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  • How a JIT compiler helps performance of applications?

    - by igorgue
    I just read that Android has a 450% performance improvement because it added a JIT compiler, I know what JIT is, but I don't really understand why is it faster than normal compiled code? or what's the difference with the older approach from the Android platform (the Java like run compiled bytecode). Thanks!

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  • Display custom title bar in XML

    - by Casebash
    In Android documentation describing "Configuring General Window Properties", it is suggested that specifying properties via XML is preferable whenever possible. As an example, instead of setting Window.FEATURE_NO_TITLE with requestWindowFeature, they set it to @android:style/Theme.NoTitleBar. Is there a similar way to set a custom title bar to be used in the XML?

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  • Save UIView's representation to file.

    - by fish potato
    What is the easiest way to save UIView's representation to file? My solution is, UIGraphicsBeginImageContext(someView.frame.size); [someView drawRect:someView.frame]; UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); NSString* pathToCreate = @"sample.png"; NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(image)]; [imageData writeToFile:pathToCreate atomically:YES]; but it seems tricky, and I think there must be more efficient way to do this.

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  • Getting pixel averages of a vector sitting atop a bitmap...

    - by user346511
    I'm currently involved in a hardware project where I am mapping triangular shaped LED to traditional bitmap images. I'd like to overlay a triangle vector onto an image and get the average pixel data within the bounds of that vector. However, I'm unfamiliar with the math needed to calculate this. Does anyone have an algorithm or a link that could send me in the right direction? (I tagged this as Python, which is preferred, but I'd be happy with the general algorithm!) I've created a basic image of what I'm trying to capture here: http://imgur.com/Isjip.gif

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  • Creating a Custom Compound Button Bar

    - by vijay
    I have to create a custom compound button bar control in Android like the one here. To create a button bar like this, I am thinking of extending a LinearLayout and add my buttons to it. The buttons have a black background but with a gradient fill; I am not keen on using PNGs since the color of the buttons can change at runtime. How can I get similar effect in Android? Thanks.

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  • Expandable list with animated effect

    - by Naveen Chauhan
    I am using this animation class to create the animation when i shrink and expand the list on some click event import android.view.View; import android.view.animation.Animation; import android.view.animation.Transformation; import android.widget.LinearLayout.LayoutParams; public class ExpandAnimation extends Animation{ private View mAnimatedView; private LayoutParams mViewLayoutParams; private int mMarginStart, mMarginEnd; private boolean mIsVisibleAfter = false; private boolean mWasEndedAlready = false; public ExpandAnimation(View view, int duration){ setDuration(duration); mAnimatedView = view; System.out.println(view.getVisibility()); mViewLayoutParams = (LayoutParams)view.getLayoutParams(); mIsVisibleAfter = (view.getVisibility() == View.VISIBLE); System.out.println("mIsVisibleAfter:- "+ mIsVisibleAfter); mMarginStart = mViewLayoutParams.bottomMargin; System.out.println("mMarginStart:- "+ mMarginStart); mMarginEnd = (mMarginStart == 0 ?(0 - view.getHeight()):0); System.out.println("mMarginEnd:- "+mMarginEnd); view.setVisibility(View.VISIBLE); } @Override protected void applyTransformation(float interpolatedTime, Transformation t){ super.applyTransformation(interpolatedTime, t); System.out.println("mMarginEnd:- "+interpolatedTime); if(interpolatedTime<1.0f){ System.out.println("Inside if true"); mViewLayoutParams.bottomMargin = mMarginStart + (int) ((mMarginEnd - mMarginStart)*interpolatedTime); System.out.println("mViewLayoutParams.bottomMargin:- "+mViewLayoutParams.bottomMargin); mAnimatedView.requestLayout(); }else if(!mWasEndedAlready){ mViewLayoutParams.bottomMargin = mMarginEnd; mAnimatedView.requestLayout(); System.out.println("mIsVisibleAfter:- "+mIsVisibleAfter); if(mIsVisibleAfter){ mAnimatedView.setVisibility(View.GONE); } mWasEndedAlready = true; } } } i am using following lines on some click event in my activity class to create the object of my animation class View toolbar = (View) findViewById(R.id.toolbar1); ExpandAnimation expandani = new ExpandAnimation(toolbar,500); toolbar.startAnimation(expandani); My probem is that when click event occurs, my list expand and then shrink but it must stop when it grows completely and shrink when i click on up image. please let me know that how my animation class is working. i have also tried myself by using SOP statements which you can see in my animation class.

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  • Is it possible to set ContentType for a WCF WebGet method?

    - by James Cadd
    I'm working with a WCF restful/http method that returns a stream of image data. I want to make sure that the content type is marked as "image/png". The method is defined as: [ServiceContract] [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall)] public class TileImageService { [WebGet(UriTemplate = "{id}")] public Stream GetTileImage(string id) { Bitmap bmp = new Bitmap(173, 173); Graphics g = Graphics.FromImage(bmp); g.Clear(Color.Blue); g.DrawString(DateTime.Now.ToLongTimeString(), new Font("Chiller", 20), Brushes.White, new PointF(10, 10)); g.Flush(); MemoryStream ms = new MemoryStream(); bmp.Save(ms, ImageFormat.Png); ms.Seek(0, SeekOrigin.Begin); return ms; } } In Firefox it looks like the content type is marked as application/octet stream. Is there a way to change the content type?

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  • "painting" one array onto another using python / numpy

    - by Nate
    I'm writing a library to process gaze tracking in Python, and I'm rather new to the whole numpy / scipy world. Essentially, I'm looking to take an array of (x,y) values in time and "paint" some shape onto a canvas at those coordinates. For example, the shape might be a blurred circle. The operation I have in mind is more or less identical to using the paintbrush tool in Photoshop. I've got an interative algorithm that trims my "paintbrush" to be within the bounds of my image and adds each point to an accumulator image, but it's slow(!), and it seems like there's probably a fundamentally easier way to do this. Any pointers as to where to start looking?

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  • Configure Git to use Beyond Compare for image diff

    - by Barney
    Because we work with a number of sprites, the kind of specialised diff views provided by Beyond Compare would be ideal to see which one of 2 versions I'm after when conflicts arise. I've already configured Git to use Beyond Compare as my primary diff and merge tool as described in their integration guide — it specifically goes into how to configure TortoiseSVN to use it for images, and I've found these articles talking about .gitattributes in general and how to script interactions from a *nix shell — but it's not obvious to me how I can use the advice provided by these guides to make a simple change that would say "use the default diff & merge bindings for files determined to be images, too". For the record, I'm doing all this on Windows :P

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  • In Corona SDK the background image always cover other images

    - by user1446126
    I'm currently making a tower defense game with Corona SDK. However, while I'm making the gaming scene, The background scene always cover the monster spawn, I've tried background:toBack() ,however it's doesn't work.Here is my code: module(..., package.seeall) function new() local localGroup = display.newGroup(); local level=require(data.levelSelected); local currentDes = 1; monsters_list = display.newGroup() --The background local bg = display.newImage ("image/levels/1/bg.png"); bg.x = _W/2;bg.y = _H/2; bg:toBack(); --generate the monsters function spawn_monster(kind) local monster=require("monsters."..kind); newMonster=monster.new() --read the spawn(starting point) in level, and spawn the monster there newMonster.x=level.route[1][1];newMonster.y=level.route[1][2]; monsters_list:insert(newMonster); localGroup:insert(monsters_list); return monsters_list; end function move(monster,x,y) -- Using pythagoras to calauate the moving distace, Hence calauate the time consumed according to speed transition.to(monster,{time=math.sqrt(math.abs(monster.x-x)^2+math.abs(monster.y-y)^2)/(monster.speed/30),x=x, y=y, onComplete=newDes}) end function newDes() currentDes=currentDes+1; end --moake monster move according to the route function move_monster() for i=1,monsters_list.numChildren do move(monsters_list[i],200,200); print (currentDes); end end function agent() spawn_monster("basic"); end --Excute function above. timer2 = timer.performWithDelay(1000,agent,10); timer.performWithDelay(100,move_monster,-1); timer.performWithDelay(10,update,-1); move_monster(); return localGroup; end and the monster just stuck at the spawn point and stay there. but, When i comment these 3 lines of code: --local bg = display.newImage ("image/levels/1/bg.png"); --bg.x = _W/2;bg.y = _H/2; --bg:toBack(); The problem disappear Any ideas??Thanks for helping

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  • Click on notification starts activity twice

    - by Karussell
    I'm creating a notification from a service with the following code: NotificationManager notificationManager = (NotificationManager) ctx .getSystemService(Context.NOTIFICATION_SERVICE); CharSequence tickerText = "bla ..."; long when = System.currentTimeMillis(); Notification notification = new Notification(R.drawable.icon, tickerText, when); Intent notificationIntent = new Intent(ctx, SearchActivity.class). putExtra(SearchActivity.INTENT_SOURCE, MyNotificationService.class.getSimpleName()); PendingIntent contentIntent = PendingIntent.getActivity(ctx, 0, notificationIntent, 0); notification.setLatestEventInfo(ctx, ctx.getString(R.string.app_name), tickerText, contentIntent); notification.flags |= Notification.FLAG_AUTO_CANCEL; notificationManager.notify(1, notification); The logs clearly says that the the method startActivity is called twice times: 04-02 23:48:06.923: INFO/ActivityManager(2466): Starting activity: Intent { act=android.intent.action.SEARCH cmp=com.xy/.SearchActivity bnds=[0,520][480,616] (has extras) } 04-02 23:48:06.923: WARN/ActivityManager(2466): startActivity called from non-Activity context; forcing Intent.FLAG_ACTIVITY_NEW_TASK for: Intent { act=android.intent.action.SEARCH cmp=com.xy/.SearchActivity bnds=[0,520][480,616] (has extras) } 04-02 23:48:06.958: INFO/ActivityManager(2466): Starting activity: Intent { act=android.intent.action.SEARCH cmp=com.xy/.SearchActivity bnds=[0,0][480,96] (has extras) } 04-02 23:48:06.958: WARN/ActivityManager(2466): startActivity called from non-Activity context; forcing Intent.FLAG_ACTIVITY_NEW_TASK for: Intent { act=android.intent.action.SEARCH cmp=com.xy/.SearchActivity bnds=[0,0][480,96] (has extras) } 04-02 23:48:07.087: INFO/notification(5028): onStartCmd: received start id 2: Intent { cmp=com.xy/.NotificationService } 04-02 23:48:07.310: INFO/notification(5028): onStartCmd: received start id 3: Intent { cmp=com.xy/.NotificationService } 04-02 23:48:07.392: INFO/ActivityManager(2466): Displayed activity com.xy/.SearchActivity: 462 ms (total 462 ms) 04-02 23:48:07.392: INFO/ActivityManager(2466): Displayed activity com.xy/.SearchActivity: 318 ms (total 318 ms) Why are they started twice? There are two identical questions on stackoverflow: here and here. But they do not explain what the initial issue could be and they do not work for me. E.g. changing to launchMode singleTop is not appropriated for me and it should work without changing launchMode according to the official docs (see Invoking the search dialog). Nevertheless I also tried to add the following flags to notificationIntent Intent.FLAG_ACTIVITY_CLEAR_TOP | PendingIntent.FLAG_UPDATE_CURRENT but the problem remains the same.

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  • How to change the color of a indefinite ProgressBar?

    - by Janusz
    I have a progressbar with the following style: style="?android:attr/android:progressBarStyleSmall" Sadly the bar is nearly white and in my case displayed on a white background. The progressbar is nearly invisible because of that. How can I change the color of the progressbar? A darker grey would be great.

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  • JQuery - Check when image is loaded?

    - by JasonS
    Hi, I am having a bit of trouble working out when an image has been loaded. I have been told that the following function will work but it isn't doing anything. $("#photos img:first").load(function (){ alert("Image loaded!"); }); There are no error's in my code. Everything else in my script works great. My HTML looks like this. <div id="photos"> <img src="../sample1.jpg" style="background-color:#000033" width="1" height="1" alt="Frog!"/> <img src="../sample2.jpg" style="background-color:#999999" width="1" height="1" alt="Zooey!"/> </div> Do I have the wrong JQuery function? It should also be noted that the visibility is set to hidden. However even when visible there is no alert. Any ideas?

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  • Unable to download trace file

    - by Firas Assaad
    Whenever I switch to DDMS view and start method profiling, I get the following error message when I stop profiling: Method Profiling Error: Unable to download trace file: Remote object doesn't exist! This only happens with 1.6 and 2.1 AVDs, 2.2 and 2.3 work fine. I've been having this problem ever since the latest update to the Eclipse Android plugin. I'm using Eclipse 3.5.2 on Ubuntu 10.04 with Android Development Toolkit version 8.0.0.v201011171904-77661. Let me know if you need any more information.

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  • Looking for a central image database and tagging system for a group of users

    - by jstarek
    I'm doing IT support for a small volunteer organisation who needs to centrally store and organize around 2500 photos. Can anyone here recommend a database or similar system which matches the following criteria: Intuitive to use for users with little computer experience Multi-user support, ideally with integration in our existing LDAP user directory Should have a web-interface Not a hosted solution like Picasa (because we have a rather slow internet connection with very slow upload) Should allow tagging of images, sorting by various criteria and storing copyright information If there are native GNOME and/or Windows clients for the tool, that would be a great benefit. Many thanks in advance!

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  • CSS3 image rotation and reposition to fit in div

    - by blid
    I'll start with JS Fiddle: http://jsfiddle.net/zy2xy/4/ <div id="page" style="position: relative; background: #ccc; width: 500px; height: 600px;"> <div id="container" style="top: 50px; left: 100px; width: 200px; height: 200px; position: absolute; background: #fff;"> <img src="http://lorempixel.com/200/100/"> </div> </div>????????? I've got a whole page div #page, and inside that another div #container positioned absolute against #page. What I want to achieve, is to rotate image inside it 90deg, 180deg or 270deg but always move that image to top left corner of #container. I tried a little bit with transform-origin but I couldn't find any solution.

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  • paintComponent on JPanel, image flashes and then disappears

    - by mark
    I have a JApplet (MainClass extends JApplet), a JPanel (ChartWindow extends JPanel) and a Grafico class. The problem is that the Grafico class instance has 2 JPanel that should show 2 images (1 for each panel) but the images are shown and after a little while they disappears: instead of them i get a gray background (like an empty JPanel). This happens for every repaint() call (that are made in the ChartWindow class) the MainClass init() contains chartwindow=new ChartWindow(); add(chartwindow) chartwindow has a Grafico instance. it's the ChartWindow's paintComponent (override) paintComponent(Graphics g) { super.paintComponent(g); Image immagineGrafico=createImage(grafico.pannelloGrafico.getWidth() ,grafico.pannelloGrafico.getHeight()); Image immagineVolumi=createImage(grafico.pannelloVolumi.getWidth() ,grafico.pannelloVolumi.getHeight()); Graphics2D imgGrafico=(Graphics2D)immagineGrafico.getGraphics(); Graphics2D imgVolumi=(Graphics2D)immagineVolumi.getGraphics(); grafico.draw(imgGrafico,imgVolumi,mouseX,mouseY); ((Graphics2D)grafico.pannelloGrafico.getGraphics()).drawImage(immagineGrafico,0,0,this); ((Graphics2D)grafico.pannelloVolumi.getGraphics()).drawImage(immagineVolumi,0,0,this); } grafico's JPanels are added this way in the ChartWindow's constructor grafico=new Grafico() ................ add(grafico.pannelloGrafico); add(grafico.pannelloVolumi); Tell me if you need more information, thank you very much :-)

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  • Change the source of an image by clicking a thumbnail (without jQuery preferably using UpdatePanel)

    - by Batu
    For example, i have this ImageViewer.ascx UserControl: <div class="ImageTumbnails"> <asp:ListView ID="ImageList" runat="server" ItemPlaceholderID="ItemContainer"> <LayoutTemplate> <asp:PlaceHolder ID="ItemContainer" runat="server" /> </LayoutTemplate> <ItemTemplate> <asp:HyperLink runat="server" NavigateUrl='<%# Link.ToProductImage(Eval("ImageFile").ToString())%>'> <asp:Image runat="server" ImageUrl='<%# Link.ToThumbnail(Eval("ImageFile").ToString()) %>' /> </asp:HyperLink> </ItemTemplate> </asp:ListView> </div> <div class="ImageBig"> <asp:Image ID="ProductImageBig" runat="server" ImageUrl="" /> </div> When the thumbnail is clicked it will change the source of ProductImageBig with its hyperlink target. How can i achieve this using UpdatePanel ? ( Or will i be able to )

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  • I am trying to add a link on an Image

    - by firemonkey
    Hi, I am trying to add a link to an image using ActionScript. I do not see the link no matter what. Below is my code, Can you please suggest what am I doing wrong. <?xml version="1.0" encoding="utf-8"?> <mx:Application creationComplete="application1_creationCompleteHandler(event)" xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" minWidth="955" minHeight="600"> <mx:Script> <![CDATA[ import mx.controls.Button; import mx.controls.Image; import mx.events.FlexEvent; protected function application1_creationCompleteHandler(event:FlexEvent):void { var but:Button = new Button(); but.label = "BUT"; uic.addChild(but); var dollLoader:Loader=new Loader(); dollLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, dollCompleteHandler); var dollRequest:URLRequest = new URLRequest("http://www.google.com/intl/en_ALL/images/logo.gif"); dollLoader.load(dollRequest); uic.addChild(dollLoader); } private function dollCompleteHandler(event:Event):void { } ]]> </mx:Script> <mx:UIComponent id="uic" width="100%" height="100%"> </mx:UIComponent> </mx:Application>

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  • Jquery cycle plugin and image tag from code behind

    - by Geetha
    Hi All, I am using cycle plugin to show images. I am binding the html code for image from code behind. Problem: Images are not getting displayed. If i hard coded the image tag it is working. Code: $(window).load(function() { $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", data: "{}", url: "Default.aspx/GetImage", dataType: "json", success: function(data) { alert(data.d); $("#sample").html(data.d); $('#sample').cycle({ fx: 'fade', continuous: true, speed: 7500, timeout: 55000, pause: 1, sync: 1 }); } }); }); Data.d will give: <img src="Images/Frontbanner/s0.jpg" width="664" height="428" border="0" /> <img src="Images/Frontbanner/s111.jpg" width="664" height="428" border="0" /> <img src="Images/Frontbanner/s112.jpg" width="664" height="428" border="0" /> <img src="Images/Frontbanner/s113.jpg" width="664" height="428" border="0" /> <img src="Images/Frontbanner/s114.jpg" width="664" height="428" border="0" /> <img src="Images/Frontbanner/s115.jpg" width="664" height="428" border="0" /> <img src="Images/Frontbanner/s116.jpg" width="664" height="428" border="0" />

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  • Where to start game programming for Android

    - by Marthin
    Hi, I'm new to game programming. But I'v got an ide for what I think would be a fun game for the Android platform. My question is, where do I start? Anyone got some good sites to recommend or perhaps a book or two. I'v got medium skills when it come to programming but i'v got a masters of science degree in computer engineering so i'm not totally unfamiliar with algorithms and stuff. Thx for any help! /Marthin

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