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• Problems with testing in app purchases

  - by sashaeve

  I am trying to test my application with in app purchases. I created features, test user, logged out from iTunes on the iPhone and used developer certificate. Load app from XCode in debug mode. When I click "Buy" button I pass all checks for internet availability, canMakePayments and call SKPayment *payment = [SKPayment paymentWithProductIdentifier:featureId]; [[SKPaymentQueue defaultQueue] addPayment:payment]; But all what I see is a pending view and after some minutes it failed in - (void) failedTransaction: (SKPaymentTransaction *)transaction { if (transaction.error.code != SKErrorPaymentCancelled) { NSLog(@"failedTransaction"); } [[MKStoreManager sharedManager] paymentCanceled]; [[SKPaymentQueue defaultQueue] finishTransaction: transaction]; } Please advice in what direction I should go to figure out the problem and what else I should check. P.S. All related questions on SO were checked with no luck.

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• Is there a way to create custom UIDataDetectorTypes?

  - by KingAndrew

  Hi All, What I am trying to do is create tooltip functionality so that certain words in my instructional app can be tapped and the definition pops up. For the popup part I plan on using code from “AFInformationView” which provides bubbles on the iPhone. The part I'm struggling with is how to associate A particular word's location with the bubble. Currently I have the text on a UILabel that is on a custom UITableCell. Since I calculate the row height on the fly with: [textToUse sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:CGSizeMake(stop-start, 500)]; I'm not sure what the coordinates for a specific word will be. I was thinking that if I created a custom DataDetectorType that could be the fix. If anyone knows how to do this or has any other ideas I would be happy to hear them. Thanks, Andrew

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• [OpenGL] I'm having an issue to use GLshort for representing Vertex, and Normal.

  - by Xylopia

  As my project gets close to optimization stage, I notice that reducing Vertex Metadata could vastly improve the performance of 3D rendering. Eventually, I've dearly searched around and have found following advices from stackoverflow. Using GL_SHORT instead of GL_FLOAT in an OpenGL ES vertex array How do you represent a normal or texture coordinate using GLshorts? Advice on speeding up OpenGL ES 1.1 on the iPhone Simple experiments show that switching from "FLOAT" to "SHORT" for vertex and normal isn't tough, but what troubles me is when you're to scale back verticies to their original size (with glScalef), normals are multiplied by the reciprocal of the scale. Then how do you use "short" for both vertex and normal at the same time? I've been trying this and that for about a full day, but I could only go for "float vertex w/ byte normal" or "short vertex w/ float normal" so far. Your help would be truly appreciated.

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• Saving data so it can be loaded locally

  - by Thomas Joos

  hi guys, i'm working on iphone application which needs to run offline at an exhibition. It should present data, stored local because there is no internet at the booth. Still, to easily have content updates it should be able to update it's content once connected to internet. It's quite some data ( around 300 full lines of text ) and I want it to be loaded, stored and visualized as optimized as possible. What's the best way to load in content once connected and how should I store it on the device?

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• Image coding library

  - by Dmitry

  Is there any good library for lossless image encoding/decoding that has compression rate more or less similar to PNG but decoding to raw RGB bitmap data would be much faster than PNG? Also alpha transparency is needed, but not essential because, alpha channel could be taken from separate image. Original problem lies in slowness of reading and decoding PNG files on iPhone using standard libraries. Obvious and the simples solution would have been storing raw RGB bitmap data, but then size of unpacked ipa is too large - 4 times larger than PNG files. So, I am trying to find some compromise solution.

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• get SSL Broken pipe error when try to make push notification

  - by emagic

  We develop an iPhone app, and have push notification for development and ad hoc version working properly. But when we try to send push notification to real user devices in our database, we got SSL connection reset, then Broken pipe error. We think maybe there are too many devices in our database (more than 70000), so it is failed to send all messages at the same time. So we try to send messages to 1000 devices once, but still got this "Broken pipe" error for around 100 messages. And we are not sure whether the messages have been send. Any suggestion?

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• Does SQLite handle non-English locales out of the box?

  - by Andrey Tarantsov

  I have noticed that Google Toolbox for Mac replaces several SQLite built-in functions (LOWER/UPPER, LIKE, GLOB) with its own versions that handle string locales better. So, question to everyone who has SQLite experience: have you ever had any problems with non-English locales in SQLite? Does one really have to do something to properly handle non-English alphabets? What kinds of problems are expected if I use SQLite APIs as-is? (I'm going to use SQLite on the iPhone, but I guess it's the same across all platforms. I've been using Core Data previously and never had any problems, but this time I want to switch to non-ORMed db access.)

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• Weird Scrolling Issue Using UITableView

  - by Scott Elder

  I am a working UINavigationController pushing two different UITableViews on and off the stack. All of my functionality is working correctly except scrolling. When either table is scrolled above the top row, or below the bottom row, it stays there exposing the margin above/below the table. I am looking for the table to "bounce" back so that only the table is visible and not the white space area beyond - just like any other iPhone app. One of my UITableViews is being loaded by NIB and the other is being created programatically - both of which have the exact same result. I have tried all the bounce and scrolling settings in the Nib, but nothing seems to work. Can someone tell me what I am doing wrong? Please let me know if I can be more specific in detailing my problem. Thanks, -Scott

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• OAuth2 Flow for Mobile Devices

  - by Bart Jedrocha

  We're currently working on an API that will be consumed by a variety of different devices. We want to use the OAuth2 spec as it defines several flows which were not available in the original OAuth spec. My question is, what flow would work best for a mobile device such as the iPhone or iPad? What flow does an application like TweetDeck use? Looking around the web it seems clients like TweetDeck use the 'Username and Password Credentials Flow" (browserless token exchange). Can anyone provide more information on this topic?

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• Add UIView behind UITableView in UITableViewController code

  - by Drew C

  I would like to use a fixed image as the background in a simple grouped table view in my iPhone program. Unfortunately, no matter what I do, the background is always solid white. I have followed several supposed solutions on this site and others to no avail. Here is the relavant code in the viewDidLoad method of the table view controller class (note, this code uses a solid blue color rather than an image for simplicity's sake): self.tableView.opaque = NO; self.tableView.backgroundColor = [UIColor clearColor]; UIView *backgroundView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)]; backgroundView.backgroundColor = [UIColor blueColor]; [self.tableView.window addSubview:backgroundView]; [backgroundView release]; I suspect that I am not positioning the backgroundView view in the right place. I have tried sendToBack:, bringToFront:, and others but I always just get a white background. Is it possible to do this from within the UITableViewController? Must I use Interface Builder?

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• Looking for Suggestion on Multi-Consumer Service Development

  - by DaveDev

  How would I model a system that needs to be able to provide content in a format that would be consumable by iphone, Android or web browser (or whatever). All a new consumer would have to do is build a UI with rules on how to handle the data. I'm thinking something RESTful returning JSON or something. I'm really looking for suggestions on the kinds of things I'd need to learn in order to be able to implement a system on this scale. As an ASP.NET MVC developer, would that be the best framework/archetectrue to go with? Thanks

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• Streaming audio - where to start?

  - by Adam Davis

  I need to develop an embedded audio streaming server. Requirements: Voice quality or better Intended for low power wifi transmission Broad support in existing software and devices (ie, windows media player, quicktime, vlc, iPhone, Android, etc). Royalty/patent free, or cheap to license Preferences: Low overhead TCP/IP based streaming protocol Voice grade codec (easy to implement in software, no DSP, 32bit CPU if needed) Would be nice if it supported HTML5 browsers, but is there any codec (such as raw) that is supported by the latest browsers that is lower overhead than MP3? Therefore: What are the relevant streaming protocols I should be looking at? What are the relevant codecs I should be looking at? What transport streams should I be looking at? What am I missing, or where else should I be looking for this type of need?

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• Malloc to a CGPoint Pointer throwing EXC_BAD_ACCESS when accessing

  - by kdbdallas

  I am trying to use a snippet of code from a Apple programming guide, and I am getting a EXC_BAD_ACCESS when trying to pass a pointer to a function, right after doing a malloc. (For Reference: iPhone Application Programming Guide: Event Handling - Listing 3-6) The code in question is really simple: CFMutableDictionaryRef touchBeginPoints; UITouch *touch; .... CGPoint *point = (CGPoint *)CFDictionaryGetValue(touchBeginPoints, touch); if (point == NULL) { point = (CGPoint *)malloc(sizeof(CGPoint)); CFDictionarySetValue(touchBeginPoints, touch, point); } Now when the program goes into the if statement it assigns the 'output' of malloc into the point variable/pointer. Then when it tries to pass point into the CFDictionarySetValue function it crashes the application with: Program received signal: “EXC_BAD_ACCESS”. Someone suggested not doing the malloc and pass the point var/pointer as: &point, however that still gave me a EXC_BAD_ACCESS. What I am (and it looks like Apple) doing wrong??? Thanks in advance.

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• -sizeWithFont Functions Differently on Device

  - by LucasTizma

  So I am seemingly encountering some strange behavior when using NSString's -sizeWithFont family of method calls depending on whether or not I'm invoking it on the iPhone Simulator or an actual device. Simply enough, when the receiver of the -sizeWithFont method call is nil, the resulting CGSize passed back on the Simulator is {0, 0}. However, on the device, it is the size of the bounding rectangle I specified in the method call. See the following log statements: Simulator: someString: (null) someStringSize: {0, 0} Device: someString: (null) someStringSize: {185, 3.40282e+38} The behavior on the Simulator is what I would expect. Not that this issue is difficult to circumvent, but 1) I'm a little confused why this family of functions would behave differently on the Simulator and an actual device, and 2) why does calling a method on a nil receiving return a particular result? Thanks for any pointers or insight you guys can provide! EDIT: I suppose I should mention that I'm building against the 3.1 SDK.

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• Interface Builder "Simulate Interface" not working

  - by bpapa

  I am using Interface Builder to play around with some ideas. I never noticed that there is a "Simulate Interface" feature which apparently will render the nib in the iPhone simulator. So, I created a view, put one component in there (a Segmented Control), saved it, selected "Simulate Interface", the simulator launched but... nothing rendered in the simulator. Just a black screen. I thought maybe my nib wasn't complete enough, so I've tried it with all of my old nibs and I'm having the same problem with all of them. None of them render in the simulator at all. Is there some trick that I'm missing?

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• Resources check

  - by Chris

  hey I am frequently uploading my XCode iPhone projects to an svn repository to be build on another machine. My problem is that when I add resources to my project sometimes I forget to add the resource as relative to the project. I know one answer is to be more careful (not easy when your tired!) but if there was a way to run a script to check my resource paths are relative when I build and warn me if they are not it would be a great time saver for me. How would I go about doing this? Thanks Chris

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• Building MobileVLCKit from git.videolan.org repository on macOsX with XCode

  - by ztepsic

  I would like to make an application for iOS(iPhone and iPad) that can play streaming videos through RTSP protocol (that includes mms). I imagined to achive a specified application using VLC player or libVLC library. On the official vlc git repository (http://git.videolan.org/?p=vlc.git;a=tree) in projects/macosx/framework/ folder there is xcode project MobileVLCKit.xcodeproj for which I assume that is a somewhat usable VLC framework for iOS. Now the problem is that I can't/don't know how to build this project. When I try to build MobileVLCKit.xcodeproj I get an error that says it can't find files inside extras/contrib/hosts/i686-apple-darwin10/ios/ folder. I have looked within that folder (extras/contrib) and managed to create folder (with files) extras/contrib/hosts/i686-apple-darwin10/ with make, but there is no ios folder. So, does anybody knows how to successfully build MobileVLCKit?

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• Overlay image/map on MapView?

  - by CCDEV

  Okay, hope you can help med here :) I have been searching everywhere to figure this out, but haven't had any luck. I know about Annotations and how to overlay them on a map on the iPhone. But what if I have location like in the forest where there arent any roads or anything. What I am asking is, how can I overlay a custom image (map) over the Map view so that it zooms the right way like the map, in the right scale, and can I add my own annotations on top of the custom image/map? Hop I was clear enough on what I am trying to do?

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• Add shading to clipped UIView

  - by huggie

  I'm creating an iphone application. I have this UIView whose content is clipped with a path. I want to add shading and/or shadow to it. What's the best way to do this? For shadow, I tried CGContextSetShadow() but it doesn't seem to have an effect (perhaps it's drawing outside the shown region?) . How about shading? I want it to appear along the path. What's the best way to go about it? Is it to create another narrow clip strip along the original clipping path (if it's possible to have two clip path... ) Or does this need to be done in another CALayer? I am not even sure what that is yet.

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• Core Data inserting objects

  - by Joe

  I'm trying to get my head around Core Data on the iphone. This is code from Apple's 'Navigation based app using Core data' template (method - insertNewObject) // Create a new instance of the entity managed by the fetched results controller. NSManagedObjectContext *context = [fetchedResultsController managedObjectContext]; NSEntityDescription *entity = [[fetchedResultsController fetchRequest] entity]; NSManagedObject *newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:[entity name] inManagedObjectContext:context]; It seems completely counter intuitive to me that the fetched results controller is used when inserting a new object. I changed the code to this: NSEntityDescription *entity = [NSEntityDescription entityForName:@"Event" inManagedObjectContext:managedObjectContext]; NSManagedObject *newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:[entity name] inManagedObjectContext:managedObjectContext]; which works just as well and does not require access to the fetch request. Am I missing something here? Is there any good reason to use the fetched results controller in the insert method?

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• URL Encoding of Characters in a password field

  - by Alavoil

  I am trying to pass login credentials to a PHP script that I have in my iPhone app. When I pull a password with special characters the password is missing certain characters especially the percent sign. I am trying to encode the text but even before I send it, the percent sign is missing. //password_field is a UITextField holding the password: !@#$%^&*() NSString *tmpPass = [password_field.text stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSLog(p_field.text); NSLog(tmpPass); This is what appears in the console: !@#$^&*() [email protected]&*() Is there any reason why it would be dropping the percent sign?

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• Adding another view to a view based application

  - by Joy

  Hi, I'm developing an iphone apllication that stores some data into a database. That is working fine. But now i have a problem when i want to show the data. Because to show the data i need to design another view. But i'm facing problem when i try to add another view.Is it possible to have multiple view in a view-based application,cause my application is a view-based application? If yes then how to do that? Please help me Thanks in advance Joy

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• Inserting nil Values into Sqlite Database?

  - by Chris

  I am working on an iPhone App where I am pulling data from an XML file and inserting it into a sqlite database located in the App. I am able to successfully do this process, but it appears that if I try to sqlite3_bind_text with a NSString that has a value of "nil", the App quickly dies. This is an example of code that fails: (modified for this example) // idvar = 1 // valuevar = nil const char *sqlStatement = "insert into mytable (id, value) VALUES(?, ?)"; sqlite3_stmt *compiledStatement = nil; sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL); sqlite3_bind_int(compiledStatement, 1, [idvar intValue]);; sqlite3_bind_text(compiledStatement, 2, [valuevar UTF8String], -1, SQLITE_TRANSIENT);

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• Chipmunk physics: Velocity question

  - by Johannes Jensen

  I'm making an iPhone game where the main actor is a ball that rolls depending on the device's accelerometer rotation. I haven't started on this part of the coding yet, but I was wondering if you guys had a nice way of solving this: I tried looking a little into chipmunk, and I noticed that bodies have the property v, which is a point containing x and y velocities. I was thinking it'd be a bad idea to just do like: playerBody->v = ccp(accelerometer.x * 5, playerBody->v.y); because it'd just roll up of walls and stuff, is there a better solution to do this?

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• Why does GANTracker outputs an error "GANTracker.m" not found?

  - by favo

  Hi, I have used the Google Analytics Tracker in a previous iPhone OS project. Everything was working fine and I copy & pasted the GANTracker Library and the Tracker initialization. When starting my new project it tells me: Xcode could not locate source file: GANTracker.m (line: 177) To tell the truth, I don't know where to start to debug this one. I have included the library using #import "GANTracker.h". The error message occurs right within the application didFinishLaunchingWithOptions and does not seem to have any connection to what is really going on. If I set the breakpoint to [window makeKeyAndVisible]; for example and wait a second, it occurs right after that. That makes it look like there is something in the background going on with the GANTracker. The Tracker itself is created a little later by: [[GANTracker sharedTracker] startTrackerWithAccountID:@"xx" dispatchPeriod:10 delegate:nil]; [[GANTracker sharedTracker] trackPageview:@"pageview" withError:nil]; Thank you all in advance for your help!

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