device

问题 I am trying to develop a program in Mac OS and Linux which lists the files and folders in USB drive. I need to get the some events when USB device is connected and removed. I know that in Mac OS X I can use IOKit. But I do n't know how to get the mount point where the device is mounted. Can I get it using IOkit? Is there any cross platform solution for Linux and Mac? 回答1: No, there isn't. Under Linux you may use HAL or DeviceKit-disks D-Bus interfaces. Note those are optional components and

问题 When previewing a layout, such as activity_main.xml on the design view, how do I remove the frame of the phone on my previews? I know this question may have been answered before, but I can't find the solution anywhere. I want to remove the black border frame of the phone on my layout preview. 回答1: Click that setting button then uncheck the include Device Frame. Update: For Android studio 2.2 See this thread. 来源： https://stackoverflow.com/questions/38759082/android-studio-how-do-i-remove-the

问题 I have an app designed for iPhone that makes use of the UIImagePickerController. The app run in landscape only up until the image picker comes into view in its default portrait. Problem 1: On the iPhone when I rotate the device to portrait to view the image library the image picker view seems to do a flip as if rotating from landscape to portrait? Problem 2: I get the dreaded warning Using two-stage rotation animation. To use the smoother single-stage animation, this application must remove

问题 I want to get the currently subscribed device ID ? how i can get it on the client side or on the server side? I know the subscription table, but i donn't want to get from it. Secondly, if one user has already subscribed two devices and now he/she is subscribing third device, i want to capture the third (current) device ID. Later, I have to save that third device Id in my another table. If there is no way to identify the currently subscribed device , then if i go to subscription table, then

问题 I have accidentally killed one of my WP projects in VS2013. I receovered the source code from the backup, but now, if I try to recompile it and deploy to my device for further debugging, all my app data in the app IsolatedStodage area will be wiped (see this post). The problem is that I have gathered some important data in my app, and need to save them for later use with newer versions of my app. Is there a way to access the file system on a WP device unlocked for development and save the

问题 is there a way to compile an apk and test it directly in an usb-attached device ? The emulator is way too slow for a fluid development. 回答1: Using eclipse, make sure the project is debuggable, software for the phone is installed on the computer. Set the phone to accept unknown recourses. First connect the phone, then start eclipse (sometimes the other way round results in the phone not being found) If you try to run the application eclipse should prompt you asking witch device to use. Click

问题 what is the 'magic' value in tty_driver struct struct tty_driver { int magic; /* magic number for this structure */ struct kref kref; /* Reference management */ struct cdev cdev; struct module *owner; const char *driver_name; .... .... I don't understand why is it called 'magic' 回答1: Magic numbers often refer to specific constants that identify a structure, file type or software. In this case, the tty_driver's magic number is apparently always defined like this: #define TTY_DRIVER_MAGIC

问题 I've just installed the android sdk with eclipse and imported a project. but when i try to run it on my phone it doesn't run "no compatible devices" error is displayed. a generic "android" device is displayed under "other devices" in manage devices and there's the error icon saying that there's no driver installed, if i try to install google usb driver it says that no compatible driver where found. it's strange because i've other 2 pcs and the phone works well. obviously usb debugging is

问题 My client would like a business application to support 'every possible device'. The application in question is essentially a web application and 'every possible device', I believe encompasses mobile phones, netbooks, ipad, other browser supporting devices, etc. The application is somewhat complex w.r.t. the data it captures and other functions it performs (reporting). If I continue to honor increasing complexity in the application, I guess there are more chances of it not working on other

问题 This question already has answers here : C++ sector aligned read (2 answers) SetFilePointer without FILE_FLAG_NO_BUFFERING (2 answers) Closed 2 years ago . First, here are a couple links i looked at... Read and write hard disk sector directly and efficiently Read specific sector on hard drive using C language on windows I'm trying to do almost the same thing. What I'm having trouble with is reading the device multiple times so I can store the read bytes from a DEVICE (USB) to writing them