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  • Which icons/buttons to use for help, about, info?

    - by 4thSpace
    I use the info button to display a settings page. This page is a modal. I need another button from here to display "About" info, since I've already used "info" for something. I have a search form that is accessed only from the modal. On the search form, I need a help icon. I can use the info button but that seems confusing, since I already use the info button from the main view to access the modal. What else can I do for help and about icons/buttons?

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  • Declaring two classes that contain instance variables of each others' types.

    - by Benji XVI
    Let’s say you wish to have two classes like so, each declaring an instance variable that is of the other’s class. @interface A : NSObject { B *something; } @end @interface B : NSObject { A *something; } @end It seems to be impossible to declare these classes with these instance variables. In order for A to include an IV of class B, B must already be compiled, and so its @interface must come before A’s. But A’s must be put before B’s for the same reason. Putting the two class declarations in separate files, and #import-ing each other’s .h doesn’t work either, for obvious reasons. So, what is the solution? Or is this either (1) impossible or (2) indicative of a bad design anyway?

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  • Set parameter to super view after dismissModalViewControllerAnimated

    - by user536926
    Hi, I have 2 view (view A and view B). In viewA when I touch a button I execute this code to flip a viewB: viewB.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:viewB animated:YES]; And now when I came back to viewA I use this code: [self dismissModalViewControllerAnimated: YES]; //here is my problem I need to set same parameters to viewA when I execute dismiss. How can I do it?

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  • Application to download video from youtube

    - by Nidal Saed
    I making an application to view videos form youtube, and I think it is very easy to write a code to make the user be able download the videos and save it in the documents folder of the application, my questions are: 1) is it legal to do this, and is there any concern of the application being rejected? 2) is it possible to make the user watch the video and when he finish (watched all the video) get this data and save it, (not to download it again since he already watched the video and downloaded it).

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  • My table cells don't highlight immediately when touched

    - by Steve Denenberg
    Hi, In my app, I have a table view that has about eight cells. There is a navigation bar at the top. When a user touches a cell, nothing happens for about 1/2 second. Then the touched cell highlights blue and immediately the new view slides into position. The problem is that there is no feedback to the user about which cell he touched until just before the new view slides into position. For example, when I explore the tables in the iPhone's Settings application, when you touch a cell, the cell immediately turns blue, and then there is a 1/2 second delay, and then you see the new view. How do I get my table's feedback of highlighting the cells to happen immediately? I am using tableView didSelectRowAtIndexPath:, and each cell has an accessory button. Thanks for any insight.

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  • Timed selector never performed

    - by sudo rm -rf
    I've added an observer for my method: [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(closeViewAfterUpdating) name:@"labelUpdatedShouldReturn" object:nil]; Then my relevant methods: -(void)closeViewAfterUpdating; { NSLog(@"Part 1 called"); [self performSelector:@selector(closeViewAfterUpdating2) withObject:nil afterDelay:2.0]; } -(void)closeViewAfterUpdating2; { NSLog(@"Part 2 called"); [self dismissModalViewControllerAnimated:YES]; } The only reason why I've split this method into two parts is so that I can have a delay before the method is fired. The problem is, the second method is never called. My NSLog output shows Part 1 called, but it never fires part 2. Any ideas? EDIT: I'm calling the notification from a background thread, does that make a difference by any chance? Here's how I'm creating my background thread: [NSThread detachNewThreadSelector:@selector(getWeather) toTarget:self withObject:nil]; and in getWeather I have: [[NSNotificationCenter defaultCenter] postNotificationName:@"updateZipLabel" object:textfield.text]; Also, calling: [self performSelector:@selector(closeViewAfterUpdating2) withObject:nil]; does work. EDITx2: I fixed it. Just needed to post the notification in my main thread and it worked just fine.

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  • UIButton At Run Time

    - by rami
    I want to create UIButton At Run Time. I Have main view in which I have Table View when I select Row it Open Sub View with Toolbar and in that I Click on Add Button on tool Bar it opens the another view in which I add My value(like name)now when I press save Button It goes back to the sub View with Toolbar and it create button with name which I save and add it in sub view But problem is when I do it again all things done well But The Button Which created previous is not seen in sub view.It display only button with name Which I save Last.

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  • deleteRowsAtIndexPaths- crahes application [closed]

    - by Tushar Chutani
    (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { NSLog(@"delet it"); // Delete the row from the data source. [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES]; } else if (editingStyle == UITableViewCellEditingStyleInsert) { // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view. } } why is this crashing my application

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  • iOS - How to pass information from the VIEW to the Controller?

    - by user1720503
    I am fairly new to programming in general, and have been following the CS193p videos on iTunesU. I am currently doing assignment 3, and am having trouble getting a bit of information from the View sent to the View Controller. I believe I have set up the whole delegation thing correctly, so the question really is to how to get my View Controller to see a bit of information (such as self.bounds.size.width), which is a property that only the View has. Would this involve using self.dataSource? And if so, through what means could I pass this bit of information? Thanks!!

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  • Delegate Method only Firing after 5 or so Button Presses?

    - by CoDEFRo
    I'm having the most bizarre problem which I'm not even close to figuring out. I have a button which fires a delegate method. Once upon a time it was working fine, but after making some changes to my code, now the delegate method only fires after I push the button x amount of times (the changes I made to the code had nothing to do with the infrastructure that connects the delegate together). It varies, it can be 5 times to 10 times. I used the analyzer to check for memory leaks and there aren't any. There is too much code for me to paste here (I don't even know where to start or where the problem could be), but I'm wondering if anyone has experienced this problem before, or what could be causing it? This is very odd and have no clue what could be causing it.

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  • UIWebView from Navigation Bar button

    - by Dixit
    Im having issue with button on a top right hand side of naviogation bar on iOS: I have a button that can launch a app.html file from app itself and show on top of current view and That popup webview can be minimize with dDone button on it, Im having issues doing this, How can i call UIWebView on top of current view and allow it to launch app.html page from app directory. Currently i have: - (BOOL)webView:(UIWebView *)webViewer shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{ } and this is a button that call that function UIBarButtonItem *showAppMenu = [[UIBarButtonItem alloc] initWithTitle:@"Help" style:UIBarButtonItemStylePlain target:self action:@selector(webView)];

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  • Putting methods in separate files

    - by Garry
    I have a class (MyClass) with a lot of methods. Consequently, the .m file has become quite difficult to read. I'm relatively new to Objective-C (having come from REALbasic) and I was wondering if it's possible to put some of the methods in MyClass into different files and then include them in the class. How would I go about this in Xcode?

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  • Remove a ReactiveCocoa signal from a control

    - by dbarros
    If I assign a signal to a property of a control: RAC(self.loginButton.enabled) = [RACSignal combineLatest:@[ self.usernameTextField.rac_textSignal, self.passwordTextField.rac_textSignal ] reduce:^(NSString* username, NSString* password) { return @(username.length > 0 && password.length > 0); }]; But then wanted to assign a different RACSignal to enabled, how can I clear any existing one before doing so? If I try and set it a second time, I get an exception like the following: 2013-10-29 16:54:50.623 myApp[3688:c07] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Signal <RACSignal: 0x975e9e0> name: +combineLatest: ( "<RACSignal: 0x975d600> name: <UITextField: 0x10f2c420> -rac_textSignal", "<RACSignal: 0x975de30> name: <UITextField: 0x10f306e0> -rac_textSignal" ) reduce: is already bound to key path "self.loginButton.enabled" on object <LoginViewController: 0x10f264e0>, adding signal <RACSignal: 0x9763500> name: +combineLatest: ( "<RACSignal: 0x97624f0> name: <UITextField: 0x10f2c420> -rac_textSignal", "<RACSignal: 0x97629e0> name: <UITextField: 0x10f306e0> -rac_textSignal" ) reduce: is undefined behavior'

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  • Singleton Creation preference

    - by cwieland
    You can create singletons in a variety of ways. I am wondering which is better between these. +(ServerConnection*)shared{ static dispatch_once_t pred=0; __strong static id _sharedObject = nil; dispatch_once(&pred, ^{ _sharedObject = [[self alloc] init]; // or some other init method }); return _sharedObject; } I could see that this compiles down to something very fast. I would think that checking the predicate would be another function call. The other is: +(ServerConnection*)shared{ static ServerConnection* connection=nil; if (connection==nil) { connection=[[ServerConnection alloc] init]; } return connection; } Are there any major differences between the two? I know these are probably similar enough to not worry about it. But Just wondering.

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  • Setting up an independent delegate?

    - by fuzzygoat
    Its common for the dataSource and delegate to be the same object, its also common for this object to be the viewController. In all the info/tutorials that I have seen online delegates are always setup as above. If I wanted to create my own class instead can anyone give me any pointers as to how I might do that. Where does that object get instantiated, how do you connect the dataSource and delegate items etc. I am using UITableView to test this.

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  • How to remove NSDate objects from a NSMutableArray

    - by Ryan
    I have been working with NSArrays and NSMutableArrays that store NSDate objects for a few days now. I noticed that calling [listOfDates removeObject:date1] removes all the NSDate objects from the array. I have instead been doing this to remove objects: NSMutableArray *dateList; // Has Dates in it NSDate *dateToRemove; // Date Object to Remove __block NSUInteger indexToRemove; __block BOOL foundMatch = NO; [dateList enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) { if ([obj isEqualToDate:dateToRemove]) { indexToRemove = idx; foundMatch = YES; *stop = YES; } }]; if (foundMatch) { [dateList removeObjectAtIndex:indexToRemove]; } Is there a better way to be doing this? Perhaps another data structure? Or a simpler function?

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  • Pre-release checklist

    - by bogdansrp
    I built an 10.6+ only app, I tested it in 32-bit and 64-bit mode and everything works (or at least I couldn't find anything wrong). I need help with the actual release build of the app. What settings should I keep an eye out for? Thanks!

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  • Sending NSMutableArray on AsycSocket

    - by user200654
    Any one knows how to write and read NSMutableArray or Dictionary data using AsycSocket Library ? Clarification: I want a way to archive NSMuatbleArray and write this on the stream. seemed pretty forward but running in simulator I get this wierd error [NSKeyedUnarchiver initForReadingWithData:]: incomprehensible archive

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