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  • Changing Endpoint URL for a Web Service Data Control

    - by vishal.s.jain(at)oracle.com
    When you move your application from Development to Production, there is more often then not, a need to change the web service endpoint URL in your ADF application. If you are using a Web Service Data Control(WSDC), you can do this in more than one ways. The following example illustrates how this can be done.At Design TimeIf the application workspace is in your control, you can quickly do this by updating the definition in DataControl.dcx file:Along with this, you will also need to change the endpoint in connections.xml. So invoke the Edit Connections dialog: Then, change the endpoint URL.At DeploymentAnother way to change is changing the endpoint at the ear level, at deployment. So when you select Deploy -> Application Server at the Application level, it will bring up a Deployment Configuration dialog, in which you can edit the WSDL URL:Also, change the Port URL:At Post DeploymentIf your need to change this post deployment, you can do it through Oracle Enterprise Manager. But for this, your application needs to be configured with a writable MDS repository. It is recommended you use a Database MDS store during deployment. So have your application configured (by having an entry in adf-config.xml) and server configured (by having a MDS store registered). Once done, you can configure the ADF Connection in EM for this application:Change the WSDL location here on 'Edit':Also, change the Port using Advance Connection Configuration:Change the Endpoint Address here:Apply Changes and you are done!

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  • Metro: Understanding Observables

    - by Stephen.Walther
    The goal of this blog entry is to describe how the Observer Pattern is implemented in the WinJS library. You learn how to create observable objects which trigger notifications automatically when their properties are changed. Observables enable you to keep your user interface and your application data in sync. For example, by taking advantage of observables, you can update your user interface automatically whenever the properties of a product change. Observables are the foundation of declarative binding in the WinJS library. The WinJS library is not the first JavaScript library to include support for observables. For example, both the KnockoutJS library and the Microsoft Ajax Library (now part of the Ajax Control Toolkit) support observables. Creating an Observable Imagine that I have created a product object like this: var product = { name: "Milk", description: "Something to drink", price: 12.33 }; Nothing very exciting about this product. It has three properties named name, description, and price. Now, imagine that I want to be notified automatically whenever any of these properties are changed. In that case, I can create an observable product from my product object like this: var observableProduct = WinJS.Binding.as(product); This line of code creates a new JavaScript object named observableProduct from the existing JavaScript object named product. This new object also has a name, description, and price property. However, unlike the properties of the original product object, the properties of the observable product object trigger notifications when the properties are changed. Each of the properties of the new observable product object has been changed into accessor properties which have both a getter and a setter. For example, the observable product price property looks something like this: price: { get: function () { return this.getProperty(“price”); } set: function (value) { this.setProperty(“price”, value); } } When you read the price property then the getProperty() method is called and when you set the price property then the setProperty() method is called. The getProperty() and setProperty() methods are methods of the observable product object. The observable product object supports the following methods and properties: · addProperty(name, value) – Adds a new property to an observable and notifies any listeners. · backingData – An object which represents the value of each property. · bind(name, action) – Enables you to execute a function when a property changes. · getProperty(name) – Returns the value of a property using the string name of the property. · notify(name, newValue, oldValue) – A private method which executes each function in the _listeners array. · removeProperty(name) – Removes a property and notifies any listeners. · setProperty(name, value) – Updates a property and notifies any listeners. · unbind(name, action) – Enables you to stop executing a function in response to a property change. · updateProperty(name, value) – Updates a property and notifies any listeners. So when you create an observable, you get a new object with the same properties as an existing object. However, when you modify the properties of an observable object, then you can notify any listeners of the observable that the value of a particular property has changed automatically. Imagine that you change the value of the price property like this: observableProduct.price = 2.99; In that case, the following sequence of events is triggered: 1. The price setter calls the setProperty(“price”, 2.99) method 2. The setProperty() method updates the value of the backingData.price property and calls the notify() method 3. The notify() method executes each function in the collection of listeners associated with the price property Creating Observable Listeners If you want to be notified when a property of an observable object is changed, then you need to register a listener. You register a listener by using the bind() method like this: (function () { "use strict"; var app = WinJS.Application; app.onactivated = function (eventObject) { if (eventObject.detail.kind === Windows.ApplicationModel.Activation.ActivationKind.launch) { // Simple product object var product = { name: "Milk", description: "Something to drink", price: 12.33 }; // Create observable product var observableProduct = WinJS.Binding.as(product); // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); // Change the price observableProduct.price = 2.99; } }; app.start(); })(); In the code above, the bind() method is used to associate the price property with a function. When the price property is changed, the function logs the new value of the price property to the Visual Studio JavaScript console. The price property is associated with the function using the following line of code: // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); Coalescing Notifications If you make multiple changes to a property – one change immediately following another – then separate notifications won’t be sent. Instead, any listeners are notified only once. The notifications are coalesced into a single notification. For example, in the following code, the product price property is updated three times. However, only one message is written to the JavaScript console. Only the last value assigned to the price property is written to the JavaScript Console window: // Simple product object var product = { name: "Milk", description: "Something to drink", price: 12.33 }; // Create observable product var observableProduct = WinJS.Binding.as(product); // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); // Change the price observableProduct.price = 3.99; observableProduct.price = 2.99; observableProduct.price = 1.99; Only the last value assigned to price, the value 1.99, appears in the console: If there is a time delay between changes to a property then changes result in different notifications. For example, the following code updates the price property every second: // Simple product object var product = { name: "Milk", description: "Something to drink", price: 12.33 }; // Create observable product var observableProduct = WinJS.Binding.as(product); // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); // Add 1 to price every second window.setInterval(function () { observableProduct.price += 1; }, 1000); In this case, separate notification messages are logged to the JavaScript Console window: If you need to prevent multiple notifications from being coalesced into one then you can take advantage of promises. I discussed WinJS promises in a previous blog entry: http://stephenwalther.com/blog/archive/2012/02/22/windows-web-applications-promises.aspx Because the updateProperty() method returns a promise, you can create different notifications for each change in a property by using the following code: // Change the price observableProduct.updateProperty("price", 3.99) .then(function () { observableProduct.updateProperty("price", 2.99) .then(function () { observableProduct.updateProperty("price", 1.99); }); }); In this case, even though the price is immediately changed from 3.99 to 2.99 to 1.99, separate notifications for each new value of the price property are sent. Bypassing Notifications Normally, if a property of an observable object has listeners and you change the property then the listeners are notified. However, there are certain situations in which you might want to bypass notification. In other words, you might need to change a property value silently without triggering any functions registered for notification. If you want to change a property without triggering notifications then you should change the property by using the backingData property. The following code illustrates how you can change the price property silently: // Simple product object var product = { name: "Milk", description: "Something to drink", price: 12.33 }; // Create observable product var observableProduct = WinJS.Binding.as(product); // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); // Change the price silently observableProduct.backingData.price = 5.99; console.log(observableProduct.price); // Writes 5.99 The price is changed to the value 5.99 by changing the value of backingData.price. Because the observableProduct.price property is not set directly, any listeners associated with the price property are not notified. When you change the value of a property by using the backingData property, the change in the property happens synchronously. However, when you change the value of an observable property directly, the change is always made asynchronously. Summary The goal of this blog entry was to describe observables. In particular, we discussed how to create observables from existing JavaScript objects and bind functions to observable properties. You also learned how notifications are coalesced (and ways to prevent this coalescing). Finally, we discussed how you can use the backingData property to update an observable property without triggering notifications. In the next blog entry, we’ll see how observables are used with declarative binding to display the values of properties in an HTML document.

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  • Screenshot Tour: Ubuntu Touch 14.04 on a Nexus 7

    - by Chris Hoffman
    Ubuntu 14.04 LTS will “form the basis of the first commercially available Ubuntu tablets,” according to Canonical. We installed Ubuntu Touch 14.04 on our own hardware to see what those tablets will be like. We don’t recommend installing this yourself, as it’s still not a polished, complete experience. We’re using “Ubuntu Touch” as shorthand here — apparently this project’s new name is “Ubuntu For Devices.” The Welcome Screen Ubuntu’s touch interface is all about edge swipes and hidden interface elements — it has a lot in common with Windows 8, actually. You’ll see the welcome screen when you boot up or unlock a Ubuntu tablet or phone. If you have new emails, text messages, or other information, it will appear on this screen along with the time and date. If you don’t, you’ll just see a message saying “No data sources available.” The Dash Swipe in from the right edge of the welcome screen to access the Dash, or home screen. This is actually very similar to the Dash on Ubuntu’s Unity desktop. This isn’t a surprise — Canonical wants the desktop and touch versions of Ubuntu to use the same code. In the future, the desktop and touch versions of Ubuntu will use the same version of Unity and Unity will adjust its interface depending on what type of device your’e using. Here you’ll find apps you have installed and apps available to install. Tap an installed app to launch it or tap an available app to view more details and install it. Tap the My apps or Available headings to view a complete list of apps you have installed or apps you can install. Tap the Search box at the top of the screen to start searching — this is how you’d search for new apps to install. As you’d expect, a touch keyboard appears when you tap in the Search field or any other text field. The launcher isn’t just for apps. Tap the Apps heading at the top of the screen and you’ll see hidden text appear — Music, Video, and Scopes. This hidden navigation is used throughout Ubuntu’s different apps and can be easy to miss at first. Swipe to the left or right to move between these screens. These screens are also similar to the different panels in Unity on the desktop. The Scopes section allows you to view different search scopes you have installed. These are used to search different sources when you start a search from the Dash. Search from the Music or Videos scopes to search for local media files on your device or media files online. For example, searching in the Music scope will show you music results from Grooveshark by default. Navigating Ubuntu Touch Swipe in from the left edge anywhere on the system to open the launcher, a bar with shortcuts to apps. This launcher is very similar to the launcher on the left of Ubuntu’s Unity desktop — that’s the whole idea, after all. Once you’ve opened an app, you can leave the app by swiping in from the left. The launcher will appear — keep moving your finger towards the right edge of teh screen. This will swipe the current app off the screen, taking you back to the Dash. Once back on the Dash, you’ll see your open apps represented as thumbnails under Recent. Tap a thumbnail here to go back to a running app. To remove an app from here, long-press it and tap the X button that appears. Swipe in from the right edge in any app to quickly switch between recent apps. Swipe in from the right edge and hold your finger down to reveal an application switcher that shows all your recent apps and lets you choose between them. Swipe down from the top of the screen to access the indicator panel. Here you can connect to Wi-Fi networks, view upcoming events, control GPS and Bluetooth hardware, adjust sound settings, see incoming messages, and more. This panel is for quick access to hardware settings and notifications, just like the indicators on Ubuntu’s Unity desktop. The Apps System settings not included in the pull-down panel are available in the System Settings app. To access it, tap My apps on the Dash and tap System Settings, search for the System Settings app, or open the launcher bar and tap the settings icon. The settings here a bit limited compared to other operating systems, but many of the important options are available here. You can add Evernote, Ubuntu One, Twitter, Facebook, and Google accounts from here. A free Ubuntu One account is mandatory for downloading and updating apps. A Google account can be used to sync contacts and calendar events. Some apps on Ubuntu are native apps, while many are web apps. For example, the Twitter, Gmail, Amazon, Facebook, and eBay apps included by default are all web apps that open each service’s mobile website as an app. Other applications, such as the Weather, Calendar, Dialer, Calculator, and Notes apps are native applications. Theoretically, both types of apps will be able to scale to different screen resolutions. Ubuntu Touch and Ubuntu desktop may one day share the same apps, which will adapt to different display sizes and input methods. Like Windows 8 apps, Ubuntu apps hide interface elements by default, providing you with a full-screen view of the content. Swipe up from the bottom of an app’s screen to view its interface elements. For example, swiping up from the bottom of the Web Browser app reveals Back, Forward, and Refresh buttons, along with an address bar and Activity button so you can view current and recent web pages. Swipe up even more from the bottom and you’ll see a button hovering in the middle of the app. Tap the button and you’ll see many more settings. This is an overflow area for application options and functions that can’t fit on the navigation bar. The Terminal app has a few surprising Easter eggs in this panel, including a “Hack into the NSA” option. Tap it and the following text will appear in the terminal: That’s not very nice, now tracing your location . . . . . . . . . . . .Trace failed You got away this time, but don’t try again. We’d expect to see such Easter eggs disappear before Ubuntu Touch actually ships on real devices. Ubuntu Touch has come a long way, but it’s still not something you want to use today. For example, it doesn’t even have a built-in email client — you’ll have to us your email service’s mobile website. Few apps are available, and many of the ones that are are just mobile websites. It’s not a polished operating system intended for normal users yet — it’s more of a preview for developers and device manufacturers. If you really want to try it yourself, you can install it on a Wi-Fi Nexus 7 (2013), Nexus 10, or Nexus 4 device. Follow Ubuntu’s installation instructions here.

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  • Flex 3.5.0; Update ComboBox display list upon dataprovider change

    - by Gabriel Poama-Neagra
    Hello, I have two related ComboBoxes ( continents, and countries ). When the continents ComboBox changes I request a XML from a certain URL. When I receive that XML i change the DataProvider for the countries ComboBox, like this: public function displayCountryArray( items:XMLList ):void { this.resellersCountryLoader.alpha = 0; this.resellersCountry.dataProvider = items; this.resellersCountry.dispatchEvent( new ListEvent( ListEvent.CHANGE ) ); } I dispatch the ListEvent.CHANGE because I use it to change another ComboBox so please ignore that (and the 1st line ). So, my problem is this: I select "ASIA" from the first continents, then the combobox DATA get's updated ( I can see that because the first ITEM is an item with the label '23 countries' ). I click the combo then I can see the countries. NOW, I select "Africa", the first item is displayed, with the ComboBox being closed, then when I click it, the countries are still the ones from Asia. Anyway, if I click an Item in the list, then the list updates correctly, and also, it has the correct info ( as I said it affects other ComboBoxes ). SO the only problem is that the display list does not get updated. In this function I tried these approaches Converting XMLList to XMLCollection and even ArrayCollection Adding this.resellersCountry.invalidateDisplayList(); Triggering events like DATA_CHANGE and UPDATE_COMPLETE I know they don't make much sense, but I got a little desperate. Please note that when I used 3.0.0 SDK this did not happen. Sorry if I'm stupid, but the flex events are killing me.

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  • What's the easiest way to change the contents of text in a string with C#?

    - by Anne
    I have HTML in a string that looks like this: <div id="control"> <a href="/xx/x">y</a> <ul> <li><a href="/C003Q/x" class="dw">x</a></li> <li><a href="/C003R/xx" class="dw">xx</a></li> <li><a href="/C003S/xxx" class="dw">xxx</a></li> </ul> </div> I would like to change this to the following: <div id="control"> <a data-href="/xx/x" ><span>y</span></a> <ul> <li><a data-href="/C003Q/x" class="dw"><span>x</span></a></li> <li><a data-href="/C003R/xx" class="dw"><span>xx</span></a></li> <li><a data-href="/C003S/xxx" class="dw"><span>xxx</span></a></li> </ul> </div> I heard about regex but I am not sure how I can use it to change something inside the address tags and to change href at the same time. Would I need to use regex twice and can I change the inside of the <a ... >...</a> using regex or is there an easier way with C#?

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  • SQL SERVER – How to Compare the Schema of Two Databases with Schema Compare

    - by Pinal Dave
    Earlier I wrote about An Efficiency Tool to Compare and Synchronize SQL Server Databases and it was very much well received. Since the blog post I have received quite a many question that just like data how we can also compare schema and synchronize it. If you think about comparing the schema manually, it is almost impossible to do so. Table Schema has been just one of the concept but if you really want the all the schema of the database (triggers, views, stored procedure and everything else) it is just impossible task. If you are developer or database administrator who works in the production environment than you know that there are so many different occasions when we have to compare schema of the database. Before deploying any changes to the production server, I personally like to make note of the every single schema change and document it so in case of any issue , I can always go back and refer my documentation. As discussed earlier it is absolutely impossible to do this task without the help of third party tools. I personally use Devart Schema Compare for this task. This is an extremely easy tool. Let us see how it works. First I have two different databases – a) AdventureWorks2012 and b) AdventureWorks2012-V1. There are total three changes between these databases. Here is the list of the same. One of the table has additional column One of the table have new index One of the stored procedure is changed Now let see how dbForge Schema Compare works in this scenario. First open dbForge Schema Compare studio. Click on New Schema Comparison. It will bring you to following screen where we have to configure the database needed to configure. I have selected AdventureWorks2012 and AdventureWorks-V1 databases. In the next screen we can verify various options but for this demonstration we will keep it as it is. We will not change anything in schema mapping screen as in our case it is not required but generically if you are comparing across schema you may need this. This is the most important screen as on this screen we select which kind of object we want to compare. You can see the options which are available to select. The screen lets you select the objects from SQL Server 2000 to SQL Server 2012. Once you click on compare in previous screen it will bring you to this screen, which will essentially display the comparative difference between two of the databases which we had selected in earlier screen. As mentioned above there are three different changes in the database and the same has been listed over here. Two of the changes belongs to the tables and one changes belong to the procedure. Let us click each of them one by one to see what is the difference between them. In very first option we can see that there is an additional column in another database which did not exist earlier. In this example we can see that AdventureWorks2012 database have an additional index. Following example is very interesting as in this case, we have changed the definition of the stored procedure and the result pan contains the same. dbForget Schema Compare very effectively identify the changes in schema and lists them neatly to developers. Here is one more screen. This software not only compares the schema but also provides the options to update or drop them as per the choice. I think this is brilliant option. Well, I have been using schema compare for quite a while and have found it very useful. Here are few of the things which dbForge Schema Compare can do for developers and DBAs. Compare and synchronize SQL Server database schemas Compare schemas of live database and SQL Server backup Generate comparison reports in Excel and HTML formats Eliminate mistakes in schema changes propagation across environments Track production database changes and customizations Automate migration of schema changes using command line interface I suggest that you try out dbForge Schema Compare and let me know what you think of this product. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQL Utility, T SQL

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  • Overview of Microsoft SQL Server 2008 Upgrade Advisor

    - by Akshay Deep Lamba
    Problem Like most organizations, we are planning to upgrade our database server from SQL Server 2005 to SQL Server 2008. I would like to know is there an easy way to know in advance what kind of issues one may encounter when upgrading to a newer version of SQL Server? One way of doing this is to use the Microsoft SQL Server 2008 Upgrade Advisor to plan for upgrades from SQL Server 2000 or SQL Server 2005. In this tip we will take a look at how one can use the SQL Server 2008 Upgrade Advisor to identify potential issues before the upgrade. Solution SQL Server 2008 Upgrade Advisor is a free tool designed by Microsoft to identify potential issues before upgrading your environment to a newer version of SQL Server. Below are prerequisites which need to be installed before installing the Microsoft SQL Server 2008 Upgrade Advisor. Prerequisites for Microsoft SQL Server 2008 Upgrade Advisor .Net Framework 2.0 or a higher version Windows Installer 4.5 or a higher version Windows Server 2003 SP 1 or a higher version, Windows Server 2008, Windows XP SP2 or a higher version, Windows Vista Download SQL Server 2008 Upgrade Advisor You can download SQL Server 2008 Upgrade Advisor from the following link. Once you have successfully installed Upgrade Advisor follow the below steps to see how you can use this tool to identify potential issues before upgrading your environment. 1. Click Start -> Programs -> Microsoft SQL Server 2008 -> SQL Server 2008 Upgrade Advisor. 2. Click Launch Upgrade Advisor Analysis Wizard as highlighted below to open the wizard. 2. On the wizard welcome screen click Next to continue. 3. In SQL Server Components screen, enter the Server Name and click the Detect button to identify components which need to be analyzed and then click Next to continue with the wizard. 4. In Connection Parameters screen choose Instance Name, Authentication and then click Next to continue with the wizard. 5. In SQL Server Parameters wizard screen select the Databases which you want to analysis, trace files if any and SQL batch files if any.  Then click Next to continue with the wizard. 6. In Reporting Services Parameters screen you can specify the Reporting Server Instance name and then click next to continue with the wizard. 7. In Analysis Services Parameters screen you can specify an Analysis Server Instance name and then click Next to continue with the wizard. 8. In Confirm Upgrade Advisor Settings screen you will be able to see a quick summary of the options which you have selected so far. Click Run to start the analysis. 9. In Upgrade Advisor Progress screen you will be able to see the progress of the analysis. Basically, the upgrade advisor runs predefined rules which will help to identify potential issues that can affect your environment once you upgrade your server from a lower version of SQL Server to SQL Server 2008. 10. In the below snippet you can see that Upgrade Advisor has completed the analysis of SQL Server, Analysis Services and Reporting Services. To see the output click the Launch Report button at the bottom of the wizard screen. 11. In View Report screen you can see a summary of issues which can affect you once you upgrade. To learn more about each issue you can expand the issue and read the detailed description as shown in the below snippet.

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  • How do I center a UIImageView within a full-screen UIScrollView?

    - by Sebastian Celis
    In my application, I would like to present the user with a full-screen photo viewer much like the one used in the Photos app. This is just for a single photo and as such should be quite simple. I just want the user to be able to view this one photo with the ability to zoom and pan. I have most of it working. And, if I do not center my UIImageView, everything behaves perfectly. However, I really want the UIImageView to be centered on the screen when the image is sufficiently zoomed out. I do not want it stuck to the top-left corner of the scroll view. Once I attempt to center this view, my vertical scrollable area appears to be greater than it should be. As such, once I zoom in a little, I am able to scroll about 100 pixels past the top of the image. What am I doing wrong? @interface MyPhotoViewController : UIViewController <UIScrollViewDelegate> { UIImage* photo; UIImageView *imageView; } - (id)initWithPhoto:(UIImage *)aPhoto; @end @implementation MyPhotoViewController - (id)initWithPhoto:(UIImage *)aPhoto { if (self = [super init]) { photo = [aPhoto retain]; // Some 3.0 SDK code here to ensure this view has a full-screen // layout. } return self; } - (void)dealloc { [photo release]; [imageView release]; [super dealloc]; } - (void)loadView { // Set the main view of this UIViewController to be a UIScrollView. UIScrollView *scrollView = [[UIScrollView alloc] init]; [self setView:scrollView]; [scrollView release]; } - (void)viewDidLoad { [super viewDidLoad]; // Initialize the scroll view. CGSize photoSize = [photo size]; UIScrollView *scrollView = (UIScrollView *)[self view]; [scrollView setDelegate:self]; [scrollView setBackgroundColor:[UIColor blackColor]]; // Create the image view. We push the origin to (0, -44) to ensure // that this view displays behind the navigation bar. imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, -44.0, photoSize.width, photoSize.height)]; [imageView setImage:photo]; [scrollView addSubview:imageView]; // Configure zooming. CGSize screenSize = [[UIScreen mainScreen] bounds].size; CGFloat widthRatio = screenSize.width / photoSize.width; CGFloat heightRatio = screenSize.height / photoSize.height; CGFloat initialZoom = (widthRatio > heightRatio) ? heightRatio : widthRatio; [scrollView setMaximumZoomScale:3.0]; [scrollView setMinimumZoomScale:initialZoom]; [scrollView setZoomScale:initialZoom]; [scrollView setBouncesZoom:YES]; [scrollView setContentSize:CGSizeMake(photoSize.width * initialZoom, photoSize.height * initialZoom)]; // Center the photo. Again we push the center point up by 44 pixels // to account for the translucent navigation bar. CGPoint scrollCenter = [scrollView center]; [imageView setCenter:CGPointMake(scrollCenter.x, scrollCenter.y - 44.0)]; } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [[[self navigationController] navigationBar] setBarStyle:UIBarStyleBlackTranslucent]; [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackTranslucent animated:YES]; } - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; [[[self navigationController] navigationBar] setBarStyle:UIBarStyleDefault]; [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault animated:YES]; } - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView { return imageView; } @end

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  • I'm trying to make lots of the same object appear randomly on the screen subject to conditions and k

    - by Katsideswide
    Hi! A good friend recommended this site to me, it looks really useful! I'm a bit of a shameless noob at actionscript and after 3 days of tutorials and advice I've hit a brick wall. I've managed to get a sensor attached to an arduino talking to flash using something called AS3glue. it works, when i set up a trace("leaf") for the contition that the sensor reads 0, i get a printout of the word "leaf". however i want the program to make a graphic appear on the screen when this condition is met, not just trace something. I'm trying to get the program to generate a library object called "Enemy" on the screen at a random position each time the conditions are met. It's called enemy because I was following a game tutorial...actually it's a drawing of a leaf. Here's the bit of the code which is causing me problems: var army:Array; var enemy:Enemy; function AvoiderGame() { army = new Array(); var newEnemy = new Enemy( 100, 100 ); army.push( newEnemy ); addChild( newEnemy ); } function timerEvent(event:Event):void { if (a.getAnalogData(0) ==0 && a.getAnalogData(0) != this.lastposition){ trace("leaf"); var randomX:Number = (Math.random() * 200) + 100; var randomY:Number = (Math.random() * 150) + 50; var newEnemy = new Enemy( randomX, randomY); army.push( newEnemy ); addChild( newEnemy ); } else if (a.getAnalogData(0) == 0) { //don't trace anything } else { //don't trace anything } this.lastposition = a.getAnalogData(0); //afterwards, set the position to be the new lastposition and repeat. } I've imported "import flash.display.MovieClip;" and the code for the Enemy class looks like this: package { import flash.display.MovieClip; public class Enemy extends MovieClip { public function Enemy( startX:Number, startY:Number ) { x = startX; y = startY; } } } Here's my error. I've tried googling, it seems like a pretty general error: TypeError: Error #1009: Cannot access a property or method of a null object reference. at as3glue_program_fla::MainTimeline/timerEvent() at flash.utils::Timer/_timerDispatch() at flash.utils::Timer/tick() I've made sure that the "Enemy" object is exported for AS3. I'm going for something like this when it's programmed in AS2: leafCounter = 0; //set the counter to 0 counter.swapDepths(1000); //puts the counter on top of pretty much anything, unless you make more than 1000 leaves! counter.textbox.text = 0; //shows "0" in the text box in the "counter" movie clip this.onMouseDown = function() { //triggers when the mouse is clicked this.attachMovie("Leaf","Leaf"+leafCounter,leafCounter,{_x:Math.random()*Stage.width,_y:Math.random()*Stage.height,_rotation:Math.random()*360}); //adds a leaf to rthe stage with a random position and random rotation leafCounter++; //adds 1 to the leaf counter counter.textbox.text = leafCounter; //shows that number in the text box } I'm sure it must be a simple error, I can get the logic working when it just traces something on the screen but i can't get it to generate an "enemy" Any help or hints would be really useful! I know this is a bit of a ham-fisted job of altering existing code.

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  • GRUB 2 freezing at OS selection screen, what could be the cause?

    - by Michael Kjörling
    Mains power is somewhat unreliable where I live, so every now and then, the computer gets rebooted when the PSU can't maintain proper voltage during a brown-out or momentary black-out. It's happened a few times recently that when power is restored, the BIOS POST completes successfully, GRUB starts to load and then freezes. I've seen this at the Welcome to GRUB! message, but it seems to happen more often just past the switch to the graphical OS list. At this point, the computer will not respond to anything (arrow keys, control commands, Ctrl+Alt+Del, ...) - it simply sits there displaying this image, seemingly doing nothing more. At that point, turning the computer off using the power button and letting it sit for a while (cooling down?) has allowed it to boot successfully. Turning the computer off and immediately back on seems to give the same result (successful POST then freeze in GRUB). This behavior began recently, although does not seem to be directly correlated with my hard disk woes (although it may be relevant that GRUB resides on that physical disk, I don't know). Once the computer has booted, it runs without a hitch. I know that a "proper" solution would be to invest in a UPS, but what might be causing behavior like this? I was thinking in terms of perhaps the CPU shutting down as a thermal control measure, but if that was the cause then wouldn't I see similar freezes during use (which I do not)? What else could cause freezes apparently closely but not perfectly related to the BIOS handover from POST to OS bootloader? The BIOS settings are to reset to previous power status after a power loss. Since the PC in question is almost always turned on, this means restore to full power status. I have no expansion cards installed that make any BIOS extensions known by screen output during the boot process, at least, but I do have a few expansion cards installed. Haven't made any changes in that regard in a long time, now. I haven't touched GRUB itself for a long time, whether configuration or binaries, so I don't think that's the problem. Also, it doesn't really make sense that a bug in GRUB would manifest itself only once in a blue moon but significantly more often after a power failure.

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  • $this->headLink() includes duplicated script

    - by terrani
    Hi, Just like I did before, I used the following code for my new project. <?=$this->headLink()->appendStylesheet('/Layouts/admin/css/button.css');?> <?=$this->headLink()->appendStylesheet('/Layouts/admin/css/inputText.css');?> <?=$this->headLink()->appendStylesheet('/Layouts/admin/css/fancyTable.class.css');?> when I open the website and view source, there are duplicated css link tags. <link href="/Layouts/admin/css/button.css" media="screen" rel="stylesheet" type="text/css" ><link href="/Layouts/admin/css/button.css" media="screen" rel="stylesheet" type="text/css" > <link href="/Layouts/admin/css/inputText.css" media="screen" rel="stylesheet" type="text/css" ><link href="/Layouts/admin/css/button.css" media="screen" rel="stylesheet" type="text/css" > <link href="/Layouts/admin/css/inputText.css" media="screen" rel="stylesheet" type="text/css" > <link href="/Layouts/admin/css/fancyTable.class.css" media="screen" rel="stylesheet" type="text/css" > <link href="/Layouts/admin/css/button.css" media="screen" rel="stylesheet" type="text/css" > <link href="/Layouts/admin/css/inputText.css" media="screen" rel="stylesheet" type="text/css" > <link href="/Layouts/admin/css/fancyTable.class.css" media="screen" rel="stylesheet" type="text/css" > <link href="/Layouts/admin/css/divine.css" media="screen" rel="stylesheet" type="text/css" > What is going on with my code??

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  • What You Need to Know About Windows 8.1

    - by Chris Hoffman
    Windows 8.1 is available to everyone starting today, October 19. The latest version of Windows improves on Windows 8 in every way. It’s a big upgrade, whether you use the desktop or new touch-optimized interface. The latest version of Windows has been dubbed “an apology” by some — it’s definitely more at home on a desktop PC than Windows 8 was. However, it also offers a more fleshed out and mature tablet experience. How to Get Windows 8.1 For Windows 8 users, Windows 8.1 is completely free. It will be available as a download from the Windows Store — that’s the “Store” app in the Modern, tiled interface. Assuming upgrading to the final version will be just like upgrading to the preview version, you’ll likely see a “Get Windows 8.1″ pop-up that will take you to the Windows Store and guide you through the download process. You’ll also be able to download ISO images of Windows 8.1, so can perform a clean install to upgrade. On any new computer, you can just install Windows 8.1 without going through Windows 8. New computers will start to ship with Windows 8.1 and boxed copies of Windows 8 will be replaced by boxed copies of Windows 8.1. If you’re using Windows 7 or a previous version of Windows, the update won’t be free. Getting Windows 8.1 will cost you the same amount as a full copy of Windows 8 — $120 for the standard version. If you’re an average Windows 7 user, you’re likely better off waiting until you buy a new PC with Windows 8.1 included rather than spend this amount of money to upgrade. Improvements for Desktop Users Some have dubbed Windows 8.1 “an apology” from Microsoft, although you certainly won’t see Microsoft referring to it this way. Either way, Steven Sinofsky, who presided over Windows 8′s development, left the company shortly after Windows 8 was released. Coincidentally, Windows 8.1 contains many features that Steven Sinofsky and Microsoft refused to implement. Windows 8.1 offers the following big improvements for desktop users: Boot to Desktop: You can now log in directly to the desktop, skipping the tiled interface entirely. Disable Top-Left and Top-Right Hot Corners: The app switcher and charms bar won’t appear when you move your mouse to the top-left or top-right corners of the screen if you enable this option. No more intrusions into the desktop. The Start Button Returns: Windows 8.1 brings back an always-present Start button on the desktop taskbar, dramatically improving discoverability for new Windows 8 users and providing a bigger mouse target for remote desktops and virtual machines. Crucially, the Start menu isn’t back — clicking this button will open the full-screen Modern interface. Start menu replacements will continue to function on Windows 8.1, offering more traditional Start menus. Show All Apps By Default: Luckily, you can hide the Start screen and its tiles almost entirely. Windows 8.1 can be configured to show a full-screen list of all your installed apps when you click the Start button, with desktop apps prioritized. The only real difference is that the Start menu is now a full-screen interface. Shut Down or Restart From Start Button: You can now right-click the Start button to access Shut down, Restart, and other power options in just as many clicks as you could on Windows 7. Shared Start Screen and Desktop Backgrounds; Windows 8 limited you to just a few Steven Sinofsky-approved background images for your Start screen, but Windows 8.1 allows you to use your desktop background on the Start screen. This can make the transition between the Start screen and desktop much less jarring. The tiles or shortcuts appear to be floating above the desktop rather than off in their own separate universe. Unified Search: Unified search is back, so you can start typing and search your programs, settings, and files all at once — no more awkwardly clicking between different categories when trying to open a Control Panel screen or search for a file. These all add up to a big improvement when using Windows 8.1 on the desktop. Microsoft is being much more flexible — the Start menu is full screen, but Microsoft has relented on so many other things and you’d never have to see a tile if you didn’t want to. For more information, read our guide to optimizing Windows 8.1 for a desktop PC. These are just the improvements specifically for desktop users. Windows 8.1 includes other useful features for everyone, such as deep SkyDrive integration that allows you to store your files in the cloud without installing any additional sync programs. Improvements for Touch Users If you have a Windows 8 or Windows RT tablet or another touch-based device you use the interface formerly known as Metro on, you’ll see many other noticeable improvements. Windows 8′s new interface was half-baked when it launched, but it’s now much more capable and mature. App Updates: Windows 8′s included apps were extremely limited in many cases. For example, Internet Explorer 10 could only display ten tabs at a time and the Mail app was a barren experience devoid of features. In Windows 8.1, some apps — like Xbox Music — have been redesigned from scratch, Internet Explorer allows you to display a tab bar on-screen all the time, while apps like Mail have accumulated quite a few useful features. The Windows Store app has been entirely redesigned and is less awkward to browse. Snap Improvements: Windows 8′s Snap feature was a toy, allowing you to snap one app to a small sidebar at one side of your screen while another app consumed most of your screen. Windows 8.1 allows you to snap two apps side-by-side, seeing each app’s full interface at once. On larger displays, you can even snap three or four apps at once. Windows 8′s ability to use multiple apps at once on a tablet is compelling and unmatched by iPads and Android tablets. You can also snap two of the same apps side-by-side — to view two web pages at once, for example. More Comprehensive PC Settings: Windows 8.1 offers a more comprehensive PC settings app, allowing you to change most system settings in a touch-optimized interface. You shouldn’t have to use the desktop Control Panel on a tablet anymore — or at least not as often. Touch-Optimized File Browsing: Microsoft’s SkyDrive app allows you to browse files on your local PC, finally offering a built-in, touch-optimized way to manage files without using the desktop. Help & Tips: Windows 8.1 includes a Help+Tips app that will help guide new users through its new interface, something Microsoft stubbornly refused to add during development. There’s still no “Modern” version of Microsoft Office apps (aside from OneNote), so you’ll still have to head to use desktop Office apps on tablets. It’s not perfect, but the Modern interface doesn’t feel anywhere near as immature anymore. Read our in-depth look at the ways Microsoft’s Modern interface, formerly known as Metro, is improved in Windows 8.1 for more information. In summary, Windows 8.1 is what Windows 8 should have been. All of these improvements are on top of the many great desktop features, security improvements, and all-around battery life and performance optimizations that appeared in Windows 8. If you’re still using Windows 7 and are happy with it, there’s probably no reason to race out and buy a copy of Windows 8.1 at the rather high price of $120. But, if you’re using Windows 8, it’s a big upgrade no matter what you’re doing. If you buy a new PC and it comes with Windows 8.1, you’re getting a much more flexible and comfortable experience. If you’re holding off on buying a new computer because you don’t want Windows 8, give Windows 8.1 a try — yes, it’s different, but Microsoft has compromised on the desktop while making a lot of improvements to the new interface. You just might find that Windows 8.1 is now a worthwhile upgrade, even if you only want to use the desktop.     

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  • How can I change the images on an ImageButton in Android when using a OnTouchListener?

    - by Cody
    I have the following code which creates an ImageButton and plays a sound when clicked: ImageButton SoundButton1 = (ImageButton)findViewById(R.id.sound1); SoundButton1.setImageResource(R.drawable.my_button); SoundButton1.setOnTouchListener(new OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN ) { mSoundManager.playSound(1); return true; } return false; } }); The problem is that I want the image on the ImageButton to change when you press it. The OnTouchListener appears to be overriding the touch and not allowing the images to change. As soon as I remove the OnTouchListener, the ImageButton swaps to a different image when pressed. Any ideas on how I can have the images change on the ImageButton while still using the OnTouchListener? Thank you very much!

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  • Tween Animation Cannot Start

    - by David Dimalanta
    Do you have any reasons why my tween code didn't run or work? I already add the tween engine onto the library folder under LibGDX project folder and "Order and Export" it under Java Build Path at the Properties menu. My first two classes ran correctly and workly but my third class didn't work. Here's the sequence: First class is the first screen. Fade animation works on the company's logo. Second class is the second screen. Fade animation for the loading screen works. Third class is the third screen. After the second screen, now calls for the third screen. Animation stopped or won't run since I want the black screen to fade out at the start when the menu is here. Can you check if I did right? Look carefully by comment lines for explanation. //-----[ Animation Setup ]----- Tween.registerAccessor(Sprite.class, new Tween_Animation()); // --> Tween_Animation.java Tween_Manager = new TweenManager(); // --> I initialized it the TweenManager and seems okay. cb_start = new TweenCallback() // --> I'll use this when I choose START and the menu will fade in black. { @Override public void onEvent(int arg0, BaseTween<?> arg1) { goTo(); } }; Tween // --> This is where I focused the problem. .to(black_Sprite, Tween_Animation.ALPHA, 3f) .target(1) .ease(TweenEquations.easeInQuad) .repeatYoyo(200, 2.5f) // --> I set the repeat for 200 times when I noticed that the animation won't work! .start(Tween_Manager);

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  • How to change the font color of blackberry label field dynamically?

    - by Kumar
    I have one label field and three buttons with the name of red, yellow, blue. If I click the red button then the label field font color should be change to red; similarly if I click the yellow button then the font color should change to yellow; likewise according to the button color the color of font should change in the label field. Can anyone tell me how to do this? If you can, provide me some code snippet. Regards, S.Kumaran.

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  • Why is the ASP Repeater.Items collection empty, when controls are on the screen?

    - by Ryan
    I have an ASP page with the following repeater: <asp:Repeater runat="server" ID="RegionRepeater" DataSourceID="SqlDataSourceRegions" EnableViewState="true"> <ItemTemplate> <tr> <td valign="top"> <b><%#Eval("description")%></b> <asp:HiddenField runat="server" ID="RegionID" Value='<%#Eval("region_id")%>'/> </td> <td> <asp:FileUpload ID="FileUpload" runat="server" Width="368px" /> </td> </tr> </ItemTemplate> </asp:Repeater> (The repeater is inside a Wizard, inside a content pane). The code behind is connected to the protected void Wizard1_NextButtonClick(object sender, WizardNavigationEventArgs e) event. There are two items on the screen (two rows inside the table). However, when the code tries to read those items, the Items collection is empty! foreach(RepeaterItem region in RegionRepeater.Items) { // Never runs - the RegionRepeater.Items.Count = 0 FileUpload fileUpload = (FileUpload) region.FindControl("FileUpload"); String regionID = ((HiddenField)region.FindControl("RegionID")).Value; ... Why is the collection empty, when there are controls drawn on the screen? Thanks a lot for any help; this is starting to drive me nuts. (BTW: I tried adding/removing the EnableViewState="true" tag)

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  • How can I automatically change the system keyboard layout when plugging in an external keyboard?

    - by Andrew Bolster
    I have a US-Style laptop, which is fine, but I also have a UK-style Ergonomic USB keyboard. As such I usually have the US key layout set, but when I settle in at my desk and use the UK USB keyboard I find myself making stupid mistakes on symbols (normally a pretty good touch typist on either ergo or standard kbd). Can anyone think of a clean way of setting the keyboard layout based on the inferred layout/USBID of any plugged in Keyboard? Even having a custom setting such as adding a specific USB ID to a runtime script that checks if its plugged in or not. Can this be done without the user having to logout/in? I remember doing something similar with xorg.conf, but that required logout.

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  • How do I change which audio jacks are used for input and output?

    - by yamaha1996
    I'm using a Realtek HD audio card built-in my motherboard. The Windows driver comes with a control panel that allows me to select which back panel jacks are used for what. So for example I can make both the blue jack and green jack for output and only the red one for mic-in. (Whereas by default, the blue jack is for line in, which I never need.) How can I do the same under Linux? If possible, please don't suggest something that involves PulseAudio or JACK; I'd like to do it the plain way, e.g. by editing ALSA configuration files, if possible. The way I understand it, my problem should have nothing to do with software servers redirecting streams, just instructing the driver to treat this jack as so and so because it's hardware supported. Thank you very much!

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  • Command line is horribly slow in Ubuntu Server

    - by hekevintran
    I am running Ubuntu Server on VirtualBox. I am not using X Windows, only the command line. It looks like it is redrawing the screen for every line that causes the screen to shift down. In other words if there is empty space on the screen below the current line, it works normally, but if the current line is at the bottom of the screen, when the system moves to the next line it refreshes the whole screen line by line. This causes the system to run very slowly because I have to wait for the whole screen to refresh for every line and it hits the CPU at 90%. I installed Debian Lenny in VirtualBox and it didn't do this. Why does Ubuntu Server redraw the screen for each line? Is there a way to make this behaviour go away?

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  • What change in mindset are needed for a Jave/C# programmer when learning Swift?

    - by Ian
    Swift seem to fit into the same “space” as Java/C# as it was created to make it easier to create end user applications. It is also used to target smart phones like Java/C#. However reading it’s documentation it seems to come from anther universe, you could say it is from Jupiter while C#/Java is from Saturn. As a C# programmer I am finding myself making assumptions that are not true, so what are the conceptual “traps” that I should look out for while leaning about Swift?

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  • What management/development practices do you change when a team of 1-3 developers grows to 10+?

    - by Mag20
    My team built a website for a client several years ago. The site taffic has been growing very quickly and our client has been asking us to grow our team to fill their maintenance and feature request needs. We started with a small number of developers, and our team has grown - now we're in the double digits. What management/development changes are the most beneficial when team grows from small "garage-size" team to 10+ developers?

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  • iPhone OpenGL Splash Screen? How?

    - by Kyle
    My app is based pretty much on the EAGLView in the SDK. It doesn't incorporate a ViewController. Rather it simply inits GL and starts painting immediately.. Currently, my app will load a very small PNG and displays it as quickly as possible. On a 3GS this is rather instant, but on a 3G it can take about 2 seconds. In the latter case of the 3G, the user is looking at a black screen for that time. Is this behavior allowed by Apple? Is there any way to alter this SDK example so that it makes use of 'default.png'? It doesn't seem so straight forward to me. I want my user to see an image as quickly as possible, and I also don't want to be rejected for such a little quirk like this as well. In the guidelines, they encourage you to use default.png for standard applications to show a sort of mockup of the interface while it actually loads. I want to initialize OpenGL, and ALSO display this. This default.png is loaded before the app screen launches. This is EXACLTY what I want to make use of. Any help is appreciated. Thanks!

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  • Pygame surfaces and their Rects

    - by Jaka Novak
    I am trying to understand how pygame surfaces work. I am confused about Rect position of Surface object. If I try blit surface on screen at some position then Surface is drawn at right position, but Rect of the surface is still at position (0, 0)... I tried write my own surface class with new rect, but i am not sure if is that right solution. My goal is that i could move surface like image with rect.move() or something like that. If there is any solution to do that i would be happy to read it. Thanks for answer and time for reading this awful English If helps i write some code for better understanding my problem. (run it first, and then uncomment two lines of code and run again to see the diference): import pygame from pygame.locals import * class SurfaceR(pygame.Surface): def __init__(self, size, position): pygame.Surface.__init__(self, size) self.rect = pygame.Rect(position, size) self.position = position self.size = size def get_rect(self): return self.rect def main(): pygame.init() screen = pygame.display.set_mode((640, 480)) pygame.display.set_caption("Screen!?") clock = pygame.time.Clock() fps = 30 white = (255, 255, 255) red = (255, 0, 0) green = (0, 255, 0) blue = (0, 0, 255) surface = pygame.Surface((70,200)) surface.fill(red) surface_re = SurfaceR((300, 50), (100, 300)) surface_re.fill(blue) while True: for event in pygame.event.get(): if event.type == QUIT: return 0 screen.blit(surface, (100,50)) screen.blit(surface_re, surface_re.position) #pygame.draw.rect(screen, white, surface.get_rect()) #pygame.draw.rect(screen, white, surface_re.get_rect()) pygame.display.update() clock.tick(fps) if __name__ == "__main__": main()

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