android-bluetooth

I'm trying to use the function BluatoothLeScanner.startScan instead of the deprecated one BluetoothAdapter.startLeScan . Yesterday I updated my Nexus 5 to Android 6.0 and since that moment my app does not work anymore. I firstly add the preferences required ACCESS_COARSE_LOCATION as found here, https://developer.android.com/about/versions/marshmallow/android-6.0-changes.html#behavior-hardware-id . Then I added the permission as described here: https://developer.android.com/training/permissions/requesting.html . But at the end it seems not working, it does not send back the ble devices. This is

I've been searching the internet and haven't seen anything in the way of how to exactly implement OOB pairing. I was hoping somebody here could point me to some example code to help me out. The chat example in the Android developers site didn't really dive into this type of pairing at all. Basically, I have an Android tablet that I want to securely pair with a device, written in C++, that has no built in display/IO mechanism. The tablet to be paired will act as the GUI/IO interface and I'll send message back and fourth over Bluetooth. Thus I want to securely pair the tablet with each device

Microchip defined a way to stream data over BlueTooth low energy (BLE) and called it MLDP (Microchip Low-energy Data Profile). They built it into their RN4020 chip, and there is even an sample Android app . However, I can't find any specification of how the protocol works or source for the app. I'd like to be able to use it to debug an embedded device from Android and/or iOS. Does anyone know the specification for this protocol or software that implements it? Hi i was in the same problem, but at this moment i have a working code with MLDP, first you need to go to the Module web page: http:/

In My project Need to print Pdf file Via Bluetooth Printer. I write a code to print via pdf Its for fine for a Text, But I want to Print PDF file on Bluetooth printer. My java Code to Print Text @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); lv= (ListView) findViewById(R.id.listView1); // listdata(lv); try { // we are goin to have three buttons for specific functions Button openButton = (Button) findViewById(R.id.open); Button sendButton = (Button) findViewById(R.id.send); Button closeButton = (Button)

I am developing an android application with bluetooth chat. I have successfully implemented bluetooth chat with two phones.But my problem is that if I Change to next activity from the chatting activity the connection is lost then I am not able to send messages from second activity. How can I maintain my connection? That is I want to stay connected through out my app. Whenever the user press on exit button then only the connection can disconnect. I want to send message from one activity and receive from another activity this is what I want. I am not able to create a background service with my

I have a problem trying to connect to a peripheral. Sometimes the callback onConnectionStateChange(...) is not called after BluetoothDevice#connectGatt(...) . What I'm trying to achieve is fast and short connections triggered by user action. This situation occurs about 1 in 10 times without specific prior action. It lasts about 20 to 30 seconds or until the application is killed and reopened. The normal sequence of steps I follow is: Scan devices to find the peripheral. Call BluetoothDevice#connectGatt(...) . If it takes longer than 1 second to connect, it means that the connection is "stuck"