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  • how to draw a NSString in drawrect of UIView?

    - by senthilmuthu
    hi, the Newline character is not working in draw rect of UIView? can anyone help? - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); UIFont * f = [UIFont systemFontOfSize:20]; [[UIColor darkGrayColor] set]; CGRect b = [self bounds]; NSString * text = @"hi \nr u"; CGSize sz = CGSizeMake(150,200); CGContextScaleCTM(context, b.size.width/sz.width, b.size.height/sz.height); [text drawAtPoint:CGPointMake(0,0) withFont:f]; }

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  • Best practice to calculate the average speed from GPS coordinates

    - by Sebi
    i have here a device which can give me gps coordinates. the time intervall i can define. i want to use it to calculate the average speed during driving or travelling by car. actually i used a orthodrome formula to calculate the distance between two points and then divided it by the given time intervall. by the implemenation i followed this term (http://de.wikipedia.org/wiki/Orthodrome#Genauere_Formel_zur_Abstandsberechnung_auf_der_Erde). Unfortunately i could only find a german link, but i think the formula should be understandable in any language ;) Unfortunately, using this formula and a time intverall of 1 seconds gives very unprecises results. the speed while walking is between 1 km/h and 20km/h. So i wonder if there is a general reference how to implement distance calculation between two gps coordinates (i found something similar on SO) and particulary, which is the best time intervall to update the GPS coordiantes.

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  • App.config connection string Protection error

    - by MikeScott8
    I am running into an issue I had before; can't find my reference on how to solve it. Here is the issue. We encrypt the connection strings section in the app.config for our client application using code below: config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None) If config.ConnectionStrings.SectionInformation.IsProtected = False Then config.ConnectionStrings.SectionInformation.ProtectSection(Nothing) ' We must save the changes to the configuration file.' config.Save(ConfigurationSaveMode.Modified, True) End If The issue is we had a salesperson leave. The old laptop is going to a new salesperson and under the new user's login, when it tries to to do this we get an error. The error is: Unhandled Exception: System.Configuration.ConfigurationErrorsException: An error occurred executing the configuration section handler for connectionStrings. ---> System.Configuration.ConfigurationErrorsException: Failed to encrypt the section 'connectionStrings' using provider 'RsaProtectedConfigurationProvider'. Error message from the provider: Object already exists. ---> System.Security.Cryptography.CryptographicException: Object already exists

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  • UITableView backgroundColor always gray on iPad

    - by rjobidon
    Hi, When I set the backgroundColor for my UITableView it works fine on iPhone (device and simulator) but NOT on the iPad simulator. Instead I get a light gray background for any color I set including groupTableViewBackgroundColor. Steps to reproduce: Create a new navigation-based project. Open RootViewController.xib and set the table view style to "Grouped". Add this responder to the RootViewController:- (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor blackColor]; } Select Simulator SDK 3.2, build and run. You will get a black background (device and simulator). Select your target in the project tree. Click on Project : Upgrade Current Target for iPad. Build and run. You will get a light gray background. Revert the table view style to Plain and you will get a black background. Thanks for your help!

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  • Nullable One To One Relationships with Integer Keys in LINQ-to-SQL

    - by Craig Walker
    I have two objects (Foo and Bar) that have a one-to-zero-or-one relationship between them. So, Foo has a nullable foreign key reference to Bar.ID and a (nullbusted) unique index to enforce the "1" side. Bar.ID is an int, and so Foo.BarID is a nullable int. The problem occurs in the LINQ-to-SQL DBML mapping of .NET types to SQL datatypes. Since int is not a nullable type in .NET, it gets wrapped in a Nullable<int>. However, this is not the same type as int, and so Visual Studio gives me this error message when I try to create the OneToOne Association between them: Cannot create an association "Bar_Foo". Properties do not have matching types: "ID", "BarID". Is there a way around this?

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  • WPF DataGrid : CanContentScroll property causing odd behavior

    - by Sonic Soul
    i have a solution where i generate a DataGrid (or multiple instances) based on user criteria.. each grid keeps receiving data as it comes in via ObservableCollection the problem i had, was that the scroll acted weird. It was choppy, and scrollbar would resize it self while scrolling. than i found.. CanContentScroll property! It completely fixes the weird scrolling behavior bringing me temporary bliss and happiness. however, it causes 2 unfortunate side effects. whenever i re-create grid instances and bind them to my observable collection, it freezes my entire window for 5 seconds. when my grid grows to a big size, this delay can last for 30 seconds. when i call TradeGrid.ScrollIntoView(TradeGrid.Items(TradeGrid.Items.Count - 1)) to scroll to the bottom, it jumps to bottom and than back to the top. is there another way to achieve smooth scrolling perhaps?

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  • Problems with video playback in iPad.

    - by Leg10n
    I'm trying to implement a MPMoviePlayerView but I can't play the video files, I don't have a device yet to try it on, now I'm testing with simulator, I don't know if this is the cause. So far I've been able to present the view and it shows the first frame of the video, but if I click play, it doesn't play I can move the progress bar and it shows the images, but there's no movement, it stays still. Has anyone experienced something like this? The code of my UIViewController goes like this: NSURL *movieURL=[NSURL fileURLWithPath:@"video.mp4"]; MPMoviePlayerViewController *playerView=[[MPMoviePlayerViewController alloc] initWithContentURL:movieURL]; [self presentMoviePlayerViewControllerAnimated:playerView]; As I said, it shows up, I can move the progress bar back and forth, I see a still image, but no movement. Am I missing something here? or is it the simulator? Thank you

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  • Configuring ASMX Web Service End Points - web.config

    - by tyndall
    I have set up references to 2 web services in a separate assembly TestProj.Core. I reference this Project in a Web Application Project called TestProj.Web. When I setup the references in TestProj.Core the wizard gave me an app.config and through an application settings section into it. How do I get these settings to my web app? Copy and paste these into web.config? "Always Copy" the app.config out to the bin directory? Any good articles on mutiple configs?

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  • AJAX.dll is throwing error?

    - by Ramesh
    Hi all, I am using Ajax.dll in my web application.I need to refresh a page for maintaining a session more than one hour, So I created a ajax method that will be called for every 15 mins. Suddenly it throws an error System.NullReferenceException: Object reference not set to an instance of an object. at Ajax.AjaxRequestProcessor.Run() at Ajax.AjaxHandler.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) I thought the error might be in Ajax dll. Can anyone please help me to get rid of the issue please.

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  • NInject and thread-safety

    - by cbp
    I am having problems with the following class in a multi-threaded environment: public class Foo { [Inject] public IBar InjectedBar { get; set; } public bool NonInjectedProp { get; set; } public void DoSomething() { /* The following line is causing a null-reference exception */ InjectedBar.DoSomething(); } public Foo(bool nonInjectedProp) { /* This line should inject the InjectedBar property */ KernelContainer.Inject(this); NonInjectedProp = nonInjectedProp; } } This is a legacy class which is why I am using property rather than constructor injection. Sometime when the DoSomething() is called the InjectedBar property is null. In a single-threaded application, everything runs fine. How can this be occuring and how can I prevent it?

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  • Google Reader API HTTP Response parsing (Objective C)

    - by JustinXXVII
    Using the API, trying to get items in a specific feed returns this: {“direction”:”ltr”,”id”:”feed/http://arstechnica.com/index.rssx”,”title”:”Ars Technica”,”description”:”The Art of Technology”,”self”:[{"href":"http://www.google.com/reader/api/0/stream/contents/feed/http://arstechnica.com/index.rssx?ot\u003d1273193172856169\u0026r\u003dn\u0026xt\u003duser/-/state/com.google/read\u0026n\u003d4\u0026ck\u003d1273193873\u0026client\u003diPadReader"}],”alternate”:[{"href":"http://arstechnica.com/index.php","type":"text/html"}],”updated”:1273193873,”items”:[]} They look like key/value pairs but it’s plain text with UTF8 String encoding and won’t encode into a dictionary. I’m using Objective-C and I’m not sure where to go from here. So far I’ve been able to parse the XML response for unread items, but parsing the plain-text doesn’t look feasible. What is your practice?

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  • Parsing ISO-8859-1 w/ NSXmlParser

    - by Travis
    I am usin the nsxmlparser and am wondering how I can parse ISO-8859-1 correctly into an NSString. Currently, I am getting results w/ Â for two-byte characters. The XML I'm using (not created by me) starts with <?xml version="1.0" encoding="ISO-8859-1"?> Here are the basic calls I'm using (omitted the NSThread calls). NSString *xmlFilePath = [[NSBundle mainBundle] pathForResource:sampleFileName ofType:@"xml"]; NSString *xmlFileContents = [NSString stringWithContentsOfFile:xmlFilePath encoding:NSUTF8StringEncoding error:nil]; NSData *data = [xmlFileContents dataUsingEncoding:NSUTF8StringEncoding]; NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data]; [parser setDelegate:self]; [parser parse];

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  • ruby super keyword

    - by ash34
    Hi, From what I understand, 'super' keyword invokes a method with the same name as the current method in the superclass of the current class. Below in the autoload method, there is a call to 'super'. I would like to know in which superclass I would find a method with the same name or what does the call to 'super' do module ActiveSupport module Autoload ... def autoload(const_name, path = @@at_path) full = [self.name, @@under_path, const_name.to_s, path].compact.join("::") location = path || Inflector.underscore(full) if @@eager_autoload @@autoloads[const_name] = location end super const_name, location end .... end end module ActiveRecord extend ActiveSupport::Autoload ... autoload :TestCase autoload :TestFixtures, 'active_record/fixtures' end This code is from the rails master branch. Thanks much.

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  • football manager facebook application

    - by jeansymolanza
    hey guys i'm about to begin a football manager inspired facebook application in php/mysql and had a couple of questions: 1) where would be the best place to host the database? any services offered within great britain would be excellent! 2) does anyone have any ideas on how i could use player statistics as part of the in-game match engine? how would php accomodate this? i would like to make the matches as realistic as possible? 3) lastly i wanted to know whether php/mysql would be the best language to code this game in. i am quite confident within this language and can pick up new skills relatively quickly. but i am worried once again (in reference to number 2) about how i would simulate matches using the data from php. i'd appreciate any pointers. thanks for the help guys!

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  • WPF: How do I debug binding errors?

    - by Jonathan Allen
    I'm getting this in my output Window: System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='System.Windows.Controls.ItemsControl', AncestorLevel='1''. BindingExpression:Path=VerticalContentAlignment; DataItem=null; target element is 'ListBoxItem' (Name=''); target property is 'VerticalContentAlignment' (type 'VerticalAlignment') This is my XAML, which when run looks correct <GroupBox Header="Grant/Deny Report"> <ListBox ItemsSource="{Binding Converter={StaticResource MethodBinder}, ConverterParameter=GrantDeny, Mode=OneWay}"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <Label Content="{Binding Entity}"/> <Label Content="{Binding HasPermission}"/> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> </GroupBox>

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  • Websocket TLS Node Server and wss://

    - by CNelson
    I'm looking to start using javascript on the server, most likely with node.js, as well as use websockets to communicate with clients. However, there doesn't seem to be a lot of information about encrypted websocket communication using TLS and the wss:// handler. In fact the only server that I've seen explicitly support wss:// is Kaazing. This TODO is the only reference I've been able to find in the various node implementations. Am I missing something or are the websocket js servers not ready for encrypted communication yet? Another option could be using something like lighttpd or apache to proxy to a node listener, has anyone had success there?

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  • ClickOnce deployment error due to Microsoft.VisualStudio.Shell.Interop.9.0 Version9.0.0.0 missing fr

    - by user357695
    Hello all, I am developing a C# application in VS 2010 that is to be deployed via ClickOnce. However when I try to deploy the application on a client machine I get the following error: Unable to install or run the application. The application requires the assembly Microsoft.VisualStudio.Shell.Interop.9.0 Version 9.0.0.0 to be installed in the Global Assembly Cache (GAC) first. I have tried to include the missing assembly into the application files under Project Properties-Publish tab, but the error remains the same. Next I tried to add Microsoft.VisualStudio.Shell.Interop.9.0 to the project's references, but I cannot find it in the reference list. Does anyone have any tips or solutions to this problem. Thanks in advance.

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  • How to Integrate ILMerge into C#/VB.NET (MSBuild) Projects to Merge Assemblies?

    - by AMissico
    I want to merge one .NET DLL assembly and one C# Class Library project referenced by a VB.NET Console Application project into one command-line console executable. I can do this with ILMerge from the command-line, but I want to integrate this merging of reference assemblies and projects into the Visual Studio project. From my reading, I understand that I can do this through a MSBuild Task or a Target and just add it to a C#/VB.NET Project file, but I can find no specific example since MSBuild is large topic. How do I integrate ILMerge into a Visual Studio (C#/VB.NET) project, which are just MSBuild projects, to merge all referenced assemblies (copy-local=true) into one assembly? How does this tie into a possible ILMerge.Targets file?

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  • UIButton of type UIButtonTypeCustom will not display Title (iPhone)

    - by RickiG
    Hi I must have overlooked something completely obvious?? but my button displays its image and size correctly, but I simply can't get the Title to show up. I did a really simple test, the Title does not even show up when I do this: CGRect frameBtn = CGRectMake(160.0f, 150.0f, 144.0f, 42.0f); UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; [button setImage:[UIImage imageNamed:@"left_halfscreen_button.png"] forState:UIControlStateNormal]; [button setTitle:@"Hello" forState:UIControlStateNormal]; [button setFrame:frameBtn]; NSLog(@"Title:%@", [button currentTitle]); //prints "Title:Hello [self addSubview:button]; I have a factory class that generates custom buttons for me and I thought I messed some detail up there, so I moved the above code directly into my UIView, the title is still blank. Is this a bug or am I simply missing something right in front of my eyes. Thank you for the extra set of eyes:)

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  • WCF <operation>Async methods not generated in proxy interface

    - by Charlie
    I want to use the Asnyc methods rather than the Begin on my WCF service client proxy because I'm updating WPF controls and need to make sure they're being updated from the UI thread. I could use the Dispatcher class to queue items for the UI thread but that's not what I'm asking about.. I've configured the service reference to generate the asynchronous operations, but it only generates the methods in proxy's implementation, not it's interface. The interface only contains syncronous and Begin methods. Why aren't these methods generated in the interface and is there a way to do this, or do I have to create a derived interface to manually add them?

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  • Consuming SAP Web Service from ASP.Net

    - by mehmet6parmak
    Hi, Next week i am supposed to develop an asp.net application which will connect to SAP, retrieve some data, change them and send back to SAP. We decided to use web services to achieve this and now i just want to know what diffuculties may i face with? I have URL of WSDL of the Web Service, will it be enough for me to adding web reference and giving the WSDL's URL? How will i authenticate? And Will it be the same with consuming normal web services? Also i wonder is there anybody that can share a .NET dll that can be used in visual studio 2008? There are some articles relating how to create such a dll using SAP .Net Connector and visual studio 2003 but i could not find anybody sharing the resulting dll under their post. Thanks...

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  • SharePoint Web Services. Using UserPofileService.GetUserProfileByName. After SP upgrade... failing.

    - by Steve
    The below web services code has worked properly for me for over a year. We have updated our SharePoint servers, and now the below code throws an exception (at the bottom line of code) "Object reference not set to an instance of an object" UserProfileWS.UserProfileService userProfileService = new UserProfileWS.UserProfileService(); userProfileService.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials; string serviceloc = "/_vti_bin/UserProfileService.asmx"; userProfileService.Url = _webUrl + serviceloc; UserProfileWS.PropertyData[] info = userProfileService.GetUserProfileByName(null); EDIT: The service is still there. I browse http:///_vti_bin/UserProfileService.asmx, and the information for the service is still there, including the full description of the GetUserProfileByName call. EDIT2: This does appear to be due to a change in SharePoint. I loaded a previous version of my software (known to be working), and it exhibits the same erroneous behavior.

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  • jQuery getJson returning null

    - by Adam
    I'm trying to use this api that lets you reference an exact text, but the getJson does not seem to be working, it's just returning null. $.getJSON('http://api.biblia.com/v1/bible/content/KJV.json?key=MYAPIKEY=John+3:16-18&style=bibleTextOnly', function(data) { alert(data); }); I just took the key out, i've been testing it with my real api key, and it works fine when i just visit the url. is there anything else i need to do to make it work? This is what you get from the url when you have an api key in the url: {"text":"For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. For God sent not his Son into the world to condemn the world; but that the world through him might be saved. He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God."}

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  • UIGraphicsGetImageFromCurrentImageContext gives poor quality / low resolution image, how do I get be

    - by user157733
    Ok so I am taking a screen shot of a photo I took with my camera on the iPhone. I put the camera photo into UIImageView and grab a screenshot of it using this sort of code (this is from http://www.skylarcantu.com/blog/2009/10/16/saving-a-view-as-an-image/)... - (void)takeScreenshot { UIWindow *theScreen = [[UIApplication sharedApplication].windows objectAtIndex:0]; UIGraphicsBeginImageContext(theScreen.frame.size); [[theScreen layer] renderInContext:UIGraphicsGetCurrentContext()]; UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); [self doSomethingWith:screenshot]; } I have it working as I want but the image quality of the screenshot is much worse than the image I take with my camera. Is there a way to overcome this? I guess it is because this takes a screenshot which captures the resolution of the iPhone screen rather than the resolution of the camera - maybe?! Any suggestions would be great :-)

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  • Changing ActiveRecord attribute value in before_save hook

    - by fifigyuri
    I needed to fix the encoding of an ActiveRecord attribute and decided to do it in a before_save hook. And at this point I noticed an unexpected feature. When I wanted to change the value of the attribute, simple using the attribute_name=XY did not work as I expected. Instead of that I needed to use self[:attribute_name]=XY. So far did not recognise this behaviour and I used AR.attribute_name=XY. What is the reason for this? Does this behaviour relate to the hook or something else? Thanks for explanation.

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