communication

问题 I need some help in how to start developing two android applications (on one phone) which communicate with each other. Application A sends a string to application B. Application B receives the string for example \"startClassOne\", app B using a method starts classOne and gets the result. The result is sent back (again as string!) to Application A. Application A writes in the console the received string from B. 回答1: Hello, i need some help in how to start developing two android applications

问题 I\'m using MPI and I want to measure the communication costs, so that I can then compare them to the \'processing\' costs, e.g., how much time do I need to scatter a list through n processes and then compare it to how much time I need to sort it. Does anyone know any tools to measure this communication costs? (the scatter for example) Is there anything to make measurements on MPI communication costs like there is, for example, PAPI to analyse code performance? Thanks in advance! 回答1: Yes,

问题 Using .Net (C#), how can you work with USB devices? How can you detect USB events (connections/disconnections) and how do you communicate with devices (read/write). Is there a native .Net solution to do this? 回答1: There is no native (e.g., System libraries) solution for this. That's the reason why SharpUSBLib exists as mentioned by moobaa. If you wish to roll your own handler for USB devices, you can check out the SerialPort class of System.IO.Ports. 回答2: I've tried using SharpUSBLib and it

问题 I know since Vista, that C# can\'t hook a UI form directly to the windows service. This was stated on the Microsoft Site. My question in this regard is: \"What is the best mode of communication from a UI to the service?\" I have heard of Remoting, Web services, and direct TCP. Are there other methods? How do they rank against the previously mentioned methods? How complicated are they to implement? My application is for intranet use, not internet. Microsoft platform will be on both sides, so

问题 Does anybody know if Selenium (WebDriver preferably) is able to communicate with and act through a browser that is already running before launching a Selenium Client? I mean if Selenium is able to comunicate with a browser without using the Selenium Server (with could be an Internet Explorer launched manually for example). 回答1: This is a pretty old feature request: Allow webdriver to attach to a running browser . So it's officially not supported. However, there is some working code which

问题 Can two applications on the same machine bind to the same port and IP address? Taking it a step further, can one app listen to requests coming from a certain IP and the other to another remote IP? I know I can have one application that starts off two threads (or forks) to have similar behavior, but can two applications that have nothing in common do the same? 回答1: The answer differs depending on what OS is being considered. In general though: For TCP, no. You can only have one application

问题 This question is mostly to solicit opinions on the best way to handle my app. I have three fragments being handled by one activity. Fragment A has one clickable element the photo and Fragment B has 4 clickable elements the buttons. The other fragment just displays details when the photo is clicked. I am using ActionBarSherlock. The forward and back buttons need to change the photo to the next or previous poses, respectively. I could keep the photo and the buttons in the same fragment, but