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• UICollectionViewController nested in a normal UIViewController

  - by patrickS

  I have added a UICollectionView into a normal ViewController (MainViewController), and than created a UICollectionViewController Subclass (CollectionViewController) in the ViewController and connected the UICollectionView outlet with the CollectionViewController object _collectionViewController = [[CollectionViewController alloc] initWithCollectionViewLayout:_collectionView.collectionViewLayout]; _collectionView.dataSource = _collectionViewController; _collectionView.delegate = _collectionViewController; In the CollectionViewController I have setup an simple NSArray object and I show this one. This works as expected. But If I try to access the collectionview from the CollectionViewController via self.collectionview I am not able to access this one. I dont know what I have to do, to also connect the collectionview. I have build a sample ios-app it is available at: https://github.com/patricks/uicollectionview-problem The method - (void)outputSelectedCell in the UICollectionViewController always shows, that there is nothing selected… I hope you understand the problem.

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• share text on facebook from iOS application using sharekit

  - by Rendel

  I want to share some text on facebook using sharekit. I found many solutions but no1 worked for me. I have imported sharekit and frameworks in my project. Now I want to share text: @"Hello everyone" directly (I mean not to choose from options: mail, twitter, facebook. When I press button share it should share text on facebook, of couse ask log in if it's necessary). And also I will be glad if you tell me which fields are necessary to fill in the SHKConfig.h file for facebook.

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• apple script on windows

  - by Sudhakar Kalmari

  I would like to use AppleScript on Windows. Is there any IDE or Windows port ?

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• Apache NameVirtualHost on port 443 ignores ServerAlias

  - by Ryan

  I've got a name-based virtual host setup on port 443 such that requests on host 'apple.fruitdomain' are proxied to the apple-app and requests on host 'orange.fruitdomain' are proxied to orange-app. This is working, but I'd like to add a ServerAlias for each such that requests on host 'apple' are proxied to apple-app and requests on host 'orange' are proxied to the orange-app. If I simply add a ServerAlias directive to the virtual host it doesn't work. ssl.conf below: Listen 443 NameVirtualHost *:443 <VirtualHost *:443> ServerName apple.fruitdomain ServerAlias apple SSLProxyEngine on ProxyPass /apple-app https://localhost:8181/apple-app ProxyPassReverse /apple-app https://localhost:8181/apple-app ... </VirtualHost> <VirtualHost *:443> ServerName orange.fruitdomain ServerAlias orange SSLProxyEngine on ProxyPass /orange-app https://localhost:8181/orange-app ProxyPassReverse /orange-app https://localhost:8181/orange-app ... </VirtualHost> Interestingly if I do a similar setup but with port 80 then the ServerAlias works...

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• How to configure the framesize using AudioUnit.framework on iOS

  - by Piperoman

  I have an audio app i need to capture mic samples to encode into mp3 with ffmpeg First configure the audio: /** * We need to specifie our format on which we want to work. * We use Linear PCM cause its uncompressed and we work on raw data. * for more informations check. * * We want 16 bits, 2 bytes (short bytes) per packet/frames at 8khz */ AudioStreamBasicDescription audioFormat; audioFormat.mSampleRate = SAMPLE_RATE; audioFormat.mFormatID = kAudioFormatLinearPCM; audioFormat.mFormatFlags = kAudioFormatFlagIsPacked | kAudioFormatFlagIsSignedInteger; audioFormat.mFramesPerPacket = 1; audioFormat.mChannelsPerFrame = 1; audioFormat.mBitsPerChannel = audioFormat.mChannelsPerFrame*sizeof(SInt16)*8; audioFormat.mBytesPerPacket = audioFormat.mChannelsPerFrame*sizeof(SInt16); audioFormat.mBytesPerFrame = audioFormat.mChannelsPerFrame*sizeof(SInt16); The recording callback is: static OSStatus recordingCallback(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData) { NSLog(@"Log record: %lu", inBusNumber); NSLog(@"Log record: %lu", inNumberFrames); NSLog(@"Log record: %lu", (UInt32)inTimeStamp); // the data gets rendered here AudioBuffer buffer; // a variable where we check the status OSStatus status; /** This is the reference to the object who owns the callback. */ AudioProcessor *audioProcessor = (__bridge AudioProcessor*) inRefCon; /** on this point we define the number of channels, which is mono for the iphone. the number of frames is usally 512 or 1024. */ buffer.mDataByteSize = inNumberFrames * sizeof(SInt16); // sample size buffer.mNumberChannels = 1; // one channel buffer.mData = malloc( inNumberFrames * sizeof(SInt16) ); // buffer size // we put our buffer into a bufferlist array for rendering AudioBufferList bufferList; bufferList.mNumberBuffers = 1; bufferList.mBuffers[0] = buffer; // render input and check for error status = AudioUnitRender([audioProcessor audioUnit], ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, &bufferList); [audioProcessor hasError:status:__FILE__:__LINE__]; // process the bufferlist in the audio processor [audioProcessor processBuffer:&bufferList]; // clean up the buffer free(bufferList.mBuffers[0].mData); //NSLog(@"RECORD"); return noErr; } With data: inBusNumber = 1 inNumberFrames = 1024 inTimeStamp = 80444304 // All the time same inTimeStamp, this is strange However, the framesize that i need to encode mp3 is 1152. How can i configure it? If i do buffering, that implies a delay, but i would like to avoid this because is a real time app. If i use this configuration, each buffer i get trash trailing samples, 1152 - 1024 = 128 bad samples. All samples are SInt16.

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• While submitting app to iOS App Store, "Unable to unzip application"

  - by Ivan Vucica

  I've successfully submitted "Product Name" to App Store. However, submitting "Product Name Lite", I keep getting the error "Unable to unzip application" in both Application Loader and built-in Xcode's uploader. Error persists even after eliminating spaces from the product name; in fact, I don't think there's whitespace anywhere in the app or the plist anymore. What might be causing this "highly descriptive" error? I'm using Xcode 3.2.5. Attempting to clean, build, and build&archive did not help.

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• APPLE SCRIPT microsoft excel cells back ground color

  - by satyam

  Using applescript how can i change the color of "cells ranging from A3 to E3" to light grey color. I still want the font to be in black color.

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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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• Find missing birth days in Apple Addressbook

  - by Felix Ogg

  I am trying to clean the holes out of my Mac address book. As a first step I want to ask all my friends for their birth day, to be able to congratulate them with cheesy Hallmark cards. I need a "group" in my address book, to mailmerge personalized messages from. This is the Applescript I came up with: tell application "Address Book" make new group with properties {name:"No Birthday"} set birthdayPeople to (get every person whose birth date is greater than date "Monday, January 1, 1900 12:00:00 AM") repeat with i from 1 to number of items in people set thePerson to item i of people if not (birthdayPeople contains thePerson) then add thePerson to group "No Birthday" end if end repeat save end tell It breaks, but from the error messages I cannot deduce what is wrong: Result: error "Can’t make «class azf4» id \"05F770BA-7492-436B-9B58-E24F494702F8:ABPerson\" of application \"Address Book\" into type vector." number -1700 from «class azf4» id "05F770BA-7492-436B-9B58-E24F494702F8:ABPerson" to vector (BTW: Did I mention this is my first AppleScript code, EVER? So, if this code can be simplified, or made more elegant, that is welcome too.)

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• iOS - when to remove subviews from UITableViewCell

  - by Milad Ghattavi

  I have a UITableView which a UIImage is added as a subview to each cell of it. The images are PNG transparent. The problem is when I scroll through the UITableView, the images get overlapped and then I receive the memory warning and stuff. here's the current code for configuring a cell: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; } int cellNumber = indexPath.row + 1; NSString *cellImage1 = [NSString stringWithFormat:@"c%i.png", cellNumber]; UIImage *theImage = [UIImage imageNamed:cellImage1]; UIImageView *cellImage = [[UIImageView alloc] initWithImage:theImage]; [cell.contentView addSubview:cellImage]; return cell; } I know the code for removing the UIImage subview would be like: [cell.imageView removeFromSuperview]; But I don't know where to put it. I've placed it between all the lines; even added an else, in the if statement. didn't seem to work!

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• Constant Expected "{" before ")" token

  - by Thijs

  I've got a little problem. I am applying some changes to an iOS program i wrote, but I've struck a problem. I constantly get a "Expected '{' before ')' token" warning, but my coding skills aren't good enough to find the problem. A little help would greatly be appreciated. #import "Search.h" #import "RootViewController.h" //button - (IBAction)buttonPressed)sender{ RootViewController *newview = [[RootViewController alloc] initWithNibName:@"RootViewController" bundle:nil]; [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:0.5]; [UIView setAnimationTransition:UIViewAnimationTransitionFl ipFromRight forView:self.view cache:YES]; [self.view addSubview:newview.view]; [UIView commitAnimations]; @implementation Search @end

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• Creating futures using Apple's GCD

  - by jer

  I'm working on a library which implements the actor model on top of Grand Central Dispatch (specifically the C level API libdispatch). Basically a brief overview of my system is as such: Communication happens between actors using messages Multicast communication only (one actor to many actors) Senders and receivers are decoupled from one another using a blackboard where messages are pushed to. Messages are sent in the default queue asynchronously using dispatch_group_async() once a message gets pushed onto the blackboard. I'm trying to implement futures in the language right now, so I've created a new type which holds some information: A group of its own The value being 'returned' However, I have a problem since dispatch_block_t is of type void (^)(void) so it doesn't return anything. So my idea of in my future_new() function of setting up another group which can be used to execute a block returning a result, which I can store in my "value" member in my future_t structure, isn't going to work. The rest of the futures implementation is very clear, except it all depends on being able to get the value into the future back from the actor, acting on the message. When using the library, it would greatly reduce its usefulness if I had to ask users (and myself) to be aware when futures were going to be used by other parts of the system—It just isn't practical. I'm wondering if anyone can think of a way around this?

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• iOS: Gesture recogniser for smooth scrolling and flicking a View

  - by AppleDeveloper

  I am building an iPad app where I needed to allow resizing views functionality using divider view provided between two views. This divider view is just a 20px height view between two half screen content views - please refer attached images. When user scrolls this divider view up or down, both content views changes their sizes appropriately. I have extended UIView and implemented this using touchMoved delegate as code given below in touchesMoved delegate. It works fine. The only thing is missing with TouchMoved is you can't flick divider view to top or bottom directly. You have to scroll all the way to top or bottom! To support flicking the view I have tried UIPanGestureRecognizer but I don't see smooth scrolling with it. When I handle split position change in UIGestureRecognizerStateChanged state, just touching divider view flick it to top or bottom. Handling split position change in UIGestureRecognizerStateEnded does the same but I don't see content view resizing with dividerview scrolling! Could someone please tell me how could I achieve both smooth scrolling of divider view with resizing content views(like touchMoved) and flicking the view. Any alternative approach would also fine. Thanks. - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; if (touch) { CGPoint lastPt = [touch previousLocationInView:self]; CGPoint pt = [touch locationInView:self]; float offset = pt.y - lastPt.y; self.parentViewController.splitPosition = self.parentViewController.splitPosition + offset; } } - (void)handlePan:(UIPanGestureRecognizer*)recognizer { CGPoint translation = [recognizer translationInView:recognizer.view]; CGPoint velocity = [recognizer velocityInView:recognizer.view]; if (recognizer.state == UIGestureRecognizerStateBegan) { } else if (recognizer.state == UIGestureRecognizerStateChanged) { // If I change split position here, I don't see smooth scrolling dividerview...it directly jumps to the top or bottom! self.parentViewController.splitPosition = self.parentViewController.splitPosition + translation.y; } else if (recognizer.state == UIGestureRecognizerStateEnded) { // If I change split position here, the same thing happens at end and I don't see my divider view moving with my scrolling and resizing my views. self.parentViewController.splitPosition = self.parentViewController.splitPosition + translation.y; } } Initial screen Increased top view size by scrolling divider view Top view is totally hidden here but I have to scroll divider view all the way to top. I want to flick the divider view so that it directly goes from any position to top

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• Facing error in apple multitasking code

  - by user366584

  Actually I am working for multitasking and facing error please assist me, as I need to work on background application and also in foreground application - (void)applicationDidEnterBackground:(UIApplication *)application { UIApplication* app = [UIApplication sharedApplication]; // Request permission to run in the background. Provide an // expiration handler in case the task runs long. NSAssert(bgTask == UIBackgroundTaskInvalid, nil); bgTask = [app beginBackgroundTaskWithExpirationHandler:^{ // Synchronize the cleanup call on the main thread in case // the task actually finishes at around the same time. dispatch_async(dispatch_get_main_queue(), ^{ if (bgTask != UIBackgroundTaskInvalid) { [app endBackgroundTask:bgTask]; bgTask = UIBackgroundTaskInvalid; } }); }]; // Start the long-running task and return immediately. dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ // Do the work associated with the task. // Synchronize the cleanup call on the main thread in case // the expiration handler is fired at the same time. dispatch_async(dispatch_get_main_queue(), ^{ if (bgTask != UIBackgroundTaskInvalid) { [app endBackgroundTask:bgTask]; bgTask = UIBackgroundTaskInvalid; } }); }); }

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• Show UIView for app presentation only once in iOS

  - by André Muniz

  I need to show an UIScrollView with some pages for present the app to user when launched for the first time. My slides are working correctly, lefting the logic to present it. Is a good practice to set the UIScrollViewController as root controller and set a NSUserDefault variable to control the presentation and redirect to main controller or set the main ViewController as root normally and call the presentation view if needed is a better approach? If there is a better way to do this can someone help? Thanks.

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• Apple Push Notification with Sending Custom Data

  - by SharmaJI

  I am sending push notifications from php job application to iphone. I am sending push notifications regarding new jobs. Is this possible that when user click on the view of push notification pop up , then user redirect to the particular job in the device. I mean I wanted to know can I send any custom data with push notification like jobId,something else....so that Iphone end Can retrieve and show the particular job ? Thanks.

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• Is registering your app through iTunesConnect required to test GameKit integration?

  - by Dan K.

  I'd like to add GameKit integration to my app. I was hoping to be able to evaluate how it works. From the docs I found, it seems that I have to register my app through iTunes Connect first. I'm new to the iOS development front, so maybe I'm wrong here, but it seems like registering your app in iTunes Connect is a pretty final step, and I'd like to be able to test things before going through that step. So, I guess I have two questions: 1.) Do I have to register my app with iTunes Connect before being able to use GameKit? 2.) Am I being crazy about not wanting to register with iTunes Connect yet? Should I stop worrying and just do it?

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• CorePlot - Set y-Axis range to include all data points

  - by zdestiny

  I have implemented a CorePlot graph in my iOS application, however I am unable to dynamically size the y-Axis based on the data points in the set. Some datasets range from 10-50, while others would range from 400-500. In both cases, I would like to have y-origin (0) visible. I have tried using the scaletofitplots method: [graph.defaultPlotSpace scaleToFitPlots:[graph allPlots]]; but this has no effect on the graphs, they still show the default Y-Axis range of 0 to 1. The only way that I can change the y-Axis is to do it manually via this: graph.defaultPlotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0.0f)) length:CPTDecimalFromFloat(500.0f)]; however this doesn't work well for graphs with smaller ranges (10-50), as you can imagine. Is there any method to retrieve the highest y-value from my dataset so that I can manually set the maximum y-Axis to that value? Or is there a better alternative?

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• UIViewScrollviw UITableView subview scrolling. IOS

  - by user1484810

  I have a UIScrollview with a UITableview subview. The UIScrollview scrolls the UITableView horizontally. The UITable view naturally scrolls up and down. If a user places their finger on the UitableView, and moves (swipes) horizontally, The delegate method below is invoked (void)scrollViewDidScroll:(UIScrollView *)scrollView with scrollView isEqual theUIScrollView If the user lifts their finger and places it back down on the UITableView and moves in a vertical direction The delegate method below is invoked (void)scrollViewDidScroll:(UIScrollView *)scrollView with scrollView isEqual = theUITable If however the user places their finger and moves in a horizontally (void)scrollViewDidScroll:(UIScrollView *)scrollView with scrollView isEqual theUIScrollView If the user then moves the finger (without lifting it) in a vertical direction. delegate method scrollViewDidScroll is not invoked at all. (The reverse is true too.) I note that the "Pulse News" app seems to behave in the above manner.. Ultimately I want to figure out how to get the UITableView and UIScrollview moving in a "unidirectional" fashion, with one finger kept on the screen. Thanks...

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• pull down notification panel in iOS help for iPad

  - by Priya Chhabra

  I have developed an iPad application. In which I am using left/right swipes from corner of screen. The problem is when device is in landscape mode, (though the application is always in portrait orientation) and user wants to swipe left, it opens the notification panel instead of going to swipeAction that I had defined. Note that it works fine when device is kept in portrait mode. Is there any way to make pull down notification panel application orientation specific ? Any kind of help will be appreciated.

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• How to Insert a <a> tag link in a Facebook wall

  - by Diogo Hacka

  How can I insert a html link like the 2 posts below with the Facebook iOS SDK? Link to Image! In Train Conductor and "itunes.apple.com" for The Fleas post they use a bit.ly link. I tried to use the html tag <a href="www.mystuff.com">Whatever<\a but it didn't work. NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys: @"My game in iTunes", @"name", @"http://www.mystuff.com", @"link", @"Check out this cool game for iPhone.", @"description", nil]; This code works but that is just a normal post.

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• Objective-c class initializer executes multiple times

  - by apisip

  Unless I misunderstood it, this LINK from Apple's documentation clearly states that the class initializer, "+ (void)initialize)", only executes once per class. Here is the excerpt: Special Considerations initialize it is invoked only once per class. If you want to perform independent initialization for the class and for categories of the class, you should implement load methods. However, I'm getting a weird behavior on my project and the initializer is being executed twice. So I have to check if _classContext is null. I only got one class that has this method. What are the possible reasons why this is happening? I'm using XCode 4.5.2 and OS X 10.8.2. I got multiple iOS simulators, iPhone 5.1 and 6.0. + (void) initialize { num++; NSLog([NSString stringWithFormat:@"Times: %i", num]); if(_classContext == nil) _classContext = [[myClass alloc] init]; }

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• Is it possible to access raw iphone audio output?

  - by Peter Hall

  Is it possible access raw PCM data from the iphone audio output? I know I can embed an MP3 and use AudioUnit. But if the user is playing music in the background from their itunes library, is it possible to access that audio data? This is for an app that shows visual effects, which react to the music. From what I can tell, it isn't possible, but that's just from lack of finding any information at all, rather than actual confirmation that it can't be done. If it isn't possible to access the audio stream from the ipod, is it possible to access raw audio output from the Media Player inside an app, or is pretty much not permitted to access raw audio data from the itunes library at all? EDIT: I found this question: iOS - Access output audio from background program, which say I can't access the audio from a background app. But is it possible to get the audio data from the itunes library if I play it inside the app?

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• Why does my macbook pro keep freezing?

  - by mac

  Once in a while my macbook pro 10.8.2 freezes for a couple of seconds, this is really annoying. Mouse gets frozen, I can't move it, and screen gets frozen. These are the last messages from the kernel, how to solve this? Sandbox: sandboxd(38380) deny mach-lookup com.apple.coresymbolicationd Sandbox: sandboxd(38410) deny mach-lookup com.apple.coresymbolicationd Sandbox: sandboxd(38429) deny mach-lookup com.apple.coresymbolicationd Sandbox: sandboxd(38463) deny mach-lookup com.apple.coresymbolicationd Sandbox: sandboxd(38495) deny mach-lookup com.apple.coresymbolicationd Sandbox: sandboxd(38513) deny mach-lookup com.apple.coresymbolicationd Sandbox: sandboxd(38550) deny mach-lookup com.apple.coresymbolicationd Sandbox: sandboxd(38581) deny mach-lookup com.apple.coresymbolicationd Sandbox: sandboxd(38599) deny mach-lookup com.apple.coresymbolicationd CODE SIGNING: cs_invalid_page(0x1000): p=38605[GoogleSoftwareUp] clearing CS_VALID Sandbox: sandboxd(38632) deny mach-lookup com.apple.coresymbolicationd

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• Apple Interface Builder: adding subview to UIImageView

  - by kpower

  I created UIImageView with the help of Interface Bulder. Now I want to place label inside it (as its subview). In code I can type something like: [myUIImageView addSubview:myUILabel]; But can I do it with the help of IB? I found the solution for UIView, but can't find something similar for UIImageView.

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