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  • image filters for iphone sdk development

    - by plsp
    Hi All, I am planning to develop an iphone app which makes use of image filters like blurring, sharpening,etc. I noticed that there are few approaches for this one, Use openGL ES. I even found an example code on apple iphone dev site. How easy is openGL for somebody who has never used it? Can the image filters be implemented using the openGL framework? There is a Quartz demo as well posted on apple iphone dev site. Has anybody used this framework for doing image processing? How is this approach compared to openGL framework? Don't use openGL and Quartz framework. Basically access the raw pixels from the image and do the manipulation myself. Make use of any custom built image processing libraries like this one. Do you know of any other libraries like this one? Can anybody provide insights/suggestions on which option is the best? Your opinions are highly appreciated. Thanks!

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  • Forcing UIInterfaceOrientation changes on iPhone

    - by Andiih
    I'm strugging with getting an iPhone application which requires just about every push or pop in the Nav Controller Stack to change orientation. Basically the first view is portrait, the second landscape the third portrait again (Yes I know this is less than ideal, but that's the design and I've got to implement it). I've been through various advice on here.... http://stackoverflow.com/questions/995723/how-do-i-detect-a-rotation-on-the-iphone-without-the-device-autorotating http://stackoverflow.com/questions/1824682/force-portrait-orientation-on-pushing-new-view-to-uinavigationviewcontroller http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation But without total success. Setting to link against 3.1.2 my reading of the linked articles above seems to indicate that if my portrait view pushes a view with - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return ((interfaceOrientation == UIInterfaceOrientationLandscapeRight) ); } Then then that view should appear rotated to landscape. What happens is it appears in its "broken" portrait form, then rotates correctly as the device is turned. If I pop the controller back to my portrait view (which has an appropriate shouldAutoRotate...) then that remains in broken landscape view until the device is returned to portrait orientation. I've also tried removing all the shouldautorotate messages, and instead forcing rotation by transforming the view. This kind of works, and I've figured out that by moving the status bar (which is actually hidden in my application) [UIApplication sharedApplication].statusBarOrientation = UIInterfaceOrientationLandscapeRight; the keyboard will appear with the correct orientation when desired. The problem with this approach is that the status bar transform is weird and ugly when you don't have a status bar - a shadow looms over the page with each change. So. What am I missing. 1) Am I wrong in thinking that in 3.1.2 (or possibly earlier) shouldAutorotateToInterfaceOrientation should provide the desired orientation simply by pushing controllers ? 2) Is there another way of getting keyboards to appear in the correct orientation. 3) Are the undocumented API calls the way to go (please no!)

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  • iPhone offline reading

    - by Andy
    Hi, first of all - I am quite new to iPhone App development (3 months). I am working for a software company that offers a content management system. Our customers are for the main part publishing houses for magazines. They use our software to write articles to their homepages. Now we want to offer iPhone Applications to go with our cms. What I have accomplished so far is an RSS reader that shows newly published articles in a list view. The user selects one article and is redirected to a specially formatted detail view of this article. The next step is to add offline reading capabilities. I have searched the internet up and down but couldn't find anything like a best practice for that. I get it that there are two possibilities in general: Store the contents of the uiwebview locally on the iPhone/iPad (including css, images, js and so on). There would be the need to rework the basic html to use the downloaded css, images and js. Also I would have to somehow edit hyperlinks to following pages in multipage articles - Sounds like a lot of work ;) Create a PDF on the server side and download that to the mobile device. Rework the RSS Source to point to the locally saved pdf instead of the website on the server. My question is - what is the better way to go? Are there any downsides for either of the possibilities? Are there other (simple ;)) ways to implement offline reading features? Are there possibly any howto's that I could've missed? Thanks y'all!

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  • iPhone: Proper use of View and View Controller

    - by Joel
    I've recently been doing a lot of Objective-C programming, and just got back into doing more iPhone development. I've done a lot of programming using MVC in other languages/frameworks, but I just want to make sure I'm using MVC properly in my iPhone Development. I created a new iPhone Utility Application, which creates two views: MainView and FlipsideView. Both have a controller (FlipsideViewController and MainViewController) and XIB file of their own. What I've been doing is putting the IBOutlet UIControl myControl variables in my MainView.h or FlipsideView.h files and then tying the controls in Interface Builder to those variables. Then I put any IBAction SomeAction myAction methods in the MainViewController.h and FlipsideViewController.h files and tying the events to those methods in Interface Builder. This seems to be conceptually correct, but seems to cause problems. Say I have a button that when clicked it changes a label's text. So the Controller doesn't have a clue of what the variable name of the label is in the OnTouchUp event handler for my button. So I make a @property for it. But since the MainViewController.view property isn't of type MyView, I get warnings or errors whenever I try to access those properties from the view controller. I am doing this correctly? Is there a better way to do this? If this is correct, how do I properly work with those variables without getting warnings or errors? Thanks

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  • Universal iPhone/iPad application debug compilation error for iPhone testing

    - by andybee
    I have written an iPhone and iPad universal app which runs fine in the iPad simulator on Xcode, but I would now like to test the iPhone functionality. I seem unable to run the iPhone simulator with this code as it always defaults to the iPad? Instead I tried to run on the device and as it begins to run I get the following error: dyld: Symbol not found: _OBJC_CLASS_$_UISplitViewController Referenced from: /var/mobile/Applications/9770ACFA-0B88-41D4-AF56-77B66B324640/Test.app/Test Expected in: /System/Library/Frameworks/UIKit.framework/UIKit in /var/mobile/Applications/9770ACFA-0B88-41D4-AF56-77B66B324640/Test.app/TEST As the App is built programmatically rather than using XIB's, I've split the 2 device logics using the following lines in the main.m method: if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) { retVal = UIApplicationMain(argc, argv, nil, @"AppDelegate_Pad"); } else { retVal = UIApplicationMain(argc, argv, nil, @"AppDelegate_Phone"); } From that point forth they use different AppDelegates and I've checked my headers to ensure the UISplitView is never used nor imported via the Phone logic. How do I avoid this error and is there a better way to split the universal logic paths in this programmatically-created app?

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  • Universal iPhone/iPad Windows-based app with Core Data crashes on iPhone SDK 4 beta 3

    - by Tarfa
    Hi all. I installed iPhone OS 4.0 Beta 3. When I create a new Windows-based universal app with Core Data (File New Project Windows-based Application --- select Universal in drop down and check the "Use Core Data for storage" check box) the app launches fine into the iPhone simulator but crashes in the iPad simulator. The console message returned is: dyld: Symbol not found: _OBJC_CLASS_$_NSURL Referenced from: /Users/tarfa/Library/Application Support/iPhone Simulator/3.2/Applications/5BB644DC-9370-4894-8884-BAEBA64D9ED0/Universal.app/Universal Expected in: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.2.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation I'm stumped. Anyone else experiencing this problem?

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  • MKMapKit custom annotations being added to map, but are not visible on the map

    - by culov
    I learned a lot from the screencast at http://icodeblog.com/2009/12/21/introduction-to-mapkit-in-iphone-os-3-0/ , and ive been trying to incorporate the way he creates a custom annotation into my iphone app. He is hardcoding annotations and adding them individually to the map, whereas i want to add them from my data source. So i have an array of objects with a lat and a lng (ive checked that the values are within range and ought to be appearing on the map) that i iterate through and do [mapView addAnnotation:truck] once this process is completed, i check the number of annotations on the map with [[mapView annotations] count] and its equal to the number it ought to be, so all the annotations are getting added onto the mapView, but for some reason I cant see any annotations in the simulator. I've compared my code with his in all the pertinent places many times, but nothing seems to stand out as being incorrect. Ive also reviewed my code for the last several hours trying to find a point where I do something wrong, but nothing is coming to mind. The images are named just as they are assigned in the custom AnnotationView, the loadAnnotation function is done properly, etc... i dont know what it could be. so i suppose if i could have the answer to one question it would be, what are possible causes for a mapView to contain several annotations, but to not show any on the map? Thanks

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  • MapKit custom annotations being added to map, but are not visible on the map

    - by culov
    I learned a lot from the screencast at http://icodeblog.com/2009/12/21/introduction-to-mapkit-in-iphone-os-3-0/ , and ive been trying to incorporate the way he creates a custom annotation into my iphone app. He is hardcoding annotations and adding them individually to the map, whereas i want to add them from my data source. So i have an array of objects with a lat and a lng (ive checked that the values are within range and ought to be appearing on the map) that i iterate through and do [mapView addAnnotation:truck] once this process is completed, i check the number of annotations on the map with [[mapView annotations] count] and its equal to the number it ought to be, so all the annotations are getting added onto the mapView, but for some reason I cant see any annotations in the simulator. I've compared my code with his in all the pertinent places many times, but nothing seems to stand out as being incorrect. Ive also reviewed my code for the last several hours trying to find a point where I do something wrong, but nothing is coming to mind. The images are named just as they are assigned in the custom AnnotationView, the loadAnnotation function is done properly, etc... i dont know what it could be. so i suppose if i could have the answer to one question it would be, what are possible causes for a mapView to contain several annotations, but to not show any on the map? Thanks

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  • Nostalgia Lane: Steve Jobs Introduces the iPhone in 2007 [Classic Video]

    - by Asian Angel
    With the five year anniversary of the iPhone approaching, here is a look back at when it all started with this classic introductory presentation by Steve Jobs. Steve Jobs introduces iPhone in 2007 [YouTube] How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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  • Moss Really Wants that iPhone! [IT Crowd Video]

    - by Asian Angel
    When Moss walks past the toy grabber game at the arcade, he sees a shiny new iPhone sitting inside! There is no way that Moss can walk away from an opportunity like this, but just what will he have to do in order to get that new iPhone? The IT Crowd [via Fail Desk] Java is Insecure and Awful, It’s Time to Disable It, and Here’s How What Are the Windows A: and B: Drives Used For? HTG Explains: What is DNS?

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  • Resources for Game Development in iPhone for beginners [closed]

    - by Volatil3
    Possible Duplicate: What are the best iPhone game development resources? Hi I'm a programmer but I have never worked on Game programming so have no idea about OpenGL and all that. I am more interested to get into physics based games like Angry Birds and want to implement fewer ideas. Can you recommend me some good books which not only teach the concept of game programming but also practical implementation in iPhone platform? Thanks in advance

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  • App not installed...because its resources have been modified

    - by brettr
    One user cannot install my app because they continue to receive the error: The application “myapp” was not installed on the iPhone “myPhone” because its resources have been modified I've read the error occurs because of adding files after the app is built. I have not added any files. Last week, the user could install the ad hoc without issue. Any ideas?

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  • Adding a self-signed certificate to iphone Simulator?

    - by jr
    I have a self-signed certificate at the endpoint of my API. I'm trying to test some things using the simulator but am getting "untrusted server certificate". I have tried to use safari on the simulator to download the .crt file, but that doesn't seem to work. Where does iPhone Simulator get its keychain from? How can I add a trusted certificate so my application will work? UPDATE I got it to work by creating a CA and then adding a CA certificate using the iPhone provisioning tool. Then I was able to have a certificate signed by that CA certificate on the API server and the NSConnection just worked. I was not able to get it to work using a self-signed certificate for some reason. I need to re-attempt this using the provisioning software. My real question is how do I get this to work on the simulator? I would think that the simulator uses the keychain of the actual computer.

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  • iPhone SDK: Get GPS coordinates from Google Maps

    - by RaYell
    In an iPhone application I'm developing I need to get GPS coordinates to perform some actions based on the values received. Users should have two possibilities of giving the location: automatically from iPhone build-in GPS by finding a specific point on a map (Google Maps) I know how to user CLLocationManager to get current position coordinates and I know how to add Google Maps using JS API. What I would like to know if how can I get coordinates for a specific point on a map that user clicks. Is that possible with UIWebView or is there any other way of getting the values I need?

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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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  • Getting list of bluetooth devices nearby on iphone sdk

    - by Michael Cindric
    Hi Guys, I need to be able to search for all bluetooth devices nearby and just get there ids. I don't need to pair at all. I am using iphone 2.3 beta. Is this possible l have tried using GameKit and no luck does anyone know how to do this. BOOL result = NO; if (!session) { session = [[GKSession alloc] initWithSessionID:@"SCANNER" displayName:nil sessionMode:GKSessionModePeer]; self.session.delegate = self; [self.session setDataReceiveHandler:self withContext:nil]; self.session.available = YES; result = YES; } it dies on [self.session setDataReceiveHandler:self withContext:nil]; with the following error Scanner[42754:207] Error: 30500 -- Invalid parameter for -setDataReceiveHandler:withContext:. then ~ DNSServiceRegister callback: Ref=471fa40, Flags=2, ErrorType=0 name=00rusor1A..iPhone Simulator regtype=_q1eu29voete9jf._udp. domain=local.

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  • Can't get iPhone device token

    - by d.andreykiv
    Hi. I'm trying to get iPhone device token using following code - (void)applicationDidFinishLaunching:(UIApplication *)application { // Override point for customization after app launch [window addSubview:viewController.view]; [window makeKeyAndVisible]; NSLog(@"Registering for push notifications..."); [application registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge|UIRemoteNotificationTypeAlert]; } - (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)newDeviceToken { NSLog(@"Registered!@@"); } - (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error { NSLog(@"application:didFailToRegisterForRemoteNotificationsWithError: %@", error); if ([error code] != 3010) // 3010 is for the iPhone Simulator { // show some alert or otherwise handle the failure to register. } } but only getting "2010-04-02 18:23:35.434 Untitled[3133:207] Registering for push notifications..." What I was doing wrong?

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  • GameKit and GKPeerPicker on 1st Gen iPhone and iPod Touch

    - by Reese McLean
    This is my current set up for my multiplayer game: A view that gives connection tips and warns the user that multiplayer will not work on the 1st Gen iPhone or ipod Touch. There is a "connect" button that pushes the game view and starts the GKPeerPicker. Unfortunately, I don't have a 1st Gen iPhone or iPod Touch to test what happens if they press the connect button. The view will be pushed, but I don't know what will happen when the PeerPicker tries to show. So the Question(s): Is there anyway to tell if the user will not be able to use GameKit so that I can disable the "connect" button? What will happen if they do press the connect button and GameKit is not available?

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  • iPhone: launch image for tab app?

    - by Karsten Silz
    I have a tab-based iPhone app where I want to increase the perceived start-up speed with a launch image. As defined by the iPhone HIG, the launch image is a screenshot of your app (called Default.png) that is displayed immediately and looks very similar to the app's first screen (e.g., the screenshot of an empty table when the app displays a table first). Now the problem with a tab-based app is that users can rearrange the order of tabs so that any of the tabs may be the first tab to show upon launch. I think I read somewhere that you can't change the Default.png programmatically in your app, but I couldn't find that in the HIG (and the "Clock" app seems to do exactly that - having one launch image per tab). So, how do provide a launch image for a tab-based app?

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  • iphone settings disappear

    - by cagreen
    I have created an app which uses Application Settings and user defaults following the example in the book "Beginning iPhone Development". In some cases my settings seem to disappear. If I launch the simulator I can go into settings and see it, I can then open my app and my settings can be read from within the app. If I then leave my app and go back into the settings screen I can no longer see the settings for my app! I'm new to iPhone dev, is there something obvious that I'm overlooking? Thanks.

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  • Facebook Source path issue in iPhone

    - by Arun Thakkar
    Hello everyone!! Hope You all are fie and also in one of your best of moods!! I need your help to solve an issue with Facebook. I have integrate Facebook Connect with my iPhone app. So as per step i have to write path of src folder into 'Header path info' Field in Project Build. I have given the absolute path to 'Header path info' Field. and its run fine without any Error.. But, Now When i Move the project folder to another destination, its but obvious, that path of src folder will change… So Now after moving file, when i run an application, It gives path error. So is there any way to solve this path issue? this comes when i run an app in simulator, and i guess It also won't run in iPhone because of problem of path of src folder. Kindly accept my Apologize if i have written anything wrong.. Looking Forwards, Thanks, Arun Thakkar

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  • What are the Build Settings for a Universal iPhone and iPad Application

    - by McPragma
    What would be the settings to build and have accepted an universal app for both the iPad and iPhone? That is, what would be the settings in Project X Info Build for Architectures [ARCHS] ("Standard(armv6)" or "Optimized(armv6 armv7)" or other) Valid Architectures [VALID_ARCHS] ("armv6 armv7" or other) Build Active Architecture Only (checked or unchecked) and what would we select in the dropdown (Device - 3.2|Distribution|armv?) ? We're either getting warnings at build time that we haven't built for armv7, or the app upload is rejected on account of "The binary you uploaded was invalid. When supporting iPhone, the executable must include support for the armv6 architecture". Thank you for your help.

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