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  • How should child views of UIScrollView report their bounds for contentSize?

    - by Mike
    I'm looking more for advice on the correct design for a view. What I have is a UIScrollView that contains one or more custom Views I have created. My problem is, who reports to the scrollview what it's contentSize should be? I have the following: UIView +-UIScrollView +-CustomView 1 with dynamic height depending on data +-CustomView 2 with dynamic Height depending on data The UIViewController creates new instances of the custom views with data and then adds them as subviews to the UIScrollView. The problem I'm having is how to set the value of the scrollview's contentSize? Right now, I'm not doing that and the contents of the scrollview are clipped with no scrolling possible. Should the custom view call [parent setContentSize:] in its drawRect:? Should the UIViewController query the custom view after creation to get its bounds and then call setContentSize? Should I subclass the UIScrollView to override addSubView to query each subview's height? Is there something else I'm missing? I hope I explained that properly. I'm new to this and still getting a handle on things.

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  • How to smooth the edge of a zig-zag line?

    - by Horace Ho
    Currently I draw a zig-zap line by CGContextMoveToPoint, CGContextAddLineToPoint, and CGContextStrokePath, following touchesMoved events. How can I smooth the edges of the line? Such that when the user draw a circle-like shape, the circle can be more round'ed. The GLPaint example use OpenGL, is that the only way to do it?

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  • Backspace in UITextView substringToIndex , app is crashing .

    - by user271753
    Hey Guys check this code ( My Custom Keyboard) : -(IBAction) updateTextBackSpace:(id)sender { if([txtview.text length]>0) { NSString *deletedLastCharString = [txtview.text substringToIndex:([txtview.text length]-1)]; [txtview setText:deletedLastCharString]; } else { NSLog("End"); } I am able to erase the letters ( backspace ) but after the first letter is erased and if I press backspace one more time then the application crashes .. AND the main thing is that I can't figure out how to change this code so that , I can erase any text in any give line at the cursor, the backspace starts to erase from end of the line . Please Help

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  • Facebook Connect Post Feed from iPhone App without preview Broken!? URGENT!

    - by nephilite
    Hello All: I just downloaded the latest FBConnect build, popped in my keys and getting a mysterious hanging error only when I try to post a feed without previewing (setting preview to zero). The activity indicated disappears and the blank dialog window just hangs there. (This mirrors what I was getting on the app I was developing). If I try to post a feed with preview it works; set preview to zero it just hangs. Again; thats with the sample project "Publish Feed" button. Hitting getting permission button and then Publish Feed does same thing...... Other Developers have confirmed seeing this too...Apps that have previously had working feed posts have been broken for weeks. Discussions on facebook connect forum seem to be related to this. More Info Here: http://forum.developers.facebook.com/ I have to submit my app to apple in less than 3 hours... please assist!

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  • Accessory view in UITableView: view doesn't update

    - by Kamchatka
    I'm trying to add checkmarks to items when the user select rows in a table view. However, the view is not refreshed and the checkmarks do no show up: - (void)tableView:(UITableView *)tv didSelectRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell* oldCell = [self tableView:tv cellForRowAtIndexPath:[NSIndexPath indexPathForRow:selectedIndex inSection:0]]; oldCell.accessoryType = UITableViewCellAccessoryNone; if (indexPath.section == 0) { selectedIndex = indexPath.row; } UITableViewCell* newCell = [self tableView:tv cellForRowAtIndexPath:indexPath]; newCell.accessoryType = UITableViewCellAccessoryCheckmark; [tv deselectRowAtIndexPath:indexPath animated:NO]; } What could be a reason for that?

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  • App dies on startup but not crash report

    - by brettr
    I've given an ad hoc version of my app to some users. Two of them have the app die on start up while one user has no issues. I can also install the ad hoc without issue...but that is always the case for me. One user sent the info below from the Xcode Organizer Console. They didn't find any crash logs. I don't know what to make of the info below. The one thing that stands out is "Permission denied". I place the provisioning and myapp.app files in a dropbox folder. The user then retrieves the files from the same location. I've run codesign against the .app file in the dropbox and get valid output: codesign -vvvv myapp.app myapp.app: valid on disk myapp.app: satisfies its Designated Requirement Any one have some ideas how I can figure out why the app doesn't work for this user? Here is the Console output from one user. They couldn't find any associated crash logs: Stats totalMLSITDBPostProcessing=5.31s commands=0.01 misc=0.45s icuSort=4.41s (MLS_icu_data=0.23s, MLS_icu_sec_data=0.13, dropIdx=0.04, normalize=0.13, update_orders=1.31, tStatsICUOther1=0.02, createIndex=2.50) Sun Dec 13 12:35:04 unknown com.apple.launchd[1] <Error>: (UIKitApplication:com.cygen.myapp[0x8cb6]) posix_spawn("/var/mobile/Applications/4B036396-3294-4E0A-BBCC-4118E72846D4/myapp.app/myapp", ...): Permission denied Sun Dec 13 12:35:04 unknown com.apple.launchd[1] <Warning>: (UIKitApplication:com.cygen.myapp[0x8cb6]) Exited with exit code: 1 Sun Dec 13 12:35:04 unknown SpringBoard[24] <Warning>: Failed to spawn myapp. Unable to obtain a task name port right for pid 179: (os/kern) failure Sun Dec 13 12:35:04 unknown com.apple.launchd[1] <Warning>: (UIKitApplication:com.cygen.myapp[0x8cb6]) Throttling respawn: Will start in 2147483647 seconds Sun Dec 13 12:35:04 unknown SpringBoard[24] <Warning>: Application 'myapp' exited abnormally with exit status 1 Sun Dec 13 12:35:10 unknown springboardservicesrelay[155] <Warning>: Unable to parse property list data of length: 0 Sun Dec 13 12:35:13 unknown com.apple.launchd[1] <Error>: (UIKitApplication:com.cygen.myapp[0x3ce5]) posix_spawn("/var/mobile/Applications/4B036396-3294-4E0A-BBCC-4118E72846D4/myapp.app/myapp", ...): Permission denied Sun Dec 13 12:35:13 unknown com.apple.launchd[1] <Warning>: (UIKitApplication:com.cygen.myapp[0x3ce5]) Exited with exit code: 1 Sun Dec 13 12:35:13 unknown SpringBoard[24] <Warning>: Failed to spawn myapp. Unable to obtain a task name port right for pid 182: (os/kern) failure Sun Dec 13 12:35:13 unknown com.apple.launchd[1] <Warning>: (UIKitApplication:com.cygen.myapp[0x3ce5]) Throttling respawn: Will start in 2147483647 seconds Sun Dec 13 12:35:13 unknown SpringBoard[24] <Warning>: Application 'myapp' exited abnormally with exit status 1

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  • Sorting Table Cells based on data from NSArray

    - by Graeme
    Hi, I have an NSArray which contains information from an RSS feed on dogs, such as [dog types], [dog age] and [dog size]. At the moment my UITableView simply displays each cell on each dog and within the cell lists [dog types], [dog age] and [dog size]. I want to be able to allow users of my app to "sort" this data based on the dog name, dog size or dog age when they press a UIButton in the top nav-bar. I'm struggling to work out how to filter the UITableView based on these factors, so any help is appreciated. Thanks.

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  • Zooming image in a scroll view

    - by iSharreth
    I want to zoom an image in a scroll view. I used the below code. All are working fine, but the image is not zooming. Anyone please help. I am a beginner in iPhone app development. I had connected the delegate to files manager and set max zooming to 5 I can see the image. But how can I zoom it. IBOutlet UIScrollView *scrForImg; IBOutlet UIImageView *imgForScr; (void)viewDidLoad { [super viewDidLoad]; NSString *imagePath = [NSString stringWithFormat:@"myImage.png"]; imgForScr.image = [UIImage imageNamed:imagePath]; } -(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{ return imgForScr; }

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  • how do I call create a name of a button variable in a code, with a number in it? (hard to explain)

    - by Sam Jarman
    Ive got a int, that is changed in a previous method, that now has to be part of the name of a button variable eg int numberFromLastOne; numberFromLastOne = 4; I then want to get 'button4' to do something. Could i use something like this? [[button@"%d", numberFromLastOne] doSomethign:withSomethignElse]; Ive never had to do something this before.... Any ideas would be appreciated :) Sam

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  • off a sound effect with NSUserDefaults

    - by Momeks
    i try to off a sound effect on my app play method is [myMusic play]; ' BOOL soundIsOff = [defaults boolForKey:@"sound_off"]; //the problem is here //xcode compiler doesn't copile this code [myMusic play] = soundIsOff; sound code : ///sound effect ', NSString * musicSonati = [[NSBundle mainBundle] pathForResource:@"sound" ofType:@"wav"]; myMusic = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:musicSonati] error:NULL]; myMusic.delegate = self; myMusic.numberOfLoops = 0;

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  • Checking the time in Objective-c?

    - by Moshe
    how can I get the current time in hh:mm format? I need to be able to tell between AM and PM and compare between the current time and a second time as well. I'm sure it's a silly function but i can't seem to figure it out.

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  • How to keep track of NSManagedObjects created in core-data persistently.

    - by KayKay
    In my application i am using core-data to store information and saving these data to the server using web-connectivity i have to use MySql. Basically what i want to do is to keep track of number of NSManagedObject already created and Whenever i am adding new NSManagedObject, based on that counting it will assign the class a Int_value which will act as primary_key in MySql. For examaple, there are already 10 NSManagedobjects, and when i will add new one it will assign it "11" as primary_key. these value will have to be increasing because there is no deleting of NSManagedObject. From my approach its about static member in applicationDelegate whose initial value can be any integer but should be incremented by one everytime new NSManagedObject is created and also it should be persistent. I am not clear how to do this, please give me suggestions. Thanks in advance.

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  • Tunning up Activity with dialog theme

    - by Gaks
    I need to launch a Dialog from home screen widget, so I created an Activity with android:theme="@android:style/Theme.Dialog" The problem is, that I would like make it look like standard dialog window ( buttons on the gray background, font and text size, paddings etc), like here: This is how my "dialog" Activity looks like: Is there some standard way (theme?) to make it look like standard system dialogs? Or do I have to imitate it in my own layout?

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  • Enhanced Podcasts and MPMoviePlayerViewController

    - by Ben Robinson
    Hi, This is a bit of an odd/specific one - possibly a bug? I'm using MPMoviePlayerViewController to play a variety of files, including Enhanced Podcasts - these are audio files, but with a slideshow of images, often created using GarageBand. Until (i think) iOS 3.2 they weren't supported at all, now they are and play fine in the iPod app, but in my app the slideshow doesn't start, the full screen movie player opens, and the audio begins, but all I see is the QuickTime logo. If I scrub the track the pictures appear - and will continue to play correctly - but I see nothing if I don't scrub! Any ideas?? On a related note, these files also include a small rectangluar button containing an (i) button on the right hand side - anybody know what it is or should do?! It does nothing for me!

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  • Change the background image in cocos2d

    - by Viral
    Hi all, I am making a game using cocos2d. in that I want to change the background after each second of time. I don't know how to do this in cocos2d. I am having 15 different images and one by one each image will be shown, i.e. after1 second next image will appear. I am new to cocos2d so, If any one can help me??? thank you in advance to all.

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  • Dismissing pickers and keyboards invoked by a UIWebView

    - by Dev Kanchen
    I am implementing an in-app browser using UIWebView, that shows an 'action' button up-top that - when tapped - scales the UIWebView and allows the user to perform some other actions. If, however, at the point of tapping this 'action' button, the user were entering some text on the webview, or using a picker to select an option from a drop-down list, then the webview gets scaled without dismissing the keyboard/picker. Apart from being ugly, this also obscures my main view and controls. So is there a way to make a UIWebView dismiss all associated input controls, such as keyboards/pickers, when asked to? I tried using [myWebView resignFirstResponder] but that didn't work. Any ideas? Thanks.

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  • Releasing an app - Developed on one account, releasing/approving on another

    - by stumac85
    Hi there, We have developed an application for a company who want to release it under their own account. It has been developed on our account and has had provisioning profiles attached to it from our own account. What is the best way to do this? Do I have to send them the xCode project and talk them through how to attack a provisioning profile to the project? Or can I just get their login details and create a provisioning profile from the Mac in the office and do it for them? Or is there a "transfer to different account" option? Many thanks!

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  • Playing audio from a wav file in iPhone SpeakHere example

    - by Mo
    I'm working with the iPhone SpeakHere example, and I would like to be able to play audio from either the mic (as in the example) or from a wav file. I have working code to play from a particular wav file, which looks like this: NSString *path = [[NSBundle mainBundle] pathForResource:@"basketBall" ofType:@"wav"]; AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; theAudio.delegate = self; [theAudio play]; So I'm fine with actually getting the wav to play in the application (I can hook it up to a button, etc.) but I would like it to also behave the same way pushing the "Play" button does after recorded speech, in that it should be connected to the same visualization (which I have modified quite a bit, but essentially shows the current volume, among other things). Thanks for your help!

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  • Producer Consumer Issue with Core Data

    - by Mugunth Kumar
    I've a Core Data application. In the producer thread, I pull data from a web service and store it in my object and call save. My consumer object is a table view controller that displays the same. However, the app crashes and I get NSFetchedResultsController Error: expected to find object (entity: FeedEntry; id: 0xf46f40 ; data: ) in section (null) for deletion on the console. When I debug it, everything works fine. So I understood that it's like a race issue. How is these kind of problem solved? What's the best way to design a producer-consumer app with core-data?

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