device

问题 I am developing an android game application played using bluetooth. While searching for bluetooth device, results contain both mobile devices as well as mac pc/laptops. I would like to list only the mobile devices in my result list. Is it possible to find whether the device detected is mobile device or not? 回答1: When you have BluetoothDevice you can call getBluetoothClass. Smart phones are expected to have PHONE_SMART value, while computers should have COMPUTER_* values (for example COMPUTER

问题 I am developing an android game application played using bluetooth. While searching for bluetooth device, results contain both mobile devices as well as mac pc/laptops. I would like to list only the mobile devices in my result list. Is it possible to find whether the device detected is mobile device or not? 回答1: When you have BluetoothDevice you can call getBluetoothClass. Smart phones are expected to have PHONE_SMART value, while computers should have COMPUTER_* values (for example COMPUTER

问题 In Windows, if I open Device Manager-> right click on the device -> Properties -> Details, I get {Property, Value} pairs. I want to access them in my C++ code in Visual Studio. How do I get it? Thanks, 回答1: Try SetupDi_ functions,look here for example. HDEVINFO WinDeviceHelper::getDevInfoForClass(QString devClassName,DWORD& dwCount) { //DWORD dwGuids = 0; SetupDiClassGuidsFromNameW( qPrintableW(devClassName), 0, 0, &dwCount ); //emit sSearchStarted(dwGuids); if(dwCount) { GUID* pGuids = new

问题 I've actually got an Windows/Java Question. I've got a plugged-in device which I want to access via Java. Normally you can access an e.g. USB-Stick via the Drive letter... but this tablet is displayed by Windows as a "Portable Device"... which means, that the Path is something like "Computer\Archos 5S" and there is no Drive letter. I want to access a file on this device via Java, but I am not able to figure out the correct path to it. There is a similar question out there, but without a

问题 Can u provide me the simple code for scanning the nearby BLE devices and list it by device name and MAC ID. I tried this using sample code provided in http://developer.android.com/guide/topics/connectivity/bluetooth-le.html. But didn't work, any reference link or ideas since i am new to BLE app. 回答1: This example is based on the developers web you posted and works great for me. This is the code: DeviceScanActivity.class package com.example.android.bluetoothlegatt; import android.app.Activity;

问题 Currently I have to test app and set the different fake GPS locations on real IOS 7 devices. On Android I use 'My Fake Location'. Unfortunately, I didn't find the same app for IOS 7. Any ideas to solve my problem? 回答1: Of course ios7 prohibits creating fake locations on real device. For testing purpose there are two approches: 1) while device is connected to xcode, use the simulator and let it play a gpx track. 2) for real world testing, not connected to simu, one possibility is that your app

问题 So all I need is simple - a list of currently avaliable video capture devices (web cameras). I need it in simple C++ Qt console app. By list I mean something like such console output: 1) Asus Web Camera 2) Sony Web Camera So my question is how to cout such list using Qt C++? (if it is possible I'd love to see how to do it in pure Qt - no extra libs...) also from this series: How to get a list of video capture devices on linux? and special details on getting cameras NAMES with correct, tested

问题 How do I allocate and transfer(to and from Host) 2D arrays in device memory in Cuda? 回答1: I found a solution to this problem. I didn't have to flatten the array. The inbuilt cudaMallocPitch() function did the job. And I could transfer the array to and from device using cudaMemcpy2D() function. For example cudaMallocPitch((void**) &array, &pitch, a*sizeof(float), b); This creates a 2D array of size a*b with the pitch as passed in as parameter. The following code creates a 2D array and loops

问题 This question already has answers here : How do I disable a system device programmatically? (6 answers) Closed 2 years ago . Is there any way to disable a system device from C#.NET. Basically emulating when you go to Device Manager and disable a device that way? I am assuming there is a WinAPI function that I can invoke, but I don't know which one it is? The reason I need to do this is that I need to disable and straight after enable the device again. I need to work in Windows XP and Vista

问题 I'm a WinForms developer and I already knew how to monitor the USB's that connects or disconnects using WMI, but time ago I'd discovered the DeviceWatcher class for Modern Windows Apps, that Class has interested at first time 'cause seems like a very improved and efficient alternative to replace all those 'old' WMI codes that explains how to monitor drives over Internet, but until yesterday (thanks to this post) I haven't idea about how to use the DeviceWatcher in a WinForms project, but now