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• UIView Animation won't run transition

  - by dpelletier

  So, I've searched quite a bit for this and can't seem to find a solution. This code works: CGContextRef context = UIGraphicsGetCurrentContext(); [UIView beginAnimations:nil context:context]; [UIView setAnimationDuration:5]; [c setCenter:CGPointMake(200, 200)]; [UIView commitAnimations]; This code doesn't: CGContextRef context = UIGraphicsGetCurrentContext(); [UIView beginAnimations:nil context:context]; [UIView setAnimationBeginsFromCurrentState:YES]; [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:c cache:YES]; [UIView setAnimationDuration:5]; [c exchangeSubviewAtIndex:0 withSubviewAtIndex:1]; [UIView commitAnimations]; And I know the call to exchangeSubViewAtIndex is working because if I remove it from the animation block it functions as expected. Anyone have any insight as to why this transition won't run? Something I need to import?

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• how to detect touch on UIView with UIimage ontop of it?

  - by Silent

  hello all, i want to use a UIview and a UIImage ontop of it with a text box and button i want the user to drag it when the UIview or anything in the view is touched, what would be the best way to implement this method? the UIView is on a single View Controller and using Interface Builder to make my UIviews and UIimages.

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• Monitor Network Traffic Mac

  - by Tom Irving

  I'm wondering how to go about monitoring network traffic on my Mac. Like the way activity monitor does it, showing the bytes / packets in and out. I know it's a bit vague, but I'm unsure of the best place to start.

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• How can I add settings in the settings application for the iPhone

  - by Eytan

  I have my user preferences set to display in the system-settings application BUT I want to give them the option of adding additional settings. Specifically, the user has a group 'favorites' in the settings bundle and they then can put in the details of their three favorite contacts. However, I want to give the user the option of adding more. I know how to do this with inapp but can this be done through the settings application?

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• Display subclass data in XCode Expression window

  - by Nick VanderPyle

  I'm debugging an iPhone application I've written using XCode 3.2 and I cannot view the relevant public properties of an object I pull from Core Data. When I watch the object in the Expressions window it only displays the data from the base NSManagedObject. I'd like to see the properties that are on the subclass, not the superclass. If it helps, here's some of the code I'm using. Settings is a subclass of NSManagedObject. I created it using XCode's built-in modeler. Declared like: @interface Settings : NSManagedObject { } @property (nonatomic, retain) NSNumber * hasNews; @property (nonatomic, retain) NSString * logoUrl; @property (nonatomic, retain) NSNumber * hasPaymentGateway; @property (nonatomic, retain) NSString * customerCode; ... In the interface of my controller I have: Settings *settings; I populate settings with: settings = (Settings *)[NSEntityDescription insertNewObjectForEntityForName:@"Settings" inManagedObjectContext:UIAppManagedObjectContext()]; I then set the properties like: settings.hasNews = [NSNumber numberWithBool:TRUE]; I've tried casting settings as (Settings *) in the Expression window but that doesn't help. All I see are the properties to NSManagedObject. I'm using NSLog but would rather not.

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• Learn Obj-C Memory Management

  - by Joshua Brickner

  I come from a web development background. I'm good at XHTML, CSS, JavaScript, PHP and MySQL, because I use all of those technologies at my day job. Recently I've been tinkering with Obj-C in Xcode in the evenings and on weekends. I've written code for both the iPhone and Mac OS X, but I can't wrap my head around the practicalities of memory management. I understand the high-level concepts but am unclear how that plays out in implementation. Web developers typically don't have to worry about these sorts of things, so it is pretty new to me. I've tried adding memory management to my projects, but things usually end up crashing. Any suggestions of how to learn? Any suggestions are appreciated.

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• Grand Central Strategy for Opening Multiple Files

  - by user276632

  I have a working implementation using Grand Central dispatch queues that (1) opens a file and computes an OpenSSL DSA hash on "queue1", (2) writing out the hash to a new "side car" file for later verification on "queue2". I would like to open multiple files at the same time, but based on some logic that doesn't "choke" the OS by having 100s of files open and exceeding the hard drive's sustainable output. Photo browsing applications such as iPhoto or Aperture seem to open multiple files and display them, so I'm assuming this can be done. I'm assuming the biggest limitation will be disk I/O, as the application can (in theory) read and write multiple files simultaneously. Any suggestions? TIA

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• UILabel instead of the default pin on MKMapView

  - by Allen.Han

  Is it possible to have our own UILabel or some other type of text instead of the default pin in MapKit map on iPhone?

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• Adding Existing Framework to Xcode (iPhone) error

  - by Urizen

  I have added the <QuartzCore/QuartzCore.h> to my Frameworks folder in my iPhone project and added the #import "<QuartzCore/QuartzCore.h>" statement at the top of a custom UIView class. However the custom UIView class gives me a "No such file or directory" compliation error in relation to the <QuartzCore/QuartzCore.h> framework. Is there something else I need to set so that the compiler can see the framework. I'm not expert on the Xcode IDE so any assistance would be extremely welcome.

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• Interface Builder Does Not Recognize Toolbar Buttons

  - by Sheehan Alam

  I created 4 UIButton's that are Custom and Plain in IB. I added a background image to them and then placed them onto my UIToolbar. I created IBActions and hooked up all of the buttons I did not create @property for the buttons, but 3/4 of them appear on my toolbar and they work. Why isnt my 4th button appearing? If I need to declare an @property for them, will it be a UIToolbarButtonItem or a UIButton?

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• trouble to connect with AppStore in my InAppPurchase application(iPhone)

  - by riteshkumar1905

  There is problem to connect AppStore in my application. All things run fine in Simulator.But When i go with iPhone then AppStore is not connected.. I am also enclose the code which i call on button....... import "BuyController.h" import "InAppPurchaseManager.h" import "SKProducts.h" define kInAppPurchaseProUpgradeProductId @"com.vigyaapan.iWorkOut1" @implementation BuyController (IBAction)buy:(id)sender { /* get the product description (defined in early sections)*/ //[self requestProUpgradeProductData]; { if ([SKPaymentQueue canMakePayments]) { InAppPurchaseManager *Observer = [[InAppPurchaseManager alloc] init]; [[SKPaymentQueue defaultQueue] addTransactionObserver:Observer]; //NSURL *sandboxStoreURL = [[NSURL alloc]initWithString:@"http://sandbox.itunes.apple.com/verifyReceipt"]; //[[UIApplication sharedApplication]openURL:[NSURL URLWithString:@"http://sandbox.itunes.apple.com"]]; [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://phobos.apple.com/WebObjects/ com.vigyaapan.iWorkOut1?id=9820091347&;amp;amp;amp;amp;mt=8"]]; //[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=301349397&;amp;amp;amp;amp;mt=8"]]; SKPayment *payment = [SKPayment paymentWithProductIdentifier:@"com.vigyaapan.iWorkOut1"]; [[SKPaymentQueue defaultQueue] addPayment:payment]; } else { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"MyApp" message:@"You are not authorized to purchase from AppStore" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil]; [alert show]; [alert release]; } //return [SKPaymentQueue canMakePayments]; } SKPayment *payment = [SKPayment paymentWithProductIdentifier:kInAppPurchaseProUpgradeProductId]; [[SKPaymentQueue defaultQueue] addPayment:payment]; //[self requestProUpgradeProductData]; /* get the product description (defined in early sections)*/ } /* // The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad. - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle )nibBundleOrNil { if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) { // Custom initialization } return self; }/ // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; } // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } (void)dealloc { [super dealloc]; } @end

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• Loading from archive?

  - by fuzzygoat

  Can anyone point me in the right direction, I have two sets of load/save methods below that I am playing with to save an array of objects out to disk and then load them back in. I am getting a little confused after calling "saveMoons" how I should go about loading that data back in ... any pointers would be great. -(void)saveMoons:(NSString *)savePath { NSMutableData *data = [[NSMutableData alloc] init]; NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data]; [moons encodeWithCoder:archiver]; [archiver finishEncoding]; [data writeToFile:savePath atomically:YES]; [data release]; [archiver release]; } -(void)loadMoons:(NSString *)loadPath { NSMutableData *data = [[NSMutableData alloc] initWithContentsOfFile:loadPath]; NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data]; // [self setMoons:[unarchiver ??????]]; } . // ------------------------------------------------------------------- ** // SIMPLER // ------------------------------------------------------------------- ** -(void)saveMoons_SIMPLE:(NSString *)savePath { NSData *data = [NSKeyedArchiver archivedDataWithRootObject:moons]; [data writeToFile:savePath atomically:YES]; } -(void)loadMoons_SIMPLE:(NSString *)loadPath { [self setMoons:[NSKeyedUnarchiver unarchiveObjectWithFile:loadPath]]; } // ------------------------------------------------------------------- ** // // ------------------------------------------------------------------- ** gary

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• Refreshing a UITableView

  - by MihaiD

  I have a UITableView subclass and a UITableViewCell sublass that I'm using for cells. I'm bulding all my cells in advance and store them in an array from where I use them in cellForRowAtIndexPath. Aside from this I have a thread that loads some images in each cell, in the background. The problem is that the cells don't get refreshed as fast as the images are loaded. For example, if I don't scroll my table view, the first cells only get refreshed when all cells have been modified and the thread has exited. Any ideas on how I can effectively refresh my tableview/cell?

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• Skype Mac API - Use AppleScript or 5 year old API?

  - by Andrew

  I have a x86_64 app that I would like to have optionally read Skype status messages. However, the 5 year old skype mac framework is 32-bit, and if there is a way to have that compile within a 64-bit app, I haven't found it. My question is, basically, how should I go about doing this? I really only need to get and set the USERSTATUS AWAY/ONLINE string. Using AppleScript, a "Should Skype allow this" dialog pops up... every time. This is highly inefficient and downright irritating. Advice? I'm considering writing a 32-bit CLI wrapper, but that seems like overkill.

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• Cocoa/AppleScript move file

  - by bogdan

  I have a list of file paths and a destination path. I need something (AppleScript, Cocoa) that will move the files from one location to an other. I first tried using the following AppleScript, just to see what happens: set the_folder to (choose folder) tell application "Finder" move selection to the_folder end tell The problem is that it just blindly tries to move a file, nothing like the way Finder actually moves files (i.e. if a file with that name already exists, the AppleScript just throws an error, while Finder would ask you if you want to replace the file). The solution I came up with involved NSFileManager. I won't post the code because it's quite long, but basically I just check if the file already exists before trying to move, and if it exists a NSAlert with Replace/Cancel buttons appear. I have 2 remaining problems: Authorization - if you try to do something to files where you don't have access, the Finder would ask you to authorize. My code just fails... Moving to external drives - when you try to move a file to a different drive, NSFileManager copies the file and then deletes the original. The problem is that NSFileManager doesn't provide anything which I could use to display a progress indicator of what's happening during the copy. Is there anything I could use that is able to move files without these problems? The way I see it, I'm pretty much stuck with checking if the files are writable by the current user and authorize NSFileManager if not (from my understanding of the Authorization Services, this will be quite hard to implement). Oh and, I would also need to check if the destination is on the same drive and if not, implement something with FSCopyObjectAsync so that it shows a progress indicator... Thanks!

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• Iphone sdk - please help , 1 view takes me 45 minutes to do :(

  - by Dave

  Hey, I've been working on a Cook Book App but each view ( or recipie page) takes about 45 minutes to complete so as you can imagine its taking forever. The problem is that I have to manually: Set up a gradient image for the back ground (Somtimes I have to add a few image backgrounds to fit the view as I often use a scroll view, not sure how this could be automated?) Put an image behind the titles "Recipe name" , "Time needed" and an image to go behind the recipie instructions ( again I might need a few of these depending on how long the description is. Creating view controllers for main sections such as "Breakfast" and "Lunch" and then I need to manually create view controllers to go in these sections. Theres got to be a way to set up a template for this? Thanks for reading all of this.

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• Using a UITableViewController with a small-sized table?

  - by rpj

  When using a UITableViewController, the initWithStyle: method automatically creates the underlying UITableView with - according to the documentation - "the correct dimensions". My problem is that these "correct dimensions" seem 320x460 (the iPhone's screen size), but I'm pushing this TableView/Controller pair into a UINavigationController which is itself contained in a UIView, which itself is about half the height of the screen. No frame or bounds wrangling I can come up with seems to correctly reset the table's size, and as such it's "too long", meaning there are a collection of rows that are pushed off the bottom of the screen and are not visible nor reachable by scrolling. So my question comes down to: what is the proper way to tell a UITableViewController to resize its component UITableView to a specified rectangle? Thanks! Update I've tried all the techniques suggested here to no avail, but I did find one interesting thing: if I eschew the UINavigationController altogether (which I'm not yet willing to do for production, but as an experiment), and add the table view as a direct subview of the enclosing view I mentioned, the frame size given is respected. The very moment I re-introduce the UINavigationController into the mix, no matter if it is added as a subview before or after the table view, and no matter if alloc/init it before or after the table view is added as a subview, the result is the same as it was before. I'm beginning to suspect UINavigationController isn't much of a team player... Update 2 The suggestion to check frame size after the table view on screen was a good one: turns out that the navigation controller is in fact resizing it some time in between load and display. My solution, hacky at best, has been to cache the frame given on load and to reset it if changed at the beginning of tableView:cellForRowAtIndexPath:. Why there you ask? Because it's the one place I found that worked, that's why! I don't consider this a solution as it's obviously improper, but for the benefit of anyone else reading, it does seem to work.

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• Reloading the model of a TTTableViewController

  - by user341338

  My problem is that I have a Register Controller and a Login Controller. The Login Screen displays a Login Screen or a Logout Screen depending if a user is logged in. Now when a user registers, does not close the app, and then goes to the Login Screen it will still display a Login Screen, although there is a logged in user already. This is because the Screen is created when the application loads and does not change afterwards. I tried doing this: - (id)init { if (self = [super init]) { [self invalidateModel]; [self reload]; but that did not work, since it is only called on the first init. then i tried: - (void)viewDidLoad { [self invalidateModel]; [self reload]; } But that method had the same problem. Then I found this method: - (TTNavigationMode)navigationModeForURL:(NSString*)URL; with the following options: typedef enum { TTNavigationModeNone, TTNavigationModeCreate, // a new view controller is created each time TTNavigationModeShare, // a new view controller is created, cached and re-used TTNavigationModeModal, // a new view controller is created and presented modally TTNavigationModeExternal, // an external app will be opened } TTNavigationMode; It seems like TTNavigationModeCreate would be the right thing to use, but I have no clue how to use it. Any help? Thnx.

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• iPhone switch statement using enum

  - by Boris

  I have defined an enum in a header file of a class : typedef enum{ RED = 0, BLUE, Green } Colors; - (void) switchTest:(Colors)testColor; and in the implementation file I have : - (void) switchTest:(Colors)testColor{ if(testColor == RED){ NSLog(@"Red selected"); } switch(testColor){ case RED: NSLog(@"Red selected again !"); break; default: NSLog(@"default selected"); break; } } My code compiles correctly without warrnings. When calling the switchTest method with RED, the output is : "Red selected" but once the first line of the switch runs, the application quits unexpectedly and without warrnings/errors. I don't mind using if/else syntax but I would like to understand my mistake.

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• how to open itunes in my application

  - by uttam

  hi i am developing application and we want to give the link that open the apple itunes by which user can download new version of that app. help me.

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• Update a tableView with a plist took from another table

  - by Pheel

  Background: I have a tab bar application, which has a tableView as the "heart" of the app. It loads data from a plist and, through a button that checks if there are any updates on the remote plist file, updates the local plist with the remote contents. Then, i have another tableView, that should display only those plist items that have a bool value set to YES. Now i want to add a button to the second table that reloads the plist took from the first table. Expected: When i update the local plist from the first table and when i press the button on the second table, the 2nd table is supposed to update and show the cells with that bool value set to YES. (Note: I set YES as default to some items on plist). What happens: The first table updates its content from remote. The second table shows the old items with the value set to YES. When i press the button to refresh data, it reads the plist fine (by logging it, it has the same contents of the first table -only those set to YES-),but it doesn't update data even if i have [self.tableView reloadData];. When i close the app and open it again, the second table is filled with the right items. :\ Code i'm using: //Reading Plist { NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES); NSString *plistPath = [[documentPaths lastObject] stringByAppendingPathComponent:@"myPlist.plist"]; NSFileManager *fMgr = [NSFileManager defaultManager]; if (![fMgr fileExistsAtPath:plistPath]) { plistPath = [[NSBundle mainBundle] pathForResource:@"myPlist" ofType:@"plist"]; } NSMutableArray *returnArr = [NSMutableArray arrayWithContentsOfFile:plistPath]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"isFav == YES"]; for (NSDictionary *sect in returnArr) { NSArray *arr = [sect objectForKey:@"Rows"]; [sect setValue:[arr filteredArrayUsingPredicate:predicate] forKey:@"Rows"]; } [self.tableView reloadData]; } //Refresh data button - (void) refreshTable:(id)sender { NSLog(@"plist read"); [self readPlist]; NSLog(@"refreshed plist:%@",[self readPlist]); [self.tableView reloadData]; } Does anyone know why the table is not updating?

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• UITableView don't react on a tap

  - by aspcartman

  I have a fully working grouped tableview. But when i just tap on a cell - nothing happens. willSelectRowAtIndexPath is not even being called. All outlets are set correctly, userInteractions are enabled, tableView is the only view on a page. Googling for hours made no success. Everyone has a selection feature from the begining and someone even tries to ged rid of it. Help, please. Cell creation: UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"FriendCell"];

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• Getting RSSIValue from IOBluetoothHostController

  - by Tanner Ezell

  I'm trying to write a simple application that gathers the RSSIValue and displays it via NSLog, my code is as follows: #import <Foundation/Foundation.h> #import <Cocoa/Cocoa.h> #import <IOBluetooth/objc/IOBluetoothDeviceInquiry.h> #import <IOBluetooth/objc/IOBluetoothDevice.h> #import <IOBluetooth/objc/IOBluetoothHostController.h> #import <IOBluetooth/IOBluetoothUtilities.h> @interface getRSSI: NSObject {} -(void) readRSSIForDeviceComplete:(id)controller device:(IOBluetoothDevice*)device info:(BluetoothHCIRSSIInfo*)info error:(IOReturn)error; @end @implementation getRSSI - (void) readRSSIForDeviceComplete:(id)controller device:(IOBluetoothDevice*)device info:(BluetoothHCIRSSIInfo*)info error:(IOReturn)error { if (error != kIOReturnSuccess) { NSLog(@"readRSSIForDeviceComplete return error"); CFRunLoopStop(CFRunLoopGetCurrent()); } if (info->handle == kBluetoothConnectionHandleNone) { NSLog(@"readRSSIForDeviceComplete no handle"); CFRunLoopStop(CFRunLoopGetCurrent()); } NSLog(@"RSSI = %i dBm ", info->RSSIValue); [NSThread sleepUntilDate: [NSDate dateWithTimeIntervalSinceNow: 5]]; [device closeConnection]; [device openConnection]; [controller readRSSIForDevice:device]; } @end int main (int argc, const char * argv[]) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSLog(@"start"); IOBluetoothHostController *hci = [IOBluetoothHostController defaultController]; NSString *addrStr = @"xx:xx:xx:xx:xx:xx"; BluetoothDeviceAddress addr; IOBluetoothNSStringToDeviceAddress(addrStr, &addr); IOBluetoothDevice *device = [[IOBluetoothDevice alloc] init]; device = [IOBluetoothDevice withAddress:&addr]; [device retain]; [device openConnection]; getRSSI *rssi = [[getRSSI alloc] init]; [hci setDelegate:rssi]; [hci readRSSIForDevice:device]; CFRunLoopRun(); [hci release]; [rssi release]; [pool release]; return 0; } The problem I am facing is that the readRSSIForDeviceComplete seems to work just fine, info passes along a value. The problem is that the RSSI value is drastically different from the one I can view from OS X via option clicking the bluetooth icon at the top. It is typical for my application to print off 1,2,-1,-8,etc while the menu displays -64 dBm, -66, -70, -42, etc. I would really appreciate some guidance.

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• Getting "Location" header from NSHTTPURLResponse

  - by aspcartman

  Can't get "Location" header from response at all. Wireshark says that i've got one: Location: http://*/index.html#0;sid=865a84f0212a3a35d8e9d5f68398e535 But NSHTTPURLResponse *hr = (NSHTTPURLResponse*)response; NSDictionary *dict = [hr allHeaderFields]; NSLog(@"HEADERS : %@",[dict description]); Produces this: HEADERS : { Connection = "keep-alive"; "Content-Encoding" = gzip; "Content-Type" = "text/html"; Date = "Thu, 25 Mar 2010 08:12:08 GMT"; "Last-Modified" = "Sat, 29 Nov 2008 15:50:54 GMT"; Server = "nginx/0.7.59"; "Transfer-Encoding" = Identity; } No location anywhere. How to get it? I need this "sid" thing.

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• Get EXEC_BAD_ACCESS when I get the NSFileModificationDate

  - by Toto

  Hi everyone, I try to get the last modification date of a file: NSFileManager *fm = [[NSFileManager alloc] init]; NSError *err; NSDate *lastModif = [[fm attributesOfItemAtPath:filename error:&err] objectForKey:NSFileModificationDate];//filename is ok ;-) if(err == nil) { [lastModif retain]; //I can put a NSLog of lastModif here, it works !! NSTimeInterval lastModifDiff = [lastModif timeIntervalSinceNow];//crash here } I don't understand why the NSDate seems to be released, why the retain does not retain it. Thank you if you have any idea...

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