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  • iOS Question. Is There a Framework for Build Time Based Apps.

    - by dugla
    I have the need for some time based effects in the iPad app I am building. The UIView class animation capability beginAnimatins/commitAnimations is exactly the sort of thing I am looking for but it is restricted to specific properties of UIView deemed animatable. Ideally, I am looking for a solution that lets me drive an a time-based function that can perhaps send messages to a class of my own choosing at the rate I specify in the animation. Specifically, I have a function - my implementation of the RenderMan function "smoothstep" which is essentially an ease-in ease-out curve common in animation. It takes [0 - 1] as input and outputs [0 - 1] as the curve is evaluated. I want to drive this function for a duration of my own choosing at rate of my own choosing. Thanks in advance. -Doug

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  • iPhone OS Memory Warnings. What Do The Different Levels Mean?

    - by dugla
    Regarding the black art of managing memory on iPhone OS devices: what do the different levels of memory warning mean. Level 1? Level 2? Does the dial go to 11? Context: After an extensive memory stress testing period - including running my iPad app with the iPod music player app playing, I am inclined to ignore the random yet infrequent memory warnings I am receiving. My app never crashes. Ever. My app is leak free. And, well, the mems warnings just don't seem to matter. Thanks, Doug

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  • What's the correct way to represent a linear process in CocoaTouch (UIKit)?

    - by UloPe
    I need to represent a linear process (think wizard) in an iPad app. In principle I could use a UINavigationController and just keep pushing new controllers for each step of the process. But this seems rather inefficient since the process I'm modeling has no notion of navigating backwards so all previous views would pointlessly stay around and use up resources. At the moment I keep adding and removing a subview to one "master" viewcontroller and basically swapping out the contents. This works but feels rather clunky and I hope there is some nicer way to achieve this. Additionally there needs to be an animated transition between the views. (I have this working at the moment via beginAnimations / commitAnimations)

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  • How i solve memory leak problem?

    - by RRB
    Hi, I developing an simple application in which design or make code in which i creating and instance object of UIImage. When i swip on Ipad screen it make up an image of the sreen and that image i render into UIImage object after that this image i set into UIImageView object and UIimage object is released. Every time i swipe on the screen and above process is does again and again. But it give me leak in renderImage = [[UIImage alloc] init];. Code, _renderImage = [[UIImage alloc] init]; _textImageV = [[UIImageView alloc] init]; [self renderIntoImage]; -(void)renderIntoImage { UIGraphicsBeginImageContext(bgTableView.bounds.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; _renderImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); } _textImageV.image = _renderImage; [_renderImage release]; after completing the process of swipe i also releasing _textImageV. How i solve the memory leak problem in UIImage *_renderImage?

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  • Will my app get rejected because of this ???

    - by A for Alpha
    hi guys... i am developing a ebook reader app for iPad and i am facing a issue related to the design aspects of the bookshelf. I am posting a sample photo of my bookshelf here. I want the book shelf to have a horizontal navigation similar to that of the iBooks. Will this come under violation of Apple's HIG?? Will they consider this design to be a imitation of their iBooks design and reject it?? I'm worried...

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  • Loading HTML5 video on iPad via onclick event tied to a div

    - by joncys
    I'm developing an HTML5 application (a game), that automatically preloads 5 video files. I'm able to do so correctly on Safari for PC, so there are no overlooked problems with file formats, codecs or such. The load fails on an iPad. As an official guide for video on iOS puts it: This means the JavaScript play() and load() methods are also inactive until the user initiates playback, unless the play() or load() method is triggered by user action. In other words, a user-initiated Play button works, but an onLoad="play()" event does not. Does this mean, that I have no means to initiate the loading of video after a user initiated action, if that action hasn't been tied to a video element (user clicked on a regular div — I request loading and displaying of a video, compared to the user actually clicking on a video element to load and play that particular element)? Thanks for your help!

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  • APNS Sending Frequent Notifications to Device

    - by user564447
    I'm trying to mimic a pager with my app by sending push notifications to the user until he or she responds. My thought was to send a push every few seconds and play the default sound on arrival. Not perfect, but better than nothing. It's working all right. However, I am finding that the sound starts to stutter/interrupt a bit after a few notifications have been sent -- as if it's trying to play the sound more than once. This happens even if I only send the push every 10 seconds. I just tested it at 20 second intervals and even then it starts to sound interrupted after about 10 times. Any idea how to resolve this so each message plays the sound crisply? p.s. Testing performed on an iPad.

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  • Apple HTML5 progressive streaming

    - by seanc
    Is there a copy of the file saved to the ipad/ipod when using progressive http download (apple segmented) that the user could potentially copy off the device? meaning, is this scenario considered 'safe' from a content protection pov: 1. user comes to websites with movies behind paywall 2. user selects a movie to watch online (progressively downloaded or 'pseudo-streamed') 3. segments are downloaded seamlessly by html5 video tag as part of .m3u8 4. movie plays/ends. is there any full copy of this movie on the device that can be transferred off? anyone know apple's stance on this?

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  • [iOS] How to catch cancallation of UIScrollView or others?

    - by kyu
    Sometimes, interruptions such as phone call occur and disturb a regular behavior of an app in iPhone or iPad. For example, I created one UIScrollView instance and implemented UIScrollView delegate methods: scrollViewWillBeginDragging and scrollViewDidEndDragging(and scrollViewDidEndDecelerating). A scrollViewWillBeginDragging method deactivated all custom buttons in my app. Then scrollViewDidEndDragging and scrollViewDidEndDecelerating methods activated these custom buttons. That is, while the user scrolled, all custom buttons became deactivated for a while. The problem was that while the user started to drag and just held an UIScrollView instance, if I took a screenshot by pressing a home button and a power button, then any of scrollViewDidEndDragging and scrollViewDidEndDecelerating didn't get called. So the app became messed up. I implemented a UIApplicationWillResignActiveNotification method in my UIViewController, but it didn't get called after taking a screenshot. How can I catch any kind of interruption that disturbs a regular flow of events? Sometimes, touchesEnd and touchesCanceled didn't get called too due to an interruption. Thank you.

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  • Crossplatform development for iPhone & Android

    - by LeonixSolutions
    As far as I can see there doesn't seem to any mature environment for crossplatform development for iPhone & Android slate (but feel free to correct me). I don't know Ipad, I must admit. Any reason why plain Java wouldn't cut it? (maybe underlying things like database (I am not too concerned with hardware)) I am thinking to try to make everything browser based, although that won't get around the d/b & h/w issues, unless there is JS framework that does so. Any advice?

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  • NSUserDefaults doesn't save

    - by JJSaccolo
    Hi everybody! i'm trying to save some informations in an iphone/ipad app. The problem is that it works but if i close the app (with the home button on the simulator or closing with cmd+q) the informations become lost! this is my code (and, if you see, i used "syncronize") - (IBAction)choose1{ NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; [defaults setObject:@"choose1" forKey:@"choose"]; [defaults synchronize]; } - (IBAction)choose2{ NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; [defaults setObject:@"choose2" forKey:@"choose"]; [defaults synchronize]; } - (IBAction)openview{ NSString *var = [[NSUserDefaults standardUserDefaults] objectForKey:@"choose"]; if (var == @"choose1"){ [self pushViewController:view1 animated:YES];} else if (var == @"choose1"){ [self pushViewController:view2 animated:YES]; } } I don't understand why :(

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  • save UIImageView state & the save the Entire View

    - by adamprocter
    I have an iPad app where you add photos to a page. I then want to save the photos positions, then add further pages with more photo positions and eventually save all the pagesto be looked at later in a slideshow style. Can anyone advise 1. Saving UIImageView states when moving to new views (or swapping views) - I see this on using NSCoding iPhone - save UIImageView state - but am at a lose - any more examples ? 2. How to save the 'entire' set of view to look at later (like a slideshow) - no idea on where to start with this ? array ? coredata ? Thanks

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  • Converting iPhone/iPad apps onto Android

    - by jimbo
    Hi all, I have started to build my own apps on iPhones and iPad using the iPhone SDK, and the next question that is aways asked by the client is "Can we have it on Android?"... So my question to you the 'internet' is, what are my options? I don't have the time to learn another language, (learning iOS has been enough!) so are there companies who specialize in this, or are there online option that do a convert? Any help on this welcome, just need to know which way to turn...

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  • How to add a multiline title bar in UINavigationController

    - by Cocoa Matters
    I have try to add a two line title bar in UINavigationController I want to adjust font size automatically set according to string length.My String max size goes to 60. I have try to implemented through following code UILabel *bigLabel = [[UILabel alloc] init]; bigLabel.text = @"1234567890 1234567890 1234567890 1234567890 1234567890 123456"; bigLabel.backgroundColor = [UIColor clearColor]; bigLabel.textColor = [UIColor whiteColor]; bigLabel.font = [UIFont boldSystemFontOfSize:20]; bigLabel.adjustsFontSizeToFitWidth = YES; bigLabel.clipsToBounds = NO; bigLabel.numberOfLines = 2; bigLabel.textAlignment = ([self.title length] < 10 ? NSTextAlignmentCenter : NSTextAlignmentLeft); [bigLabel sizeToFit]; self.navigationItem.titleView = bigLabel; It didn't work for me can you help me please. I have to made this for iPhone and iPad screen

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  • Add the view controller in the TabBarController from within one of its viewControllers ?

    - by user550001
    Hi, I am new to iPhone/iPad Developer. I am developing a application using UITabBarController. I have created a tabbarcontroller class in which i have implemented a UITabBarController object through NIB file. there is 4 tab as LoginPage, Category Page, About Us Page, Setting Page. I want to add logout tab in tabbarcontroller after login in Login Page by programmatically and when user will click to logout tab then it back to home/login screen and logout tab will eliminate. So i need a code snippet to add TabBar Item in UITabBarController within its View Controller. Thank you in advance

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  • MPMoviePlayerView fade in/out of overlay

    - by therobot
    I've got a MPMoviePlayerViewController, and I've added an overlay as a subview to the MPMoviePlayerController.view that it controls. Does anyone know if there's an easy way to make my added overlay fade in and out with the rest of the controls? My code to initialize and present the player is: LandscapeMPVC * theMovieViewController = [[LandscapeMPVC alloc] initWithContentURL:sourceURL]; MPMoviePlayerController * theMoviePlayer = [theMovieViewController moviePlayer]; [theMoviePlayer setRepeatMode:MPMovieRepeatModeOne]; [theMoviePlayer setScalingMode:MPMovieScalingModeAspectFit]; [theMoviePlayer setFullscreen:YES]; // Attemps at overlays MPViewOverlayController * overlayCont = [[MPViewOverlayController alloc] init]; [[theMovieViewController view] addSubview:overlayCont.view]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(resetToolbar:) name:MPMoviePlayerPlaybackDidFinishNotification object:theMoviePlayer]; [self presentMoviePlayerViewControllerAnimated:theMovieViewController]; LandscapeMPVC is just a subclass of MoviePlayerViewController where I overwrite the orientation code. When the rest of the controls fade in the movie player, my custom overlay does not. Is there some code in the controller that I need to add, or some notification that is sent? Any input would be greatly appreciated.

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  • How can we change views in a UISplitViewController other than using the popover and selecting?

    - by wolverine
    I have done a sample app with UISplitViewController studying the example they have provided. I have created three detailviews and have configured them to change by the default means. Either using the left/master view in landscape AND using the popover in the portrait orientation. Now I am trying to move to another view(previous/next) from the currentView by using left/right swipe in each view. For that, what I did was just created a function in the RootViewController. I copy-pasted the same code as that of the tablerow selection used by the popover from the RootViewController. I am calling this function from my current view's controller and is passing the respective index of the view(to be displayed next) from the current view. Function is being called but nothing is happening. Plz help me OR is anyother way to do it other than this complex step? I am giving the function that I used to change the view. - (void) rearrangeViews:(int)viewRow { UIViewController <SubstitutableDetailViewController> *detailViewController = nil; if (viewRow == 0) { DetailViewController *newDetailViewController = [[DetailViewController alloc] initWithNibName:@"DetailView" bundle:nil]; detailViewController = newDetailViewController; } if (viewRow == 1) { SecondDetailViewController *newDetailViewController = [[SecondDetailViewController alloc] initWithNibName:@"SecondDetailView" bundle:nil]; detailViewController = newDetailViewController; } if (viewRow == 2) { ThirdDetailViewController *newDetailViewController = [[ThirdDetailViewController alloc] initWithNibName:@"ThirdDetailView" bundle:nil]; detailViewController = newDetailViewController; } // Update the split view controller's view controllers array. NSArray *viewControllers = [[NSArray alloc] initWithObjects:self.navigationController, detailViewController, nil]; splitViewController.viewControllers = viewControllers; [viewControllers release]; if (rootPopoverButtonItem != nil) { [detailViewController showRootPopoverButtonItem:self.rootPopoverButtonItem]; } [detailViewController release]; }

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  • Steve Jobs Goes On Medical. iPad 2 and iPhone 5 On Track.

    - by Gopinath
    Here is a bit of disappointing news for Apple fan boys. Steve Jobs is again going on medical leave as he wants to concentrate on his health for sometime. In an email to the employees of Apple Steve said, At my request, the board of directors has granted me a medical leave of absence so I can focus on my health..I will continue as CEO and be involved in major strategic decisions for the company.I have great confidence that Tim and the rest of the executive management team will do a terrific job executing the exciting plans we have in place for 2011   Seems to the plans for release of much anticipated iPad 2 and iPhone 5 will not be affected by Steve’s absence -as rumoured iPad 2 In April, iPhone 5 In June With New Hardware. Here is the full content of the email Steve Jobs sent to all employees: Team, At my request, the board of directors has granted me a medical leave of absence so I can focus on my health. I will continue as CEO and be involved in major strategic decisions for the company. I have asked Tim Cook to be responsible for all of Apple’s day to day operations. I have great confidence that Tim and the rest of the executive management team will do a terrific job executing the exciting plans we have in place for 2011. I love Apple so much and hope to be back as soon as I can. In the meantime, my family and I would deeply appreciate respect for our privacy. Steve This article titled,Steve Jobs Goes On Medical. iPad 2 and iPhone 5 On Track., was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • adding UIImageView to UIScrollView throws exception cocoa touch for iPad

    - by Brodie4598
    I am a noob at OBJ-C :) I am trying to add a UIImageView to a UIScrollView to display a large image in my iPad app. I have followed the tutorial here exactly: http://howtomakeiphoneapps.com/2009/12/how-to-use-uiscrollview-in-your-iphone-app/ The only difference is that in my App the View is in a seperate tab and I am using a different image. here is my code: - (void)viewDidLoad { [super viewDidLoad]; UIImageView *tempImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Cheyenne81"]]; self.imageView = tempImageView; [tempImageView release]; scrollView.contentSize = CGSizeMake(imageView.frame.size.width, imageView.frame.size.height); scrollView.maximumZoomScale = 4.0; scrollView.minimumZoomScale = 0.75; scrollView.clipsToBounds = YES; scrollView.delegate = self; [scrollView addSubview:imageView]; } - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{ return imageView; } and: @interface UseScrollViewViewController : UIViewController<UIScrollViewDelegate>{ IBOutlet UIScrollView *scrollView; UIImageView *imageView; } @property (nonatomic, retain) UIScrollView *scrollView; @property (nonatomic, retain) UIImageView *imageView; @end I then create a UIScrollView in Interface Builder and link it to the scrollView outlet. Thats when I get the problem. When I run the program it crashes instantly. If I run it without linking the scrollView to the outlet, it will run (allbeit with a blnk screen). The following is the error I get in the console: 2010-03-27 20:18:13.467 UseScrollViewViewController[7421:207] * Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key scrollView.'

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  • PDF hyperlinks on iPhone/iPad

    - by RoLYroLLs
    Hi, I've been looking around Google and SO and haven't quite found an answer to my question, or at least a more recent answer. I have a PDF with hyperlinks/hotspots in it and would like to display the PDF file in my own iPhone/iPad app. When the user clicks on a hyperlink/hotspot I would like the user to be taken to the appropriate location of the link (whether another page on the PDF or a webpage outside of the app). I have found many questions like this on here, but most dated over 6 moths ago. While that might not be so long ago, it kind of is in-spite of newer technologies and the probability of someone comping up with new code/way to do it. I looked into the QuartzDemo sample app and edited the PDF to have a hotspot and it does not work. Maybe the ability is there, but not implemented? I have found one app that DOES work great! The GoodReader app displays my PDF and allows the clicking of hotspots in my PDF. However, I'd like this implemented in my own app. So, has anyone been playing around with this? Anyone find a solution? Can anyone point others in a direction? Thanks for your time.

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  • xcode UIWebView - Text Fields = No on screen keyboard.

    - by Aakburns
    This application is used to let you use our company basecamp site and only that site. When logged in, if you go to post a new message, you can insert text in the title text field, but if you try to tap in the message body section, it does not bring up the keyboard. I have to assume it's something with my coding, because safari works just fine with it. You can pick textile/html mode or easy. The keyboard does come up in textile/html mode but not in easy formatting mode. Any ideas? Here are some screenshot examples from the iPad. This is shown as the text view not working, no keyboard comes up when you tap in the box. arikburnsDOTcom/forums/fn/IMG_0007.png If you click on 'Switch to Textile/HTML' As seen in the image above, you are presented with this new text box which you can tap in and the keyboard comes up. arikburnsDOTcom/forums/fn/IMG_0006.PNG Now, also note, if you load this same page up in safari, it doesn't actually give you an option as to what text formatting to use, it just works. No options. I basically need to force the 'Textile/HTML' text box somehow and no I cannot change the website code itself. Thanks in advance.

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  • http stream of baselineh264 doesnt seem to work in my MPMoviePlayerViewController

    - by theprojectabot
    Here is some code... I have a stream that works correctly if I view with safari on the iphone or quicktimex on the mac... but the stream doesnt view in my code for the ipad simulator - (IBAction)clickedOpenMovie:(id)sender { NSString *myString = [NSString stringWithFormat:@"http://myipofstreamingserver:1935/live/aStream/playlist.m3u8"]; //NSString *myString = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"720p5994-prores-hq_iPhone_320x240.m4v"]; NSURL *myURL = [NSURL fileURLWithPath:myString]; [self playMovieAtURL:myURL]; } -(void)playMovieAtURL:(NSURL*)theURL { //CGRect moviePlayerFrame = CGRectMake(20, 33, 100, 100); //UIView playerView = [[[UIView alloc] initWithFrame:moviePlayerFrame] autorelease]; MPMoviePlayerViewController* movieViewController = [[MPMoviePlayerViewController alloc] initWithContentURL:theURL]; //theMovie.scalingMode = MPMovieScalingModeNone; //theMovie. = MPMovieControlStyleFullscreen; //movieViewController.controlStyle = MPMovieControlModeDefault; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(myMovieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:movieViewController]; //UIViewController *movieViewController = [[UIViewController alloc] initWithContentURL:theURL]; [self presentMoviePlayerViewControllerAnimated:movieViewController]; //[theMovie play]; }

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  • iOS iPad UIActionSheet Issue

    - by hart1994
    I am currently developing an application which needs an option to 'share' using multiple services; such as email, twitter. To to this, I have a UIBarButtonItem coded in and when touched, it triggers this: UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil]; [sheet addButtonWithTitle:@"Email"]; [sheet addButtonWithTitle:@"Tweet"]; [sheet addButtonWithTitle:@"Cancel"]; sheet.cancelButtonIndex = sheet.numberOfButtons-1; [sheet showFromRect:self.view.bounds inView:self.view animated:YES]; [sheet release]; In conjunction with this to detect which button is selected: clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex == actionSheet.cancelButtonIndex) { return; } switch (buttonIndex) { case 0: { [self emailThis]; break; } case 1: { [self tweetThis]; break; } } This works a treat on the iPhone. But unfortunately it displays incorrectly on the iPad. It looks like it is trying to display the UIPopoverController, but it is positioned center of the navbar with practically no height. I have looked into using the UIPopoverController, but I cannot seem to find out how to use it with buttons. Is there anyway I can adapt the code above to properly display the buttons, as it's trying to already. Many thanks, Ryan PS: I'm new to objective-c/iOS coding, so please be specific. Thank you :)

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