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  • Where to #include?

    - by fuzzygoat
    In my past applications I have been #importing into my *.h files where needed. I have not really thought much about this before as I have not had any problems, but today I spotted something that got me to thinking that maybe I should be #import-ing into my .m files and using @class where needed in the headers (.h) Can anyone shine any light on the way its supposed to be done or best practice? gary

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  • Add UIView Above All Other Views, Including StatusBar

    - by Mike Stead
    I'm wanting to create a view (UIControl) which blocks all input and shows a UIActivityIndicatorView while authenticating a user. The UIActionSheet and UIAlertView both manage to add a black semi-transparent view over the top of all other views to block input and I'd like to do similar. I've tried adding my view to the top UIWindow in the [[UIApplication sharedApplication] windows] array, and while this does place it above the UIKeyboard if it's visible, it doesn't place it over the StatusBar (which makes sense). My next attempt was to extend UIAlertView, remove all of its subviews and set its layer.contents = nil, then add the ActivityIndicator as a subview. This works well, but I can't seem to kill the default bouncy transition of the UIAlertView when you call it to "show". Does anyone have any pointers towards the best way tackle this problem that gives me full control? Oh and I know blocking input is not great but I do ensure it's for a short period of time and it has the benefit of making it clear to the user that their action, which must complete for them to progress, is processing.

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  • OO Objective-C design with XML parsing

    - by brainfsck
    Hi, I need to parse an XML record that represents a QuizQuestion. The "type" attribute tells the type of question. I then need to create an appropriate subclass of QuizQuestion based on the question type. The following code works ([auto]release statements omitted for clarity): QuizQuestion *question = [[QuizQuestion alloc] initWithXMLString:xml]; if( [ [question type] isEqualToString:@"multipleChoiceQuestion"] ) { [myQuestions addObject:[[MultipleChoiceQuizQuestion alloc] initWithXMLString:xml]; } //QuizQuestion.m -(id)initWithXMLString:(NSString*)xml { self.type = ...// parse "type" attribute from xml // parse the rest of the xml } //MultipleChoiceQuizQuestion.m -(id)initWithXMLString:(NSString*)xml { if( self= [super initWithXMLString:xml] ) { // multiple-choice stuff } } Of course, this means that the XML is parsed twice: once to find out the type of QuizQuestion, and once when the appropriate QuizQuestion is initialized. To prevent parsing the XML twice, I tried the following approach: // MultipleChoiceQuizQuestion.m -(id)initWithQuizRecord:(QuizQuestion*)record { self=record; // record has already parsed the "type" and other parameters // multiple-choice stuff } However, this fails due to the "self=record" assignment; whenever the MultipleChoiceQuizQuestion tries to call an instance-method, it tries to call the method on the QuizQuestion class instead. Can someone tell me the correct approach for parsing XML into the appropriate subclass when the parent class needs to be initialized to know which subclass is appropriate?

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  • How to insert/update multiple record into SQLite database in a single query.

    - by TuanCM
    Hi Guy. Is it possible to insert/update multiple record in SQLite database using EGODatabase wrapper. If I'm correct I think we can do it with FMDatabase by wrapping it between [db beginTransaction] and [db commit]. I wonder if we can do the same thing by using EGODatabase. Following is the code sample from FMDatabase project: [db beginTransaction]; i = 0; while (i++ < 20) { [db executeUpdate:@"insert into test (a, b, c, d, e) values (?, ?, ?, ?, ?)" , @"hi again'", // look! I put in a ', and I'm not escaping it! [NSString stringWithFormat:@"number %d", i], [NSNumber numberWithInt:i], [NSDate date], [NSNumber numberWithFloat:2.2f]]; } [db commit];

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  • How do I change the text size and component width of a UIPickerView?

    - by rksprst
    I have the following code to create a UIPickerView: pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0f, 416.0f - height, 320.0f, height)]; pickerView.delegate = self; pickerView.showsSelectionIndicator = YES; [pickerView setSoundsEnabled:YES]; I would like to change the component widths and change the text size in each component. Is it possible to do this? Thanks!

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  • NSMutableArray with only a particular type of objects

    - by Leo
    Hello, is it possible to specify that a NSMutableArray can only contain a certain type of objects. For example, if I want to store only this kind of objects : @interface MyObject : NSObject { UInt8 value; } In order to be able to use the instance variable like this : - (void)myMethod:(NSMutableArray *)myArray{ for (id myObject in myArray){ [self otherMethod:myObject.value]; } } because I'm getting this error : request for member 'value' in something not a structure or union Thank you for your help

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  • Custom UITableViewCell not appearing when row height is set

    - by Sheehan Alam
    I have a custom UITableViewCell which I have created in IB. My labels display when I don't over-ride: - (CGFloat)tableView:(UITableView *)tblView heightForRowAtIndexPath:(NSIndexPath *)indexPath however my content is squished. I want the height to be 120px so I have the following: - (CGFloat)tableView:(UITableView *)tblView heightForRowAtIndexPath:(NSIndexPath *)indexPath { CGFloat rowHeight = 120; return rowHeight; } I'm not sure why the content inside of my UITableViewCell all of a sudden disappears?

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  • How can I get a custom UITableView to automatically scroll to a selected text field?

    - by nornagon
    I have a UITableView, which I am controlling from a custom UIViewController. When the user clicks the 'add' button, I add a row to the UITableView with a text field in it, and make it the first responder. The problem is, when the bottom of the table is out of view (or hidden by the keyboard), the UITableView doesn't scroll to bring the text field into view. UITableViewController does this automatically, but my View Controller can't be a subclass of UITableViewController.

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  • Plist array , cannot change dictonaries inside

    - by Andy Jacobs
    i have a plist that's at its root an array with dictonaries inside it. i load a plist from my recourses as an NSMutableArray. [NSMutableArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"Filters" ofType:@"plist"]] i store it into nsuserdefault because it has to be persistent between startups. [[NSUserDefaults standardUserDefaults] setObject:array forKey:@"filters"]; but i can't change the dictonaries in the array because they are not mutable. how can i make them mutable?

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  • Object sent -autorelease too many times

    - by mongeta
    I have this code that simple returns Today's date as a string formatted: +(NSString*) getTodayString_YYYY_MM_DD { NSDate * today = [NSDate date]; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd"]; return [[formatter stringFromDate:today] autorelease]; } With instruments I'm not getting a memory leak, but when I Analyze, XCode says: Object sent -autorelease too many times If I understand correctly, I have to release manually the formatter as I'm creating it using 'alloc', but I can't release here because I have to return the value, so I add the autorelease. How I can do it better to improve it ? thanks, r.

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  • How to get rid of gap when I add my custom UIViewController to window?

    - by wgpubs
    I'm getting this gap at the bottom of my window after I add the view of a custom UIViewController. The gap goes away as the view is shifted down after I move to another view and then back. Here is the code in the app delegate: - (void)applicationDidFinishLaunching:(UIApplication *)application { // Override point for customization after application launch CustomViewController *gvc = [[CustomViewController alloc] init]; self.customViewController = gvc; [gvc release]; [window addSubview:customViewController.view]; [window makeKeyAndVisible]; } "CustomViewController" is used as a root view controller to simply coordinate which other UIViewControllers to display. As such I simply set its view = to that of the first ViewController's view needed like so: - (void)loadView { UIView *v = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)]; self.view = v; [v release]; // Add the HomeViewController to the top of the stack MainViewController *mvc = [[MainViewController alloc] initWithNibName:@"MainView" bundle:nil]; mvc.delegate = self; self.mainViewController = mvc; [mvc release]; [self.view addSubview:self.mainViewController.view]; } I've tried a bunch of things including what you see here with no luck. Any ideas? thanks

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  • NSMutableArray & Multiple Views

    - by Antonio
    I am trying to write an application that has a NSMutableArray that needs to be accessed and modified in a different View. The MainViewController displays a table that gets the information from an NSMutableArray. The SecondaryViewController is used to addObjects into the array. How do I go about this without declaring it as a global variable?

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  • What can cause Bonjour to not call me back during browsing?

    - by millenomi
    I have a rather popular Bonjour-based application in App Store. It works perfectly, but around 0.2% of my users report a bizarre bug: "no arrows appear on the edges of the screen, so I can't share stuff with other people!". Needless to say, displaying these arrows is tied to the browsing of a particular Bonjour service on the local domain. The problem is, the Apple review team seems to intermittently happen to be in this 0.2%. This isn't good for review results, as you might imagine. No matter how much I try, I cannot reproduce this bug. From the few logs I have, it looks like my app is running correctly, just not receiving NSNetServiceBrowser delegate calls. What can cause this? Things I've tried: Having a shorter service name < 14 chars in length to be in spec. Publishing on @"local." rather than @"" (aka Go Look For The Default Registration Domain). My app is rather useless on a wide-area network anyway. Things I haven't tried: restarting the browsing machinery periodically. (I have two browsers, though, one looking for the legacy longer name, one for the new shorter one.) What to do?

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  • Need unicode characters in UITableView from SQLlite database

    - by Lee Armstrong
    I have some NSString varibales that incude items like Ð and Õ and if I do cell.textLabel.text = person.name; and if it contains one of those characters the cell.textlabel is blank! I have discovered that if I use NSString *col1 = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)]; To pull my data back it pulls back null, however using the deprectared method NSString *col1 = [NSString stringWithCString:(char *)sqlite3_column_text(compiledStatement, 0)]; Shows the characters! Any ideas?

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  • Calling UITableViews delegate methods directly.

    - by RickiG
    Hi I was looking for a way to call the edit method directly. - (void)tableView:(UITableView *)theTableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath I have all my logic for animating manipulated cells, removing from my model array etc. in this method. It is getting called when a user swipes, adds or rearranges, but I would like to call it manually/directly as a background thread changes my model. I have constructed an NSIndexPath like so: NSIndexPath *path = [NSIndexPath indexPathForRow:i inSection:1]; I just can't figure out how to call something like: [self.tableview commitEditingStyle:UITableViewCellEditingStyleDelete forRowAtIndexPath:path]; Do I need to gain access to the methods of this plain style UITableView in another way? Thanks:)

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  • Tap Status Bar Time

    - by Jim Bonner
    I am using a UITableView in my app. After scrolling down, if I tap on the status bar time, the table is repositioned to the top. Any idea how this is done and is it possible to intercept the action. TIA, Jim B

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  • UITabBarController "More" tab issues

    - by codemonkey
    I've got a UITabBarController with 7 tabs. Each of the 7 tabs has its own UINavigationController and customizes its toolbar. When a view is loaded via the UITabBarController's "More" menu its custom toolbar isn't appearing. If i switch the order of the views around so that the same view is now accessible from the UITabBar without going through the "More" menu then the custom toolbar shows up like it's supposed to. Is there a way to customize a NavigationController's toolbar when that NavigationController is loaded via the "More" menu of a TabBarController? I'm actually also interested in replacing the "More" menu navigation controller with my own custom one on views loaded via the "More" menu... not sure whether that's even possible. Any feedback will be appreciated.

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  • dynamic row height

    - by Prasanna Venkatesh
    static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@""]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } //cell.backgroundView = [[[CustomCell alloc] init] autorelease]; cell.selectedBackgroundView = [[[CustomCell alloc] init] autorelease]; // At end of function, right before return cell: cell.textLabel.backgroundColor = [UIColor clearColor]; // Configure the cell. UILabel *myLabel1 = [[UILabel alloc] initWithFrame:CGRectMake(-30, 3, 300, 22)]; UILabel *myLabel2 = [[UILabel alloc] initWithFrame:CGRectMake(10, 22, 310, 200)]; UILabel *myLabel3 = [[UILabel alloc] initWithFrame:CGRectMake(0, 170, 300, 20)]; Book *aBook = [appDelegate.books objectAtIndex:indexPath.row]; myLabel1.text=aBook.title; myLabel2.text=aBook.description; myLabel3.text=aBook.pubDate; NSString *desc = aBook.description; if ([desc isEqualToString:nil]) { NSLog(@"nullll lll "); } //myLabel2.textAlignment=UITextAlignmentCenter; myLabel2.numberOfLines=5; myLabel2.textColor=[UIColor blueColor]; myLabel2.lineBreakMode=UILineBreakModeWordWrap; myLabel2.font=[UIFont systemFontOfSize:14]; myLabel3.numberOfLines=1; myLabel1.numberOfLines=1; myLabel1.textColor=[UIColor redColor]; myLabel1.font=[UIFont systemFontOfSize:20]; myLabel1.shadowColor=[UIColor redColor]; myLabel1.backgroundColor=[UIColor grayColor]; [cell.contentView addSubview:myLabel1]; [cell.contentView addSubview:myLabel2]; [cell.contentView addSubview:myLabel3]; hi guys! i have this following code, i want to display this from xml file. now its working but static row height. if the xml file dont have data then it leaves it as blank. so i want to change row height according to the data i provide using the mylabel1,2,3.text

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  • Setting UIActivityIndicatorView while view is prepared

    - by iFloh
    Hi, I have a UITabbBarController with a UITableView. Under certain circumstances the TabBarControllers dataset requires updating when a user arrives from another view, e.g. the initial load when the TabBarController is called the first time, or when the settings are changed. This dataset update takes about 2 seconds and I want to show an UIActivityIndicatorView. Trouble is that when I enter from another view I don't know which view to attach it to, since the loading of the tabbarController is carried out in the viewWillAppear method. Any clues how I can go about this?

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  • How do I pass a string or data object between two view controllers?

    - by Jonathan
    In my last question i asked how to best send a string from one view controller to another, both which were on a navigation stack: http://stackoverflow.com/questions/2898860/pass-string-from-tableviewcontroller-to-viewcontroller-in-navigation-stack However I just realised I can either pass the path to the file in the app's document's folder as the first (the table view) has already accessed the data in the file should I pass viewcontroller the data to the pushed VC?

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  • Update UIViewTableCell's background when accessory URL is clicked

    - by psychotik
    In the tableView:accessoryButtonTappedForRowWithIndexPath: selector, I want to update the backgroundColor of the cell. I can get the UIViewTableCell using cellForRowAtIndexPath: but I'm not sure how I can update its background color. The code beliw doesn't seem to work. [_tableView beginUpdates]; cell.backgroundColor = [UIColor grayColor]; [_tableView endUpdates]; Any suggestions?

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