communication

I'm beginner in Android development. I try to create kind of MusicPlayer, which uses Service for playing music. When I click buttons in MainActivity, I call startService with Intent, which includes signal for action, such as play, pause, stop, etc... But I want to send data back from service to activity. For example, when current track has stopped and begin to play the next one, MainActivity got to receive track name and author name. Or when last track in the playlist is stopped, button "Pause" on the Activity got to changed to "Play". I need to send data as map. Like "title: value", "playing:

I have few projects communicating using ChannelSink, ServerSink and ClientSink. I've upgraded the projects from .NET 2.0 to .NET 4.0. Before the upgrade everything worked fine. Now, when I try to communicate , - for a specific message - my OnReceiveMessage isn't called and throwing the following exception: System.Security.SecurityException: Request failed Server stack trace: at System.Array.InternalCreate(Void* elementType, Int32 rank, Int32* pLengths, Int32* pLowerBounds) at System.Array.CreateInstance(Type elementType, Int32 Length) at System.Runtime.Serialization.Formatters.Soap

I have a binary matrix A (only 1 and 0 ), and a vector D in Galois field (256). The vector C is calculated as: C = (A^^-1)*D where A^^-1 denotes the inverse matrix of matrix A in GF(2) , * is multiply operation. The result vector C must be in GF(256) . I tried to do it in Matlab. A= [ 1 0 0 1 1 0 0 0 0 0 0 0 0 0; 1 1 0 0 0 1 0 0 0 0 0 0 0 0; 1 1 1 0 0 0 1 0 0 0 0 0 0 0; 0 1 1 1 0 0 0 1 0 0 0 0 0 0; 0 0 1 1 0 0 0 0 1 0 0 0 0 0; 1 1 0 1 1 0 0 1 0 1 0 0 0 0; 1 0 1 1 0 1 0 0 1 0 1 0 0 0; 1 1 1 0 0 0 1 1 1 0 0 1 0 0; 0 1 1 1 1 1 1 0 0 0 0 0 1 0; 0 0 0 0 1 1 1 1 1 0 0 0 0 1; 0 1 1 1 1 0 1 1 1 0 1 1

I have this piece of code which allows a user to leave comments on a list of items. I created a directive and listen to keydown in order to let the user submit a comment if keyCode == 13 . Not sure if I should include the code to post a comment within the directive. What is the best way to communicate between controllers and directives? I also check whether or not the input is empty before submitting the comment. It works but not sure this is Angular best practice? Here is my plunker . You generally don't want your directives knowing anything about your controller, so the best(Angular) way of

I was messing around with communicating inside a Google Chrome extension and was using the following guide: https://developer.chrome.com/extensions/messaging It used to work but I have encountered an error : Error in response to tabs.query: TypeError: Cannot read property 'id' of undefined I compared my code and the Google Chrome code and I can't seem to find why my code produces that error: chrome.tabs.query({active: true, currentWindow: true}, function(tabs) { chrome.tabs.sendMessage(tabs[1].id, {fen: request.needMove}, function(response) { //console.log(response.farewell); }); }); Here is

Is there anyone who can give me some thoughts on how to handle window to window communication using javascript givin that the two windows has no parent child relationship. Basically the other window is opened using window.open method. Any brilliant information is well appreciated. assuming the following: windowHandle=window.open('path/to/document'); you can interact between both windows. You have a pointer to the window-object from the document where it was opened from using the variable-name: //doSomething has to be known inside the new window windowHandle.doSomething(); and from the document