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  • Using ModalAlert from cookbook - app does not load

    - by user127091
    I'm using iphone cookbook code to prompt a user for text in a UIAlertView. The cookbook code is available at http://github.com/erica/iphone-3.0-cookbook-/tree/master/C10-Alerts/03-Soliciting%20Text/ In my AppDelegate, applicationDidFinishLaunching(), I invoke as below NSString *str = [ModalAlert ask:@"what is your name?" withTextPrompt:@"ATTUID"]; But my app does not finish loading at all. I get a black screen indefinitely. There are no messages in the console. I tried creating just a UIAlertView with UITextField in the above function and it displays properly. (commenting out her code) Commenting out "CFRunLoopRun()" also loads the app. I'm probably doing something stupid but can't seem to figure it out.

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  • Accessing an owners variable

    - by Dyldo42
    Okay, I have a ViewController that has 12 UIButtons as instance variables, and they are created in interface builder. I want to access another variable in the viewController from the UIButton's init method. Is that possible? By the way, I'm writing in Objective-C in the iPhone SDK. Cheers.

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  • NSStrings, C strings, pathnames and encodings in iPhone

    - by iter
    I am using libxml2 in my iPhone app. I have an NSString that holds the pathname to an XML file. The pathname may include non-ASCII characters. I want to get a C string representation of the NSString for to pass to xmlReadFile(). It appears that cStringUsingEncoding gives me the representation I seek. I am not clear on which encoding to use. I wonder if there is a "default" encoding in iPhone OS that I can use here and ensure that I can roundtrip non-ASCII pathnames.

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  • Creating your own UTI for an iOS app.

    - by Kalle
    Hello all, The app I'm developing has a custom file format for its files, and I'd like to be able to use the "Open In ..." feature of iOS which lets users e.g. email each other a file and then open it directly in the app. I've gotten as far as adding the CFBundleDocumentType stuff in the Info.plist file, but the problem is the LSItemContentTypes. From what I've read, I need to provide the actual file as a UTI, rather than just saying ".myfileextension", and I can't find a lot about how to create UTI's in a iOS app. Anyone know?

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  • googlemap zoom in iphone application

    - by Filthy Night
    Hi all, i have a problem in iphone application that i have integrated google map and i am calculating center runtime so that the map shows both points on the iphone screen, the alogrithm applied (thanks to stackover flow) is working fine in case of 2 locations very far from each other. But it is not working for near locations and the zoom level goes too much that it is not able to show any images of those two near locations, so i want to put a check that if the location are very near to each other OR the google is not able to show the maps of the locations then it choose the default zoom level so that it shows the map on the screen instead of blank / black screen. Thanks in advance

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  • problem with NSInputStream on real iPhone

    - by ThamThang
    Hi guys, I have a problem with NSInputStream. Here is my code: case NSStreamEventHasBytesAvailable: printf("BYTE AVAILABLE\n"); int len = 0; NSMutableData *data = [[NSMutableData alloc] init]; uint8_t buffer[32768]; if(stream == iStream) { printf("Receiving...\n"); len = [iStream read:buffer maxLength:32768]; [data appendBytes:buffer length:len]; } [iStream close]; I try to read small data and it works perfectly on simulator and real iPhone. If I try to read large data (more than 4kB or maybe 5kB), the real iPhone just can read 2736 bytes and stop. Why is it? Help me plz! Merci d'avance!

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  • ipad simulator - sandbox area

    - by Mike
    Every iPhone/iPad application has its sandbox area, where I can store files. When I use the simulator this area will be somewhere in the hard disk. Is it possible to see this directory and its contents for a given application? I am debugging an iPad app and it will be a lot easier if I can see the sandbox area contents in real time, as the app runs and creates files there. Where do I find it? thanks for any help.

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  • iPhone check for a constant at runtime in universal app

    - by joshue
    I'm making a universal iPad/iPhone app which can use the iPad's VGA out connector to mirror the content of the app on an external screen. However, the iPhone does not have this functionality. given the following code, [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(screenInfoNotificationReceieved:) name:UIScreenDidConnectNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(screenInfoNotificationReceieved:) name:UIScreenDidDisconnectNotification object:nil]; I get this error on the phone at launch (works fine in ipad) "dyld: Symbol not found: _UIScreenDidConnectNotification" presumably because UIScreenDidConnectNotification doesnt' exist yet in 3.13. How do I check for this at runtime?

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  • What resources to look to in order to write an emulator for iPhoneOS?

    - by Roman Kagan
    What are available resources I should look to in order to write an emulator for iPhoneOS? I'd like to write an emulator to run applications written for MacOS. I understand that I won't be able to use file system and other OS resources. I do have an SDK, XCode and all documentation for those resources, but I wonder if I can find some examples (perhaps similar to the emulator that can run Ninetendo games on iPhone)?

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  • How to render consistence and smooth moving animation on iphone / ipod / iphone simulator.

    - by shakthi
    I am trying render a simple animation(object movement animations) on iphone. I used opengl for object rendering. Movements appears to be smooth on the simulator. But if I used same code in the ipod, object movement is slower. In the iphone it is still slower. I googled a bit and found 'frame rate independent rendering method', which taught me the concept of 'time interval' and object movement based on it. However result is very unpleasant. There is a lot of jerk in the animation even when fps remains above 20. Following code fragment is used for calculation of time interval between successive frames and I am using that to move my animation. NSTimeInterval GetTimeIntervals(NSTimeInterval * inLastElapsedTime ) { NSTimeInterval intervalTime = 0; NSTimeInterval currentTime = [NSDate timeIntervalSinceReferenceDate]; if(*inLastElapsedTime != 0 ) { intervalTime = currentTime - *inLastElapsedTime; } *inLastElapsedTime = currentTime; return intervalTime; }

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  • iPhone not returning to application after calling eMail send

    - by Bill
    I am sending an email from within my iPhone application. The eMail page pops up ok, I click on the Send button, the iPhone plays a whoosh sound, and the eMail actually arrives at the recipient. Unfortunately, the mail dialog still sits there unresponsive, and the only option - to click the home button - kills the app. Is there something else that needs to be specified to close the eMailMessage view? MFMailComposeViewController *eMailMessage; NSArray *toAddress; if ([MFMailComposeViewController canSendMail]) { toAddress = [NSArray arrayWithObject:@"[email protected]"]; eMailMessage = [[MFMailComposeViewController alloc] init]; [eMailMessage setToRecipients:toAddress]; [eMailMessage setSubject:@"Notification"]; [eMailMessage setMessageBody:@"Performed by ..." isHTML:NO]; [self presentModalViewController:eMailMessage animated:YES]; [eMailMessage release]; }

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  • problem when migrating from development into live server

    - by justjoe
    I'm facing problem when migrate my web app project from development server to live server. the reason is because i just realize that the live server has different PHP version and available memory lower then mine. i found this after client give me their ftp and cpanel access of their server, which is a shared host. so, how do we handle this situation ? and avoid similar problem in the future ? What is the most suitable configuration of a development server ? btw, i use xampp in windows. it's has apache and mysql.

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  • Getting WAP embedded video in android AND iphone?

    - by Jon
    Recently a client asked me to make their site "work on smart phones", which normally wouldn't be too much of an issue... However it's a video site, and I have absolutely no idea where to even begin. Right off the bat I'm not even going to consider allowing the site to even function in anything other than Android (Maybe even 2.0+) and iPhone, maybe Blackberry and WinMo. But beyond that... What do I do? I'm looking at using the tag, however I'm unsure what, if any, codecs which phone uses. Is HTML5 even adopted in their browsers yet? Could someone please point me in the right direction? Am I going about this the right way, using the tag? Or is there some magical html element both iPhone and Android (And BB and WMo) that lets them run video in their native video players (Like on youtube).

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  • Iphone resize doubt

    - by dragon
    Hi, I have create a view based application and its loaded correctly what i designed in the xib files.My doubt is when i designed uiview it has the property of resize its frame size(autoresize). But when i loaded the application into iphone the uiview has not the property of resize its frame automatically.Is it possible to change a uiview automatically in iphone (when application loaded)? (or) We can change the frame size of the uiview for every touches moved event. Can anyone help me ? Thanks in advance.......

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  • What's the easiest way to get an iPhone 3GS movie into iMovie?

    - by bpapa
    It seems like the steps right now are: Shoot movie sync iPhone with Mac via iTunes Open iPhoto Import photos from iPhone into iPhoto Open iMovie (or retart if it was already running) On startup, iMovie detects videos in iPhoto and imports them. Yikes. Is there an easier way? It's a bit odd that the videos are handled as photos, in the first place. And no, I'm not jailbreaking my iPhone simply to save me a few of these steps.

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  • Google App Engine Database Index

    - by fjsj
    I need to store a undirected graph in a Google App Engine database. For optimization purposes, I am thinking to use database indexes. Using Google App Engine, is there any way to define the columns of a database table to create its index? I will need some optimization, since my app uses this stored undirected graph on a content-based filtering for item recommendation. Also, the recommender algorithm updates the weights of some graph's edges. If it is not possible to use database indexes, please suggest another method to reduce query time for the graph table. I believe my algorithm does more data retrieval operations from graph table than write operations. PS: I am using Python.

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  • Why do I have a memory leak in UIApplication

    - by saintmac
    I have an iphone app project. I analysed it using instruments memory leak tool. According to instruments I have 2 leaks the Trace is as follows: start main UIAplicationMain _run CFRunLoopInMode CFRunLoopRunSpecific PurpleEventCallback _UIAplicationHandleEvent sendEvent: handleEvent:withNewEvent: After this trace there are two separate traces. What causes this and how can I fix it?

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  • Audio/Voice Visualization

    - by Neurofluxation
    Hey you Objective-C bods. Does anyone know how I would go about changing (transforming) an image based on the input from the Microphone on the iPhone? i.e. When a user speaks into the Mic, the image will pulse or skew. Thanking you!!

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  • Linker Error: iPhone Unit Test Bundle referencing App classes

    - by ohhorob
    Starting with an app already in development, I have carried out the instructions in the iPhone Development Guide – Unit Testing Applications I can successfully include and use my App's classes in Application-style tests that run on the device, and output their results to the console. If I add the following line of code: STAssertTrue([viewController isKindOfClass:[LoginViewController class]], @"Top view controller is not LoginViewController"); The following build error is generated: Undefined symbols: "_OBJC_CLASS_$_LoginViewController", referenced from: __objc_classrefs__DATA@0 in LoginViewTest.o ld: symbol(s) not found collect2: ld returned 1 exit status I can provide more configuration information for the project and the Testing target, but the setup works file without the [LoginViewController class] line in the test source. Without that line, I can reference the class, use it's properties and send it messages successfully. Is there a linking build setting, or bundle loading option that is required when attempting to use an App class in this fashion? Or should I find another type of test to confirm that the class of an object is the expected one?

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