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• Best method of achieving bi-directional communication between Apple iPad "clients" and a Windows Ser

  - by user361910

  We are currently starting to build a client-server system which will see 10 or more Apple iPad client devices communicating to a central Windows server over a wireless LAN. We wanted to some existing plumbing (.NET remoting/WCF/web services/etc) that would allow us to implement a reliable, secure solution without having to start at a low level (e.g. sockets) and recreate the wheel. One of the major requirements that complicates this scenario is that unlike a traditional web service, the windows server needs to be able to arbitrarily notify the clients whenever certain events occur -- so it is not a simple request/response scenario like the web. Initially, we were going to use Windows clients, so our plan was to use the full-duplex mode of .NET WCF over HTTP|TCP. But now using the iPad, we don't have any of the WCF infrastructure. So my question is: what is the best way to allow an iPad and a Windows server to (securely) communicate over a LAN, with each device able to initiate communication to the other? Am I stuck writing low-level socket code? Thanks!

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• CoreMidi _MIDINetworkNotificationContactsDidChange symbol not found

  - by Domestic Cat

  I'm getting the following error after a crash in an iPad app that uses CoreMIDI (The * are to blank out the app name): Dyld Error Message: Symbol not found: _MIDINetworkNotificationContactsDidChange Referenced from: /var/mobile/Applications/8F08B78E-929D-4C5A-9F02-08FD5743C17F/***.app/*** Expected in: /System/Library/Frameworks/CoreMIDI.framework/CoreMIDI in /var/mobile/Applications/8F08B78E-929D-4C5A-9F02-08FD5743C17F/***.app/*** Dyld Version: 179.4 When the app launches, I listen for MIDI Network Sessions using [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sessionDidChange:) name:MIDINetworkNotificationSessionDidChange object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sessionDidChange:) name:MIDINetworkNotificationContactsDidChange object:nil]; Which seems to be what is causing the crash. This is after I call session = [MIDINetworkSession defaultSession]; session.enabled = YES; session.connectionPolicy = MIDINetworkConnectionPolicy_Anyone; MIDIClientCreate(CFSTR("MidiManager"), midiNotifyProc, (void*)self, &midiClientRef); This kind of looks like CoreMIDI library has not been included in the build. Problem is, it IS included in the build as a required framework. (And the deployment target is set to 4.2). I can run the build fine on my iPad and have been testing extensively with other users' iPads also with no problems whatsoever. Also, this is an update to an existing app that has had several updates already with no problems. I just double checked my deployment build and the framework is definitely included, and I just installed that build onto my iPad (with a different provisioning profile from the store) and it works fine also. What could be happening? Could it be that Xcode just did a bad build for the one I sent to Apple, or am I missing something obvious? Could I change the MIDINetworkNotificationSessionDidChange notification symbol to a literal string (@"MIDINetworkNotificationSessionDidChange") to fix things for the mean time? Thanks for any help!

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• How To Rotate An MPMoviePlayerController

  - by Dwaine Bailey

  I am building an iPhone app that plays videos on demand from a web service. The videos play in an MPMoviePlayerController, and everything works fine on the iPhone device. However, when one loads up the iPhone application on an iPad, the videos play Portrait mode (with letterboxing on the top and bottom), instead of Landscape Left like they do on the iPhone. At first the videos were not appearing at all, however I fixed this by adding the MPMoviePlayerControllers view to the view that is creating it, as a subview, and then set it to play fullscreen. -- Edit To Original: I now have it playing on the iPad in all rotations. Is there any way to stop it rotating, and just have it play LandscapeLeft? Thanks, Dwaine

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• Grid view in iPhone SDK

  - by Jack

  Hi, I would like to create a grid view in my iPhone app similar to that shown in the iPad photos app. I know that the iPhone 3.2 SDK is under NDA, but is there a library or framework available for adding this kind of functionality (non-SDK). Ideally I would like to eventually develop an iPad version of the app, where the grid would be 3 items wide in portrait and 4 in landscape, however for the time being I would like 2 items wide in portrait and 3 wide in landscape. The only way I can think of doing this is by subclassing UITableView and having a custom cell that creates the 2 or 3 items. This however seems messy and I am sure that there is a better way. A typical item will have a picture, label and button - nothing too complicated. Thanks

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• Horizontal lines and PDF drawing on iPhone/iPad Quartz 2D

  - by aron

  I'm trying to display a PDF of music using the Quartz 2D calls: CGPDFDocumentGetPage and CGPDFPageGetDrawingTransform The problem is that some horizontal lines in the PDF get drawn thicker than others. The biggest problem is that I notice this in Preview on the Mac and on iPhone/iPad. Even when viewing this PDF in the iPhone/iPad mail, I get the same problem. Here is the example: http://aronnelson.com/problem/pdfproblem.jpg Note that the PDF on the left is preview, the PDF on the right is the same file but in Google Docs. See how clean the Google Docs version is? Is there any way to fix this problem? Would it help to draw the PDF larger and zoom down using a UIScrollView? Any help appreciated. I can't find much info re: this problem. Aron

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• UIScrollView issue with autorotation and content scaling

  - by boliva

  Hi, I'm building a new (autorotating) iPad app that consists mainly of a screen sized UIScrollView that contains an UIImageView for an image which is 5 times the iPad screen resolution while in portrait mode (3840x1024). What I haven't been able to accomplish is that whenever the device rotates (to whichever orientation) the imageView bounds and the scrollView contentSize asjusts the image for the new height (maintaining its aspect ratio), making the height of the image to always fit the device height for the given orientation (so in the particular case of this image, it would get shown as 2880x768). I tried different combinations of autoresizingMask and contentMode for the imageView but the closer I've been able to get is to effectively display the image at the desired size but with a white padding around it and into the scrollView content (to make up for the original orientation contentSize). I also tried recalculating the scrollView contentSize in the didRotate.../viewWillAnimate... rotation-related methods in my viewController class, with no avail. Best regards and thanks for your time

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• UISplitViewController, animating views

  - by Romeo Robles

  Hello, I'm trying to animate my detail view controller to transition with a page curl (up/down). I'm trying to achieve a similar effect as the Notes application on the iPad, this transition was also reproduced by CulturedCode in their Things application for iPad. My problem is that the animation is clipped to the bounds of the Detail View Controller, it doesn't animate into the Master View Controller, therefore limiting the effect. I see that Apple and CulturedCode managed to make this happen, but I'm stumped. I've tried the following solutions: self.splitViewController.view.clipToBounds = False; self.view.clipToBounds = False; self.tableView.clipToBounds = False; The only other solution I can think of is discarding the UISplitViewController altogether and creating my own VC programmatically that will mimic the UISVC behavior so that both of the views (former separate view controllers) will share the same Super View. Thank you in advance, any advice will help. RR.

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• How do I use the iPhone Simulator in 3.2 (not iPad Simulator)

  - by JustinXXVII

  I'm fixing my app to be a universal binary. Testing on the simulator seems to default to the iPad. For small corrections like checking orientations and small UI updates, the only way I can find to get the iPhone version is to plug in my iPhone and build and run on device. Loading the debugger takes valuable time, when running on simulator is so much faster for this kind of work. Can I set the simulator to default to iPhone for this? Setting it to 3.1.3 doesn't work because of the 3.2 code I have in the binary for the iPad.

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• HTML5 Video Volume

  - by Mikushi

  Hi, i'm currently working on a HTML5 video player, i got it working fully everywhere, except on the freakin iPad. Basically, i can control everything, except the sound, i have a mute button, it works fine on Google Chrome, FF3.6 and Safari on Mac OS, but on the iPad no matter what value i put in video.volume, there is no change happening. Anybody got it working properly? Code: <video src="video_url" width="608" height="476" autobuffer="autobuffer" id="html5-player" preload> Your browser doesn't support HTML5. </video var muted = false; $j('.player-mute').click(function(){ if(muted) { videoPlayer.volume = 1; muted = false; } else { videoPlayer.volume = 0; muted = true; } });

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• iPad app store visibility

  - by Jameson

  So I created my iPad app and submitted it to the store, the app is called photogoo. I now have the iPad and I am finding that it is not possible to browse to the app in any way, confirmed by the zero downloads from yesterday. It is only possible to find by searching.. I also noticed that the apps in entertainment were being listed alphabetically and stopped at "F" Am I really being excluded because my app starts with the letter "P" or is it possible there is some reason that I am not being listed under "all apps"?

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• Are UIGestureRecognizer's coming to an the iPhone not just the iPad

  - by Jaba

  I want to use the UIGestureRecognizer's inside the iPhonenot the iPad, is apple going to come out with that some time soon?

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• Why in landscape orientation in simulator all the subviews appear out of order?

  - by wolverine

  I was doing a sample app in ipad. I added about 4 to 5 imageviews to the left side of the view vertically. This view will appear when we select the corresponding entry in the splitviewcontroller. In ipad simulator too, all the images were loading and all are working fine in portrait orientation. But when I rotate the simulator to landscape orientation, these imageviews doesnt appear where i placed them. Some of them overlapping each other, some have half of their part in the navigation bar and all. Has gone completely out of order. I am confused why is all this happening. Can anyone help me solve this issue?

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• Remote Desktop Application

  - by Lennie De Villiers

  Hi, Is there an application that will allow me to remote desktop from iPad to another machine?

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• CGLayer from an IUView

  - by ZeLegolas

  Hi On iPhone or iPad someone know how we can get a CGLayer (not a CALayer) from an UIView? Regards

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• Is there an API to tap to Apple's Bonjour service?

  - by Roman Kagan

  Is there an API to tap to Apple's Bonjour service (I'm planning to share my non iTunes library with iPad)?

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• iOS - conditional compilation (xcode)

  - by sol

  I have created an additional iPad target for what was originally an iphone app. From the Apple docs: "In nearly all cases, you will want to define a new view controller class to manage the iPad version of your application interface, especially if that interface is at all different from your iPhone interface. You can use conditional compilation to coordinate the creation of the different view controllers." But they don't give any example or detail on what conditional compilation is. Can anyone give an example? And where would I do this?

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• Html5 - Callback when media is ready on iPad wont work

  - by Kap

  I'm trying to add a callback to a HTML5 audio element on an iPad. I added an eventlistener to the element, the myOtherThing() starts but there is no sound. If I pause and the play the sound again the audio starts. This works in chrome. Does anyone have an idea how I can do this? myAudioElement.src = "path_to_file"; addEventListener("canplay", function(){ myAudioElement.play(); myOtherThing.start(); }); SOLVED Just wanted to share my solution here, just in case someone else needs it. As far as I understand the iPad does not trigger any events without user interactions. So to be able to use "canply", "playing" and all the other events you need to use the built in media controller. Once you press play in that controller, the events gets triggered. After that you can use your custom interface.

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• How can i get the iphone's CPU usage and memory usage?

  - by yue zhang

  How can i get the ipad's CPU usage and memory usage?

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• .Net programming on a Apple computer

  - by VoodooChild

  Hello, I really would like to write an app or apps for iPhone / iPad. I've never done this so far because most of my work has been in windows environment. I recently got an i7 with windows 7 and love it, and this is what I am using to do development on currently. I would love to try out writing a simple App on a mac for either an iPhone or iPad. The question I had was are there any developers using a macbook to do windows based programming as well as writing apps? And what is their setups like? (example: using bootcamp) Most importantly, is it recommended based on the experience they had doing so? any problems / performance issue? These are the concerns I have to address before justifying spending time and money on this. Thanks, Voodoo

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• UIView added with incorrect orientation

  - by mx12

  So I have been working on a problem with UIView on the iPad. Essentially I have a splitview as the root view and I want to overlay my custom image view over top of the splitview (This is because the splitview must be the root view). The problem that I have, is when I call addSubview on my splitview the subview gets displayed in its default orientation, with no regard to the iPad's current orientation. Any suggestions on what I am doing wrong or flag I am not setting? Thanks! Code that I am using to add the view: [splitViewController.view addSubview: myImageController.view]; Example screenshots: http://www.engineering.uiowa.edu/~krtaylor/so/

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• Different icons and title for same iPad application

  - by trapo

  I'm developing an iPad application that will be distributed "in-house" ie only inside enterprise. They asked me if i can produce 2 different releases of the same application to be installed on the same iPad. The first one will communicate with a production server while the second will use a sandbox server and will be used by user to learn the system. Server url will be changed in app settings. They told me to differentiate these releases by icon and title (and also, of course, by title in navigation bar). What's the best way to get this goal avoiding duplication of the project?

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• Mobile Safari text selection after input field focus

  - by Andy

  I have some legacy html that needs to work on old and new browsers (down to IE7) as well as the iPad. The iPad is the biggest issues because of how text selection is handled. On a page there is a textarea as well as some text instructions. The instructions are in a <div> and the user needs to be able to select the instructions. The problem is that once focus is placed in the textarea, the user cannot subsequently select the text instructions in the <div>. This is because the text cannot receive focus. According to the Safari Web Content Guide: Handling Events (especially, "Making Elements Clickable"), you can add a onclick event handler to the div you want to receive focus. This solution works (although it is not ideal) in iOS 6x but it does not work in iOS 5x. Does anyone have a suggestion that minimizes changes to our existing code and produces consistant user interaction. Here is sample code that shows the problem. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <script src="http://code.jquery.com/jquery-1.8.2.js"></script> <!-- Resources: Safari Web Content Guide: Handling Events (especially, "Making Elements Clickable") http://developer.apple.com/library/safari/#documentation/appleapplications/reference/safariwebcontent/HandlingEvents/HandlingEvents.html#//apple_ref/doc/uid/TP40006511-SW1 --> </head> <body> <div style="width:550"> <div onclick='function() { void(0); }'> <p>On the iPad, I want to be able to select this text after the textarea has had focus.</p> </div> <textarea rows="20" cols="80">After focus is in the textarea, can you select the text above?</textarea> </div> </body> </html>

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• L'iPad disponible dans 9 pays dont la France le 28 mai mais pas avant juillet pour d'autres, dont la

  Aujourd'hui, Apple a confirmé, malgré le fait qu'il semble bien que l'iPad soit difficilement trouvable aux Etats-Unis, que l'iPad sera disponible dès le 28 mai dans 9 autres pays, dont France, le Canada et la Suisse. (mais aussi l'Australie, l'Allemagne, l'Italie, l'Espagne, le Royaume-Unis et le Japon). Les prix seront dévoilé ce lundi 10 mai sur l'Apple Store, où il sera également possible de les pré-commander. Dans cette même annonce, Apple annonce que l'iPad sera également lancé dans 9 autres pays, dont la Belgique. Mais ceux-ci devront patienter jusqu'au mois de Juillet pour cela. Source : http://www.apple.com/pr/library/2010/05/07ipad.html...

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• Samsung : Apple sommé de rédiger une nouvelle annonce par la justice Britannique stipulant que le Coréen ne copie pas l'iPad

  « Samsung ne copie pas l'iPad », Apple est contraint d'afficher ce message par voie publicitaire Suite à une décision de justice britannique L'une des batailles juridiques opposant Apple à Samsung pour copie du look-and-feel de l'iPad vient de livrer son verdict. La firme à la pomme vient de perdre le procès intenté contre Samsung sur le territoire britannique sur le design de la Galaxy Tab qui serait trop similaire à celui de l'iPad. [IMG]http://ftp-developpez.com/gordon-fowler/GalaxyTab.jpg[/IMG] Galaxy Tab Le juge britannique Colin Birss a statué que Samsung n'avait pas enfreint les brevets invoqués par Apple, et que les...

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• L'iPad tente déjà de rattraper Android en terme de trafic internet, mais l'OS mobile de Google résis

  Mise à jour du 16/04/10 L'iPad génère déjà autant de trafic internet que BlackBerry Et tente de rattraper Android, mais l'OS de Google résiste Selon les mesures de NetApplications, l'iPad aurait déjà rejoint (voire dépassé) les smartphones de Blackberry. La tablette serait même sur le point de talonner le score des téléphones embarquant Android comme système d'exploitation. L'iPad représenterait en effet aux alentours de 0,04 % du trafic internet global. Un chiffre à comparer avec les 0,04 % de RIM (l'OS des Blackberry) et à mettre en perspective avec les 0,07 % d'Android (l'OS mobile de Google). Rappelons que l...

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