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• iOS and Infrared

  - by Mustafa

  Is it possible to communicate with an Infrared device (USB Infrared, TV, Mobile Phone, etc) using iOS (iPhone or iPad)? Well, i know it's possible, since there are many remote/universal remote applications in the AppStore. I basically want to know how? What are the limitations and requirements? What kind of additional hardware is required? If it's available in the market? Which protocols should i know about? Which iOS libraries can help me in the process. Can anyone point me in the right direction. Thanks.

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• UIWebView: Media Player Rotates View Controller

  - by RileyE

  I'm encountering an issue while using a webview. My app is currently a portrait application, but when a media player loads in a webview within my app, the user can rotate the player, which rotates my view controller as well. I know I can get a notification for when the player comes up and disappears, but is there a way to prevent it from rotating the controller in the first place? It doesn't seem like anyone has an answer. I have all of the standard "don't rotate unless if I tell you to" methods and plist values, but its still rotating. Its only when I load up a webview and the media player loads over it. If I rotate my device, the media player rotates along with it, which feels natural, but when I go back to the webview view controller, its rotated, which isn't good.

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• Whats the minimum iOS version which supports OpenGL ES2.0 ?

  - by Shireesh Agrawal

  Hi, I am not sure if the question even makes sense. I am writing an iPhone game which uses Opengl ES 2.0. I know that OpenGL ES 2.0 is supported on 3gs and higher. Is there a minimum requirement for iOS version too, like the device needs to have iOS 3.1.3 or higher? Or does it solely depend on the hardware? Thanks! -shireesh p.s. I tried to search on the net but havent found much, perhaps I am not using the right keywords

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• Problems persisting Core Data structures on iPhone/iPad

  - by Rivier

  I have an iPhone/iPad app using Core Data to keep my application data. Sometimes, even though I don't get any error messages, the data is not really saved so when the app starts anew, it's all gone. This problem seems to disappear after physically rebooting the device, but otherwise it's pretty random and hard to track. Has anyone seen a similar issue? Also, it seems to happen more often in the iPhone 1st generation, less so in the 3G/3GS, and seldom in the iPad. Very strange...

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• Autorun when USB stick is inserted

  - by user313724

  Hi, I'm trying to prompt users to run my installer, whenever they plug in my USB device. I'd like this to work on all (most?) Windows OSes. I have an autorun.inf file in the root dir of my USB key with these contents: [Autorun] ShellExecute=setup.exe Icon=setup.exe UseAutoplay=1 It doesn't seem to do very much at all. Well... it does change the icon properly, but nothing gets executed and the user doesn't get any prompts. I've tried it on both Windows 7 and Windows Server 2003. Any ideas?

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• RS 232 Communication in ASP.NET 3.5?

  - by Pandiya Chendur

  using ASP.NET 3.5 WebForm using C# 3.0, is it possible to setup a RS 232 communication with a device? I need the WebForm to be able to read and write data to the serial port. I would appreciate if there are some good examples, thanks. I understand that under Components, there is a SerialPort .NET Component, but it seems to me that it can only be used in a Windows application (WinForm). Or the only solution is to rely on the ActiveComport Serial Port Toolkit, as from http://www.activexperts.com/activcomport/howto/aspnetc/ ?

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• asynchronous method executing

  - by alexeyndru

  I have a delegate method with the following tasks: get something from the internet (ex: some image from a web site); process that image in a certain way; display the result in a subview ; getting the image takes some time, depending on the network's speed so the result of its processing is displayed in the subview after that little while. my problem: during the time between getting the image and showing the result the device looks unresponsive. any attempt to put some spinner, or any other method which is called inside this main procedure has no effect until the result is processed. how should I change this behaviour? I would like to put a big spinner during that waiting time. thank you.

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• Blackberry Code

  - by Haoest

  I have having difficulties protecting my blackberry application persistent data with ControlledAccess object. According to http://www.blackberry.com/developers/docs/4.5.0api/net/rim/device/api/system/PersistentObject.html, I need a PersistentObject, CodeSignKey, and ControlledAccess objects to work. I have everything except one piece: CodeSignKey codeSigningKey = CodeSigningKey.get( "ACME" ); here, I don't know what to replace for "ACME". Is this the PIN code I chose as I filled out the Code Sign Key? Is it my package name, output file name? The Blackberry API documentation doesn't seem to say anything about this particularly important parameter. Help please, thanks.

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• While saving a PNG image using NSData writetofile saves corrupted data on the iphone disk

  - by jAmi

  I have a number of images (PNG,GIF and JPG) in my Application Resource Bundle. I want some images to be saved in my Documents Directory so i use : imgPath=[documentsDirectoryPath stringByAppendingPathComponent:@"myImage.png"]; if (![fileMgr fileExistsAtPath:imgPath]) { [[fileMgr contentsAtPath:[[NSBundle mainBundle] pathForResource:@"myImage"ofType:@"png"]] writeToFile:imgPath atomically:NO]; } This saves an Image file on my desired Path but this file has an Extra 300 bytes (of maybe junk data) in it which results in a corrupted image... Am i doing something wrong here? This works in the simulator but on the real device the image has some extra 300 bytes. Also a GIF image gets copied nicely and works but this problem occurs for PNG image.

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• Predicting performance for an iPhone/iPod Touch App

  - by Avizz

  I don't have an iPhone Developer Program Account yet and will be getting one in the next couple of days. Can instruments be used with the simulator to give a rough estimate on how well my app may perform? Using instruments I checked and fixed all the leaks it was detecting, and it appears that my memory usage maxes out at about 5.77mb. Is there any other tests I could perform with instruments to judge how well my app would perform? I realize there is no way other then the actual device to get a definite answer, it would be nice to get an estimate.

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• Having issue with OpenGL 1.0 for HP slate 7

  - by Roy Coder

  I have issue with HP slate when i am trying to draw Line in OpenGL Draw method. But working in other devices. In Hp Slate Green line not drawn properly as like in another device. My Code is: gl.glPushMatrix(); gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); gl.glVertexPointer(2, GL10.GL_FLOAT, 0, vertexFloatBuffer); gl.glColorMask(true, true, true, true); gl.glDepthMask(true); gl.glLineWidth(8.0f); setColor(gl); gl.glDrawArrays(GL10.GL_LINES, 0, fPoints.length / 2); gl.glDisableClientState(GL10.GL_VERTEX_ARRAY); gl.glPopMatrix(); Suggest me at which place i am wrong or missing something? UpdateImage

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• Want to know about the best framework available for my app

  - by vamyip

  Hello, I am trying to design a new application which basically aims at providing biometric authentication services. What I want to do is that the app will present the user with an interface where the user can get his eye scanned for authentication. The most important feature I want to incorporate is that the user need not have a webcam, the app must be able to read the eye from the display device i.e. CRT or LCD screen itself. I want info about the best framework available for this. Once successfully tested, I am planning to provide it as a webservice. Any one who will help me will get a royalty from my income.

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• J2ME's extra annoying HTTP permission prompt

  - by Hans Malherbe

  Some phones only prompt the user for permission the first time a connection is made. Others pop up the permission prompt whenever the MIDlet attempts to make a HTTP connection! What are the options if we want to suppress the prompt? Can we sign the JAR using only one CA (Certificate Authority) and have it work on all devices? Do we have to pay for a signature on every release? Is it an option to create our own CA certificate and tell our customers to install it on there device? Alternatively, it seems that plain socket connections do not suffer so. Is there a free implementation of HTTP on top of TCP for J2ME?

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• class not found when running

  - by captfrank

  I'm getting "could not find class" error when I run my app. Understand that copulation and execution path different but I followed the recommendations of another question to create a sub dir under my project of lib and put the jar there but still no luck. using Eclipse and it is when I run on a device from eclipse (unable to get the broadcast events I want to trigger this code from simulator, i.e. wifi and blue-tooth). Any way to look at the apk to see what's in it like this jar file? looking around did not see anything.

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• Download data in background with iOS4

  - by Sagar

  As per the latest update of Kindle V2.5, it has support of "continue downloading books while the app is in the background on iOS 4 devices". How is it possible to download content in background? As per the iOS multitasking documentation, only audio, voip & location updates are possible in background. And I've also maken sure that NSURLConnection doesn't download new data work while app goes background. Then how's it possible with Kindle app? Edit: I haven't checked Kindle App in iOS4 multitasking enabled device. So if anyone let me (& community) know what exactly Kindle app does to download, that would be very much helpful.

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• Download databasename.bak file

  - by Jordon

  I have downloaded databasename.bak file from my hosting company, when i tried to restore that DB file in SQL server 2008 it is keep on giving me following error. The media family on device 'C:\go4sharepoint_1384_8481.bak' is incorrectly formed. SQL Server cannot process this media family. RESTORE HEADERONLY is terminating abnormally. (Microsoft SQL Server, Error: 3241) According to this error and from following link http://www.sqlcoffee.com/Troubleshooting047.htm It is clear that either file i am downloading is corrupt or it is getting corrupted on the way? Any idea, why I am keep on receiving this error? I tried almost all ways but unable to fix this problem, please help me.

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• Adding icon to gcc executable and opening in terminal.

  - by sfactor

  I made a program to connect to a device via Bluetooth and send the data to the web using pure C in gcc. I won't be able to implement any GUI portion in the code right now but I need to deploy it to test users for testing. I want to have the executable with an icon so that a user can click on the executable and the program starts in the terminal. How do I add an icon to the executable and start the program in the terminal? Sorry I failed to mention before that its in Ubuntu Linux

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• C#/WPF FileSystemWatcher on every extension on every path

  - by BlueMan

  I need FileSystemWatcher, that can observing same specific paths, and specific extensions. But the paths could by dozens, hundreds or maybe thousand (hope not :P), the same with extensions. The paths and ext are added by user. Creating hundreds of FileSystemWatcher it's not good idea, isn't it? So - how to do it? Is it possible to watch/observing every device (HDDs, SD flash, pendrives, etc.)? Will it be efficient? I don't think so... . Every changing Windows log file, scanning file by antyvirus program - it could realy slow down my program with SystemWatcher :(

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• fscommand2 support in Actionscript 3.0 ?

  - by Andhravaala

  Hi All, I am very new to Action Script. I am using Flash Professional CS5 with ActionScript 3.0. The problem is, When I am trying use fscommand2 function, Compiler throwing an error saying: Scene 1, Layer 'Layer 1', Frame 1, Line 7 1180: Call to a possibly undefined method fscommand2. But, I am able to use fscommand. But, it will not fulfill my requirement to get Device(Mobile) properties like DeviceID etc. Please help me in using fscommand2 or any equivalent API support in ActionScript 3.0. Thanks in advance.

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• How to view existing data in Core Data?

  - by mshsayem

  Well, may be this question is silly, but I couldn't find a way (except programmatically). I built a project (for iPhone OS 3.0) which uses Core Data. The xcdatamodel file shows the schema description, but I want to see the data in tabular form (like the management studio for mssql server or phpmyadmin for mysql). Is there any way (except coding)? What is that? Also, which file (in disk/device) those data are stored into? [ I built the tutorial (from apple) on Core Data, named Locations. They used this line somewhere in the code: NSURL *storeUrl = [NSURL fileURLWithPath: [[self applicationDocumentsDirectory] stringByAppendingPathComponent: @"Locations.sqlite"]]; But, I did not see any "xxxxx.sqlite" file in project location (nor in the disk).]

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• Buttons, hover, text and transitions on pure css3

  - by Mascote Ricardo

  I bought a responsive html5 template to create a website for my band. But I miss a page of tour dates, and would create a unique content, simple and quick to load on any device. I have the idea ready, something like buttons (months) to change on hover and when clicked, shows the dates and cities, all with transitions and fadein / fadeout. (pure css3) to better explain and make me understand, follows an image I created in photoshop. http://img51.imageshack.us/img51/1542/l17u.jpg can someone give me a help, idea or tag to search the web, I thank you too!

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• How to get Drive Letter Using WMI

  - by new

  i get the vid and pid of the usb devices plugged into my system using WMI. Now i want to get the drive letter corresponding to the device vid and pid i retrievd. code hres = pSvc->ExecQuery( bstr_t("WQL"), bstr_t("SELECT * FROM Win32_USBControllerDevice"), WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumerator); if (FAILED(pclsObj->Get(L"Dependent", 0, &vtProp, 0, 0))) { cout<<"The specified property is not found."<<endl; } else { wcout <<vtProp.bstrVal << endl; } i get like below \NJ96\root\cimv2:Win32_PnPEntity.DeviceID="USB\VID_1A8D&PID_1000\35809402 0874450" how can i map DRIVE LETTER to my above output using the WMI please help me out

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• Why are the default UI controls in my iPhone app blurred?

  - by Tom H

  Why would the default iPhone interface elements, specifically the UISwitch (unmodified) and a UISegmentedControl appear slightly blurred? I have not changed them or called any private APIs. This blurring occurs when I run it both in the simulator and when I load it on my iPod Touch, so I don't think it's a one off drawing glitch. These elements were created via some code (initWithFrame:) not in interface builder. Here is a screenshot of the blurring in the simulator: http://drp.ly/14rS6a It looks similar on the actual device. Thanks for your help

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• Win CE 6.0 client using WCF Services - Reduce Bandwidth

  - by Sean

  We have a Win CE 6.0 device that is required to consume services that will be provided using WCF. We are attempting to reduce bandwidth usage as much as possible and with a simple test we have found that using UDP instead of HTTP saved significant data usage. I understand there are limitations regarding WCF on .NET Compact Framework 3.5 devices and was curious what people thought would be the appropriate way forward. Would it make sense to develop a custom UDP binding, and would that work for both sides? Any feedback would be appreciated. Thanks.

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• Link to pdf within app

  - by Thijs

  I've got an iOS app that at one point opens a link to a website in a webview. These links are kept in a plist file (so it is easy to maintain them as the app evolves). What I want to do next is to also link to PDF's (or any picture of text file format, of even a html format, this is flexible) that are kept within the app. And I would like to do this as much as possible from within the existing app structure. So, is it possible to create a link that can be put in the plist as a web-link, but instead opens a file on the device itself (possibly in the webview)? And how would I go about that? Any ideas? Thanx in advance for your help!

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