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  • How can I fix this NavigationController and UIToolbar offset issue in Objective-C?

    - by editor
    I'm adding a couple of buttons to an already-existing NavigationController. The two buttons are added to a UIView, which is pushed onto the NavigationItem. The buttons stop and reload a UIWebView. Problem is that there's a slight offset issue that is making it all look pretty ugly. I wish I could set the UIToolbar to transparent or clear background but that doesn't seem to be an option. Can't seem to use negative offsets either. I've got color matching, but if you look closely there's 1px or 2px of highlighting up top that's causing a visual mismatch and then a slight offset at the bottom. Some relevant code below (based on this, inbound Googlers). What are my options to resolve this? // create a toolbar for the buttons UIToolbar* toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 100, 45)]; [toolbar setBarStyle: UIBarStyleDefault]; UIColor *colorForBar = [[UIColor alloc] initWithRed:.72 green:0 blue:0 alpha:0]; toolbar.tintColor = colorForBar; [colorForBar release]; //[toolbar setTranslucent:YES]; // create an array for the buttons NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:3]; // create a standard reload button UIBarButtonItem *reloadButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(reload)]; reloadButton.style = UIBarButtonItemStyleBordered; [buttons addObject:reloadButton]; [reloadButton release]; // create a spacer between the buttons UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil]; [buttons addObject:spacer]; [spacer release]; // create a standard delete button with the trash icon UIBarButtonItem *stopButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemStop target:self action:@selector(stopLoading)]; stopButton.style = UIBarButtonItemStyleBordered; [buttons addObject:stopButton]; [stopButton release]; // put the buttons in the toolbar and release them [toolbar setItems:buttons animated:NO]; [buttons release]; // place the toolbar into the navigation bar self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:toolbar]; [toolbar release];

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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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  • Oracle OpenWorld Preview: JavaOne Social Developer Program

    - by kellsey.ruppel
    Originally posted by Jake Kuramoto on The Apps Lab blog. If you’re heading to San Francisco later this month for JavaOne and are interested in learning about building social applications for your enterprise, you should plan to check out the Social Developer Program, organized and hosted by Roland Smart http://twitter.com/rsmartx) who recently joined Oracle after the Involver acquisition. The program runs from 10 AM to 3:30 PM on Tuesday, October 2 at the San Francisco Hilton and features speakers from Oracle, Bit.ly, Facebook, LinkedIn, and Sociable Labs. The focus is on the emergence of social within the enterprise and ends with a hackathon. That last bit got your attention? Thought it might. Here’s the skinny: In this session the staff of the Oracle Social Developer Lab will present some social development tools that make integrating social functionality into your apps easier to achieve. This session kicks off a week-long hack to build an application using OSDL code. A winner will be selected and profiled in Java Magazine. I don’t have any more details on the prize, which is sure to be epic, so you’ll just have to attend the program. In the meantime, check out their Facebook page for more information. See you in San Francisco.

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  • NSNumberFormatter to display custom labels for 10^n (10000 -> 10k)

    - by Michele Colombo
    I need to display numbers on a plot axis. The values could change but I want to avoid too long numbers that will ruin the readability of the graph. My thought was to group every 3 characters and substitute them with K, M and so on (or a custom character). So: 1 - 1, 999 - 999, 1.000 - 1k, 1.200 - 1.2k, 1.280 - 1.2k, 12.800 - 12.8k, 999.999 - 999.9k, 1.000.000 - 1M, ... Note that probably I'll only need to format round numbers (1, 10, 1000, 1500, 2000, 10000, 20000, 30000, 100000, ...). Is that possibile with NSNumberFormatter? I saw that it has a setFormat method but I don't know how much customizable it is. I'm using NSNumberFormatter cause the graph object I use wants it to set label format and I want to avoid changing my data to set the label.

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  • document directory problem?

    - by senthilmuthu
    When i write Data(53MB ) to Document directory ,the data is not written when i check directly through application support path.i coded like this, - (BOOL)writeApplicationData:(NSData *)data toFile:(NSString *)fileName { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; if (!documentsDirectory) { NSLog(@"Documents directory not found!"); return NO; } NSString *appFile = [documentsDirectory stringByAppendingPathComponent:fileName]; return ([data writeToFile:appFile atomically:YES]); } it works fine, but when i read the data using follwing code, the data is null, anyhelp pls? - (NSData *)applicationDataFromFile:(NSString *)fileName { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *appFile = [documentsDirectory stringByAppendingPathComponent:fileName]; NSData *myData = [[[NSData alloc] initWithContentsOfFile:appFile] autorelease]; return myData; }

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  • Core data, sorting one-to-many child objects

    - by Shizam
    So if I have a store of parents children and the parent has a one to many relationship to children (parent.children) and they all have first names. Now, on the initial fetch for parents I can specify a sort descriptor to get them back in order of first name but how can I request the children in order? If I do a [parent.children allObjects] it just gives them back in a jumble and I'd have to sort after the fact, every time. Thanks, Sam

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  • current location too slow for view

    - by Christian
    Hi, I make an App with a Map in the App and a button to change to the google.Map-App. The code for my position is: -(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { float avgAccuracy = (newLocation.verticalAccuracy + newLocation.horizontalAccuracy)/2.0; if (avgAccuracy < 500) { [locationManager stopUpdatingLocation]; locationManager.delegate = nil; } storedLocation = [newLocation coordinate]; The code for the view is: - (void)viewDidLoad { [super viewDidLoad]; UIImage *image = [UIImage imageNamed: @"LogoNavBar.png"]; UIImageView *imageview = [[UIImageView alloc] initWithImage: image]; UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithCustomView: imageview]; self.navigationItem.rightBarButtonItem = button; [imageview release]; [button release]; locationManager=[[CLLocationManager alloc] init]; locationManager.delegate = self; locationManager.desiredAccuracy = kCLLocationAccuracyBest; locationManager.distanceFilter = kCLDistanceFilterNone; [locationManager startUpdatingLocation]; mapView.showsUserLocation = YES; NSLog(@"storedLocation-latitude für MKregion: %f", storedLocation.latitude); MKCoordinateRegion region; region.center.latitude = (storedLocation.latitude + 45.58058)/2.0; region.center.longitude = (storedLocation.longitude - 0.546835)/2.0; region.span.latitudeDelta = ABS(storedLocation.latitude - 45.58058); region.span.longitudeDelta = ABS(storedLocation.longitude + 0.546835); [mapView setRegion:region animated:TRUE]; MKCoordinateRegion hotel; hotel.center.latitude = 45.58058; hotel.center.longitude = -0.546835; HotelPositionMarker* marker = [[HotelPositionMarker alloc] initWithCoordinate:hotel.center]; [mapView addAnnotation:marker]; [marker release]; } My problem: when the "viewDidLoad" start, the "storedLocation" is still 0.0000 it takes a bit longer to get the own position than to start the view. The Log for the "storedLocation" in the "viewDidLoad"-section is 0 while the Log of the "storedLocation" in the "-(IBAction)" when the map is visible contains the right values. How can I manage it to have my coordinates before the view load? I need them to center the view concerning the own position and the position given by me. MKCoordinateRegion region; region.center.latitude = (storedLocation.latitude + 45.58058)/2.0; region.center.longitude = (storedLocation.longitude - 0.546835)/2.0; region.span.latitudeDelta = ABS(storedLocation.latitude - 45.58058); region.span.longitudeDelta = ABS(storedLocation.longitude + 0.546835); [mapView setRegion:region animated:TRUE];

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  • Objective-C: Loop through NSDictionary to create seperate NSArray's

    - by Nic Hubbard
    I have a large NSDictionary structure that I need to loop through and create seperate NSArray's. Here is the structure: ( { id = { text = ""; }; sub = { text = " , "; }; text = ""; "thumb_url" = { text = ""; }; title = { text = "2010-2011"; }; type = { text = "title"; }; }, { id = { text = "76773"; }; sub = { text = "December 13, 2010"; }; text = ""; "thumb_url" = { text = "http://www.puc.edu/__data/assets/image/0004/76774/varieties/thumb.jpg"; }; title = { text = "College Days - Fall 2010"; }; type = { text = "gallery"; }; }, { id = { text = ""; }; sub = { text = ""; }; text = ""; "thumb_url" = { text = ""; }; title = { text = "2009-2010"; }; type = { text = "title"; }; }, { id = { text = "76302"; }; sub = { text = "December 3, 2010"; }; text = ""; "thumb_url" = { text = "http://www.puc.edu/__data/assets/image/0019/76303/varieties/thumb.jpg"; }; title = { text = "Christmas Colloquy"; }; type = { text = "gallery"; }; } ) Each section has a type key, which I need to check. When it finds the "title" key, I need to add those to an array. Then the next sections that would use the "gallery" key needs to be in its own array until it finds another "title" key. Then the "gallery" keys after that into their own array. I am using this a UITableView section titles and content. So, the NSDictionary above should have one NSArray *titles; array, and two other arrays each containing the galleries that came after the title. I have tried using a for loop but I just can't seem to get it right. And ideas would be appreciated.

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  • Is memory leak caused by global variables?

    - by user297535
    When I checked my application for memory leaks it is showing 12 leaks. What will be the effect of this? I used global variables as shown below #import "file1.m" int num; #import "file2.m" extern int num; num = 10; Can this cause memory leaks? Anyone please help. I am a beginner in programming.

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  • OPN Developer Services for Solaris Developers

    - by user13333379
    Independent Software Vendors (ISVs) who develop applications for Solaris 11 can exploit a number of interesting services as long as they are OPN Members with a Gold (or above) status and a Solaris Knowledge specialization: Free access to a Solaris development cloud with preconfigured Solaris developer zones through the apply for the: Oracle Exastack Remote Labs to get free access to Solaris development environments for SPARC and x86. Free access to patches and support information through MOS for Oracle Solaris, Oracle Solaris Studio, Oracle Solaris Cluster including updates for development systems  apply for the Oracle Solaris Development Initiative. Free email developer support for all questions around Oracle Solaris, Oracle Solaris Studio, Oracle Solaris Cluster and Oracle technologies integrating with Solaris 11 apply for the Solaris Adoption Technical Assistance.  

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  • NSOperation for animation loop causes strange scrolling behaviour

    - by Tricky
    Hi, I've created an animation loop which I run as an operation in order to keep the rest of my interface responsive. Whilst almost there, there is still one remaining issue. My UIScrollViews don't seem to be reliably picking up when a user touch ends. What this means is, for example, if a user drags down on a scroll view, when they lift their fingers the scrollview doesn't bounce back into place and the scrollbar remains visible. As if the finger hasn't left the screen. It takes another tap on the scrollview for it to snap to its correct position and the scrollbar to fade away... Here's the loop I created in a subclassed NSOperation: (void)main { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSRunLoop *runLoop = [NSRunLoop currentRunLoop]; _displayLink = [[CADisplayLink displayLinkWithTarget: self selector: @selector(animationLoop:)] retain]; [_displayLink setFrameInterval: 1.0f]; [_displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode: NSRunLoopCommonModes]; while (![self isCancelled]) { NSAutoreleasePool *loopPool = [[NSAutoreleasePool alloc] init]; [runLoop runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]]; [loopPool drain]; } [_displayLink invalidate]; [pool release]; } DOes anyone have any idea what might be going on here, and even better how to fix it... Thanks!

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  • Posting a jaiku using xcode

    - by frameworkguy
    NSMutableURLRequest *jaikuRequest=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://api.jaiku.com/json"] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0]; [jaikuRequest setHTTPMethod:@"POST"]; NSString *jbody= [NSString stringWithFormat:@"method=presence.send&user=XXusernameXX&personal_key=XXpersonalkeyXX&message=%@", encodedMsg]; [jaikuRequest setHTTPBody:[[NSString stringWithFormat:jbody] dataUsingEncoding:NSASCIIStringEncoding]]; I wrote the above code snippet to be able to post a jaiku on jaiku.com. I've come across similar samples in other languages for posting a jaiku. However i get the following response in the console: {"status": "error", "message": "Invalid API user", "code": 0} what could be the error or if im wrong, what is the correct approach to posting a jaiku using xcode?

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  • Custom view transition in OpenGL ES

    - by melfar
    I'm trying to create a custom transition, to serve as a replacement for a default transition you would get here, for example: [self.navigationController pushViewController:someController animated:YES]; I have prepared an OpenGL-based view that performs an effect on some static texture mapped to a plane (let's say it's a copy of the flip effect in Core Animation). What I don't know how to do is: grab current view content and make a texture out of it (I remember seeing a function that does just that, but can't find it) how to do the same for the view that is currently offscreen and is going to replace current view are there some APIs I can hook to in order to make my transition class as native as possible (make it a kind of Core Animation effect)? Any thoughts or links are greatly appreciated! UPDATE Jeffrey Forbes's answer works great as a solution to capture the content of a view. What I haven't figured out yet is how to capture the content of the view I want to transition to, which should be invisible until the transition is done. Also, which method should I use to present the OpenGL view? For demonstration purposes I used pushViewController. That affects the navbar, though, which I actually want to go one item back, with animation, check this vid for explanation: http://vimeo.com/4649397. Another option would be to go with presentViewController, but that shows fullscreen. Do you think maybe creating another window (or view?) could be useful?

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  • How to retrieve Directories size including all sub-directories?

    - by vikingosegundo
    I have stored images from the net like this Documents/imagecache/domain1/original/path/inURI/foo.png Documents/imagecache/domain2/original/path/inURI/bar.png Documents/imagecache/... Documents/imagecache/... Now I'd like to check the size of imagecache including all it sub-directories. Is there a convenient way of doing it — preferable without crawling through all the data manually?

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  • a full-screen UIImagePickerController with the right scale?

    - by Kay
    Hi, I'm customizing my image picker controller and I want to have a full-screen viewfinder. I think this might be pretty an old topic and I found an answer here: http://www.gorbster.net/blog/archives/144 But what I want to know is if there's a way to achieve this without distorting the scale of the image. If I scale that clipped preview image, I'm distorting its original x-y ratio, and I want to avoid it. Is there a way to prevent the preview image from being clipped so that I could retain the original 1200x1600 ratio? Thanks!

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  • ScrollView content async downloading problem

    - by Newbee
    Hi! I have UIScrollView with lots of UIImageView inside. In the loadView method I assign some temporary image for each of subview UIImageView images and starts several threads to async download images from internet. Each thread downloads and assign images as follows: NSData *data = [NSData dataWithContentsOfURL:URL]; UIImage *img = [UIImage imageWithData:data]; img_view.image = img; Here is the problem - I expects picture will changed after each image downloaded by I can see only temporary images until all images will downloads. UIScrollView still interact while images downloads - I can scroll temporary images inside it and see scrollers and nothing blocks run loop, but downloaded images doesn't updates.. What I tried to do: Call sleep() in the download thread -- not helps. Call setNeedsDisplay for each ImageView inside ScrollView and for ScrollView -- not helps. What's wrong ? Thanks. Update. I tried some experiments with number of threads and number of images to download. Now I'm sure -- images redraws only when thread finished. For example - if I load 100 images with one thread -- picture updates one time after all images downloads. If I increase number of threads to 10 -- picture updates 10 times -- 10 images appears per update. One more update. I fixed problem by staring new thread from the downloading threads each time one image downloaded and exit current thread (instead of download several images in one thread in the cycle and exit thread only when all downloaded). Obviously it's not a good solution and there must be right approach.

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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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  • 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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  • Load XML file on seperate thread, overwrite old , and save.

    - by Luis Tovar
    Hey everyone... so Im trying to figure out how to do this. I have bounced around alot of forums to try and find my answer, but no success. Either their process it too complicated for me to understand, or is just overkill. What I am trying to do is this. I have an XML file within my app. Its a 500k xml file that i dont want the user to have to wait on when loading. SO... I put it in my app which kills the load time, and makes the app available offline. What i want to do is, when the app loads, in the background (seperate thread) download the SAME xml file which MIGHT be updated with new data. Once the xml file is complete, i want to REPLACE the xml file that was used to load the file. Any suggestions or code hints would be greatly appreciated. Thanks in advance!

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  • svn vs git for the sole developer? [closed]

    - by nattyP
    If I am sole developer (I do not work in a team) working from my laptop (Windows OS and Linux VM) and backing up data to the cloud (Dropbox etc), then is git still better than svn for my version control needs? I was thinking not since I wont need any of git's distributed features. But is git such a better approach to version control that I should consider moving anyway? With so many articles saying how people are moving from svn to git? I was wondering, if they are talking about large or open projects with teams of developers vs the sole developer. What do you think?

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  • How to draw a drop shadow AND gradient with quartz2d?

    - by Luke
    Hello! I've a custom shape drawing using coregraphics and i want to add a drop shadow and a gradient to it also. I've been trying and searching a lot of informations on how to combine and do this, but i can't get it to work. I'm able to draw only one either. Anyone doing this already or know how to do this? Thank you.

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