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• Cannot run code on device

  - by lostInTransit

  Hi I have some source code which I had developed and later gave to another team. They signed it with their certificate and provisioning profile. Now I have the code back and have set the appropriate values in the project properties for code signing identity (with my cert and profile). But when I run the application on a device, I get an error showing the other team's certificate and prompting that the provisioning profile does not exist. I don't know where it is being referenced. Can someone please help. Thanks.

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• How to add a cell to a UITableView?

  - by Sheehan Alam

  I want to be able to add 1 cell to the top of a UITableView after the user clicks on a button. How can I achieve this?

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• NSOperation and UIKit problem

  - by Infinity

  Hello guys! I am doing my download with an object which was inherited from NSOperation. I have read the documentation and when my operation finished I must call the [self.delegate performSelectorOnMainThread:@selector(operationDidFinish:) withObject:self waitUntilDone:YES]; method. It needs to be called on the main thread, because the UIKit is not thread safe and the documentation says this in these non thread safe frameworks cases. In the delegate method I am drawing a pdf or an image, but because it is drawn on the main thread the User Interface is very laggy until the drawing is finished. Maybe can you suggest me a good way to avoid this problem?

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• iPhone autorotation for too many objects on screen

  - by Denis

  Hi! I have a BlahAppDelegate, BlahViewController and no nibs in my iPhone app project. Only some subclasses of UIView in addition. All this is situated in main.m. My app has 6 subclassed UIViews. Each of it contains 18 UIImageViews. I need to get autorotating work. Or custom rotating. Or something. For example it would be nice to fade the screen out when device is rotated, then move/resize views and then fade screen out. But I don't know how to automate it, without writing a resizing code for each of objects. Please help me if you can.

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• Scrollview animation in different ways?

  - by senthilmuthu

  Hi, If you see the URL in TRY ME simulator select cardex tab,if u scroll vertically on simulator(flash),the no of uiviews are coming,if u touch anything, it will be shown,any idea to do this ,have they used OPENGL? please any help?

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• UITableView resizing rows problem

  - by Vin

  Hi All, Hope to get solution to this problem. I have been stuck on it since a long time now. I have a a tableView which has custom labels drawn upon the cell using CGRect. I receive the data from a web service in arrays. Initially i display a line of data on the cells. When the user selects a cell, I call reloadsRowAtIndexPath to increase the height of selected row. In the process, cellForRowAtIndexPath gets called again. I keep track of this by a flag, and when cellForRowAtIndexPath gets called again, I display the two more lines of data from arrays, on the cell. What i am getting is all overlapping data on one other. I tried to remove already placed labels in didSelectRowAtIndexPath, but to no avail. Please help me on this Thanks in advance.

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• Converting NSMutableData to NSString Problem

  - by Sheehan Alam

  initWithData does not convert my data object into a string properly. When I check the length of the data object, it has a value. NSMutableData* receivedData =[[NSMutableData data] retain]; NSString* json_string = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding]; Am I doing something wrong creating the string?

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• iPhone offline reading

  - by Andy

  Hi, first of all - I am quite new to iPhone App development (3 months). I am working for a software company that offers a content management system. Our customers are for the main part publishing houses for magazines. They use our software to write articles to their homepages. Now we want to offer iPhone Applications to go with our cms. What I have accomplished so far is an RSS reader that shows newly published articles in a list view. The user selects one article and is redirected to a specially formatted detail view of this article. The next step is to add offline reading capabilities. I have searched the internet up and down but couldn't find anything like a best practice for that. I get it that there are two possibilities in general: Store the contents of the uiwebview locally on the iPhone/iPad (including css, images, js and so on). There would be the need to rework the basic html to use the downloaded css, images and js. Also I would have to somehow edit hyperlinks to following pages in multipage articles - Sounds like a lot of work ;) Create a PDF on the server side and download that to the mobile device. Rework the RSS Source to point to the locally saved pdf instead of the website on the server. My question is - what is the better way to go? Are there any downsides for either of the possibilities? Are there other (simple ;)) ways to implement offline reading features? Are there possibly any howto's that I could've missed? Thanks y'all!

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• Newbie Android question

  - by DanyW

  Hi folks, I have just started with Android with the usual Hello World project template in Eclipse. I modified the layout XML and removed the label that says "Hello World, !", and added a couple of other controls. However, these are not reflected in the app, within the emulator. When I run this app from Eclipse again it is still showing the Hello World label! I'm sure it's something terribly simple that I have completely missed. Can someone please point me in the right direction? Many thanks, Dany.

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• how to build an web app in iphone using objective c

  - by Rakesh kumar

  how to build an web app in iphone using objective c.

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• Alert a user to rate an application from iTunes

  - by thndrkiss

  Hi, I am new to iPhone. I heard from few people that it is possible to show a alert to user @ iTunes (mobile and iTunes desktop) and get a rating of the application. Is this true and possible ?

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• Mapkit: Only show annotations in current view

  - by Nic Hubbard

  Instead of loading all annotations that are in my array, I would only like to load the annotations that the user could currently see cased on how far they are zoomed in on the map. So, if the user pans to a place where there are annotations, those would be added, and if they pan away, those would be removed. I assume this would help with memory. Does anyone know how to do something like this? And, is it worth it, or needed?

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• Load PDF into layer offscreen

  - by Eric

  Is there a way to load a PDF into a CALayer (or CATiledLayer) offscreen and then just display it when required?

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• UIImage Shadow Trouble

  - by Brandon Schlenker

  I'm trying to add a small shadow to an image, much like the icon shadows in the App Store. Right now I'm using the following code to round the corners of my images. Does anyone know how I can adapt it to add a small shadow? - (UIImage *)roundCornersOfImage:(UIImage *)source height:(int)height width:(int)width { int w = width; int h = height; CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); CGContextRef imageContext = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst); CGContextBeginPath(imageContext); CGRect rect = CGRectMake(0, 0, w, h); addRoundedRectToPath(imageContext, rect, 10, 10); CGContextClosePath(imageContext); CGContextClip(imageContext); CGContextDrawImage(imageContext, CGRectMake(0, 0, w, h), source.CGImage); CGImageRef imageMasked = CGBitmapContextCreateImage(imageContext); CGContextRelease(imageContext); CGColorSpaceRelease(colorSpace); return [UIImage imageWithCGImage:imageMasked]; } "addRoundedRectToPath" refers to another method that obviously rounds the corners.

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• Android Color Picker

  - by GuyNoir

  Does anyone know of a quick color picker widget that I could grab to use in my application? I've seen one in a few different applications that has a wheel with colors, and that you tap in the center to select, but I'm not sure where to find it. Google brings up nothing. Any color picker would be fine though. Thanks.

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• scroll image using UIscrollview

  - by summer

  i looked at the example from the iphone dev: http://developer.apple.com/iphone/library/samplecode/Scrolling/index.html everything looks cool except that for 5 image they set the "const NSUInteger kNumImages = 5;" what happens is that what if i have 1000 images?and i wan to view it without having to change the number everytime?also if i will to set the number to 1000 and i have only 10 images then in the simulator the user can scroll "blank view" till it reaches count 1000! help please..thanks

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• iPhone: Get indexPath of Predicate Object

  - by Nic Hubbard

  I am using a predicate to find an object in core data. I can successfully find the object that I want, but I need to also get the indexPath of that object, so that I can push a details view in for that object. Currently I have the following code for getting my object: NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; [fetchRequest setEntity:[NSEntityDescription entityForName:@"Ride" inManagedObjectContext:self.managedObjectContext]]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"title = %@ AND addressFull = %@", view.annotation.title, view.annotation.subtitle]; [fetchRequest setPredicate:predicate]; NSMutableArray *sortDescriptors = [NSMutableArray array]; [sortDescriptors addObject:[[[NSSortDescriptor alloc] initWithKey:@"title" ascending:YES] autorelease]]; [sortDescriptors addObject:[[[NSSortDescriptor alloc] initWithKey:@"addressFull" ascending:YES] autorelease]]; [fetchRequest setSortDescriptors:sortDescriptors]; [fetchRequest setReturnsObjectsAsFaults:NO]; [fetchRequest setPropertiesToFetch:[NSArray arrayWithObjects:@"title", @"addressFull", nil]]; NSError *error = nil; NSArray *fetchedItems = [self.managedObjectContext executeFetchRequest:fetchRequest error:&error]; // Sohow what record we returned NSLog(@"%@",[fetchedItems objectAtIndex:0]); So, I can correctly get my object into an array. But how do I translate that object into an indexPath?

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• Using regexkitlite with strings containing % signs

  - by David Liu

  So I'm using RegexKitLite in my iPhone app, and I'm basically grabbing out a bunch of URLs and names from within a web page. The problem is that whenever it comes across a URL with URL encoded characters like %22 for a double quote or %27 for a single quote, the captured string basically gives me a jumbled overflowed string, containing garbage and even method names. I'm really not doing anything particularly special within the regex, just your basic "startdelimiter(.*)enddelimiter" regex.

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• Is there a Queue/FIFO data structure for the iPhone?

  - by Caffeine Coma

  Before I roll my own Queue using NSMutableArray, I'd like to know if there is something more standard available. I don't see anything in the Apple docs, but I'll be surprised if there is not a Queue implementation from somewhere that folks are using. Java spoils me!

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• Adding a UIBarButtonItem to a programattically allocated UINavigationBar

  - by iamdadude

  I have a cameraoverlayview that allocates a UINavigationBar to the top of the screen like this - CGRect navbarFrame = CGRectMake(0, 0, 320, 44); navigationBar = [[UINavigationBar alloc] initWithFrame:navbarFrame]; navigationBar.delegate = self; Now I want to add a UIBarButtonItem as the left button to the navigation bar, but the standard navigationbar.leftitem doesn't work. So I tried doing this - closebutton = [[UIBarButtonItem alloc] initWithTitle:closebuttontext style:UIBarButtonItemStylePlain target:self action:@selector(close)]; navigationBar.topItem.leftBarButtonItem = closebutton; But it doesn't work either. Can anyone point me in the right direction? As far as the navigation bar loading up correctly in the cameraoverlayview, it works 100%.

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• Image "moves" when varying heightForRowAtIndexPath in UITableViewCell.

  - by Kalle

  I have a table view with varying height, as defined in the heightForRowAtIndexPath. For some very odd reason, the image is "indented" to the right based on the height; if the height is low enough, the image is stuck to the left side of the cell, but as the height increases, the image for said cell is shifted rightward compared to other rows. The result of this is a very poor looking list, with images floppily laid out in a zig-zag pattern depending on the height of each individual row. The problem is revealed by this simple example: - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return (indexPath.row+1) * 50; } Each cell is set up (simplified) as a "Subtitle" style cell with: // ... cell.textLabel.text = @"foo"; cell.detailTextLabel.text = @"bar"; cell.imageView.backgroundColor = [UIColor redColor]; // for debugging; i have images with transparent bg cell.imageView.image = anImageThatIs55x50pixelsBig; return cell; Any ideas? My head bleeds from the wall-love-affair. Edit: uploaded a screen which displays this. The "image" is just a screenshot of a tiny area of the screen which makes it look a little weird, but you get the picture I'm sure: http://img28.imageshack.us/img28/549/screenshot20100311at172.png

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• TTNavigator three20 openURLAction

  - by disp

  I'm new to three20 and trying to find my way through the TTNavigator class. I try to push to a new view via the URL system. So I used openURL: animated: method which works just fine, but it's deprecated, and I know that I should use openURLAction instead, but this has no animated: parameter. Am I missing something?

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• Handling empty UITableView in UITableViewController

  - by Travis

  I have a UITableViewController that is populated with some data. If the data comes back empty, obviously the table is empty. What is the appropriate method to use to handle this case and put up something like a UILabel with "No Data Available". I have been using - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section but it's proven a bit cumbersome and I'm not longer confident it's the best place to do this.

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• CGPath and Quartz 2D

  - by iphonedevnoob

  I want to create a triangle using Quartz 2D functions. The 3 edges of the triangle should be in different colors. I am able to create the triangle but not able to set the color of each edge or subpath separately. Any suggestions or sample code are much appreciated.

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• AVAudioRecorder Won't Record On Device

  - by Dyldo42

  This is my method: -(void) playOrRecord:(UIButton *)sender { if (playBool == YES) { NSError *error = nil; NSString *filePath = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat: @"%d", [sender tag]] ofType:@"caf"]; NSURL *fileUrl = [NSURL fileURLWithPath:filePath]; AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:fileUrl error:&error]; [player setNumberOfLoops:0]; [player play]; } else if (playBool == NO) { if ([recorder isRecording]) { [recorder stop]; [nowRecording setImage:[UIImage imageNamed:@"NormalNormal.png"] forState:UIControlStateNormal]; [nowRecording setImage:[UIImage imageNamed:@"NormalSelected.png"] forState:UIControlStateSelected]; } if (nowRecording == sender) { nowRecording = nil; return; } nowRecording = sender; NSError *error = nil; NSString *filePath = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat: @"%d", [sender tag]] ofType:@"caf"]; NSURL *fileUrl = [NSURL fileURLWithPath:filePath]; [sender setImage:[UIImage imageNamed:@"RecordingNormal.png"] forState:UIControlStateNormal]; [sender setImage:[UIImage imageNamed:@"RecordingSelected.png"] forState:UIControlStateSelected]; recorder = [[AVAudioRecorder alloc] initWithURL:fileUrl settings:recordSettings error:&error]; [recorder record]; } } Most of it is self explanatory; playBool is a BOOL that is YES when it is in play mode. Everything works in the simulator however, when I run it on a device, [recorder record] returns NO. Does anyone have a clue as to why this is happening?

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