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  • user disallowed geolocation - notify user second time

    - by Dror
    When trying to get geolocation on iPhone the first time - I declined. Every other time I want to get the location (before another reload of the page) I get no response (no error and no success): navigator.geolocation.getCurrentPosition( function (location) { ig_location.lat = location.coords.latitude; ig_location.lng = location.coords.longitude; alert('got it!'); }, function(PositionError) { alert('failed!' + PositionError.message); } ); Is there a way to notify the user every time I fail to get the location? (I do not need to use watchPosition...)

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  • Reading a plist utf-8 value as utf-16

    - by ennuikiller
    I'm working on an iphone app that needs to display superscripts and subscripts. I'm using a picker to read in data from a plist but the unicode values aren't being displayed corretly in the pickerview. Subscripts and superscripts are not being recognized. I'm assuming this is due to the encoding of the plist as utf-8, so the question is how do a convert a plist string encoding from utf-8 to utf-16 ? Just a little more elaboration: If I do this it displays properly at least in a textfield: NSString *equation = @"x\u00B2 + y\u00B2 = z\u00B2" However if I define the same string in a plist and try to read it in and assign it to a string and display it on a pickerview it just displays the the encoding and not the superscripts. @Matt: thanks for your suggestion the unicode is being escaped that is \u00B2 = \u00B2. Googling for "escaped values in plists" returned no useful results, and I haven't been able to use the keyboard cmd-ctrl-shift-+ to work. Any further suggestions would be greatly appreciated!!

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  • Removing facebook API from my project

    - by mac_55
    I'm looking to remove the Facebook API from my iPhone project for 2 reasons: 1) My Facebook functionality is unfinished and I'd like to submit the app minus ALL of the FB functionality 2) I don't want to include the Facebook API as it contains encryption and I don't want to fill out additional forms etc. So. I need a simple way to remove all of my Facebook functionality and not put build the facebook API as part of the binary. I was thinking of commenting out my FB code... but how do I disconnect the FB api so that I can easily put it back in later? Thanks!

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  • UIScrollview doesnt resize in NavigationController when rotated

    - by Icky
    Hey, I have been dealing with this issue for 2 days now, not able to find a solution. I have a navigationcontroller as a root view controller. This one pushes a UIViewcontroller which in turn has a UIScrollview I created with IB. Additionally there is the Navigation bar. My problem arises, when I rotate the IPhone to Landscape mode. In -(void) didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation I want my scrollview to take up the full width (480 px) which it doesnt. I am able to set the frame of the navigation bar to full width perfectly fine, but not the scrollview. I have read that this might be because of the autoresizing masks set in the rooviewcontroller but I have tried out a couple of solutions - none worked for me. Any ideas on how to challenge the problem? Dont know where to start looking.

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  • Video/audio streaming does not stop even if UIWebView is closed - iPad

    - by lostInTransit
    Hi I see this issue only on the iPad. The same things works as expected on the iPhone. I am opening the URL from my application in a UIWebView. If the URL is a normal web page, it works fine as expected. But if the URL is that of a remote video/audio file, the UIWebView opens the default player which is again good. Now when I dismiss the UIWebView (by clicking on the Done button on the player), the streaming doesn't stop and the audio/video keeps playing in the background (I cannot see it but it does keep playing in the background, can hear it). The UIViewController in which the webview was created is also dealloced (I put in a log statement in the dealloc method) but the streaming doesn't stop. Can someone please help me out on why this could be happening? And how can I stop the audio/video streaming when the UIWebView is closed? Thanks.

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  • Preload/predisplay tiles in a CATiledLayer?

    - by jemmons
    On the iPhone (though I imagine it's an equally valid question in Cocoa) I have a UIScrollView around a UIView backed by a CATiledLayer. The way it works by default is to load any uncached/unfetched tiles when my viewport scrolls over a blank section of the CATiledLayer. What I would like to know is if there's a way to trigger CATiledLayer to load a tile that's not actively being displayed? I would like to, for example, preload all tiles contiguous to the currently displayed tile while they are still offscreen, thus avoiding flashing a blank screen that fades in to the image once it's loaded asynchronously. Any ideas?

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  • application: didFinishLaunchingWithOptions doesn't execute, but RootViewController: viewDidLoad does

    - by BeachRunnerJoe
    I'm playing around with the iPad SplitView template and it was working fine before I started swapping out view objects in my RootViewController. When it was working fine, the application:didFinishLaunchingWithOptions method would be called and would setup my persistant store objects, then the RootViewController:viewDidLoad method would be called to populate my rootView with data from my store. I opened up IB and started swapping out view objects in my RootView and now the application:didFinishLaunchingWithOptions method never gets called, but the RootViewController:viewDidLoad method still does. Obviously, the app crashes because the viewDidLoad method depends on the successful execution of the didFinishLauchingWIthOptions method to setup the persistent store objects. Does anyone have any thoughts on what is causing this or how I can go about investigating what's causing this? I'm obviously new to iPhone OS development, so I apologize if this questions is absurd in any way. Thanks so much in advance for your help!

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  • Memory efficient way of inserting an array of objects with Core Data

    - by randombits
    I'm working on a piece of code for an iPhone application that fetches a bunch of data from a server and builds objects from it on the client. It ends up creating roughly 40,000 objects. They aren't displayed to the user, I just need to create instances of NSManagedObject and store them to persistent storage. Am I wrong in thinking that the only way to do this is to create a single object, then save the context? is it best to create the objects all at once, then somehow save them to the context after they're created and stored in some set or array? If so, can one show some example code for how this is done or point me in the direction to code where this is done? The objects themselves are relatively straight forward models with string or integer attributes and don't contain any complex relationships.

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  • networkActivityIndicatorVisible on iOS 4

    - by user365660
    Hi, I just downloaded xcode 3.2.3 (seperate directory installation) and ios 4 to my iphone. I'm having a problem with networkActivityIndicatorVisible. This works on 3.1.3, both phone and simulator. My code is (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; UIApplication* app2 = [UIApplication sharedApplication]; app2.networkActivityIndicatorVisible = YES; [self loadSources]; // Loads data in table view app2.networkActivityIndicatorVisible = NO; } I get the same effect in the simulator and on the phone both with ios 4.o The networkActivity indicator becomes visible for a fraction of a second and then invisible and this is done after loading the data for the tableView. Has something changed with this? Teo

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  • How do I turn off accelerometer input for my flipside view

    - by user308050
    I have an iPhone 3.1.3 app which has only 2 methods of input in its main view. It has an info button to switch to a flipside view, and the only other input it takes in the main view is accelerometer movement. I want to switch off the accelerometer input when in the flipside view but haven't been able to find out how. I have the main view controller set as an accelerometer delegate, but did not do the same for the flipside view controller, though I suspect that it inherited it from the main view controller. I am really new to xcode and objective c, I have been reading these forums and a couple of developer books, but if anyone has any tips on other good places to look, please let me know.

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  • CFBundleDocumentTypes and iPad camera connection kit (SD reader)

    - by Kendall Helmstetter Gelner
    I am trying to register a custom document type in an iPad app, with the hopes that I can be prompted to work with files on an SD card attached to the iPad through the camera connection kit. Does anyone know if this is currently possible (or even for sure if it's not possible)? I was hoping that the Camera tab in Photos would use a document interaction controller for types it did not understand, but it seems like Photos does not check for alternate handlers at all - I tried also registering support for the jpg type but was not prompted when using photos and loading in JPG images from an SD card. There is an SD reader app called Zoomit that appears to read many different types from an SD card: http://currentphotographer.com/zoomit-application-enabled-sd-card-reader-for-the-iphone/ But it seems that involves custom hardware, that differs from the standard SD reader.

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  • UIView Animation: PartialCurl ...bug during rotate?

    - by itai alter
    Hello all, a short question. I've created an app for the iPad, much like a utility app for the iPhone (one mainView, one flipSideView). The animation between them is UIModalTransitionStylePartialCurl. shouldAutorotateToInterfaceOrientation is returning YES. If I rotate the device BEFORE entering the FlipSide, everything is okay and the PartialCurl is displayed okay. But if I enter the FlipSide and then rotate the device, while the UIElements do rotate and position themselves just fine, the actual "page curl" stays with its initial orientation. it just won't budge :) Is it a known issue? am I doing something wrong? Thanks!

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  • setting enablesReturnKeyAutomatically on UISearchBar

    - by Erik Carlson
    Hi There, I'm writing for iphone OS 3.1.3. I want the search button in the keyboard from my UISearchBar to have the search button enabled all the time. If this was any old UITextField (not a search bar) the property would be enablesReturnKeyAutomatically. I have tried setting this using the example given at http://discussions.apple.com/thread.jspa?messageID=8457910 which suggests: UITextField *searchTextField ; searchTextField = [[searchBar subviews]objectAtIndex:0]; searchTextField.enablesReturnKeyAutomatically = NO ; Should work. unfortunately it crashes: 2010-05-20 08:36:18.284 ARemote[5929:207] *** -[UISearchBarBackground setEnablesReturnKeyAutomatically:]: unrecognized selector sent to instance 0x3b31980 2010-05-20 08:36:18.284 ARemote[5929:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UISearchBarBackground setEnablesReturnKeyAutomatically:]: unrecognized selector sent to instance 0x3b31980' I have also tried ((UITextField *)[(NSArray *)[searchBar subviews] objectAtIndex:0]).enablesReturnKeyAutomatically = NO;</code> Which gives similar results. Any ideas? Cheers Erik

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  • How to format float to 2 decimals in objective C

    - by iamdadude
    I have a string that I'm converting to a float that I want to check for values in an if statement. The original float value is the iPhone's trueHeading that is returned from the didUpdateHeading method. When I convert the original float to a string using @"%.2f" it works perfectly, but what I'm trying to do is convert the original float number to the same value. IF I just convert the string to [string floatValue] I get the same original float number, and I don't want that. To make it short and simple, how do I take an existing float value and just get the first 2 decimals?

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  • How can I detect touch events on a UIImageView inside a deep hierarchy of UIViews?

    - by jester
    I am developing a simple game on iPhone and I started with a View based application, and through the UIViewController I am loading a custom UIView that contains some more UIViews and some UIImageViews. I want to detect touch events on some of the UIImageViews, but I wasn't able so far. I've created a second project for testing purposes and figured that UIImageViews handle touch events when the hierarchy is like : UIViewController - UIView - UIImageView, but when it's like : UIViewController - UIView - UIView - UIImageView they are not detected. Notes: - userInteractionEnabled is YES in all cases - all UIViews and UIImageViews I mention above are custom subclasses. Can you think of any reason why, when a custom UIImageView gets deeper in the view hierarchy can't receive touch events?

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  • AVURLAsset cannot load with remote file

    - by Quentin
    Hi, I have a problem using AVURLAsset. NSString * const kContentURL = @ "http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"; ... NSURL *contentURL = [NSURL URLWithString:kContentURL]; AVURLAsset *asset = [AVURLAsset URLAssetWithURL:contentURL options:nil]; [asset loadValuesAsynchronouslyForKeys:[NSArray arrayWithObject:tracksKey] completionHandler:^{ ... NSError *error = nil; AVKeyValueStatus status = [asset statusOfValueForKey:tracksKey error:&error]; ... } In the completion block, the status is AVKeyValueStatusFailed and the error message is "Cannot Open". All exemples I have seen, use a local file, so maybe there is a problem using a remote file... Regards, Quentin

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  • Serialize struct with pointers to NSData

    - by leolobato
    Hey guys, I need to add some kind of archiving functionality to a Objective-C Trie implementation (NDTrie on github), but I have very little experience with C and it's data structures. struct trieNode { NSUInteger key; NSUInteger count, size; id object; __strong struct trieNode ** children; __strong struct trieNode * parent; }; @interface NDTrie (Private) - (struct trieNode*)root; @end What I need is to create an NSData with the tree structure from that root - or serialize/deserialize the whole tree some other way (conforming to NSCoding?), but I have no clue how to work with NSData and a C struct containing pointers. Performance on deserializing the resulting object would be crucial, as this is an iPhone project and I will need to load it in the background every time the app starts. What would be the best way to achieve this? Thanks!

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  • OpenGL ES Simple Undo Last Drawing

    - by Erika
    Hi Everyone, I am trying to figure out how to implement a simple "undo" of last drawing action on the iPhone screen. I draw by first preparing the frame buffer: [EAGLContext setCurrentContext:context]; glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer); I then prepare the vertex array and draw this way: glVertexPointer(2, GL_FLOAT, 0, vertexBuffer); glDrawArrays(GL_POINTS, 0, vertexCount); glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer); [context presentRenderbuffer:GL_RENDERBUFFER_OES]; How do I simple undo this last action? There has to be a way to save previous state or an built-in OpenGL ES function, I would think. Thanks

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  • MKMapView Route/Directions

    - by Mark
    I found that the Google Maps API supports Directions through: var map; var directionsPanel; var directions; function initialize() { map = new GMap2(document.getElementById("map_canvas")); directionsPanel = document.getElementById("my_textual_div"); map.setCenter(new GLatLng(49.496675,-102.65625), 3); directions = new GDirections(map, directionsPanel); directions.load("from: 500 Memorial Drive, Cambridge, MA to: 4 Yawkey Way, Boston, MA 02215 (Fenway Park)"); } So how can this be translated into Objective-C so it can be retrieved by the iPhone? I know how to draw a line on MKMapView I just need the geolocations for the route. Or perhaps there is a different way to get the route between two geolocation points. Please let me know, Thanks in advance.

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  • TTImageView not working

    - by Ajay Sawant
    Guys, I am new to IPhone and using following code to render the image from remote server using TTImageView from Three20 framework with the help of following code TTImageView* imageView = [[[TTImageView alloc] initWithFrame:CGRectMake(30, 30, 0, 0)] autorelease]; //Working OK //imageView.urlPath = @"http://prosares.co.cc/Images/background.jpg"; //No Working imageView.urlPath = @"http://prosares.co.cc/Images/backgroundTest.jpg"; [self.view addSubview:imageView]; As shown above if I am trying to load background.jpg it's getting loaded correctly but for some reason backgroundTest.jpg is not loading at all. the only diffrance in these images are the size, is there any restriction on the image size that I can load in TTImageView ? Can someone please help me to debug this issue? Thanks Ajay Sawant

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  • UIScrollView and UIImage in it with paging enabled

    - by Infinity
    Hello guys! I need to display 10 - 1000 images on a UIScrollView. Paging is enabled. So every page of the scrollview is an image, it is an uiimage. I can load 10 images to 10 uiimages which stays in the memory, but with 1000 images I have problems on the iPhone or on the iPad. I am trying to unload and then load the images when I am doing scrolling. I every time displays 3 images. The current page image, and the -1 and +1 pages. When I am scrolling I unload the image and then load the next. With this method I have two problems. The scrolling is laggy and if I scroll very fast the images don't appear. Maybe is there any good solution for these problems? Can you suggest me one?

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  • Cocos2d:How to Zoom-in Zoom-out effect on a Sprite image?

    - by user187532
    Hello everyone, I am developing module where-in i pick the image from photo library and put into a Sprite. I want to implement Zoom-in, Zoom-out kind of effect for a Sprite image, same like camera album images zoom in/out effect. Could someone please guide me how do i implement it? I see somewhere is that, i have to detect two touch events in TouchBegan and then Adjust the Sprite Scale size to up or down based on the distance of two fingers touch event values. Could someone please tell me, How do i detect two fingers touch values in TouchBegan? How to allow to touch and Zoom-in/out of Sprite image by user? Please give me samples. I tried already some stuff (http://groups.google.com/group/cocos2d-iphone-discuss/browse_thread/thread/61808fd6b578e5e1?hide_quotes=no&utoken=9AdrAzkAAABFNHPPibbeOSHIuKOkxTWQ066onEraO3W2r08xbUjNmAwT6_SsyC2n0d69MF_vYn77vPb7MuI5eIWgjrXT32Kd) but doesn't work for my requirement. Thank you.

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  • storekit In app purchase invalid product identifiers

    - by Sridhar
    Hello, I am getting zero product identifiers from SKProductsRequest I did the following steps a) created a In App Purchase Test User account under 'Manage Users' in iTunes Connect b) created some in app purchase products under 'Manage Your In App Purchases'. c) Loaded the app onto the iPhone, went to Settings-Store and logged out of the regular store d) set a breakpoint in the (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response callback All the submitted Product ID's are in the response.invalidProductIdentifiers category. When submitting the request I use either the Product ID's used under b) directly or I tried to prefix them with the Bundle ID: Thanks In Adavance Raghu,

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  • What is the "stringWithContentsOfURL" replacement for objective C?

    - by Graeme
    I found a tutorial on the net that uses the stringWithContentsOfURL command that is now deprecated as of iPhone OS 3.0. However I can't find out what I'm meant to use instead, and how to implement it. Below is the code surrounding the stringWithContentsOfURL line in case you need it for reference. NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@&output=csv", [addressField.text stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSString *locationString = [NSString stringWithContentsOfURL:[NSURL URLWithString:urlString]]; NSArray *listItems = [locationString componentsSeparatedByString:@","]; Thanks.

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  • Core Data grouping data in table

    - by OscarTheGrouch
    I am using core data trying to create a simple database app, I have an entity called "Game" which has a "creator". I have basically used the iPhone table view template and replaced the names. I have the games listed by creator. Currently the tableview looks like this... Chris Ryder Chris Ryder Chris Ryder Chris Ryder Dan Grimaldi Dan Grimaldi Dan Grimaldi Scott Ricardo Tim Thermos Tim Thermos I am trying to group the tableview, so that each creator has only one cell in the tableview and is listed once and only once like this... Chris Ryder Dan Grimaldi Scott Ricardo Tim Thermos any help or suggestions would be greatly appreciated.

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