TAG, “refresh() – device: … Read more