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  • setting an ImageView to invisable inside a custom Adapter

    - by iyad al aqel
    i'm defining my own list adapter and i want an image inside it to be shown OR hidden based on a value what i've noticed that its always invisible or visible disregarding the value Here's my code , this code is inside the getView method singleRow=data.get(position); readit = singleRow.getRead(); Log.i("readit","" + readit ); //NotificationID=singleRow.getId(); holder.title.setText(singleRow.getAttach_title()); holder.date.setText( singleRow.getAttach_created()); holder.dueDate.setVisibility(ImageView.INVISIBLE); holder.course.setText(singleRow.getCourse_title()); if(readit==1) { //holder.read.setImageResource(IGNORE_ITEM_VIEW_TYPE); holder.read.setVisibility(ImageView.INVISIBLE); } else { holder.read.setImageResource(R.drawable.unread); }

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  • Spatial Index for Rectangles With Fast Insert

    - by TheCloudlessSky
    Hello, I'm looking for a data structure that provides indexing for Rectangles. I need the insert algorithm to be as fast as possible since the rectangles will be moving around the screen (think of dragging a rectangle with your mouse to a new position). I've looked into R-Trees, R+Trees, kD-Trees, Quad-Trees and B-Trees but from my understanding insert's are usually slow. I'd prefer to have inserts at sub-linear time complexity so maybe someone can prove me wrong about either of the listed data structures. I should be able to query the data structure for what rectangles are at point(x, y) or what rectangles intersect rectangle(x, y, width, height). EDIT: The reason I want insert so fast is because if you think of a rectangle being moved around the screen, they're going to have to be removed and then re-inserted. Thanks!

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  • 2d String Array NullPointerException (java)

    - by Student01
    I am currently creating a java application in which I have a 2d array which I want to get some data into. I am creating the 2d array as such String[][] addressData; and then when I am trying to put data in I am using reference the exact position in the 2d array I want to enter the data into e.g addressData[0][0] = "String Data"; The program compiles yet when I run I get a NullPointerException error. Am I using the wrong method to enter data into this 2d array?

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  • IE8 alignment in div issue

    - by xrx215
    How to align the the button in center of div in IE8. Works fine in IE7 but not in IE8 <div id="dPopupFooter" style="background-color: #d9d9d9; position: absolute; z-index: 5; bottom: 0px; width: 100%; height: 30px; border-top: solid 1px #acacac; text-align: center; padding-top: 3px;"> <table><tr><td><xrx:CustomButton id="btnClose" runat="server" OnClientClick="ClosePopup();" /></td></tr></table> </div>

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  • How do I add a textbox to my other jQuery click function?

    - by marcamillion
    Right now, my script adds a box to the cursor when I click on an image, as can be seen in the following code. Please note, this is jQuery. $(function() { var tag_box = $("<div>").appendTo("body").css({"width":"40px", "height":"40px", "border":"4px solid #000000", "position":"absolute", "display":"none", "padding":"15px"}); $("#image-wrapper").live('click', function(e){ tag_box.css({"left": e.pageX - 40, "top": e.pageY - 40, "display":"block"}); }); I would like to add a text field to appear right below that tag_box on that same click. I tried to do this, but it hasn't worked out like I thought it would: var comment_box = $("<label> Comment: <input type='text' name='comment' autocomplete='off'></label>"); $("#image-wrapper").live('click', function(){ $("body").append(comment_box); }); Any assistance you can give me, would be greatly appreciated. Thanks.

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  • Binding to static property

    - by Anthony Brien
    I'm having a hard time binding a simple static string property to a text box. Here's the class with the static property: public class VersionManager { private static string filterString; public static string FilterString { get { return filterString; } set { filterString = value; } } } In my xaml, I just want to bind this static property to a text box: <TextBox> <TextBox.Text> <Binding Source="{x:Static local:VersionManager.FilterString}"/> </TextBox.Text> </TextBox> Everything compiles, but at run time, I get the following exception: Cannot convert the value in attribute 'Source' to object of type 'System.Windows.Markup.StaticExtension'. Error at object 'System.Windows.Data.Binding' in markup file 'BurnDisk;component/selectversionpagefunction.xaml' Line 57 Position 29. Any idea what I'm doing wrong?

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  • Sprite backgrounds

    - by Mattias Akerman
    I use cocos2d for iphone and in my game I'm using a sprite as static background image. I've noticed that when removing code for adding the sprite the framerate goes from ~30fps to over 40fps. Is it any other way to show a static background that is less expensive? I'm not moving the background sprite at all. To code right now: background = [Sprite spriteWithFile:@"t1_5.jpg"]; [self addChild:background z:0]; background.position = ccp(240, 160);

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  • Return a dynamic string from std::exception's `what`

    - by Shtééf
    I'm convinced at this point that I should be creating subclasses of std::exception for all my exception throwing needs. Now I'm looking at how to override the what method. The situation that I'm facing, it would be really handy if the string what returns be dynamic. Some pieces of code parse an XML file for example, and adding a position or line number to the error message is useful to me. What I'd like to know: what returns a const char *, which implies any catcher is likely not going to free the string. So I need some other place to store the result, but where would that be? (I need thread-safety.) what also includes throw() in its signature. While I can prevent my what from throwing anything, it seems to me that this method really isn't intended for anything too dynamic. If what is not the right place, then where should I be doing this instead?

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  • CSS Negative margins for positioning.

    - by Kyle Sevenoaks
    Is it ok to use negative margins for positioning? I have a lot in my current site and feel like it's not such a stable way to position things. I usually suggest to use them too. For example I have a checkout page with three divs on top of each other <div class="A"> header </div> <div class="B"> content </div> <div class="C"> footer </div> (A, B and C), which are meant to sit on top of each other, to appear attached. I did this using: .B { margin-top: -20px; } On div B, to meet the bottom of div A. Is this good practice or shall I re-code using top and left?

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  • Guiding a Robot Through a Path

    - by Hamza Yerlikaya
    I have a field filled with obstacles, I know where they are located, and I know the robot's position. Using a path-finding algorithm, I calculate a path for the robot to follow. Now my problem is, I am guiding the robot from grid to grid but this creates a not-so-smooth motion. I start at A, turn the nose to point B, move straight until I reach point B, rinse and repeat until the final point is reached. So my question is: What kind of techniques are used for navigating in such an environment so that I get a smooth motion? The robot has two wheels and two motors. I change the direction of the motor by turning the motors in reverse. EDIT: I can vary the speed of the motors basically the robot is an arduino plus ardumoto, I can supply values between 0-255 to the motors on either direction.

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  • Change element class without using css animation

    - by Akshat
    I have a class with the following type of css animaton .cssanimation { -webkit-transition: 0.2s all ease-in-out -o-transition: 0.2s all ease-in-out -moz-transition: 0.2s all ease-in-out transition: 0.2s all ease-in-out .. some other changes in position } I have the div <div id="thediv"> ... </div> $('#thediv').addClass('cssanimation') //animates the object I do use this animation at some point but sometimes I'd like to add it without invoking the animation Does Jquery have a way in which I can add classes without invoking their css animations?

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  • Multi-part gzip file random access (in Java)

    - by toluju
    This may fall in the realm of "not really feasible" or "not really worth the effort" but here goes. I'm trying to randomly access records stored inside a multi-part gzip file. Specifically, the files I'm interested in are compressed Heretrix Arc files. (In case you aren't familiar with multi-part gzip files, the gzip spec allows multiple gzip streams to be concatenated in a single gzip file. They do not share any dictionary information, it is simple binary appending.) I'm thinking it should be possible to do this by seeking to a certain offset within the file, then scan for the gzip magic header bytes (i.e. 0x1f8b, as per the RFC), and attempt to read the gzip stream from the following bytes. The problem with this approach is that those same bytes can appear inside the actual data as well, so seeking for those bytes can lead to an invalid position to start reading a gzip stream from. Is there a better way to handle random access, given that the record offsets aren't known a priori?

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  • javascript div positioning

    - by sam
    hello folks., please suggest me a solution.. i am using this script to display an image as popup on mouseover.. the difficulty i am facing is that it is not positioning well in different monitor.. it must be something to do with pixcel.. function LargeImage(obj,e) { var imgbtn=document.getElementById('<%=imgbtn1.ClientID%'); imgbtn.src=obj; document.getElementById('imgbox').style.visibility="visible"; document.getElementById('imgbox').style.position="absolute"; document.getElementById('imgbox').style.left=e.clientX-150 + "px"; document.getElementById('imgbox').style.top=225 +"px"; //225 +"px"; } thank you

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  • DataContractJsonSerializer set value extension point

    - by svinto
    using System.IO; using System.Runtime.Serialization; using System.Runtime.Serialization.Json; using System.Text; namespace ConsoleApplication1 { internal class Program { private static void Main(string[] args) { var pony = new Pony(); var serializer = new DataContractJsonSerializer(pony.GetType()); var example = @"{""Foo"":null}"; var stream = new MemoryStream(Encoding.UTF8.GetBytes(example.ToCharArray())); stream.Position = 0; pony = (Pony) serializer.ReadObject(stream); // The previous line throws an exception. } } [DataContract] public class Pony { [DataMember] private int Foo { get; set; } } } Sometimes the serialization throws a casting error on Int32s being set to null. Is there any way to hook into the Json-serializer?

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  • Need help on Coda slider tabs to move inside an overflow:hidden div

    - by Reden
    I'm not too good at javascript. and hope I can get a bit of help. I'm using Coda Slider 2.0, and have designed it to where the tabs are another slider to the right of the main slider, and each item. Basically like this mootools plugin http://landofcoder.com/demo/mootool/lofslidernews/index2.1.html Problem is the items will not scroll. How do I make the items (or tabs to the right) scroll down as the slider rotates? Otherwise the slider will show the 4th slide but not scroll to the 4th item on the right, but Thanks everyone. Here is the Coda-Slider plugin: // when the DOM is ready... $(document).ready(function () { var $panels = $('#slider .scrollContainer > div'); var $container = $('#slider .scrollContainer'); // if false, we'll float all the panels left and fix the width // of the container var horizontal = true; // float the panels left if we're going horizontal if (horizontal) { $panels.css({ 'float' : 'left', 'position' : 'relative' // IE fix to ensure overflow is hidden }); // calculate a new width for the container (so it holds all panels) $container.css('width', $panels[0].offsetWidth * $panels.length); } // collect the scroll object, at the same time apply the hidden overflow // to remove the default scrollbars that will appear var $scroll = $('#slider .scroll').css('overflow', 'hidden'); // apply our left + right buttons $scroll .before('<img class="scrollButtons left" src="images/scroll_left.png" />') .after('<img class="scrollButtons right" src="images/scroll_right.png" />'); // handle nav selection function selectNav() { $(this) .parents('ul:first') .find('a') .removeClass('selected') .end() .end() .addClass('selected'); } $('#slider .navigation').find('a').click(selectNav); // go find the navigation link that has this target and select the nav function trigger(data) { var el = $('#slider .navigation').find('a[href$="' + data.id + '"]').get(0); selectNav.call(el); } if (window.location.hash) { trigger({ id : window.location.hash.substr(1) }); } else { $('ul.navigation a:first').click(); } // offset is used to move to *exactly* the right place, since I'm using // padding on my example, I need to subtract the amount of padding to // the offset. Try removing this to get a good idea of the effect var offset = parseInt((horizontal ? $container.css('paddingTop') : $container.css('paddingLeft')) || 0) * -1; var scrollOptions = { target: $scroll, // the element that has the overflow // can be a selector which will be relative to the target items: $panels, navigation: '.navigation a', // selectors are NOT relative to document, i.e. make sure they're unique prev: 'img.left', next: 'img.right', // allow the scroll effect to run both directions axis: 'xy', onAfter: trigger, // our final callback offset: offset, // duration of the sliding effect duration: 500, // easing - can be used with the easing plugin: // http://gsgd.co.uk/sandbox/jquery/easing/ easing: 'swing' }; // apply serialScroll to the slider - we chose this plugin because it // supports// the indexed next and previous scroll along with hooking // in to our navigation. $('#slider').serialScroll(scrollOptions); // now apply localScroll to hook any other arbitrary links to trigger // the effect $.localScroll(scrollOptions); // finally, if the URL has a hash, move the slider in to position, // setting the duration to 1 because I don't want it to scroll in the // very first page load. We don't always need this, but it ensures // the positioning is absolutely spot on when the pages loads. scrollOptions.duration = 1; $.localScroll.hash(scrollOptions); /////////////////////////////////////////////// // autoscroll /////////////////////////////////////////////// // start to automatically cycle the tabs cycleTimer = setInterval(function () { $scroll.trigger('next'); }, 2000); // how many milliseconds, change this to whatever you like // select some trigger elements to stop the auto-cycle var $stopTriggers = $('#slider .navigation').find('a') // tab headers .add('.scroll') // panel itself .add('.stopscroll') // links to the stop class div .add('.navigation') // links to navigation id for tabs .add("a[href^='#']"); // links to a tab // this is the function that will stop the auto-cycle function stopCycle() { // remove the no longer needed stop triggers clearInterval(cycleTimer); // stop the auto-cycle itself $buttons.show(); // show the navigation buttons document.getElementById('stopscroll').style.display='none'; // hide the stop div document.getElementById('startscroll').style.display='block'; // block the start div } // bind stop cycle function to the click event using namespaces $stopTriggers.bind('click.cycle', stopCycle); /////////////////////////////////////////////// // end autoscroll /////////////////////////////////////////////// // edit to start again /////////////////////////////////////////////// // select some trigger elements to stop the auto-cycle var $startTriggers_start = $('#slider .navigation').find('a') // tab headers .add('.startscroll'); // links to the start class div // this is the function that will stop the auto-cycle function startCycle() { // remove the no longer needed stop triggers $buttons.hide(); // show the navigation buttons $scroll.trigger('next'); // directly to the next first cycleTimer = setInterval(function () { // now set timer again $scroll.trigger('next'); }, 5000); // how many milliseconds, change this to whatever you like document.getElementById('stopscroll').style.display='block'; // block the stop div document.getElementById('startscroll').style.display='none'; // hide the start div } // bind stop cycle function to the click event using namespaces $startTriggers_start.bind('click.cycle', startCycle); /////////////////////////////////////////////// // end edit to start /////////////////////////////////////////////// });

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  • size of view not changing after frame change

    - by MikeNelson
    I have managed to do pretty complex things on iPhone but I am always stuck with views, frames, bounds, and simple stuff that defies any logic and don't work as expected. I have a self.view in my code and it has a lot of subviews on it. At some point of the code, I need to reduce the frame vertically to a specific size and later put it back as before. Then I have this code: [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:1.5]; // frame is changing to a newHeight (other parameters are the same as before) self.view.frame = CGRectMake (0, 0, originalWidth, newHeight); [UIView commitAnimations]; The result is simply, nothing. The view continues as before. The same size, the same position. No change. Why this kind of thing happens? how to solve that?

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  • Identifying an empty text node with jQuery + Javascript

    - by b. e. hollenbeck
    You'd think this was easy - but I'm having the hardest time with it. Here's what I'm trying to identify: <span class="cw-value-one"></span> Here's what I'm using so far: $('span.cw-value-one').each(function(){ var textNode = $(this).text(); var type = typeof textNode; var len = textNode.length; if($(this).is(':empty')){ $(this).siblings('span.cw-value-two').css({"position": "relative", "left": "1em"}); } }); Ok, so textNode = "", type = string and len = 1 - none of which is helpful in identifying an empty text node, since a has a type of string and length of 1. The jQuery .is(':empty') is not working either. So whow do you identify an empty text node in JQuery or plain ol' Javascript?

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  • How can I easily get a TextReader from an XDocument?

    - by Mark Seemann
    Given an XDocument instance, how can I easily get a TextReader that represents that instance? The best I've been able to come up with is something like this (where xml is an XDocument instance): var s = new MemoryStream(); var sw = new StreamWriter(s); xml.Save(sw); sw.Flush(); s.Position = 0; TextReader tr = new StreamReader(s); However, this seems a little clunky, so I was wondering if there's an easier way?

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  • can't get rid of top and bottom drop shadows

    - by Jawad
    Why with the following code, I still can't get rid of drop shadows at the top and bottom. Although the drop shadows are "small", yet still they are there. div#inner_container { width: 960px; margin: 0px auto; background-color: rgb(255, 255, 255); box-shadow: 0 9px 0px 0px transparent, 0 -9px 0px 0px transparent, 12px 0 15px -4px rgba(255, 255, 255, 0.5), -12px 0 15px -4px rgba(255, 255, 255, 0.5); position: relative; z-index: 5000; }

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  • Replacing backslash with another symbol in PHP

    - by Skyfe
    Hi there, Been struggling with replacing a backslash by another symbol such as '.-.' just to indicate the position of backslashes as I could not send a string such as 'C\xampp\etc.' through url as GET variable so I thought I'd first replace the backslashes in that string by another symbol, then send through url, and then replace them back to backslashes in the PHP file that handles it. Though would there be a better way to send such strings through url? Because when I try a script such as: $tmp_name = preg_replace("\", ".-.", $_FILES['uploadfile']['tmp_name']); It turns out into a php error as \ is also used as delimiter.. Could anyone help me out on this? Thanks in advanced! Btw, if I'd be able to send a full array through url, this whole problem would be solved, but I don't think it's possible?

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  • iPhone: Infinitely looping content inside UIScrollView

    - by Cuzog
    In my app, I'm designing a custom picker that allows the user to choose an item by scrolling horizontally and touching it. I need the buttons inside that view to loop around infinitely as the user scrolls in a certain direction. What would be the best way to tackle this feature while maintaining the inertial scrolling of UIScrollView when the content loops around out of the view? From my research of others trying to attempt this, they have trouble maintaining the deceleration animation if the scroll position is programatically shifted mid-scroll after the user lifts their finger. How can I work around this limitation? An example of an app that currently has this feature is Apple's MobileMe Gallery app. In the interface, after choosing a gallery, at the top, there is a horizontally scrollable photo picker that loops infinitely as it is dragged one direction. Any advice is greatly appreciated.

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  • small javascript problem

    - by dfg
    Hi, I have this little function that opens modal window type thing. The problem is that it doesnt work on IE. All other browser its fine, but on IE, nothing happends: function showOverlayBox() { if( isOpen == false ) return; $('#full').css({ display:'block', left: ( $(window).width() - $('#full').width() )/2, top: ( $(window).height() - $('#full').height() )/2, position:'absolute' }); $('.BgCover').css({ display:'block', width: $(window).width(), height: $(window).height() }); } function doOverlayOpen() { isOpen = true; showOverlayBox(); $('.BgCover').css({opacity:0}).animate( {opacity:0.8} ); return false; } function doOverlayClose() { $('#full').css( 'display', 'none' ); $('.BgCover').animate( {opacity:0}, null, null, function() { $(this).hide(); } ); } Maybe something to do with isOpen == false?

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  • JQuery animate div "like" a Zoom

    - by Russell Parrott
    I can never get these to work - sorry - but I I am trying to animate on a mouse over then "re-animate" on a mouse out. I can never get $('#xyz').hover(function(){'something',function(){'somethingelse'}); to work. Hope you guys can help. What I am trying to do is animate + and - 20px (top and left) on some absolutely positioned divs and then add 40px to the width height returning to the original position/width/height on mouse out. I haven't even got to the css widths/heights yet .... Here is my code (which is wrong - well it must be as it doesn't work :-) ) $('.box').hover(function(){ $(this).animate({'top':'-20','left':'-20'},function(){ $(this).animate({'top':'20','left':'20' }); }); Help really appreciated. Thanks in advance

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  • How come BraceMatch() doesn't work when a lexer is set in wxStyledTextCtrl?

    - by George Edison
    I have the following chunk of C++ code that gets called when } is pressed: int iCurPos = GetCurrentPos(); InsertText(iCurPos,wxT("}")); int iPos = BraceMatch(iCurPos); This works fine (iPos gets the position of the matching brace) except when I call SetLexer(...) beforehand. Then it returns -1? How can I get it to work? Edit: I should point out that the above code is being called from the EVT_KEY_DOWN handler in a wxStyledTextCtrl-derived class.

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  • Jquery, get div width when overflow: hidden;

    - by Fabio
    Hello all. How can I get a div width when the div is inside another div with "overflow: hidden;" ? I tried to set overflow as auto and after using $("#divselector").width() but I always get the parent div width! Ex: html: <div id="content"> <div id="item">content content content ...</div> </div> css: #content { width: 760px; height: 100%; overflow: hidden; display: block; position: relative; cursor: move; }

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