bluetooth

来源： https://stackoverflow.com/questions/35337655/how-to-get-remote-devices-custom-bluetooth-name-in-android

来源： https://stackoverflow.com/questions/35337655/how-to-get-remote-devices-custom-bluetooth-name-in-android

来源： https://stackoverflow.com/questions/35337655/how-to-get-remote-devices-custom-bluetooth-name-in-android

问题 I add bluetooth to my app but am running into the following problem. When I do the code: BluetoothAdapter bluetoothAdapter=BluetoothAdapter.getDefaultAdapter(); if (bluetoothAdapter == null) { Toast.makeText(getApplicationContext(),"Device doesnt Support Bluetooth",Toast.LENGTH_SHORT).show(); } if(!bluetoothAdapter.isEnabled()) { Intent enableAdapter = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableAdapter, 0); } The error is on the following line: if(

问题 I add bluetooth to my app but am running into the following problem. When I do the code: BluetoothAdapter bluetoothAdapter=BluetoothAdapter.getDefaultAdapter(); if (bluetoothAdapter == null) { Toast.makeText(getApplicationContext(),"Device doesnt Support Bluetooth",Toast.LENGTH_SHORT).show(); } if(!bluetoothAdapter.isEnabled()) { Intent enableAdapter = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableAdapter, 0); } The error is on the following line: if(

问题 I've been asked to develop an app with the core functionality of reading RFID chips in pets and checking those identification numbers against a database through some web service. I was first directed towards iCarte, supposed maker of an NFC/RFID Reader accessory for iPhone. I sent them an email that was immediately returned due to them exceeding their mailbox quota, so I suppose they are out of business? Other solutions come in the form of Bluetooth ready readers, like those from Serialio.

问题 I've been asked to develop an app with the core functionality of reading RFID chips in pets and checking those identification numbers against a database through some web service. I was first directed towards iCarte, supposed maker of an NFC/RFID Reader accessory for iPhone. I sent them an email that was immediately returned due to them exceeding their mailbox quota, so I suppose they are out of business? Other solutions come in the form of Bluetooth ready readers, like those from Serialio.

问题 I'm using a bluetooth dongle to try and send information from ubuntu 15.04 to raspberry pi b+ running the latest debian jessie image. I'm just following the http://people.csail.mit.edu/albert/bluez-intro/ tutorial. I got the simple RFCOMM and L2CAP protocols working. I'm having trouble running the SDP protocol. The server code is - from bluetooth import * server_sock = BluetoothSocket(RFCOMM) server_sock.bind(("", PORT_ANY)) server_sock.listen(1) advertise_service(server_sock, "SampleServer"

问题 Is it possible to search for beacon data (uuid, url, ...) with a progressive web application using just web technologies that is without using native mobile technologies (Android, ios, ...)? Thanks in advance. 回答1: Unfortunately, this is not possible as of July 2020. While Google has been working on the WebBluetooth project to bring support for many bluetooth operations to the browser, at least in Google Chrome implementations on Android 6+, Mac or ChromeOS. Scanning for beacons is not yet

问题 I am working on a project which can play music via HFP device. But here's a problem that I want to detect whether an HFP or A2DP is connected when music is playing. Now I am using the AVFoundation framework to do this. Here's the code: - (BOOL)isConnectedToBluetoothPeripheral { BOOL isMatch = NO; NSString* categoryString = [AVAudioSession sharedInstance].category; AVAudioSessionCategoryOptions categoryOptions = [AVAudioSession sharedInstance].categoryOptions; if ((![categoryString