bluetooth

问题 I have this problem is that in flutter I notice there is not able to operate or use the traditional bluetooth as there is no any library supporting it. I have tested flutter_blue-master etc. So then I saw that it can behave as beacon. So I have used the codes below. For android I just set Region( identifier: 'com.example.myDeviceRegion',)); its able to work. So the same I set in IOS its not able to work? So what is best workaround for blueetooth in flutter? I am using this package flutter

问题 I have this problem is that in flutter I notice there is not able to operate or use the traditional bluetooth as there is no any library supporting it. I have tested flutter_blue-master etc. So then I saw that it can behave as beacon. So I have used the codes below. For android I just set Region( identifier: 'com.example.myDeviceRegion',)); its able to work. So the same I set in IOS its not able to work? So what is best workaround for blueetooth in flutter? I am using this package flutter

问题 After steeping in the wrong path for almost two months i found out what my mistake was. Now i am pacing a new problem which I cannot find the answer to: Using this function while trying to connect to the headset: mBluetoothAdapter.getProfileProxy(context, mProfileListener, BluetoothProfile.HEADSET); final BluetoothProfile.ServiceListener mProfileListener = new BluetoothProfile.ServiceListener() { public void onServiceConnected(int profile, BluetoothProfile proxy) { if (profile ==

问题 After steeping in the wrong path for almost two months i found out what my mistake was. Now i am pacing a new problem which I cannot find the answer to: Using this function while trying to connect to the headset: mBluetoothAdapter.getProfileProxy(context, mProfileListener, BluetoothProfile.HEADSET); final BluetoothProfile.ServiceListener mProfileListener = new BluetoothProfile.ServiceListener() { public void onServiceConnected(int profile, BluetoothProfile proxy) { if (profile ==

问题 Background A long time ago I was tasked with making a android app for the Wii Balance Board, after some screwing around I found that android no longer supported L2CAP. More research lead to understand that it was being re-added in Android 10. With Android 10 out I've been trying to give it a crack now. Problem So my simple goal at the moment is to create a connection with the Wii Balance Board. My approach for connection is: Start discovery Add discovered bluetooth devices to list When you

问题 I am attempting to detect battery levels for connected BT devices on macOS. While I can get CBCentralManager to detect SOME nearby devices, all of the devices it detects are name=Null, even though there are numerous devices that should be detected and should have names (e.g., AirPods, magic trackpad, magic keyboard, etc). My BT Manager class is: import Cocoa import CoreBluetooth class BluetoothManager: NSObject, CBCentralManagerDelegate, CBPeripheralDelegate { var centralManager =

问题 I am attempting to detect battery levels for connected BT devices on macOS. While I can get CBCentralManager to detect SOME nearby devices, all of the devices it detects are name=Null, even though there are numerous devices that should be detected and should have names (e.g., AirPods, magic trackpad, magic keyboard, etc). My BT Manager class is: import Cocoa import CoreBluetooth class BluetoothManager: NSObject, CBCentralManagerDelegate, CBPeripheralDelegate { var centralManager =

问题 We are working on a bluetooth project using cordova as a xplatform development tool. We are developing for android and iOS and writing a BLE plugin for cordova ourselves. On Android everything is running fine. Now comes the problem: On iOS we are able to read/write and even subscribe to notifications. The problem comes when we try to receive a updated value, then nothing happens. In short - connect to device - discover services - discover characterics - subscribe to notification

问题 I'm slightly familiar with BLE and I am facing some problem with an inherited code. So the app works like that: With BLE enabled the app scans for devices The app displays the devices found The user selects the device to pair with The app pairs with the device The problem I'm facing is that after pairing several times (it varies) the phone is not able to discover devices, hence blocking the user to pair. I'm using GattServer to connect with the client device, and I'm reseting the services as

问题 I'm trying to communicate with a Sewoo LK-P32 printer via Bluetooth. For this, I am using Delphi XE7 . I made a few examples that come with Delphi and am not having success. I put the paired printer on tablet and even then I am not able to print continuously. When I print something have to restart the application, so I can print something again. Below my sources. Could someone help me? Support on this issue? My time is short to try other technologies. Method that initiates communication with