problem description I have two ViewController, one ViewA to search and display the Bluetooth list, and one ViewB to control the operation of Bluetooth devices. Now I inherit CBCentralManagerDelegate , CBPeripheralDelegate on ViewA and search for th...
before I was testing Wechat jsapi connection to Bluetooth to send and receive data, and then found that the scanning device could not scan. later realized that the device needs to support airsync and needs to be bound in the background. binding is ve...
there is a code like this package com.pmi.reader.data.battery_info; import android.annotation.TargetApi; import android.bluetooth.BluetoothGattCharacteristic; import android.util.Log; import com.pmi.reader.data.CharacteristicData; import com.pmi.reade...
android Bluetooth development needs to connect the target device, and the encapsulation data format provided by the demand side is hexadecimal. Here is an example to find the java encapsulation method! ...
I want to send a broadcast notification to the previously bound mobile phone directly when the Bluetooth device is powered on, reminding App to connect directly to the Bluetooth device instead of App to search. I don t know how to achieve this. I don t...
the way of Bluetooth mesh ad hoc network, if the premise is that we do not know the deployment of each node in the network, can we obtain the distance of each node or the distance of two neighboring nodes by scanning the central node and broadcasting com...
the callback using BLE bluetoothgattcallback is slow, mainly because the callback is slow for about 15 seconds when the device is disconnected 1. Use connectGatt (context, false, gattCallback) to connect Bluetooth 2. When the Bluetooth device is powe...
I have made a map selection area with echart. When the configuration item roam is configured as true panning, the map click selection effect disappears. How to solve ...
The queue message disappears after rabbitmq restarts 1. When the producer sends the message, the consumer does not enable it, so the message will not be lost, but if you close rabbitmq, you will lose . What should you do at this time ?...
now most of the weex pages you see are full pages, so you want to know if you can render them as part of the native app page, and use weex in the same place with native, that is easy to change. ...
problem description novices use rn development to achieve the landing page to enter the home page function, if logged in, directly to the home page. the current process is to use AsyncStorage to cache token validation. Determine whether the token, is...
problem description : ABAA.id = B.aid B : : ...