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  • iphone tab bar controller and core data.

    - by Sway
    Ok bit of a newbie type question. I want to use Core Data, together with Tab and Navigation controllers. In XCode if I create a Navigation Based Application I get the option to choose Core Data. Whereas If I create a Tab Bar Application I don't get the choice. I understand that Tab Bars display view controllers so it kinda makes sense. However given that by default it sticks the basic Core Data code in the Application delegate I don't see why this isn't offered. At the moment I'm creating the two projects and cutting and pasting between them. Does this omission in XCode seem weird to you? Is it some sort of oversight? Thanks, Matt

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  • Retain count problem iphone sdk

    - by neha
    Hi all, I'm facing a memory leak problem which is like this: I'm allocating an object of class A in class B. // RETAIN COUNT OF CLASS A OBJECT BECOMES 1 I'm placing the object in an nsmutablearray. // RETAIN COUNT OF CLASS A OBJECT BECOMES 2 In an another class C, I'm grabbing this nsmutablearray, fetching all the elements in that array in a local nsmutablearray, releasing this first array of class B. // RETAIN COUNT OF CLASS A OBJECTS IN LOCAL ARRAY BECOMES 1 Now in this class C, I'm creating an object of class A and fetching the elements in local nsmutable array. //RETAIN COUNT OF NEW CLASS A OBJECT IN LOCAL ARRAY BECOMES 2 [ALLOCATION + FETCHED OBJECT WITH RETAIN COUNT 1] My question is, I want to retain this array which I'm displaying in tableview, and want to release it after new elements are filled in the array. I'm doing this in class B. So before adding new elements, I'm removing all the elements and releasing this array in class B. And in class C I'm releasing object of class A in dealloc. But in Instruments-Leaks it's showing me leak for this class A object in class C. Can anybody please tell me wheather where I'm going wrong. Thanx in advance.

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  • [iPhone] Background color during flip view animation/transition?

    - by Rob S.
    I have some pretty standing flipping action going on: [UIView beginAnimations:@"swapScreens" context:nil]; [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.view cache:YES]; [UIView setAnimationDuration:1.0]; [self.view exchangeSubviewAtIndex:0 withSubviewAtIndex:1]; [UIView commitAnimations]; To Apple's credit, this style of animation is amazingly easy to work with. Very cool, and I've been able to animate transitions, flips, fades etc. throughout the app very easily. Question: During the flip transition, the background visible 'behind' the two views during the flip is white and I'd like it to be black. I've: Set the background of the containing view (self.view above) - no dice. I really thought that would work. Set the background of each view to black - no dice. I didn't think this would work although you give different things a shot to understand better :) Google'd like crazy; keep landing on Safari-related listings. Thanks in advance!

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  • Simultaneous gesture recognizers in Iphone SDK

    - by minaevs
    I need to catch two different swipping gestures using UISwipeGestureRecognizer(for example, UISwipeGestureRecognizerDirectionRight and UISwipeGestureRecognizerDirectionLeft). When I add two different recognisers with addGestureRecognizer method, only last added recognizer works. I've read that I need to implement gestureRecognizer:shouldRecognizeSimultaneouslyWithGestureRecognizer: method of UIGestureRecognizerDelegate protocol, but nothing works. Can anyone help with simple example of catching two or more same gestures? Thanks!

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  • Strange problem in Action sheet when click the Cancel Button in iphone

    - by Pugal Devan
    Hi, I have used action sheet in my view. Now i have faced one strange problem. If i clicked the cancel button, it dismissal the action sheet. But i clicked the cancel button, it works only Half part of the button(upper side only). Other part i clicked it doesnt work. (Half portion of the button only works. Eg: actionsheet size 320X40. clicking works only 320X20. Other part doesnt work). I have already used action sheet in many applcations. But i donno what i m doing wrong?. Please find me the problem where it is? See my code is, I have declared also UIActionsheetDelegate in interface class. - (void)viewDidLoad { UIBarButtonItem *addButton = [[[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Share", @"") style:UIBarButtonItemStyleBordered target:self action:@selector(popupActionSheet)] autorelease]; self.navigationItem.rightBarButtonItem = addButton; } -(void)popupActionSheet { UIActionSheet *popupQuery = [[UIActionSheet alloc] initWithTitle:@"Share Post" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Email",@"Facebook",@"Twitter",nil]; popupQuery.actionSheetStyle = UIActionSheetStyleDefault; [popupQuery showInView:self.view]; [popupQuery release]; } Please help me out. Thanks.

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  • Iphone UIScrollView and multiple visible images

    - by joynes
    Hi! Im trying to implement a UIScrollView including multiple images, using paginate. The problem is that I want more then one page to be visible in the UIScrollView, but only one page should be selected. I found several solutions in which you handle touch down/up (touchesBegan and touchesEnded) myself and scrollRectToVisible, but I want to avoid this if possible. A sample solution for that can be found at: http://forums.macrumors.com/showthread.php?t=634462 I dont get why its so easy if you only need to display one page at a time in the UIScrollView , but seems really hard if you want to show more pages. Could you solve it with zooming? /Br Johannes

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  • iphone Three20 TTNavigator UITabbarController

    - by Ward
    Not sure if what I want to do makes sense, but I want to take advantage of the UITabBarController and the TTNavigator from Three20. Any tutorials around that demonstrate how this can be done? I understand how to add view controllers to the navigator using the TTURLMap, but do I need to add a navigator for each tabbar item? I'm lost.

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  • iPhone: Changing CGImageAlphaInfo of CGImage

    - by TechZen
    I have a PNG image that has an unsupported bitmap graphics context pixel format. Whenever I attempt to resize the image, CGBitmapContextCreate() chokes on the unsupported format (Error formatted for easy reading): CGBitmapContextCreate: unsupported parameter combination: 8 integer bits/component; 32 bits/pixel; 3-component colorspace; kCGImageAlphaLast; 1344 bytes/row. The list of supported pixel formats definitely does not support this combination. It appears I need to redraw the image and move the alpha channel information to kCGImageAlphaPremultipliedFirst or kCGImageAlphaPremultipliedLast. I have no idea how to go about doing this. There is nothing unusual about the PNG file and it isn't corrupted. It works in all other context just fine. I encountered this error just by chance but obviously my users might have similarly formatted files so I will have to check my app's imported images and correct for this problem.

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  • iPhone provisioning profile suddenly stops working (not expired)

    - by Tristan
    Hey there! We have a couple of iPhones in our office. All of them have provisioning profiles installed on them. One of the phones (my bosses :S) all of a sudden won't allow me to install apps to it, complaining that a valid provisioning profile cannot be found. The profile isn't expired, and the problem is, I'm guessing, not with the XCode files, as I can install the same project to all the other phones. Does anyone know why this might have occurred or how I can fix this? Thanks! Tristan

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  • iphone initializing tab bar controller view programatically

    - by unsorted
    I want to initialize my tab bar controller programatically, but I just get a blank screen with the code I have. I tried to imitate TheElements sample app, and stuff seems comparable going line-by-line, but obviously something's wrong. Any suggestions? Thanks... In main.m: #import <UIKit/UIKit.h> int main(int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; int retVal = UIApplicationMain(argc, argv, nil, @"DubbleWrapAppDelegate"); [pool release]; return retVal; } In DubbleWrapAppDelegate.h: @interface DubbleWrapAppDelegate : NSObject <UIApplicationDelegate, UITabBarControllerDelegate> { UIWindow *window; UITabBarController *tabBarController; } @property (nonatomic, retain) IBOutlet UIWindow *window; @property (nonatomic, retain) IBOutlet UITabBarController *tabBarController; @end In DubbleWrapAppDelegate.m: @implementation DubbleWrapAppDelegate @synthesize window; @synthesize tabBarController; - init { if (self = [super init]){ // initialize to nil window = nil; tabBarController = nil; } return self; } - (void)applicationDidFinishLaunching:(UIApplication *)application { SafeTableViewController *vc1 = [[SafeTableViewController alloc] initWithStyle:UITableViewStylePlain]; [vc1 setSafeItems:[SafeItem knownSafeItems]]; // Set the list of known SafeItems: UINavigationController *nc1; nc1 = [[UINavigationController alloc] initWithRootViewController:vc1]; [vc1 release]; BoxXRayTableViewController *vc2 = [[BoxXRayTableViewController alloc] initWithStyle:UITableViewStylePlain]; UINavigationController *nc2; nc2 = [[UINavigationController alloc] initWithRootViewController:vc2]; [vc2 release]; AboutLibertyViewController *vc3 = [[AboutLibertyViewController alloc] init]; UINavigationController *nc3; nc3 = [[UINavigationController alloc] initWithRootViewController:vc3]; [vc3 release]; NSArray* controllers = [NSArray arrayWithObjects:nc1, nc2, nc3, nil]; tabBarController = [[UITabBarController alloc] init]; tabBarController.viewControllers = controllers; [controllers release]; // Add the tab bar controller's current view as a subview of the window window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease]; [window setBackgroundColor:[UIColor redColor]]; [window addSubview:tabBarController.view]; [window makeKeyAndVisible]; [nc1 release]; [nc2 release]; [nc3 release]; } The plist is set so that there is no NIB file referenced.

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  • How to call JSON asynchronous in xcode/ iphone develope

    - by Frames84
    I'm using the JSON framework hosting on Google. What and it's a news app that loads JSON feeds, when app goes off to load the feed I want to display the UIActivityIndicatorView but I've found my JSON Access code is not being called asynchronous which is locking the user interface. I have highlighted the function in the code and can't figuree out without breaking how to change the code. #import "JSON DataAccess Wrapper.h" #import "JSON.h" @implementation JSON_DataAccess_Wrapper @synthesize dataItemList; ////////////////////////////////////////////// /* START FEED CONNECTION/ HANDLE METHODS */ ////////////////////////////////////////////// - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [responseData setLength:0]; } - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [responseData appendData:data]; } - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { //label.text = [NSString stringWithFormat:@"Connection failed: %@", [error description]]; } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { [connection release]; } - (NSString *)stringWithUrl:(NSURL *)url { NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReturnCacheDataElseLoad timeoutInterval:30]; NSData *urlData; NSURLResponse *response = nil; NSError *error = nil; /* HOW TO MAKE THE CALL BELOW ASYNCHRONOUS */ urlData = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error]; return [[NSString alloc] initWithData:urlData encoding:NSUTF8StringEncoding]; } -(id) objectWithUrl:(NSURL *)url { SBJSON *jsonParser = [SBJSON new]; NSString *jsonString = [self stringWithUrl:url]; return [jsonParser objectWithString:jsonString error:NULL]; } - (NSMutableArray *) downloadJSONFeed { id response = [self objectWithUrl:[NSURL URLWithString:@"http://www.mysite.co.uk/index2.php?option=JSON"]]; NSMutableArray *feed = (NSMutableArray *) response; return feed; }

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  • Creating an MJPEG Viewer Iphone

    - by Tony
    Hey all, Im trying to make a MJPEG viewer in Objective C but I'm having a bunch of issues with it. First off, Im using AsyncSocket(http://code.google.com/p/cocoaasyncsocket/) which lets me connect to the host. Here's what I got so far NSLog(@"Ready"); asyncSocket = [[AsyncSocket alloc] initWithDelegate:self]; //http://kamera5.vfp.slu.se/axis-cgi/mjpg/video.cgi NSError *err = nil; if(![asyncSocket connectToHost:@"kamera5.vfp.slu.se" onPort:80 error:&err]) { NSLog(@"Error: %@", err); } then in the didConnectToHost method: - (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port{ NSLog(@"Accepted client %@:%hu", host, port); NSString *urlString = [NSString stringWithFormat:@"http://kamera5.vfp.slu.se/axis-cgi/mjpg/video.cgi"]; NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; [request setURL:[NSURL URLWithString:urlString]]; [request setHTTPMethod:@"GET"]; //set headers NSString *_host = [NSString stringWithFormat:host]; [request addValue:_host forHTTPHeaderField: @"Host"]; NSString *KeepAlive = [NSString stringWithFormat:@"300"]; [request addValue:KeepAlive forHTTPHeaderField: @"Keep-Alive"]; NSString *connection = [NSString stringWithFormat:@"keep-alive"]; [request addValue:connection forHTTPHeaderField: @"Connection"]; //get response NSHTTPURLResponse* urlResponse = nil; NSError *error = [[NSError alloc] init]; NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error]; NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; NSLog(@"Response Code: %d", [urlResponse statusCode]); if ([urlResponse statusCode] >= 200 && [urlResponse statusCode] < 300) { NSLog(@"Response: %@", result); //here you get the response } } This calls the MJPEG stream, but it doesn't call it to get more data. What I think its doing is just loading the first chunk of data, then disconnecting. Am I doing this totally wrong or is there light at the end of this tunnel? Thanks!

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  • iPhone app running in Instruments fails with unrecognized selector

    - by Mark Smith
    I have an app that appears to run without problems in normal use. The Clang Static Analyzer reports no problems either. When I try to run it in Instruments, it fails with an unrecognized selector exception. The offending line is a simple property setter of the form: self.bar = baz; To figure out what's going on, I added an NSLog() call immediately above it: NSLog(@"class = %@ responds = %d", [self class], [self respondsToSelector:@selector(setBar:)]); self.bar = baz; On the emulator (without Instruments) and on a device, this shows exactly what I'd expect: class = Foo responds = 1 When running under Instruments, I get: class = Foo responds = 0 I'm stumped as to what could cause this. Perhaps a different memory location is getting tromped on when it's in the Instruments environment? Can anyone suggest how I might debug this?

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  • iphone cannot rotate views in TabBar controller

    - by Luc
    Hello, I am working on an application that consists of a TabBar controller. Within on of its tab, I have a subclass of UITableViewController, within this list I have a Core-plot graph in the first cell and some other data in the 4 following cells. When I return YES in the shouldAutorotateToInterfaceOrientation method, I would expect the autoresizing of the list view to happen, but... nothing. When I add some log in the willRotateToInterfaceOrientation method, they are not displayed. Is there something I missed ? Thanks a lot, Luc // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations //return (interfaceOrientation == UIInterfaceOrientationPortrait); NSLog(@"Orientation"); return YES; } - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { [super willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration]; NSLog(@"Rotating"); if (toInterfaceOrientation == UIInterfaceOrientationLandscapeRight) { NSLog(@"view land:%@", self.view); } if (toInterfaceOrientation == UIInterfaceOrientationPortrait) { NSLog(@"view portrait:%@", self.view); } }

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  • IPhone SDK Default NSUserDefaults...

    - by Harry
    I have set up the user defaults to record a integer for a UISlider, the problem is that, if the user has only just installed the app then the integer is zero or NULL. Is there a way to detect if it = NULL with a integer? heres my code i have so far: -(void)awakeFromNib { NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults]; senset = [prefs integerForKey:@"senset"]; senset = sensitivity.value; } - (IBAction) setSens { senset = sensitivity.value; } - (IBAction) goBackopt { { NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults]; [prefs setInteger:senset forKey:@"senset"]; [prefs synchronize]; } } senset is the integer. i have tried this code, and it sets it to 25 on the first time, but then if i try and overwrite it, it wont work and keeps setting it to 25. :( if ( [prefs integerForKey:@"senset"] == NULL ) { senset = 25; } Please help :P Harry

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  • iPhone app memory leak

    - by Marian Busoi
    Any idea why this code gives me a memory leak? As you can see, I'm running out of ideas as to what I can do to stop it. (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; NSArray *allSketches = [project.sketches allObjects]; NSMutableArray *temp = [[NSMutableArray alloc] initWithArray:allSketches]; if(sketchesArray != nil) [sketchesArray release]; [self setSketchesArray:temp]; [allSketches release]; allSketches = nil; [temp release]; temp = nil; } I also release sketchesArray inside viewDidDissapear. I'm not using viewDidLoad and dealloc to init/release these objects as what I am doing requires me to use viewWillAppear and viewDidDissapear. Thanks

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  • How to switch versions of iPhone SDK?

    - by mobibob
    Now that I installed SDK 3.2 for my iPad development, I need to build with the previous version for my old iTouch. Is this possible to switch or do I have to uninstall 3.2, install 3.1.x and re-install 3.2 in a "versioned" folder?

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  • navigationController -- advertisement -- tableView in iPhone

    - by SeniorLee
    I've already implemented an app that has navigationController at the very top, and it shows tableView at the first, and if it's cell is clicked, another view is pushed into the navigationController. It's just an simple & normal app. But I want to put an ad between the navigationBar and the tableView. I've tried this and that. but it didn't work. Maybe there are several good ways to do it I believe. Hope somebody point me a good tutorial or throw me ideas. thanks.

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  • ERROR: iPhone Private Frameworks "No such file or directory"

    - by WrightsCS
    I have added Private Frameworks To my project. When I build in DEVICE | RELEASE everything works fine and I am able to ldid -S the application and it successfully launches on my device. However, when trying to BUILD AND GO in Simulator, I get the error "No such file or directory" as indicated below: (I also get the error twice which is strange too.) Line Location HomeProfileViewController.h:10: error: BluetoothManager/BluetoothManager.h: No such file or directory Below are the project and build settings that I currently have, maybe someone can find a mistake and let me know, that would be awesome! PROJECT SETTINGS: PRIVATE_HEADERS_FOLDER_PATH = "/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include" PUBLIC_HEADERS_FOLDER_PATH = "/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include" USER_HEADER_SEARCH_PATHS = "/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include" OTHER_CFLAGS = "-I/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include-I/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/include-I/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/gcc/arm-apple-darwin9/4.0.1/include-F/System/Library/Frameworks-F/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/Frameworks-F/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/PrivateFrameworks-DMAC_OS_X_VERSION_MAX_ALLOWED=1050" TARGET BUILD SETTINGS: PRIVATE_HEADERS_FOLDER_PATH = "/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/PrivateFrameworks" FRAMEWORK_SEARCH_PATHS = "$(inherited) $(SDKROOT)$(SYSTEM_LIBRARY_DIR)/PrivateFrameworks" USER_HEADER_SEARCH_PATHS = "/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include/**" OTHER_CFLAGS = "-I/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include-I/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/include-I/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/gcc/arm-apple-darwin9/4.0.1/include-F/System/Library/Frameworks-F/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/Frameworks-F/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/PrivateFrameworks-DMAC_OS_X_VERSION_MAX_ALLOWED=1050" Note: The quotation marks in the paths aren't actually in my project, I put them in so the site will syntax them better. Cydia

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  • Can NSDictionary be used with TableView on iPhone?

    - by bobo
    In a UITableViewController subclass, there are some methods that need to be implemented in order to load the data and handle the row selection event: - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; //there is only one section needed for my table view } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [myList count]; //myList is a NSDictionary already populated in viewDidLoad method } - (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] autorelease ]; } // indexPath.row returns an integer index, // but myList uses keys that are not integer, // I don't know how I can retrieve the value and assign it to the cell.textLabel.text return cell; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // Handle row on select event, // but indexPath.row only returns the index, // not a key of the myList NSDictionary, // this prevents me from knowing which row is selected } How is NSDictionary supposed to work with TableView? What is the simplest way to get this done?

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