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  • Does use of simple shaders improve performace/battery life?

    - by Miro
    I'm making OpenGL game for Android. Till now i've used only fixed function pipeline, but i'm rendering simple things. Fixed function pipeline includes a lot of stuff i don't need. So i'm thinking about implementing shaders in my game to simplify OpenGL pipeline if it can make better performance. Better performance = better battery life, unless fps is limited by software limit, not hardware power.

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  • Create an ad-hoc connection that looks like a wifi connection from a router

    - by James
    I have a Vizio tablet (running a modified version of Android 2.3.2) which, for some reason or another, refuses to list Windows ad-hoc wifi connections on it's wifi connection screen. It can connect to wifi networks served from a normal router, but the wireless bit of my home router is broken, so I'd like to share the internet connection through my laptop's wifi card until the new router arrives. Is it possible to create an ad-hoc network in Ubuntu that looks like a normal wireless network to my tablet?

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  • Hiding a button on pushed view and showing it when back to list view

    - by torr
    When I load my list view it has several blog posts and a refresh button on the top left. If I tap on a list item a view is pushed with the contents of that specific post. When this view is pushed in, the refresh button is hidden. But when I tap 'Back' to the parent list view, I'd like the refresh button to show (un-hide) - but it remains hidden. Any idea how to make this work? This is my View: Ext.require(['Ext.data.Store', 'MyApp.model.StreamModel'], function() { Ext.define('MyApp.view.HomeView', { extend: 'Ext.navigation.View', xtype: 'homepanel', requires: [ 'Ext.dataview.List', ], config: { title: 'Home', iconCls: 'home', styleHtmlContent: true, navigationBar: { items: [ { xtype: 'button', iconMask: true, iconCls: 'refresh', align: 'left', action: 'refreshButton', id: 'refreshButtonId' } ] }, items: { title: 'My', xtype: 'list', itemTpl: [ '<div class="post">', ... '</div>' ].join(''), store: new Ext.data.Store({ model: 'MyApp.model.StreamModel', autoLoad: true, storeId: 'stream' }), } } }); }); and my Controller: Ext.define('MyApp.controller.SingleController', { extend: 'Ext.app.Controller', config: { refs: { stream: 'homepanel' }, control: { 'homepanel list': { itemtap: 'showPost' } } }, showPost: function(list, index, element, record) { this.getStream().push({ xtype: 'panel', html: [ '<div class="post">', '</div>' ].join(''), scrollable: 'vertical', styleHtmlContent: true, }); Ext.getCmp('refreshButtonId').hide(); } });

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  • What points to be used for Drawing Hexagonal Shaped Button

    - by Durga
    Using below code I am able to draw arrow shaped button(shown below) ,but I want to draw hexagone(shown below as result image) ,so that I can use png image of size 175x154 as button image ,What Points I need to use to draw this ? and i need to to draw 6 such buttons ,how do i achieve this ? private void Parent_Load(object sender, EventArgs e) { // Define the points in the polygonal path. Point[] pts = { new Point( 20, 60), new Point(140, 60), new Point(140, 20), new Point(220, 100), new Point(140, 180), new Point(140, 140), new Point( 20, 140) }; // Make the GraphicsPath. GraphicsPath polygon_path = new GraphicsPath(FillMode.Winding); polygon_path.AddPolygon(pts); // Convert the GraphicsPath into a Region. Region polygon_region = new Region(polygon_path); // Constrain the button to the region. btnExam.Region = polygon_region; // Make the button big enough to hold the whole region. btnExam.SetBounds( btnExam.Location.X, btnExam.Location.Y, pts[3].X + 5, pts[4].Y + 5); }

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  • Android - Transforming widgets within transformed widgets and the resulting usability issues.

    - by Ben Rose
    Hello. I'm new to Android application development and I'm currently experimenting with various UI ideas. In the image below, you can see a vertically scrolling list of horizontally scrolling galleries (and also textviews as you can see). I'm also doing some matrix and camera transformations which I will come to in a minute. For the background of the list elements, I use green. Blue is the background of the galleries, and red is the background for the images. These are just for my benefit of learning. The galleries being used are extended classes where I overrode the drawChild method to perform a canvas scale operation in order for the image closest to the center (width) to be larger than the others. The list view going vertically, I overrode the drawChild method and used the camera rotations from lack of depth dimension in the canvas functionality. The items in the list are scaled down and rotated relative to their position's proximity to the center (height). I understood that scrolling and clicking would not necessarily follow along with the image transforms, but it appears as though the parent Gallery class's drawing is constrained to the original coordinates as well (see photo below). I would love to hear any insight any of you have regarding how I can change the coordinates of the galleries in what is rendered via gallery scroll and the touch responsiveness of said gallery. Images in the gallery are not same dimensions, so don't let that throw you in looking at the image below Thanks in advance! Ben link to image (could not embed) -- Update: I was using my test application UI and noticed that when I got the UI to the point of the linked image and then I touched the top portion of the next row in the list, the gallery updated to display the proper representation. So, I added a call to clearFocus() in the drawChild method and that resulted in more accurate drawing. It does seem a tad slower, and since I'm on the Incredible, I'm worried it is a bloated solution. In any event, I would still appreciate any thoughts you have regarding the best way to have the views display properly and how to translate the touch events in the gallery's new displayed area to its touchable coordinates so that scrolling on the actual images works when the gallery has moved. Thanks!

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  • Is the STL efficient enough for mobile devices?

    - by mx2
    When it comes to mobile game development on iOS and Android NDK, some developers write their own C++ containers, while others claim that STL is more than adequate for mobile game development (For example, the author of iPhone 3D Programming uses STL rather than Objective-C in his examples. His defense is that STL is no slower than Objective-C). Then there are also mobile developers who abandon C++ entirely and develop games entirely (or mostly) in the C language (C89/C90). What are the benefits and drawbacks of each approach?

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  • Cloud service and IM protocol advice, for a backend to group chat mobile app

    - by Jonathan
    Overview I’m going to develop an app on Android and iOS. It will allow users to set up group ‘chat rooms’ and talk on chat rooms set up by other users. The service needs to be highly scalable, such that it could accommodate a massive increase in users overnight (we can only dream). Chat requirements The chat protocol used should be flexible: it should allow me to determine who can view/post on ‘chat rooms’ based on certain other factors, as determined by the first poster/creator of the particular ‘chat room’. It should also allow for users to simply install the app and begin using the service, after only providing a simple nickname (which could be changed later). Chat protocol plans Having looked around I think the XMPP protocol is the best candidate. In particular the Multi-user chat extension looks like what I’ll need. Would this be most suited to my requirements, or do you know another potential solution? Cloud service I have been deciding between Amazon Web Services, Google App Engine and Windows Azure. I’m coming to the conclusion that Azure will be best, as it is easier to manage than AWS (ease of scalability will be a key factor in the design), I think it may be less restricted than GAE, plus Azure will soon have toolkits to allow easy interfacing with both Android and iOS phones. Is this the decision you would have made, or would you recommend/look into other cloud services? General project philosophy I have only recently started looking into this project’s feasibility, and am no expert on any of its aspects. So wherever possible I will leave the actual implementations to experts, i.e. choosing a higher-level cloud service, using a well-documented plugin of a, proven reliable, group chat protocol etc. My background I have some programming knowledge from a computer science degree. Main languages I’ve used have been Java and Python, but I don’t want this to affect design decisions for the project. The most appropriate languages for the task should be used, i.e. I don’t mind learning a lot of new skills (my current programming levels are relatively basic anyway). Thank you Thanks for reading, and any advice you have about any aspect would be greatly appreciated :-)

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  • Unable to access any ubuntu shares from android/windows clients

    - by dan
    I am running Ubuntu 11.04, and cant seem to access any of my shares. Here is the output from testparm-s : Load smb config files from /etc/samba/smb.conf rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) Processing section "[printers]" Processing section "[CanonMG2100AIO]" Processing section "[FreeAgent Drive]" Loaded services file OK. WARNING: You have some share names that are longer than 12 characters. These may not be accessible to some older clients. (Eg. Windows9x, WindowsMe, and smbclient prior to Samba 3.0.) Server role: ROLE_STANDALONE [global] server string = %h server (Samba, Ubuntu) encrypt passwords = No obey pam restrictions = Yes pam password change = Yes passwd program = /usr/bin/passwd %u passwd chat = Enter\snew\s\spassword:* %n\n Retype\snew\s\spassword:* %n\n password\supdated\ssuccessfully . username map = /etc/samba/smbusers unix password sync = Yes syslog = 0 log file = /var/log/samba/log.%m max log size = 1000 name resolve order = wins lmhosts host bcast dns proxy = No wins support = Yes usershare allow guests = Yes panic action = /usr/share/samba/panic-action %d [printers] comment = All Printers path = /var/spool/samba create mask = 0700 guest ok = Yes printable = Yes browseable = No [CanonMG2100AIO] comment = Printer Drivers path = /var/lib/samba/printers read only = No guest ok = Yes [FreeAgent Drive] path = /media/FreeAgent Drive read only = No guest ok = Yes smbtree: Server requested plaintext password but 'client plaintext auth' is disabled anonymous failed session setup with NT_STATUS_INVALID_PARAMETER Server requested plaintext password but 'client plaintext auth' is disabled anonymous failed session setup with NT_STATUS_INVALID_PARAMETER and hostname: dekstop I know the spelling of desktop is incorrect. it was a duh moment. Any help would be greatly appreciated.

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  • how to pause and stop a changing ImageView

    - by user270811
    hi, i have an ImageView in which the picture switches every 5s, i am trying to add a pause and resume button that can stop and restart the action. i am using a Handler, Runnable, and postDelay() for image switch, and i put the code on onResume. i am thinking about using wait and notify for the pause and resume, but that would mean creating an extra thread. so far for the thread, i have this: class RecipeDisplayThread extends Thread { boolean pleaseWait = false; // This method is called when the thread runs public void run() { while (true) { // Do work // Check if should wait synchronized (this) { while (pleaseWait) { try { wait(); } catch (Exception e) { } } } // Do work } } } and in the main activity's onCreate(): Button pauseButton = (Button) findViewById(R.id.pause); pauseButton.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { while (true) { synchronized (thread) { thread.pleaseWait = true; } } } }); Button resumeButton = (Button) findViewById(R.id.resume); resumeButton.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { while (true) { // Resume the thread synchronized (thread) { thread.pleaseWait = false; thread.notify(); } } } }); the pause button seems to work, but then after that i can't press any other button, such as the resume button. thanks.

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  • Get a button in itemscontrol and add eventhandler to its click event

    - by rockdale
    I have a custom control shows a customer info with an itemscontrol shows this customer's invoices. within the itemscontrol, I have button, in my code behind I want to wire the button's click event to my host window, but do now know how. //public event RoutedEventHandler ViewDetailClick; public static readonly RoutedEvent ButtonViewClickEvent = EventManager.RegisterRoutedEvent( "ButtonViewClick", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(custitem)); public event RoutedEventHandler ButtonViewClick { add { AddHandler(ButtonViewClickEvent, value); } remove {RemoveHandler(ButtonViewClickEvent, value);} } public override void OnApplyTemplate() { base.OnApplyTemplate(); this.lstInv = GetTemplateChild("lstInv") as ItemsControl; lstInv.ItemContainerGenerator.StatusChanged += new EventHandler(ItemContainerGenerator_StatusChanged); } private void ItemContainerGenerator_StatusChanged(object sender, EventArgs e) { if (lstInv.ItemContainerGenerator.Status == System.Windows.Controls.Primitives.GeneratorStatus.ContainersGenerated) { lstInv.ItemContainerGenerator.StatusChanged -= ItemContainerGenerator_StatusChanged; for (int i = 0; i < this.lstInv.Items.Count; i++) { ContentPresenter c = lstInv.ItemContainerGenerator.ContainerFromItem(lstInv.Items[i]) as ContentPresenter; DataTemplate dt = c.ContentTemplate; Grid grd = dt.LoadContent() as Grid; Button btnView = grd.FindName("btnView") as Button; if (btnView != null) { btnView.Click += new RoutedEventHandler(ButtonView_Click); //btnView.Click+= delegate(object senderObj, RoutedEventArgs eArg) //{ // if (this.ViewDetailClick != null) // { // this.ViewDetailClick(this, eArg); // } //}; } } private void ButtonView_Click(object sender, RoutedEventArgs e) { MessageBox.Show("clicked"); //e.RoutedEvent = ButtonViewClickEvent; //e.Source = sender; //RaiseEvent(e); } I succeed getting the btnView, then attach the click event, but the click event never get fired. Thanks in advance -rockdale

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  • Week in Geek: Malware for Android has Increased 472% since July

    - by Asian Angel
    This week we learned how to safely eject your USB devices from the desktop context menu, make the Kindle Fire Silk Browser *actually* fast, “disable Windows startup programs, use DNS names on your home network, & restore a vintage keyboard”, print or save a directory listing to a file, make your computer press a key every X seconds, and more. How to Make the Kindle Fire Silk Browser *Actually* Fast! Amazon’s New Kindle Fire Tablet: the How-To Geek Review HTG Explains: How Hackers Take Over Web Sites with SQL Injection / DDoS

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  • i'm confused what skill shall i learn at my internship

    - by iyad al aqel
    i'm a software Engineering student having my internship this summer. the company asked me to choose one or two skills that i want to master and they will coordinate me and give me small tasks to medium projects to master it . Now , i'm confused shall i continue with web development and learn .NET given that i've been working with PHP for 2 years OR entering the mobile development world and learn Android. any advice guys ?

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  • Extract the vb code associated with a macro attached to an Action button in PowerPoint

    - by Patricker
    I have about 25 PowerPoint presentations, each with at least 45 slides. On each slide is a question with four possible answers and a help button which provides a hint relevant to the question. Each of the answers and the help button is a PowerPoint Action button that launches a macro. I am attempting to migrate all the questions/answers/hints into a SQL Database. I've worked with Office.Interop before when working with Excel and Word and I have plenty of SQL DB experience, so I don't foresee any issues with actually extracting the text portion of the question and answer and putting it into the db. What I have no idea how to do is given an object on a slide - get the action button info - Get the macro name - and finally get the macro's vb code. From there I can figure out how to parse out which is the correct answer and what the text of the hint is. Any help/ideas would be greatly appreciated. The guy I'm doing this for said he is willing to do it by hand... but that would take a while.

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  • How to send HTML email

    - by Orsol
    Hi, i found a way to send plain text email using intent: final Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND); emailIntent.setType("text/plain"); emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[]{"[email protected]"}); emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subject"); emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Test"); But I need to send HTML formatted text. Trying to setType("text/html") doesn't work.

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  • No Sync of Files in Android U1 folder

    - by Oldbwl
    My Desktop (Ubuntu 12.10) and Laptop (Win 7) happily sync files. The Ubuntu One folders are perfectly in sync. I have an Asus Transformer with the Ubuntu One app installed. I can read files from the cloud, and they download to a U1 folder. If I edit the files in the Asus (say a sheet in Kingsoft) it appears they never go back to the cloud unless I physically select the file to be uploaded. Is this correct?

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  • Hiding a Bar button item in the view

    - by devb0yax
    How can you able to hide the (done) bar button item in a view? Basically, I have a view controller added with navigation bar (in IB) then, I also added a bar button item into the nav bar. I just want initially the (done) bar button item is hidden.. when input is in the text view the (done) button is already visible. Any idea on this implementation on a view controller? Here's my sample code: @interface MyTextViewViewController : UIViewController <UITextViewDelegate> { UITextView *m_textView; UIBarButtonItem *doneBarButtonItem; } @property(nonatomic,retain) IBOutlet UITextView *m_textView; @property(nonatomic,retain) IBOutlet UIBarButtonItem *doneBarButtonItem; - (IBAction)saveAction:(id)sender; .m file: - (void)viewDidLoad { [super viewDidLoad]; doneBarButtonItem.hidden = YES; --> compile error!!! } - (void)textViewDidBeginEditing:(UITextView *)textView { doneBarButtonItem.hidden = NO; --> compile error!!! } - (IBAction)saveAction:(id)sender { doneBarButtonItem.hidden = YES; --> compile error!!! ... }

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  • Updating sprite location with controls

    - by iQue
    So ive got a character in a 2D game using surfaceView that I want to be able to move using a button(eventually a joystick), but my game crashes as soon as I try to move my sprite. This is my onTouch-method for my steering button: public void handleActionDown(int eventX, int eventY) { if (eventX >= (x - bitmap.getWidth() / 2) && (eventX <= (x + bitmap.getWidth()/2))) { if (eventY >= (y - bitmap.getHeight() / 2) && (y <= (y + bitmap.getHeight() / 2))) { setTouched(true); } else { setTouched(false); } } else { setTouched(false); } and if I try to put this in my update-method: public void update() { x += (speed.getXv() * speed.getxDirection()); y += (speed.getYv() * speed.getyDirection()); } the sprite moves on its own just fine, but as soon as I add: public void update() { if(steering.isTouched()){ x += (speed.getXv() * speed.getxDirection()); y += (speed.getYv() * speed.getyDirection()); } the game crashes. Does any1 know why this is or how to fix it? I cannot figure it out. Im using MotionEvent.ACTION_DOWN to check if the user if pressing the screen. }

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  • Should I Use Anchor, Button Or Form Submit For "Follow" Feature In Rails

    - by James
    I am developing an application in Rails 3 using a nosql database. I am trying to add a "Follow" feature similar to twitter or github. In terms of markup, I have determined that there are three ways to do this. 1) Use a regular anchor. (Github Uses This Method) <a href="/users/follow?target=Joe">Follow</a> 2) Use a button. (Twitter Uses This Method) <button href="/friendships/create/">Follow</button> 3) Use a form with a submit button. (Has some advantages for me, but I haven't see anyone do it yet.) <form method="post" id="connection_new" class="connection_new" action="/users/follow"> <input type="hidden" value="60d7b563355243796dd8496e17d36329" name="target" id="target"> <input type="submit" value="Follow" name="commit" id="connection_submit"> </form> Since I want to store the user_id in the database and not the username, options 1 and 2 will force me to do a database query to get the actual user_id, whereas option 3 will allow me to store the user_id in a hidden form field so that I don't have to do any database lookups. I can just get the id from the params hash on form submission. I have successfully got each of these methods working, but I would like to know what is the best way to do this. Which way is more semantic, secure, better for spiders, etc...? Is there a reason both twitter and github don't use forms to do this? Any guidance would be appreciated. I am leaning towards using the form method since then I don't have to query the db to get the id of the user, but I am worried that there must be a reason the big guys are just using anchors or buttons for this. I am a newb so go easy on me if I am totally missing something. Thanks!

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