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• What is the difference between #ifdef __IPHONE_3.2 and #if __IPHONE_3.2?

  - by Jonathan

  Hi, I have an iphone app that needs to work for 3.1.3 for the iPhone and 3.2 for the iPad. It is an iPhone app that I want to work on the iPad. The main difference is the MPMoviePlayerController which introduces/and deprecates lots of things in 3.2. Since, the iPhone OS only goes up to 3.1.3 and the iPad is on 3.2, I need to seperate my code so it only compiles the required code for the respective OS. I can't use [[UIDevice currentDevice] model] because I end up with deprecated warnings on the 3.1.3 code. Also, UIUserInterfaceIdiomPad is new in 3.2 so it doesn't work well with 3.1.3... So, I decided to use this, which only compiles what is necessary for the particular OS: #if __IPHONE _3_2 //do 3.2 iPad stuff #else //do 3.1.3 iPhone/iPod Touch stuff #endif My question is... What is the difference between these? #ifdef __IPHONE_3_2 and #if __IPHONE_3_2 Thank you

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• iWebKit/iPhone: Chatbox with MySQL, AJAX, PHP and Javascript

  - by YourComputerHelpZ

  Hello, i am busy with a chatbox that contains MySQL, AJAX, PHP and Javascript. Now i want to have this on my iPod Touch/iPhone, so i am building a website with iWebKit. The following codes i provided is done now; just asking why it does not display the chatbox itself (so not the senders) after more than 2 lines are entered... What codes should i add or remove... Thanks. I guess something with CSS or so, but i am not sure where i should apply it and what... Or maybe something else? Download .zip here with all files

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• Why does by iPhone App cannot load NSURL when linked against iPhone OS SDK 4.0 and run on iPhone OS

  - by Tichel

  I have an iPhone App linked against iPhone SDK 4.0 but as deployment target I selected OS 3.1. When I start the application on my iPod touch running 3.1.3 I get an error that the class NSURL cannot be found: dyld: Symbol not found: _OBJC_CLASS_$_NSURL Referenced from: /var/mobile/Applications/21ECAA8E-8777-4020-82F5-56C510D0AEAE/myTracks4iPhoneOS.app/myTracks4iPhoneOS Expected in: /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation in /var/mobile/Applications/21ECAA8E-8777-4020-82F5-56C510D0AEAE/myTracks4iPhoneOS.app/myTracks4iPhoneOS Data Formatters temporarily unavailable, will re-try after a 'continue'. (Not safe to call dlopen at this time.) mi_cmd_stack_list_frames: Not enough frames in stack. mi_cmd_stack_list_frames: Not enough frames in stack. When I declare CoreFoundation as weak framework then I am able to start the App. But the class NSURL itself does not work. Any idea? Thanks, Dirk

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• What is the iPad user agent?

  - by Yoric

  Now that the iPad craze is officially open, it's time to think websites also for the iPad. From what I gather, the iPad is using iPhone OS, but with a different screen resolution from the iPhone/iPod touch. So suddenly, the assumption that iPhone OS = iPhone screen resolution becomes false. Sounds like many sites may have to revise their user-agent - css mapping. So, can anyone with access to the iPad or the iPad SDK give us the user-agent string? Thanks in advance.

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• CoverFlow- Flip when selected

  - by Suresh Varma

  Hello all... i am working on an application which uses the iPod like application in iPhone.. I have implemented the Coverflow. But the main problem now is when we select any image it must flip and then i have to display the detail of that image... and when clicked on detail it must flip again and the same image must get displayed... Working on this from a long but still no success.. Please help.. Thanx in advance.. Note: if the question is unclear or if u want any code regarding please ask i will post it over her..

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• set date error on uidatepicker

  - by Matt Facer

  Hi guys, I've been stumped by the code below. I pass a string date to a UIDatePicker which seems to work on most devices, yet on some, it crashes the app. here's the code NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init]; [dateFormat setDateFormat:@"HH:mm"]; NSDate *date = [dateFormat dateFromString:dateStr]; [timePicker setDate:date]; [dateFormat release]; I have a function which passes the "dateStr" variable, as follows, dateStr = @"0:0"; I cannot see what's wrong - as it works for me! (iphone 3.1.3) but it doesnt work for my tester (ipod touch 3.1.3) Can anyone see anything wrong with the code? Thanks v much. any ideas?

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• Objectiveflickr set properties, more than one call

  - by user295944

  I cant to set Meta and set Location in ObjectiveFlickr if I do only one it works fine, but if I do both it only does the first one - (void)flickrAPIRequest:(OFFlickrAPIRequest *)inRequest didCompleteWithResponse:(NSDictionary *)inResponseDictionary { NSLog(@"%s %@ %@", PRETTY_FUNCTION, inRequest.sessionInfo, inResponseDictionary); if (inRequest.sessionInfo == kUploadImageStep) { snapPictureDescriptionLabel.text = @"Setting properties..."; NSLog(@"%@", inResponseDictionary); NSString *photoID = [[inResponseDictionary valueForKeyPath:@"photoid"] textContent]; flickrRequest.sessionInfo = kSetImagePropertiesStep; [flickrRequest callAPIMethodWithPOST:@"flickr.photos.setMeta" arguments:[NSDictionary dictionaryWithObjectsAndKeys:photoID, @"photo_id", @"Snap and Run", @"title", @"Uploaded from my iPhone/iPod Touch", @"description", nil]]; flickrRequest.sessionInfo = kSetImagePropertiesStep; [flickrRequest callAPIMethodWithPOST:@"flickr.photos.geo.setLocation" arguments:[NSDictionary dictionaryWithObjectsAndKeys:photoID, @"photo_id",@"34" ,@"lat",@"-118",@"lon", nil]]; } else if (inRequest.sessionInfo == kSetImagePropertiesStep) { [self updateUserInterface:nil]; snapPictureDescriptionLabel.text = @"Done"; [UIApplication sharedApplication].idleTimerDisabled = NO; } }

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• Trying to compile MobileSubstrate addon - Undefined symbol

  - by eWolf

  Hi! I went through this tutorial to create a MobileSubstrate addon. I could compile the example hook without errors. But as soon as I add #import <SpringBoard/SBAwayController.h> in ExampleHookProtocol.h and SBAwayController *awayController = [SBAwayController sharedAwayController]; in ExampleHookLibrary.mm (as the first line of the __$ExampleHook_AppIcon_Launch function) I get the following error message when attempting to make (triggered by the latter change): Undefined symbols: "_OBJC_CLASS_$_SBAwayController", referenced from: __objc_classrefs__DATA@0 in ExampleHookLibrary.o ld: symbol(s) not found collect2: ld returned 1 exit status make: *** [ExampleHook.dylib] Error 1. The header file for SBAwayController is located in /var/toolchain/sys30/usr/include/SpringBoard, just like SBApplicationIcon.h, which is used by the ExampleHook. I'm compiling on my iPod touch 2G. Can anyone help me? Thanks in advance, Eric

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• (iPhone) Instruments can't "Attach to Process"

  - by AlexLive

  Actually, I'm using a second generation Ipod Touch. What I'm trying to do is to debug my app on XCode and look for any memory leaks on Instruments at the same time. Is it even possible? Because the "Attach to Process" submenu lists when my app is running (or debugging in this case) but all the items inside this menu are disabled. All I can do is start the app from Instruments but later I come across some bug and I want to see the variables and properties affected. I'm also new to Instruments. Please, could someone give me any advice? Help would be greatly appreciated!

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• What challenges are there in making an iPhone IDE for Windows/Linux?

  - by Moshe

  First of all, is this possible? If so: What challenges would I encounter in making an XCode imitation for iPhone/iPod development for Windows or Linux? I was thinking about using gcc as the actual compiler for the objecitve-c. Will that work? It doesn't need to compile to iPhone OS until it is to be tested on the device or submitted to the app store. Perhaps it will be easier to compile to the local OS format (Windows or Linux) until "prime-time".

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• how to target css to iPad but exclude Safari 4 desktop using a media query?

  - by miriam835work

  I am trying to use a media rule to target css to iPad only. I want to exclude iPhone/iPod and desktop browsers. I would like to to also exclude other mobile devices if possible. I have used <style type="text/css" media="only screen and (min-device-width: 768px) and (max-device-width: 1024px)"> but just found out that desktop Safari 4 reads it. I have tried variations with "481px" instead of "768px" and another that adds an orientation to that: <style type="text/css" media="only screen and (min-device-width: 481px) and (max-device-width: 1024px) and (orientation:portrait)"> but not luck. (Later we will be sniffing user-agent strings for iPad, but for now that solution won't work.) Thanks!

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• iOS 5 fixed positioning and virtual keyboard

  - by jeffc

  I have a mobile website which has a div pinned to the bottom of the screen via position:fixed. All works fine in iOS 5 (I'm testing on an iPod Touch) until I'm on a page with a form. When I tap into an input field and the virtual keyboard appears, suddenly the fixed position of my div is lost. The div now scrolls with the page as long as the keyboard is visible. Once I click Done to close the keyboard, the div reverts to its position at the bottom of the screen and obeys the position:fixed rule. Has anyone else experienced this sort of behavior? Is this expected? Thanks.

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• iOS6 MKMapView using a ton of memory, to the point of crashing the app, anyone else notice this?

  - by Jeremy Fox

  Has anyone else, who's using maps in their iOS 6 apps, noticing extremely high memory use to the point of receiving memory warnings over and over to the point of crashing the app? I've ran the app through instruments and I'm not seeing any leaks and until the map view is created the app consistently runs at around ~3mb Live Bytes. Once the map is created and the tiles are downloaded the Live Bytes jumps up to ~13mb Live Bytes. Then as I move the map around and zoom in and out the Live Bytes continuos to climb until the app crashes at around ~40mb Live Bytes. This is on an iPhone 4 by the way. On an iPod touch it crashes even earlier. I am reusing annotation views properly and nothing is leaking. Is anyone else seeing this same high memory usage with the new iOS 6 maps? Also, does anyone have a solution?

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• PhoneGap's vibrate() and beep() functions break in iPhone, Android emulators

  - by Steve Nay

  I have a PhoneGap app that I'm testing on webOS, Android, and iPhone. I'm using physical devices as well as emulators (the ones that come with their respective SDKs, not the PhoneGap emulator). Part of the code uses the navigator.notification.vibrate() and navigator.notification.beep() functions. All the physical devices I'm using either perform the behavior or ignore it if they're not capable (e.g., the iPod can't vibrate). However, the emulators behave differently. The Android emulator kills the app whenever the beep() function is called. The iPhone emulator causes the app to hang whenever the vibrate() function is called. Is there any way to get the emulators to ignore those function calls when they are unable to execute them? That is, is there a way to get them to degrade gracefully so I can test the app both places without having to modify the code specifically for the emulators?

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• Dev efforts for different mobile platforms

  - by Juriy

  Hello guys, I'm in the middle of development of a client-server "socializing" that is supposed to run on several mobile devices. The project is pretty complex, involving networking, exchanging media, using geolocation services, and nice user UI. In terms of development efforts, technical risks and extensibility what is the best platform to start with? Taking into the account that the goal is go "live" as fast as possible with the mobile version. And second goal is to cover most users (but first is more important). iPhone (iPod iPad) Android BlackBerry Java ME, Symbian I realize that there are limitations on every platform, and there are different aspects to take into the account (for example iPhone has better developer's community then Android, J2ME runs in a terrible sandbox but covers most devices). Please share your pros and cons. I have the experience only with J2ME, unfortunately I can't evaluate other platforms.

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• How do you control the playback levels (decibles?) using the iPhone AVAudioPlayer? Or do I need to u

  - by Joshua

  My audio clips sound perfect when I upload them to the iPhone via iTunes. And I am pretty sure it is because the iPod has a maximum playback level, so the audio doesn't sound overdriven. In my app, I include the same audio files, and when I play them [myAudio play]; the levels are so high that the audio becomes indiscernible. I found in the library http://developer.apple.com/iphone/library/documentation/AVFoundation/Reference/AVAudioPlayerClassReference/Reference/Reference.html#//apple_ref/doc/uid/TP40008067-CH1-SW2 that it says that you can "Control relative playback level for each sound you are playing" but I've been searching this issue out for hours and I haven't gotten anywhere. Any help would be wonderful!

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• How to find out all versions of iPad from user-agent string?

  - by User11091981

  I wanted to find out all the version's of iPad (excluding iPhone, iPod) from user agent string, currently while testing I got the following string Mozilla/5.0 (iPad; CPU OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B206 Safari/7534.48.3 Question: Will the following code works fine for all the iPad's? String userAgentStr = request.getHeader("User-agent"); if (userAgentStr.contains("iPad")) { //do my logic } EDIT: I am using Dolphin browser from iPad but I am getting the following UA string: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en_US) AppleWebKit/533.17.9 (KHTML, like Gecko) Mobile/8C148 Safari/6533.18.5 Similarly iBrowser from iPad UA string is: Mozilla/5.0 (iPhone; CPU iPhone OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Mobile/9B206 So my above code is breaking...

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• Detecting when Bluetooth is disabled on iOS5

  - by Non Umemoto

  I'm developing blog speaker app. I wanna pause the audio when bluetooth is disabled like iPod app. I thought it's not possible without using private api after reading this. Check if Bluetooth is Enabled? But, my customer told me that Rhapsody and DI Radio apps both support it. Then I found iOS5 has Core Bluetooth framework. https://developer.apple.com/library/ios/documentation/CoreBluetooth/Reference/CoreBluetooth_Framework/CoreBluetooth_Framework.pdf CBCentralManagerStatePoweredOff status seems like the one. But, the description says this api only supports Bluetooth 4.0 low energy devices. Did anyone try doing the same thing? I want to support current popular bluetooth headsets, or bluetooth enabled steering wheel on the car. I don't know if it's worth trying when it only supports some brand new bluetooth.

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• Enhanced Podcasts and MPMoviePlayerViewController

  - by Ben Robinson

  Hi, This is a bit of an odd/specific one - possibly a bug? I'm using MPMoviePlayerViewController to play a variety of files, including Enhanced Podcasts - these are audio files, but with a slideshow of images, often created using GarageBand. Until (i think) iOS 3.2 they weren't supported at all, now they are and play fine in the iPod app, but in my app the slideshow doesn't start, the full screen movie player opens, and the audio begins, but all I see is the QuickTime logo. If I scrub the track the pictures appear - and will continue to play correctly - but I see nothing if I don't scrub! Any ideas?? On a related note, these files also include a small rectangluar button containing an (i) button on the right hand side - anybody know what it is or should do?! It does nothing for me!

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• UIImageView "Sprite Movement" How?

  - by Tate Allen

  Hi all, I am trying to make a game for the iPhone/iPod Touch. I am somewhat new to iPhone programming and extremely new to iPhone game programming so try to bear with me if this is a stupid question. How to I make my character, a UIImageView, move to the right or left, along the x axis. Just a simple translation across the screen. This is very frustrating so if you could link me to a tutorial or something like that, it would be much appreciated. Thanks in advance, Tate

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• Wordpress podcasting with youtube video hosting

  - by Salim Fadhley

  I'm trying to build a site based on Wordpress for a client. Eventually it will be used to publish videos which could be hosted locally, but to reduce costs it would be nicer if we could host all our videos on somewhere like YouTube or Vimeo. I'm looking for a plugin or a way of hacking an existing plugin in order to achieve this. The idea is that when we list a new item on the site, users of iTunes / iPod and any other (more) standards compliant podcatcher should be able to view the video. Ideally I'd like to get away without writing a single line of code, but that may not be possible. The best solution for me is the one which requires the least amount of work!

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• Examples of mobile frameworks that support AdSense for mobile content ads?

  - by David Sky

  I’ve tried, I really have, to find examples of serving up AdSense for mobile content ads in any of the popular mobile frameworks, but can’t find running webpages with ads, nor tutorials, etc.... I’ve done some iUI work, but would consider jQueryMobile, iWebKit, even sencha-touch if I could find an example that actually displays ads within the framework on an iPhone, iPod touch,etc... I realize there are issues with the HTML adSense generates, but hasn’t anyone found a work-around? Surely some mobile HTML sites must be serving up ads? Links to tutorials would be much appreciated!

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• Passing Data thru NSTimer UserInfo

  - by zorro2b

  I a trying to pass data thru userInfo for an NSTimer call. What is the best way to do this? I am trying to use an NSDictionary, this is simple enough when I have objective c objects, but what about other data? I want to do something like this, which doesn't work as is: - (void) play:(SystemSoundID)sound target:(id)target callbackSelector:(SEL)selector { NSLog(@"pause ipod"); [iPodController pause]; theSound = sound; NSMutableDictionary *cb = [[NSMutableDictionary alloc] init]; [cb setObject:(id)&sound forKey:@"sound"]; [cb setObject:target forKey:@"target"]; [cb setObject:(id)&selector forKey:@"selector"]; [NSTimer scheduledTimerWithTimeInterval:0 target:self selector: @selector(notifyPause1:) userInfo:(id)cb repeats:NO]; }

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• Warning in gdb,while run application in device mode

  - by dragon

  Warning in gdb, while run application in device mode... The warning message is warning: UUID mismatch detected with the loaded library - on disk is: /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.2.sdk/System/Library/PrivateFrameworks/MBX2D.framework/MBX2D =uuid-mismatch-with-loaded-file,file="/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.2.sdk/System/Library/PrivateFrameworks/MBX2D.framework/MBX2D" warning: UUID mismatch detected with the loaded library - on disk is: /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.2.sdk/usr/lib/libxml2.2.dylib =uuid-mismatch-with-loaded-file,file="/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.2.sdk/usr/lib/libxml2.2.dylib" The application not loaded in ipod ? the blackscreen shown for long time ... How can i fix this ? can any one help me? Thanks in advance.....

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• iPhone CSS and Display Testing

  - by Philip Arthur Moore

  Hi All. I recently coded and launched a website that displays consistently across Chrome, Firefox, Opera, IE8, IE7, and Safari. According to site visitors, though, the signup forms at the top and bottom of the site are mangled on the iPhone. I do not own an iPhone and I rarely test sites on the iPhone, and I would really hate to purchase it or an iPod Touch for the sake of occasional CSS/display testing. Question: is there a site online or a program I can use (I'm on Windows 7) for iPhone testing? An alternative question might be why the signup forms aren't displaying properly on the iPhone, when they look fine in all other browsers and a few other mobile devices that I've used? Many thanks.

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