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• Cannot change UIImageView frame in a custom table cell.

  - by jkally

  I have a custom table cell. In it I have put (via the IB) an image view of a certain frame In 'cellForRowAtIndexPath', under certain conditions, I would like to modify the frame of this UIImageView, so I write something like: UIImageView *imgv = (UIImageView *)[cell viewWithTag:1]; CGRect r = CGRectMake(20.0, 20.0, 10.0, 10.0); imgv.frame = r; But nothing expected happens (The frame does move a little though not to where I want, but doesn't change its size at all);

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• TableView problem with Tab Bar!?!?!

  - by Daniel Granger

  I created a tableView which worked fine in a single view app but as soon as I changed the view controller for a Tab Bar Controller and tapped the tab for the view with the table view in I suddenly get this! What has gone wrong? [Session started at 2010-03-28 15:30:15 +0100.] 2010-03-28 15:30:17.763 LogbookTable[13473:207] *** -[UIViewController tableView:numberOfRowsInSection:]: unrecognized selector sent to instance 0x3b14d10 2010-03-28 15:30:17.765 LogbookTable[13473:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UIViewController tableView:numberOfRowsInSection:]: unrecognized selector sent to instance 0x3b14d10' 2010-03-28 15:30:17.766 LogbookTable[13473:207] Stack: ( 29303899, 2465178889, 29685819, 29255286, 29107906, 4372518, 4379894, 4378891, 3095430, 3035941, 3077376, 3065931, 55820976, 55820399, 55818438, 55817530, 2739877, 2763572, 2745983, 2773089, 37399897, 29088640, 29084744, 2739733, 2777007, 10496, 10350 )

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• UINavigationController's back button disappears?

  - by QAD

  I notice something strange happens to one of my view controller: the back button disappears, yet it's possible to go back to previous view controller by tapping the top left corner (i.e where the button should reside). In my entire file there's no line that set self.navigationItem.hidesBackButton to YES; also NSLog prints 0 as self.navigationItem.hidesBackButton's value in viewDidLoad. This occurs in both the simulator and real device. Any ideas?

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• How do i make a sound be able to hod long (read more please i need help)

  - by EstherBunny

  Ok what i need is help..haha ok im making a music app with a paino but i need to be able to hold the sound long or short. So like if i hold a button it will start playing the sound but if i let go it stops WITH A FADE so how ever long i hold the button down that is how long the sound will play (that is ntill the sound ends)

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• How i can connect the buttons to next pages and create multiple pages?

  - by ejaa

  How can i connect buttons in the example of this Project. zip Here's the link of the file--- (http://www.2shared.com/file/12046081/65fad040/Project.html). Example: Button General Information connect to 3rd page, button Trainer information connect to the next pages number. May i need to create a new .h/.m/xib file for each of the pages?? then, where's the code to connect the button to the page. Also , how (the steps) to make it true?? All of your replies i thank you all first. Very appreciated it =)

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• How do I get an UIImageView to tell me when its animation stops?

  - by Chris

  I have a UIImageView that is displaying a series of pictures as an animation. This part of the project works well. I want to display a label when the animation ends. Is there an event that the Imageview will trigger when it's animation ends?

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• Optimal way to initialize varying objects

  - by John Smith

  I have to initialize a lot of different types of objects based on an integer parameter. They all have the same overall initialization methods. At the moment I have the following code #def APPLE 1 #def PEAR 2 switch (t) { case APPLE: newobj = [[FApple alloc] init]; break; case PEAR: newobj = [[FPear] alloc] init]; break; default: retobj = nil; } I believe there must be a better way to do this. When I add FOrange I have to go and add another line here. What would be a better way?

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• Why I can't see the background image in the device, but appears on the simulator?

  - by Tattat

  Here is the viewDidLoad: [self.view setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"bg.png"]]]; It can show the simulator, but not on the device, why?? thz.

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• Customized annotation problem

  - by user128647

  I want my custom UIView (.Xib View) to appear when user tabs on pins (not apple's callOutBubble) and in that UIView there should be a button which fires an IBAction on touched down event. Therefore I have added an AddObserver method to MKAnnotationView. which responds to touch events over pin in MKMapView. I have also added 3 buttons over that XIB view, which have also assigned IBActions. But when I run my application, buttons in the customized annotation view are not responding to IBAction (Touch Down). Why does this happen, and how can I fix it? I need to call a method when those 3 buttons are tabbed.

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• How do I get started with three20?

  - by Iggy

  A few colleagues have been asking me how to get started with three20 and where they can find some materials on how to use three20

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• crash happens when NSMutableArray is returned?

  - by senthilmuthu

  Hi, I have coded like that(that function will be called again and again), but the returned object gives "BAD ACCESS", the NSLog prints correct string, but toReturn sometimes(i called again and again) gives crashes..any help to alter this code - (NSMutableArray *)getAll:(NSString *)type { NSLog(@"Type: %@", type); NSMutableArray *toReturn = [[NSMutableArray alloc] initWithCapacity:0] ; rs = [db executeQuery:Query1]; while ([rs next]) { [toReturn addObject:[rs stringForColumn:@"Name"]]; NSLog(@"name: %@", [rs stringForColumn:@"Name"]); } [rs close]; return toReturn; }

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• What is a good way for a custom accessory view in a UITableViewCell to message the table view contro

  - by Alex Gosselin

  Hi Everyone, I am working on adding a custom accessory view, (a button) to a UITableViewCell, and I need it to tell the table view when it is touched, but I can't figure out how to communicate to the table view what button was pressed. Ideally I'd like to somehow call a function like this: [controller tableView:view didSelectCustomButtonAtIndexPath:indexPath usingCell:self]; when my custom view button is pressed. Sorry if this is a bit vague, I'm not really sure how to explain this well. I am basically looking for how to mimic the implementation for tableView:didSelectRowAtIndexPath: without having to subclass UITableViewCell. Thanks for any help.

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• UIScrollView not scrolling...

  - by Mark

  I have a UIScrollView which contains many UIImageView's UILabel's etc... the labels are well longer that the UIScrollView, but when I run the app, I cannot click and scroll down... Why might this be? Thanks

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• Making sure an 'int' is bound on sqlite

  - by iphone_developer

  I have a method called like this... -(void)dbUpdate:(int)forId { Which contains this sqlite to bind and update a database. sqlite3_bind_int(UPDATE_ACCOUNT, 3, forId); When I run the query, it doesn't give me an error, but it doesn't update the database either. If I change this line of code... sqlite3_bind_int(UPDATE_ACCOUNT, 3, forId); manually, to... sqlite3_bind_int(UPDATE_ACCOUNT, 3, 6); the query runs 100% fine, as expected. Changing the variable to an actual integer proves to me that the variable 'forId' isn't being passed or bound to the query properly. What am I doing wrong? How is the best way to pass an Integer (and make sure it is an Integer) into an sqlite bind? Cheers,

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• How can I pass information between 2 different View Controllers?

  - by sagiftw

  Hi, This is a simple question: I have 2 different view controllers, and each one has its own data stored in its .m file. I want to take a value, for instance, an integer value (int i=3;) that is declared in ViewController1 and pass it to ViewController2, so I will be able to use that value in the second view controller. Can anyone please tell me how to do it? Thanks in advance, Sagiftw

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• How to get last edit point of editing a UITextView?

  - by John Smith

  I am trying to get the last editing point of a UITextView box. I have tried getting the value textView.selectedRange.location,but it always comes out as 2147483647 (which is -1). When should I read this value

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• automatically wrapping text in scrollview?

  - by senthilmuthu

  hi, i have displayed one text in UIview with UIScrollview.but when i zoom , the text goes ouside of the frame , i want to wrap automatically , any help please?

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• does clipsToBounds = YES reduce my memory footprint?

  - by mystify

  I have a pretty big view which is like 1000 x 1000. So I did clipToBounds = YES. Will this actually produce smaller bitmaps for the views?

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• The version of xcode that supports Iphone OS 3.1.2(7D11)?

  - by Abhi_Iphone_Blackberry

  HELLO, I am working on XCODE 3.1.4 , my iphone have 3.1.2 os...But as this version of xcode supports iphone os3.1.1 and below.. so plz help me as either tell me the newer version of xcode that supports iphone os 3.1.2 or should i downgrade my iphone os to 3.1.1,, any assistance is really appreciated..

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• Refreshing table data that is retrieved dynamically from JSON

  - by sudhakarilla

  Hi, I am retrieving the Json data from an URL into a table view. The problem is that i couldnt replace the old data that is retrieved, with the new data when i click another table cell. The new data is getting added to the last cell of the table cell while the old data is also getting displayed. What could be the problem...

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• What is your favorite resource for UITableView related stuff?

  - by Iggy

  What resources do folks use for UITableView related stuff? Apple's Docs seem sufficient , but am sure everyone has a UITableView reference that they use when implementing table views.

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• Use of viewDidUnoad

  - by user338111

  What is the use of viewDidUnload and didReceiveMemoryWarning methods? When they actually get called? what are the difference between dealloc, viewDidUnload and didrecievedmemorywarning?

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• rootview controller in Interface builder?

  - by senthilmuthu

  hi, i have done in didapplicationfinishing function tabBarController = [[UITabBarController alloc] init] ; tabBarController.navigationItem.title = @"News"; SimpleTableViewController *rtbfViewController = [[SimpleTableViewController alloc] init]; //initWithStyle:UITableViewStyleGrouped]; rtbfViewController.tabBarItem.title = @"News1"; rtbfViewController.tabBarItem.image = [UIImage imageNamed:@"home.png"];; UINavigationController *table2NavController = [[[UINavigationController alloc] initWithRootViewController:rtbfViewController] autorelease]; [rtbfViewController release]; it works fine .suppose if i have Navigation controller in Interface Builder,how can i set initWithRootViewController in Interface builder?

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• What does the 'a' prefix represent in aString?

  - by psoon

  I'm just looking at NSString.h and wonder why some method declaration args use (NSString *)string; while others use (NSString *)aString. What are the conventions practiced here? Thanks for any insight.

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• Will there be any conflict with other applications when my application saves data in [NSUserDefaults

  - by bobo

  After reading this thread: http://stackoverflow.com/questions/2792932/nsuserdefaults-not-present-on-first-run-on-simulator I know it's quite easy to store some app data in the [NSUserDefaults standardUserDefaults]. But if other applications also happen to use the same key to store their data, is this possible that my app data gets overwritten? Many thanks to you all.

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