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• Android 1.6: onActivityResult is not called

  - by Seb

  Hi, I have a problem with the method "onActivityResult". I create a new Activity from my main activity: Intent intent = new Intent(this, NewActivity.class); startActivityForResult(intent, 0); The new Activity is ended like this: Intent resultIntent = new Intent(); resultIntent.putExtra("vid", hmvenues.get(venues[currentPosition])); resultIntent.putExtra("name", venues[currentPosition]); setResult(RESULT_OK, resultIntent); finish(); But the Method onActivityResult seem to be not called @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { Log.d(this.getClass().getName(),"onActivityResult"); ... } Does anyone have an idea, what I did wrong? Thanks!! Seb

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• Get the image file path

  - by Googler

  HI, I am trying to retrive the filname of the image file from a file path in my code. My filepath: c:\mydocuments\pictures\image.jpg which method can i use in c# to get he filename of the above mentioned path. Like String file = image.jpg I have used the system.drawing to get he path, but it returns null. my code: string file = System.drawing.image.fromfile(filepath,true); Is this the right way to get the image file name or is there any other inbuilt method in c#. Pls help me on this?

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• How to inline compressed CSS in Rails with assets pipeline

  - by haimg

  I'm trying to inline CSS into my layout. I'm currently using = Rails.application.assets.find_asset('embedded.css').body.html_safe However, the CSS returned is not compressed. I verified what .digest_path asset file exists, and is properly compressed. I can, of course, write a helper that will check if current on-disk compressed asset file exists for a given asset, and use it. However, I think find_asset actually compiles a CSS asset each time it is called -- not good in production. I hope a cleaner solution exists for this issue.

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• Spring + Hibernate session management

  - by toc777

  I have been reading about using Spring with Hibernate and I am really confused about session management. Hopefully someone can clear a few things up for me, First of all I have no idea how sessions are managed when using HibernateTemplate. Is a session opened and closed when you call a method Eg Save() on the template? When you use the find() method, are detached objects returned? I have read the Spring section on transactions but it mostly talks about handling exceptions. I was hoping to find some way of binding a hibernate session to a Spring transaction so that I can commit changes to hibernate objects when the transaction finishes. Is there a way to achieve this?

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• Why does a delegate with no parameters compile?

  - by Ryan

  I'm confused why this compiles: private delegate int MyDelegate(int p1, int p2); private void testDelegate() { MyDelegate imp = delegate { return 1; }; } MyDelegate should be a pointer to a method that takes two int parameters and returns another int, right? Why am I allowed to assign a method that takes no parameters? Interestingly, these doesn't compile (it complains about the signature mismatches, as I'd expect) private void testDelegate() { // Missing param MyDelegate imp = delegate(int p1) { return 1; }; // Wrong return type MyDelegate imp2 = delegate(int p1, int p2) { return "String"; }; } Thanks for any help! Ryan

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• I can't change a value, for a web service using an axiom client!

  - by adrian7

  Hi.I just started learning about web serices. I succesfuly installed Tomcat, and deployed axis2 on it. I followed the tutorial from here http://ws.apache.org/axis2/1_1_1/quickstartguide.html . I made the StockQuoteService web service, moved the .aar file in the WEB-INF/services folder and tested it - it worked all fine. Then I made a client for the servce. I took the source code of the file AXIOMClient.java from the dir described here http://ws.apache.org/axis2/1_1_1/quickstartguide.html#clientaxiom , imported the classes in Eclipse Java IDE and runned it. I tested and the update method works from the browser when calling http://localhost:8080/axis2/services/StockQuoteService/update?symbol=WSO&price=144 But from my java client update method is not working at all, when calling getPrice I always receive 42.00. What am I doing wrong? or, how can I trace what is happening?

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• LInq to SQL - Partial Class - C#

  - by Mark Comix

  Hi, I have a system with 2 different projects, one is called LINQ_Extensions and the other is ORM_Linq. On ORM_Linq i have the LINQ diagram with the SQL tables "converted" in clases. One of the Class is called "Tipos_Pago" In the other project i have another class (partial class) "Tipos_Pago". I want to use the method OnValidate to validate the properties include in the class "Tipos_Pago", so i create this partial class. In the 2 projects i put the same NameSpace "ORM_Linq"(I changed the NameSpace of the project "LINQ_Extensions" to have the same of the project "ORM_Linq") After those chages, Visual Studio give me this error: Error 1 No defining declaration found for implementing declaration of partial method 'ORM_Linq.Tipos_Pago.OnValidate(System.Data.Linq.ChangeAction)' C..\Tipos_Pago.cs 13 22 Extensiones_Linq I don't have any Idea of what happend, can someone help me? Thanks, sorry for my poor english This is the code in the partial class: namespace ORM_Linq { public partial class Tipos_Pago { partial void OnValidate(System.Data.Linq.ChangeAction action) { //Valid code } } }

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• unrecognized selector sent to instance

  - by iamsmug

  My app works fine in the simulator but when I run it on my phone I get this error: 2010-04-05 21:32:45.119 Top Banana[119:207] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[MethodViewController setReferringObject:]: unrecognized selector sent to instance 0x16e930' It happens here: -(void)method { [UIView beginAnimations:@"View Flip" context:nil]; [UIView setAnimationDuration:0.50]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationTransition: UIViewAnimationTransitionFlipFromRight forView:self.navigationController.view cache:NO]; MethodViewController *methodViewController = [[MethodViewController alloc] initWithNibName:@"MethodViewController" bundle:0]; NSManagedObject *selectedObject = self.referringObject; methodViewController.referringObject = selectedObject; [self.navigationController pushViewController:methodViewController animated:NO]; methodViewController.title = @"Method"; [UIView commitAnimations]; [MethodViewController release]; } It crashes on this line: methodViewController.referringObject = selectedObject; Not sure how to resolve this as it works in the simulator, I'm sure it is fairly basic to fix, any help will be appreciated.

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• Why wouldn't I be able to establish a trust relationship for a SSL/TLS channel?

  - by Abe Miessler

  I have a piece of .NET code that is erroring out when it makes a call to HTTPWebRequest.GetRequestStream. Here is the error message: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. I've read a few things that suggest that I might need a certificate on the machine running the code, but i'm not sure if that's true or how to do it. If I need to get a certificate, how do I do it? Code: var request = (HttpWebRequest)HttpWebRequest.Create(requestUrl); //my url request.Method = StringUtilities.ConvertToString(httpMethod); // Set the http method GET, POST, etc. if (postData != null) { request.ContentLength = postData.Length; request.ContentType = contentType; using (var dataStream = request.GetRequestStream()) { dataStream.Write(postData, 0, postData.Length); } }

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• MVC Model Binding to a collection where collection does not begin with a 0 index

  - by FloatLeft

  I'm trying to perform remote validation on a property of an item within a collection. The validation works OK on the first item of the collection. The http request to the validation method looks like: /Validation/IsImeiAvailable?ImeiGadgets[0].ImeiNumber=123456789012345 However on the 2nd item where the url looks like below, the validation doesn't work /Validation/IsImeiAvailable?ImeiGadgets[1].ImeiNumber=123456789012345 Now I'm pretty sure the reason for this, is that binding wont work on a collection that doesn't begin with a zero index. My validation method has a signature as below: public JsonResult IsImeiAvailable([Bind(Prefix = "ImeiGadgets")] Models.ViewModels.ImeiGadget[] imeiGadget) Because I'm passing an item within a collection I have to bind like this yet what I'm really passing is just a single value. Is there anyway I can deal with this other than just binding it as a plain old query string. Thanks Edit: This is the quick fix to get the Imei variable but I'd rather use the model binding: string imeiNumber = Request.Url.AbsoluteUri.Substring(Request.Url.AbsoluteUri.IndexOf("=")+1);

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• MySQL Throws NullReferenceException in Finalize... How are you coping with this?

  - by Cyril Gupta

  I am using MySQL with the .Net connector on 64 bit Windows. For some reason Mysql is throwing a NullReferenceException in Finalize. This is the problem here and it seems that its due to a bug described here. This bug was reported in 6.22, but I am getting the issue with 6.23 too so apparently it is not fixed. I am using MySQL both with the helper classes, and by instantiating the connection and the Mysqlcommand object. Does anybody have any idea what part of my code do I need to change to fix this issue? Cause even though this is a bug in Mysql this is not universal because I am not getting the problem in my other projects. MySQL bug report has no details on how to reproduce it either. Any suggestions?

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• How to link Cocoa static library to C command line target?

  - by Devara Gudda

  I have static library target, which uses Foundation classes(NSArray,etc) . I want to use this static library in Command line tool target. The command line tool contains only C files. From command line tool I want to call a method exported in static library. So I have modified header search path and linked the static library. When I compile the command line tool it is following linker errors. Undefined symbols: "_OBJC_CLASS_$_NSMutableArray", referenced from: "_objc_msgSend", referenced from: What is the method to link a static library which uses Foundation classes from a command line tool which contains C files? Regards Devara Gudda

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• binding an object to the global scope

  - by elduderino

  I have the following code: var myVar = (function (window) { myobj = {}; myobj.boo = function() { alert('hi'); }; window.myVar = myobj; })(window); myVar.boo(); Why don't I get back the alert when I call myVar.boo() ? I've created an anonymous self-executing function and fed in the window object. Inside that I have another object with a method assigned to it. I then assign the global myVar variable to this obj. This should provide an alias to the my myobj object. However when I call the function I get an Cannot call method 'boo' of undefined error

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• Interface name as a Type

  - by user1889148

  I am trying to understand interfaces in Java and have this task to do which I am a stack with. It must be something easy, but I don't seem to see the solution. Interface contains a few methods, one of them should return true if all elements of this set are also in the set. I.e. public interface ISet{ //some methods boolean isSubsetOf(ISet x); } Then the class: public class myClass implements ISet{ ArrayList<Integer> mySet; public myClass{ mySet = new ArrayList<Integer>(); } //some methods public boolean isSubsetOf(ISet x){ //method body } } What do I need to write in method body? How do I check that the instance of myClass is a subset of ISet collection? I was trying to cast, but it gives an error: ArrayList<Integer> param = (ArrayList<Integer>)x; return param.containsAll(mySet);

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• ASP.NET MVC Programming

  - by AlbertRosa

  So here's the deal I'm working on a project that I had originally focused on Zend Framework, But now I want to get into ASP.NET MVC and boy lets just say it's good and a great start though i'm still at the beginning stage of it. But I am having issues with passing Data From My Controller to the Master / Layout Page. Now in Zend I am able to determine which controller and which action I am in through a helper I created. Now I want to implement the same functionality in this ASP.NET MVC application. So my Master Layout Page knows which Controller I am in and hence highilighting the navigation for it. I am using a straight custom html li a structure navigation. Any help on this specific topic would be greatly appreciated.

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• C# COM+ component isn't getting the constructor string

  - by Kyle W

  I've created a COM+ component in C# with a strong name, COM Visible, ProgId, etc... I've then registered the assembly with regasm, and imported it into the COM+ Applications in Component Services. It runs just fine, and loads up the DLL, except that the constructor string that is passed in is always empty. The method signature is protected override void Construct(string constructString), and it is being called before the method on the actual component. In the component details in COM+ Applications, the constructor string is checked and a value is entered. Any help is appreciated.

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• Combinatoric 'N choose R' in java math?

  - by Aly

  Is there a built in method in a java library that can compute 'N choose R' for any N, R?

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• Calling this[int index] via reflection

  - by tkutter

  I try to implement a reflection-based late-bound library to Microsoft Office. The properties and methods of the Offce COM objects are called the following way: Type type = Type.GetTypeFromProgID("Word.Application"); object comObject = Activator.CreateInstance(type); type.InvokeMember(<METHOD NAME>, <BINDING FLAGS>, null, comObject, new object[] { <PARAMS>}); InvokeMember is the only possible way because Type.GetMethod / GetProperty works improperly with the COM objects. Methods and properties can be called using InvokeMember but now I have to solve the following problem: Method in the office-interop wrapper: Excel.Workbooks wb = excel.Workbooks; Excel.Workbook firstWb = wb[0]; respectively foreach(Excel.Workbook w in excel.Workbooks) // doSmth. How can I call the this[int index] operator of Excel.Workbooks via reflection?

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• Using the JNotify library, how can you tell if a deleted file was a file or a directory?

  - by Moeri

  For those unfamiliar with JNotify, this is a library which provides an easy way to monitor events in a directory. For instance, when a file gets deleted in the selected folder, the method "fileDeleted" gets called, along with a few parameters. Here's an example of the fileDeleted method: public void fileDeleted(int wd, String rootPath, String name) { print("deleted " + rootPath + " : " + name); } Now, I would like to know if the deleted file was a file or directory. My usual approach is to create a new File object with the given path, and use the methods isFile() and isDirectory() However, since this file is already deleted, these methods always return false. So here's my concrete question: I have the path to a deleted file or directory, how can I tell wether it was a file or a directory? Is there a workaround to this? What's the best practice to do here? Thank you in advance.

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• How do I avoid boxing/unboxing when extending System.Object?

  - by Robert H.

  I'm working on an extension method that's only applicable to reference types. I think, however, it's currently boxing and unboxing the the value. How can I avoid this? namespace System { public static class SystemExtensions { public static TResult GetOrDefaultIfNull<T, TResult>(this T obj, Func<T, TResult> getValue, TResult defaultValue) { if (obj == null) return defaultValue; return getValue(obj); } } } Example usage: public class Foo { public int Bar { get; set; } } In some method: Foo aFooObject = new Foo { Bar = 1 }; Foo nullReference = null; Console.WriteLine(aFooObject.GetOrDefaultIfNull((o) => o.Bar, 0)); // results: 1 Console.WriteLine(nullReference.GetOrDefaultIfNull((o) => o.Bar, 0)); // results: 0

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• MVC Routes - How to get a URL?

  - by Seattle Leonard

  In my current project we have a notification system. When an oject is added to another objects collection, an email is sent to those who are subscibed to the parent object. This happens on the object layer and not in the View or Controller. Here's the problem: Although we can say who created what with what information in the email, we cannot embed links to those objects in the email because in the object layer there is no access to a UrlHelper. To construct a UrlHelper you need a RequestContext, which again does not exist on the object layer. Question: I want to make a helper class to create the url's for me. How can I create an object that will generate these urls without a request context? Is it possible?

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• Using external javascript files with asp.net MVC

  - by twal

  I have some javascript inwhich I am using such helpers as var url = <%=ResolveUrl("~/controller/action") %> When the javascript is embeded in the .aspx page using the <script> tag everything works fine When I move it out to an external file those scripts that have the helper methods do not work. Other scripts do just the ones with the var url = <%=ResolveUrl("~/controller/action") %> do not. Are these not possible to use in external javascript files?? I would like to get all of my javascript out of the aspx files if I can. thanks!

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• java statistics collection for performance evaluation

  - by user384706

  What is the most efficient way to collect and report performance statistic analysis from an application? If I have an application that uses a series of network apis, and I want to report statistics at runtime, e.g. Method doA() was called 3 times and consumed on avg 500ms Method doB() was called 5 times and consumed on avg 1200ms etc Then, I thought of using a well defined data structure (of collection) that each thread updates per remote call, and this can be used for the report. But I think that it will make the performance worse, for the time spend for statistics collection. Am I correct? How would I procceed if I used a background thread for this, and the other threads that did the remote calls were unaware of this collection gathering? Thanks

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• Unit testing class in a web service in .net

  - by Dan Bailiff

  After some digging here, I took the advice in this thread: http://stackoverflow.com/questions/371961/how-to-unit-test-c-web-service-with-visual-studio-2008 I've created a separate class and my web service class is just a wrapper for that one. The problem is that when I try to create a unit test project in VS2008, it insists on creating a unit test that acts like I'm testing the web service calls instead of the class I specified. I can't get to the class I'm trying to test. I have a web service "subscription_api.asmx". The code behind is "subscription_api.cs" which contains the web method wrapper calls to the real code at "subscription.cs". I would expect to be able to do the following: [TestMethod()] public void GetSystemStatusTest() { subscription sub = new subscription(); XmlNode node = sub.GetSystemStatusTest(); Assert.IsNotNull(node); } But instead I get this mess which is autogenerated from VS'08: /// <summary> ///A test for GetSystemStatus ///</summary> // TODO: Ensure that the UrlToTest attribute specifies a URL to an ASP.NET page (for example, // http://.../Default.aspx). This is necessary for the unit test to be executed on the web server, // whether you are testing a page, web service, or a WCF service. [TestMethod()] [HostType("ASP.NET")] [AspNetDevelopmentServerHost("C:\\CVSROOT\\rnr\\pro\\product\\wms\\ss\\subscription_api", "/subscription_api")] [UrlToTest("http://localhost/subscription_api")] public void GetSystemStatusTest() { subscription_Accessor target = new subscription_Accessor(); // TODO: Initialize to an appropriate value XmlNode expected = null; // TODO: Initialize to an appropriate value XmlNode actual; actual = target.GetSystemStatus(); Assert.AreEqual(expected, actual); Assert.Inconclusive("Verify the correctness of this test method."); } Additionally, there is a "subscription_api.accessor" in the Test References folder. When I try this: [TestMethod()] public void GetSystemStatusTest2() { subscription_Accessor sub = new subscription_Accessor(); XmlNode node = sub.GetSystemStatus(); Assert.IsNotNull(node); } I get an error: Test method subscription_api.Test.subscriptionTest.GetSystemStatusTest2 threw exception: System.TypeInitializationException: The type initializer for 'subscription_Accessor' threw an exception. ---> System.ArgumentNullException: Value cannot be null. I'm really new to unit testing and feel lost. How can I create a unit test just for my subscription class in "subscription.cs" without testing the web service? Am I limited to testing within the same project (I hope not)? Do I have to put the target class in its own project outside of the web service project?

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• Managing Data Prefetching and Dependencies with .NET Typed Datasets

  - by Derek Morrison

  I'm using .NET typed datasets on a project, and I often get into situations where I prefetch data from several tables into a dataset and then pass that dataset to several methods for processing. It seems cleaner to let each method decide exactly which data it needs and then load the data itself. However, several of the methods work with the same data, and I want the performance benefit of loading data in the beginning only once. My problem is that I don't know of a good way or pattern to use for managing dependencies (I want to be sure I load all the data that I'm going to need for each class/method that will use the dataset). Currently, I just end up looking through the code for the various classes that will use the dataset to make sure I'm loading everything appropriately. What are good approaches or patterns to use in this situation? Am I doing something fundamentally wrong? Although I'm using typed datasets, this seems like it would be a common situation where prefetching data is used. Thanks!

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