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• using Quick Sequence Diagram Editor for sequence diagrams

  - by Jason S

  Anyone have experience with Quick Sequence Diagram Editor? The combination of instant display + text source code + Java implementation is very attractive to me, but I can't quite figure out how to make the syntax do what I want, and the documentation's not very clear. Here's a contrived example: al:Actor bill:Actor atm:ATM[a] bank:Bank[a] al:atm.give me $10 atm:al has $3=bank.check al's account balance al:atm.what time is it atm:al.it's now atm:al.stop bugging me atm:al.you only have $3 atm:bill.and don't you open your mouth bill:atm.who asked you? bill:atm.give me $20 al:atm.hey, I'm not finished! atm:bill has $765=bank.check bill's account balance atm:yes I'm sure, bill has $765=bank.hmm are you sure? atm:bill.here's $20, now go away atm:great, he's a cool dude=bank.I just gave Bill $20 al:atm.what about my $10? atm:al.read my lips: you only have $3 Here's the result from QSDE in single-threaded mode: and in multi-threaded mode: I guess I'm not clear what starts/ends those vertical bars. I have a situation which is single-threaded, but there's state involved, and all the messages are asynchronous. I guess that means I should use an external object to represent that state and its lifetime. What I want is for one timeline to represent the message sequence al:atm.give me $10 atm:bank.check al's account balance bank:atm.al has $3 atm:al.you only have $3 and another timeline to represent the message sequence bill:atm.give me $20 atm:bank.check bill's account balance bank:atm.bill has $765 atm:bank.hmm are you sure? bank:atm.yes I'm sure, bill has $765 atm:bill.here's $20, now go away atm:bank.I just gave Bill $20 bank:atm.great, he's a cool dude with the other "wisecracks" representing other miscellaneous messages that I don't care about right now. Is there a way to do this with QSDE?

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• Wix - Upgrade always runs older installer msi and fails in trying to read old msi

  - by rkhj

  I'm having a problem though with the Windows caching of the installer. I'm trying to do an upgrade and each time the Windows installer is launching the installer of the older version. And when I do the upgrade it is complaining about problems with reading the older version's msi file (because its not in the same directory anymore). I did change the UpgradeCode and the ProductCode but kept the PackageCode the same. I also have different ProductVersion codes (2.2.3 vs 2.3.0). Here's a sample of my code: <Upgrade Id="$(var.UpgradeCode)"> <UpgradeVersion Property="OLDAPPFOUND" IncludeMinimum="yes" Minimum="$(var.RTMProductVersion)" IncludeMaximum="no" Maximum="$(var.ProductVersion)"/> <UpgradeVersion Property="NEWAPPFOUND" IncludeMinimum="no" Minimum="$(var.ProductVersion)" OnlyDetect="yes"/> </Upgrade> This is the Install Sequence: <InstallExecuteSequence> <Custom Action='SetUpgradeParams' After='InstallFiles'>Installed AND NEWAPPFOUND</Custom> <Custom Action='Upgrade' After='SetUpgradeParams'>Installed AND NEWAPPFOUND</Custom> </InstallExecuteSequence> The error I am getting is: A network error occurred while attempting to read from the file: Thanks,

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• UIImagePickerController dismissModalViewController

  - by Deepak Sharma

  I am trying to invoke UIImagePickerController to select a movie on iPhone 3GS and when the movie is selected, i just dismiss it and present MyViewController modally with a configured delay of 1.0 seconds. What I notice is 10% of the times, presentModalViewController on MyViewController does nothing whereas it works 90% of the times. I want to understand why is this behavior and what is the remedy. Here is the sample code: (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { NSURL *videoURL = nil; NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType]; if ([mediaType isEqualToString:@"public.movie"]) { videoURL = [info objectForKey:UIImagePickerControllerMediaURL]; } picker.delegate = nil; [[picker parentViewController] dismissModalViewControllerAnimated:YES]; [self performSelector:@selector(launchMyViewController:) withObject:nil afterDelay:1.0]; } -(void) launchMyViewController:(id) obj { MyViewController *myCtrl = [[MyViewController alloc] initWithNibName:@"MyViewController" bundle:[NSBundle mainBundle] controller:self]; [self presentModalViewController:myCtrl animated:YES]; [myCtrl release]; NSLog(NSStringFromClass([self.modalViewController class])); [path release]; } I have put NSLog statement to print the self.modalViewController class name and what I notice is that 10% of the times when myCtrl is not fired modally, the self.modalViewController.class is UIImagePickerController. Otherwise, the self.modalViewController.class is MyViewController. I want to know why is the behavior so unpredictable and what is the workaround or other way to achieve the same thing I intend.

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• VISUAL STUDIO 2008 SETUP PROJECT MSI BUILD with Bootstrapping for quite installation

  - by rajadiga

  I build Visual Studio 2008 setup Project with MSI build it depends on .NET 3.5. I added Prerequisites like: .NET 3.5, Microsoft office interoperability, VS tools for office System 3.0 Run time, .etc. After that Selected "Download Prerequisite from Same location as my application" in Specify install location for Prerequisite. Build the setup. I can find mysetup.msi in Release directory. In new Machine I started fresh installation of my application... While Clicking the mySetup.msi. Dialog shows like this " This Setup Requires .NET framework 3.5 , Please install .NET setup then run this setup, .NET Framework can be obtained from web Do you want to do that now?" it gives "yes" no option - if I press YES it goes microsoft website. How can avoid it ? I wanted setup take .NET Framework to be installed from same location where I put all setup files including mysetup.msi ? In case of Quite installation cmd /c "msiexec /package mysetup.msi /quiet /log install.log" ..in log I can see only half way through installtion then error Property(S): HideFatalErrorForm = TRUE MSI (s) (D0:24) [00:07:08:015]: Product: my product-- Installation failed. === Logging stopped: 3/23/2010 0:07:08 === so how can complete the installation without user intervention and without error using VS2008 setup project thanks for all the help in advance for any input.

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• ASP.net access controls dynamically

  - by c11ada

  hey all, i have a table which looks similar to this <asp:TableRow><asp:TableCell>Question 1</asp:TableCell><asp:TableCell ID ="Question1Text"></asp:TableCell></asp:TableRow> <asp:TableRow><asp:TableCell ColumnSpan="2"> <asp:RadioButtonList ID="RadioButtonList1" runat="server"><asp:ListItem>Yes</asp:ListItem><asp:ListItem>No</asp:ListItem> </asp:RadioButtonList> </asp:TableCell></asp:TableRow> <asp:TableRow><asp:TableCell> <asp:TextBox ID="TextBox1" TextMode="MultiLine" runat="server"></asp:TextBox></asp:TableCell></asp:TableRow> <asp:TableRow><asp:TableCell>Question 2</asp:TableCell><asp:TableCell ID ="Question2Text"></asp:TableCell></asp:TableRow> <asp:TableRow><asp:TableCell ColumnSpan="2"> <asp:RadioButtonList ID="RadioButtonList2" runat="server"><asp:ListItem>Yes</asp:ListItem><asp:ListItem>No</asp:ListItem> </asp:RadioButtonList> </asp:TableCell></asp:TableRow> <asp:TableRow><asp:TableCell> <asp:TextBox ID="TextBox2" TextMode="MultiLine" runat="server"></asp:TextBox></asp:TableCell></asp:TableRow> i want to be able to systematically acces table cells with ID's for example for (int i = 1; i<3 ; i++) { // i want to be able to access the table cell with the ID Question1Text then Question2Text and so on } is this even possible ??

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• NSFileManager works fine on simulator but not on device

  - by Jenicek

  Hi, I have problem creating directories and files with NSFileManager on the iPhone device. My code, shown below, works fine on the simulator, but not on the device, could you please help me? Gimme some directions where the problem may be, thanks for every reply.. I'm first creating directories this way: NSFileManager *fileMgr = [NSFileManager defaultManager]; NSArray *arPaths = NSSearchPathForDirectoriesInDomains(NSDownloadsDirectory, NSUserDomainMask, YES); NSString *appPath = [[NSString alloc] init]; appPath = [arPaths objectAtIndex:0]; strDownloadsDir = [[NSString alloc] init]; strDownloadsDir = [[appPath stringByAppendingPathComponent:@"/Other"] copy]; if(![fileMgr fileExistsAtPath:strDownloadsDir]) [fileMgr createDirectoryAtPath:strDownloadsDir attributes:nil]; and then I'm trying to create new file in this directory this way: NSString *filePath = [strDownloadsDir stringByAppendingPathComponent:strDlFileName]; //Test whether this file exists, if not, create it NSLog(@"%@", filePath); if(![fileMgr fileExistsAtPath:filePath]) { if([fileMgr createFileAtPath:filePath contents:nil attributes:nil]) NSLog(@"Creating new file at path %@", filePath); else NSLog(@"Failed to create new file."); } It seems that there's something wrong with whole NSFileManager, because when I'm using fileExistAtPath with a path given by this NSArray *arPaths = NSSearchPathForDirectoriesInDomains(NSDownloadsDirectory, NSUserDomainMask, YES); NSString *appPath = [[NSString alloc] init]; appPath = [arPaths objectAtIndex:0]; it is not working too, I tried to change directory to NSDocumentsDirectory but it did not help

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• How do you clean Core Data generated models and code from a project?

  - by Hazmit

  I'm having an extremely annoying problem with Core Data in the iPhone SDK. I would say in general Core Data for the most part appears easy to use and nice to implement. I have a sqlite database that is being used as a read only reference to pull data elements out for an iPhone app. It would seem there are really mysterious issues relating to what seems to be migration of the database to the most recent versions of my schema. Why can't you just clean out your stored objects and models and let a project redo all of it when you compile next? You would think if you setup a stored object model there would be a way to just reset it and recompile. I've tried what feels like a thousand 'tips' that have been the results of hours of google searches and documentation prowling to figure out how to do this. My most recent error during compile time is below. 2010-04-07 18:23:51.891 PE[1962:207] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't merge models with two different entities named 'PElement'' All of this code has been working in the simulator and is only causing me troubles now because I made a change to the schema. I also have the database options for automatically migrating set as below. NSMutableDictionary *optionsDictionary = [NSMutableDictionary dictionary]; [optionsDictionary setObject:[NSNumber numberWithBool:YES] forKey:NSMigratePersistentStoresAutomaticallyOption]; [optionsDictionary setObject:[NSNumber numberWithBool:YES] forKey:NSInferMappingModelAutomaticallyOption];

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• UISearchBar delegate not called when used as UINavigationBar titleVIew?

  - by phooze

  I have a UITableViewController that I have specified as a UISearchBarDelegate. Up until now, I had programmatically added the UISearchBar to the headerView of the table, and there were no problems. I began to run out of screen real estate, so I decided to kill my normal UINavigationController title (which was text), and added the following code, moving my SearchBar from the table to the UINavigationBar: // (Called in viewDidLoad) // Programmatically make UISearchBar UISearchBar *tmpSearchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0,0,320,45)]; tmpSearchBar.delegate = self; tmpSearchBar.showsCancelButton = YES; tmpSearchBar.autocorrectionType = UITextAutocorrectionTypeNo; tmpSearchBar.autocapitalizationType = UITextAutocapitalizationTypeNone; [self set_searchBar:tmpSearchBar]; [tmpSearchBar release]; self.navigationItem.titleView = [self _searchBar]; This code works as expected - my UINavigationBar is now a UISearchBar. However, my delegate method: /** Only show the cancel button when the keyboard is displayed */ - (void) searchBarDidBeginEditing:(UISearchBar*) lclSearchBar { lclSearchBar.showsCancelButton = YES; } ...is no longer being called. I've breakpointed, and I've confirmed that the UISearchBar's delegate is indeed self, the view controller. Oddly, this delegate method is still called just fine: /** Run the search and resign the keyboard */ - (void) searchBarSearchButtonClicked:(UISearchBar *)lclSearchBar { _deepSearchRan = NO; [self runSearchForString:[[self _searchBar] text] isSlowSearch:NO]; [lclSearchBar resignFirstResponder]; } Any ideas why UINavigationBar is swallowing my delegate calls?? What am I missing?

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• iPhone SDK: Rendering a CGLayer into an image object

  - by codemercenary

  Hi all, I am trying to add a curved border around an image downloaded and to be displayed in a UITableViewCell. In the large view (ie one image on the screen) I have the following: productImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:product.image]]; [productImageView setAlpha:0.4]; productImageView.frame = CGRectMake(10.0, 30.0, 128.0, 128.0); CALayer *roundedlayer = [productImageView layer]; [roundedlayer setMasksToBounds:YES]; [roundedlayer setCornerRadius:7.0]; [roundedlayer setBorderWidth:2.0]; [roundedlayer setBorderColor:[[UIColor darkGrayColor] CGColor]]; [self addSubview:productImageView]; In the table view cell, to get it to scroll fast, an image needs to be drawn in the drawRect method of a UIView which is then added to a custom cell. so in drawRect - (void)drawRect:(CGRect)rect { ... point = CGPointMake(boundsX + LEFT_COLUMN_OFFSET, UPPER_ROW_TOP); //CALayer *roundedlayer = [productImageView layer]; //[roundedlayer setMasksToBounds:YES]; //[roundedlayer setCornerRadius:7.0]; //[roundedlayer setBorderWidth:2.0]; //[roundedlayer setBorderColor:[[UIColor darkGrayColor] CGColor]]; //[productImageView drawRect:CGRectMake(boundsX + LEFT_COLUMN_OFFSET, UPPER_ROW_TOP, IMAGE_WIDTH, IMAGE_HEIGHT)]; // [productImageView.image drawInRect:CGRectMake(boundsX + LEFT_COLUMN_OFFSET, UPPER_ROW_TOP, IMAGE_WIDTH, IMAGE_HEIGHT)]; So this works well, but if I remove the comment and try to show the rounded CA layer the scrolling goes really slow. To fix this I suppose I would have to render this image context into a different image object, and store this in an array, then set this image as something like: productImageView.image = (UIImage*)[imageArray objectAtIndex:indexPath.row]; My question is "How do I render this layer into an image?" TIA.

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• UIImagePickerController Save to Disk then Load to UIImageView

  - by Harley Gagrow

  Hi, I have a UIImagePickerController that saves the image to disk as a png. When I try to load the PNG and set a UIImageView's imageView.image to the file, it is not displaying. Here is my code: (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage]; NSData *imageData = UIImagePNGRepresentation(image); // Create a file name for the image NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setTimeStyle:NSDateFormatterShortStyle]; [dateFormatter setDateStyle:NSDateFormatterShortStyle]; NSString *imageName = [NSString stringWithFormat:@"photo-%@.png", [dateFormatter stringFromDate:[NSDate date]]]; [dateFormatter release]; // Find the path to the documents directory NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; // Now we get the full path to the file NSString *fullPathToFile = [documentsDirectory stringByAppendingPathComponent:imageName]; // Write out the data. [imageData writeToFile:fullPathToFile atomically:NO]; // Set the managedObject's imageLocation attribute and save the managed object context [self.managedObject setValue:fullPathToFile forKey:@"imageLocation"]; NSError *error = nil; [[self.managedObject managedObjectContext] save:&error]; [self dismissModalViewControllerAnimated:YES]; } Then here is how I try to load it: self.imageView.backgroundColor = [UIColor lightGrayColor]; self.imageView.frame = CGRectMake(10, 10, 72, 72); if ([self.managedObject valueForKey:@"imageLocation"] != nil) { NSLog(@"Trying to load the imageView with: %@", [self.managedObject valueForKey:@"imageLocation"]); UIImage *image = [[UIImage alloc] initWithContentsOfFile:[self.managedObject valueForKey:@"imageLocation"]]; self.imageView.image = image; } else { self.imageView.image = [UIImage imageNamed:@"no_picture_taken.png"]; } I get the message that it's trying to load the imageView in the debugger, but the image is never displayed in the imageView. Can anyone tell me what I've got wrong here? Thanks a bunch.

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• CGImageCreateWithMask with an image as a mask

  - by Peyman

  Hi I am trying to use an image (painted as Core Graphics) to create a mask. What I am doing is this 1. creating a Core Graphics path CGContextSaveGState(context); CGContextBeginPath(context); CGContextMoveToPoint(context,circleCenter.x,circleCenter.y); //CGContextSetAllowsAntialiasing(myBitmapContext, YES); CGContextAddArc(context,circleCenter.x, circleCenter.y,circleRadius,startingAngle, endingAngle, 0); // 0 is counterclockwise CGContextClosePath(context); CGContextSetRGBStrokeColor(context,1.0,0.0,0.0,1.0); CGContextSetRGBFillColor(context,1.0,0.0,0.0,0.2); CGContextDrawPath(context, kCGPathFillStroke); 2. then I'm saving the context that has the path just painted CGImageRef pacmanImage = CGBitmapContextCreateImage (context); 3. restoring the context CGContextRestoreGState(context); CGContextSaveGState(context); 4. creating a 1 bit mask (which will provide the black-white mask) bitsPerComponent = 1; bitsPerPixel = bitsPerComponent * 1 ; bytesPerRow = (CGImageGetWidth(imgToMaskRef) * bitsPerPixel); mask = CGImageCreate(CGImageGetWidth(imgToMaskRef), CGImageGetHeight(imgToMaskRef), bitsPerComponent, bitsPerPixel, bytesPerRow, greyColorSpace, kCGImageAlphaNone, CGImageGetDataProvider(pacmanImage), NULL, //decode YES, //shouldInterpolate kCGRenderingIntentDefault); 5. masking the imgToMaskRef (which is a CGImageRef imgToMaskRef =imgToMask.CGImage;) with the mask just created imageMaskedWithImage = CGImageCreateWithMask(imgToMaskRef, mask); CGContextDrawImage(context,imgRectBox, imageMaskedWithImage); CGImageRef maskedImageFinal = CGBitmapContextCreateImage (context); returning the maskedImageFinal to the caller of this method (as wheelChoiceMadeState, which is a CGImageRef) who then updates the CALayer contents property with the image theLayer.contents = (id) wheelChoiceMadeState; the problem I am seeing is that the mask does not work properly and looks very strange indeed. I get strange patterns across the path painted by the Core Graphics. My hunch is there is something with CGImageGetDataProvider() but I am not sure. Any help would be appreciated thank you

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• Dismissing iPad UIPopoverController from within it's content controller

  - by joshholat

  So I have a popover with a button in it. When that button is pushed, I want the popover to go away. It seems easy enough, but I can't figure it out for the life of me. The code I use to show the popover is below: AddCategoryViewController* content = [[AddCategoryViewController alloc] init]; UIPopoverController* aPopover = [[UIPopoverController alloc] initWithContentViewController:content]; aPopover.delegate = self; [content release]; // Store the popover in a custom property for later use. self.addCategoryPopover = aPopover; [aPopover release]; [addCategoryPopover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES]; Within the addcategoryviewcontroller, I have: -(IBAction)saveAddCategory:(id)sender { if (rootViewController == nil) rootViewController = [[RootViewController alloc] init]; [rootViewController.addCategoryPopover dismissPopoverAnimated:YES]; [rootViewController dismissPopover]; } Rootviewcontroller is where the popover is being created from. Unfortunately, neither of those methods work to dismiss it. any help?

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• Custom UITableViewCell won't redraw on setNeedsDisplay

  - by Andrew Portner

  I created a custom UITableViewCell class with a UIButton, a UIImage, and two UILabels. The button and the image are overlayed on top of each other, and only one is displayed at a time. The expected behavior is you touch on the button, the button disappears, and it displays the image. The UITableViewCells are set to be reused. Here's my code: Constructor: - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier { if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) { unheartButton = [[UIButton buttonWithType:UIButtonTypeCustom] retain]; unheartButton.backgroundColor = [UIColor clearColor]; unheartButton.frame = CGRectMake(10, 13, 20, 18); [unheartButton addTarget:self action:@selector(onButtonClick:) forControlEvents:UIControlEventTouchUpInside]; [unheartButton setBackgroundImage:[UIImage imageNamed:@"redheart.png"] forState:UIControlStateNormal]; imageView = [[UIImageView alloc] init]; imageView.frame = CGRectMake(12, 13, 16, 16); NSMutableArray *array = [[NSMutableArray alloc] init]; for (int ndx = 1; ndx < 13; ndx++) { [array addObject:[UIImage imageNamed:[NSString stringWithFormat:@"icon-loading-%d (dragged).tiff", ndx]]]; } imageView.animationImages = array; imageView.animationDuration = 1; imageView.hidden = YES; [array release]; [self.contentView addSubview:imageView]; [self.contentView addSubview:unheartButton]; return self; } } Button click: - (IBAction) onButtonClick: (id) sender { unheartButton.hidden = YES; imageView.hidden = NO; [imageView startAnimating]; [self setNeedsDisplay]; [self.contentView setNeedsDisplay]; [self.unheartButton setNeedsDisplay]; [self.imageView setNeedsDisplay]; } I'm calling setNeedsDisplay on everything, but nothing seems to happen. If I scroll off the screen and back up, the button is hidden and now the loading icon is shown, but this only happens after a scroll. I'm not sure what I need to do to get the cell to repaint.

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• How can I use removeFromSuperView and dismissModalViewControllerAnimated at same time ?

  - by srikanth rongali

  I have a UIViewController *view1 and another UIViewController *view2; I used presentModelViewController to navigate from view1 to view2. -(void)function:(id)sender { NSLog(@"The libraryFunction entered"); LibraryController *libraryController = [[LibraryController alloc]init]; [self presentModalViewController:libraryController animated:YES]; } I have another view UITableViewController *tableView; I added it to view2 as a subView. -(void)viewDidLoad { RootViewController *rootViewController = [[RootViewController alloc] initWithStyle:UITableViewStylePlain]; UINavigationController *aNavigationController = [[UINavigationController alloc] initWithRootViewController:rootViewController]; self.navController = aNavigationController; [aNavigationController release]; [rootViewController release]; navController.view.frame = CGRectMake(0, 0, 320, 460); [self.view addSubview:navController.view]; } In RootViewController.m I have - (void)viewDidLoad { [super viewDidLoad]; self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Close" style:UIBarButtonItemStyleBordered target:self action:@selector(close:)]; } -(void)close:(id)sender { [self.view removeFromSuperview]; [self dismissModalViewControllerAnimated:YES]; } WhenI touch close button I need to return the view1. So, I removed the tableView by using removeFromSuperView. But, I am not able to get to the first view. I do not get where to use - (void)dismissModalViewControllerAnimated:(BOOL)animated; to navigate to first view1 where I have started ? How can I do this ? Thank You.

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• UINavigationController crash because of pushing and poping UIViewControllers

  - by Wayne Lo

  My question is related to my discovery of a reason for UINavigationController to crash. So I will tell you about the discovery first. Please bare with me. The issue: I have a UINavigationController as as subview of UIWindow, a rootViewController class and a custom MyViewController class. The following steps will get a Exc_Bad_Access, 100% reproducible.: [myNaviationController pushViewController:myViewController_1stInstance animated:YES]; [myNaviationController pushViewController:myViewController_2ndInstance animated:YES]; Hit the left back tapBarItem twice (pop out two of the myViewController instances) to show the rootViewController. After a painful 1/2 day of try and error, I finally figure out the answer but also raise a question. The Solutio: I declared many objects in the .m file as a lazy way of declaring private variables to avoid cluttering the .h file. For instance, #impoart "MyViewController.h" NSMutableString*variable1; @implement ... -(id)init { ... varialbe1=[[NSMutableString alloc] init]; ... } -(void)dealloc { [variable1 release]; } For some reasons, the iphone OS may loose track of these "lazy private" variables memory allocation when myViewController_1stInstance's view is unloaded (but still in the navigation controller's stacks) after loading the view of myViewController_2ndInstance. The first time to tap the back tapBarItem is ok since myViewController_2ndInstance'view is still loaded. But the 2nd tap on the back tapBarItem gave me hell because it tried to dealloc the 2nd instance. Executing [variable release] resulted in Exc_Bad_Access because it pointed randomly (loose pointer). To fix this problem is simple, declare variable1 as a @private in the .h file. Here is my Question: I have been using the "lazy private" variables for quite some time without any issues until they are involved in UINavigationController. Is this a bug in iPhone OS? Or there is a fundamental misunderstanding on my part about Objective C? Please help.

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• How to allow tap-to-focus on the camera using an overlay

  - by AJJ

  The standard 3GS iPhone camera includes tap-to-focus (I can tap to the region I want to focus on). However when I use a custom overlay using the UIImagePickerController class, the tap to focus does not seem to work. Everything else in terms of capturing images programmatically etc is working btw. Note that my overlay view is only a small rectangle (UIView) at the bottom of the screen. It does not cover the other areas of the camera. So I believe the taps should go through (unless I am missing something). I have seen other apps use an overlay and still provide a tap-to-focus functionality, so there must be a way to do this. I use all the default controls set to be hidden as: imagePicker.showsCameraControls = NO; imagePicker.toolbarHidden = YES; imagePicker.navigationBarHidden = YES; Of course changing the above does not let me tap-to-focus (it just enables the toolbars, etc). I could not find any answers on the UIImagePickerController class reference. Any help would be greatly appreciated. Thanks!

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• NSCollectionView subclass doesn't call drawRect during drag session despite setNeedsDisplay

  - by Alain Vitry

  Greetings, I am puzzled as to how and when drawRect is supposed to be called in a NSCollectionView subclass. I implement drag and drop operation in order to move NSCollectionViewItems within the collection, and would like to draw a visual indication of where the drop would end. The subclass does not call drawRect during the drag session. (It does during scroll) Is this the intended operation ? Any hint on how to implement this behavior properly are welcome. A full xcode project of the following code is available at: http://babouk.ovh.org/dload/MyCollectionView.zip Best regards Code sample: @interface CollectionViewAppDelegate : NSObject <NSApplicationDelegate> { NSWindow *window; NSMutableArray *collectionContent; } /* properties declaration */ /* KVC compliance declarations */ @end @interface MyCollectionView : NSCollectionView @end @interface ItemModel { NSString *name; } @property (copy) NSString *name; @end @implementation MyCollectionView - (void)drawRect:(NSRect)rect { NSLog(@"DrawRect"); } - (void)mouseDragged:(NSEvent *)aEvent { NSPoint localPoint = [self convertPoint:[aEvent locationInWindow] fromView:nil]; [self dragImage:[NSImage imageNamed:@"Move.png"] at:localPoint offset:NSZeroSize event:aEvent pasteboard:nil source:self slideBack:NO]; } - (BOOL)prepareForDragOperation:(id < NSDraggingInfo >)sender { return YES; } - (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender { return NSDragOperationEvery; } - (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender { [self setNeedsDisplay:YES]; return NSDragOperationEvery; } - (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)isLocal { return NSDragOperationEvery; } - (void)mouseDown:(NSEvent *)theEvent { } @end @implementation CollectionViewAppDelegate @synthesize window, collectionContent, collectionView; - (void)applicationDidFinishLaunching:(NSNotification *)aNotification { NSMutableArray *data = [[NSMutableArray alloc] init]; /* Fill in data */ [self setCollectionContent:data]; [data release]; } /* dealloc */ /* KVC implementation */ @end @implementation ItemModel @synthesize name; /* dealloc */ @end

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• Force a UIView to redraw immediately, instead of during next run loop

  - by Justin Kent

  I've created a UIImagePicker / camera view, with a toolbar and custom button for taking a snapshot. I can't really change to using the default way because of the custom button, and I'm drawing on top of the view. When you hit the button, I want to take a screenshot using UIGetScreenImage(); however, the toolbar is showing up in the image, even if I hide it first: //hide the toolbar self.toolbar.hidden = YES; // capture the screen pixels CGImageRef screenCap = UIGetScreenImage(); I'm pretty sure this is because even though the toolbar is hidden, it gets redrawn once the function returns and we enter the next run loop - after UIGetScreenImage is called. I tried making the following addition, but it didn't help: //hide the toolbar self.toolbar.hidden = YES; [self.toolbar drawRect:CGRectMake(0, 0, 320, 52)]; // capture the screen pixels CGImageRef screenCap = UIGetScreenImage(); I also tried using setNeedsDisplay, but that doesn't work either because once again the draw happens after the current function returns. Any suggestions? Thanks!

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• Ant target generate empty suite xml file

  - by user200317

  I am using ant for my project and I have been trying to generate JUnit report using ant target. The problem I run in to is that at the end of the execution my TESTS-TestSuites.xml is empty. But all the other individual test xml files have data. And due to this my html reports are empty, in the sense results shows "0". Here is my ant target <!-- JUnit Reporting --> <target name="test-report" depends="build-all" description="Generate Test Results as HTML"> <taskdef name="junitreport" classname="org.apache.tools.ant.taskdefs.optional.junit.XMLResultAggregator"/> <junit printsummary="on" haltonfailure="off" haltonerror="off" fork="yes"> <batchtest fork="yes" todir="${test.reports}" filtertrace="on"> <fileset dir="${build.classes}" includes="**/Test*Selenium.class"/> </batchtest> <formatter type="plain" usefile="false"/> <formatter type="xml" usefile="true"/> <classpath> <path refid="classpath"/> <path refid="application"/> </classpath> </junit> <echo message="running JUnit Report" /> <junitreport todir="${test.reports}"> <fileset dir="${test.reports}"> <include name="Test-*.xml" /> </fileset> <report format="frames" todir="${test.reports.html}" /> </junitreport> </target> This is what I get as ant print summary, [junitreport] Processing C:\YukonSelenium\reports\TESTS-TestSuites.xml to C:\DOCUME~1\user\LOCALS~1\Temp\null1848051184 [junitreport] Loading stylesheet jar:file:/C:/DevApps/apache-ant-1.7.1/lib/ant junit.jar!/org/apache/tools/ant/taskdefs/optional/junit/xsl/junit-frames.xsl [junitreport] Transform time: 859ms [junitreport] Deleting: C:\DOCUME~1\user\LOCALS~1\Temp\null1848051184 Here's how junit report looks like http://www.freeimagehosting.net/image.php?43dd69d3b8.jpg Thanks in advance,

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• Dismiss Popover using Unwind Segue in Xcode Storyboard

  - by AlexR

  I am using Xcode 4.5 and the new iOS 6 feature to unwind segues. I am presenting a navigation view controller inside a popover which is presented programmatically from a bar button item: - (IBAction)configChartTapped:(id)sender { if (self.popover.isPopoverVisible) { [self.popover dismissPopoverAnimated:YES]; } else { UINavigationController *chartConfigNavigationController = [self.storyboard instantiateViewControllerWithIdentifier:@"GrowthChartNavigationController"]; ConfigChartTypeViewController *configChartTypeViewController = (ConfigChartTypeViewController*) chartConfigNavigationController.topViewController; self.popover = [[UIPopoverController alloc]initWithContentViewController:chartConfigNavigationController]; self.popover.popoverContentSize = CGSizeMake(320, 500); self.popover.delegate = self; [self.popover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES]; } } Next to this method I have defined a target to unwind the segue (i.e. dismissing the popover)... - (IBAction)cancelConfig:(UIStoryboardSegue *)segue { // } ... and connected it to a cancel button in the navigation view controllers's navigation bar. Connecting the cancel bar button to the cancelConfig button worked fine in Xcode. However, when running the code, nothing happens when clicking on the Cancel button despite Xcode 4.5 should be supporting dismissing popovers when unwinding segues (according to the release docs). What did I miss? Thank you!

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• Schedule multiple events with NSTimer?

  - by AWright4911

  I have a schedule cache stored in a pList. For the example below, I have a schedule time of April 13, 2010 2:00PM and Aril 13, 2010 2:05PM. How can I add both of these to a queue to fire on their own? item 0 -Hour --14 -Minute --00 -Month --04 -Day --13 -Year --2010 item 1 -Hour --14 -Minute --05 -Month --04 -Day --13 -Year --2010 this is how I am attempting to schedule multiple events to fire at specific date / time. -(void) buildScheduleCache { MPNotifyViewController *notifier = [MPNotifyViewController alloc] ; [notifier setStatusText:@"Rebuilding schedule cache, this will only take a moment."]; [notifier show]; NSCalendarDate *now = [NSCalendarDate calendarDate]; NSFileManager *manager = [[NSFileManager defaultManager] autorelease]; path = @"/var/mobile/Library/MobileProfiles/Custom Profiles"; theProfiles = [manager directoryContentsAtPath:path]; myPrimaryinfo = [[NSMutableArray arrayWithCapacity:6] retain]; keys = [NSArray arrayWithObjects:@"Profile",@"MPSYear",@"MPSMonth",@"MPSDay",@"MPSHour",@"MPSMinute",nil]; for (NSString *profile in theProfiles) { plistDict = [[[NSMutableDictionary alloc] initWithContentsOfFile:[NSString stringWithFormat:@"%@/%@",path,profile]] autorelease]; [myPrimaryinfo addObject:[NSDictionary dictionaryWithObjects: [NSArray arrayWithObjects: [NSString stringWithFormat:@"%@",profile], [NSString stringWithFormat:@"%@",[plistDict objectForKey:@"MPSYear"]], [NSString stringWithFormat:@"%@",[plistDict objectForKey:@"MPSMonth"]], [NSString stringWithFormat:@"%@",[plistDict objectForKey:@"MPSDay"]], [NSString stringWithFormat:@"%@",[plistDict objectForKey:@"MPSHour"]], [NSString stringWithFormat:@"%@",[plistDict objectForKey:@"MPSMinute"]], nil]forKeys:keys]]; profileSched = [NSCalendarDate dateWithYear:[plistDict objectForKey:@"MPSYear"] month:[plistDict objectForKey:@"MPSMonth"] day:[plistDict objectForKey:@"MPSDay"] hour:[plistDict objectForKey:@"MPSHour"] minute:[plistDict objectForKey:@"MPSMinute"] second:01 timeZone:[now timeZone]]; [self rescheduleTimer]; } NSString *testPath = @"/var/mobile/Library/MobileProfiles/Schedules.plist"; [myPrimaryinfo writeToFile:testPath atomically:YES]; } -(void) rescheduleTimer { timer = [[NSTimer alloc] initWithFireDate:profileSched interval:0.0f target:self selector:@selector(theFireEvent) userInfo:nil repeats:YES]; NSRunLoop *runLoop = [NSRunLoop currentRunLoop]; [runLoop addTimer:timer forMode:NSDefaultRunLoopMode]; }

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• iPhone SDK - (void)viewDidLoad { } - Show Progress

  - by Hank Brekke

  I have a long - (void)viewDidLoad { } function that uses the internet to load a page, and whenever the application loads the URL, the screen is black. I have a UIActivityIndicator setup to show that the address is loading, but I don't know how to prevent it from seeming as if the application is not responding, and I don't want to show the network activity indicator [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES]; because the screen will still be black, just with a loader in the top corner. My code is below: - (void)viewDidLoad { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; email.text = [defaults objectForKey:@"mom_email"]; pass.text = [defaults objectForKey:@"mom_pass"]; if (email.text != nil && pass.text != nil) { [self login:loginBtn]; } } - (IBAction)login:(id)sender { [email resignFirstResponder]; [pass resignFirstResponder]; [loader startAnimating]; // Does nothing though NSString *em = (NSString *)CFURLCreateStringByAddingPercentEscapes(NULL,(CFStringRef)email.text,NULL,(CFStringRef)@"!*'();:@&=+$,/?%#[]",kCFStringEncodingUTF8); NSString *ps = (NSString *)CFURLCreateStringByAddingPercentEscapes(NULL,(CFStringRef)pass.text,NULL,(CFStringRef)@"!*'();:@&=+$,/?%#[]",kCFStringEncodingUTF8); NSURL *url = [[NSURL alloc] initWithScheme:@"http" host:@"localhost" path:[[NSString alloc] initWithFormat:@"/app/login.php?email=%@&pass=%@", em, ps]]; NSURLRequest *request = [NSURLRequest requestWithURL:url]; NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; NSString *loginResult = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; [loader stopAnimating]; NSRange range = [loginResult rangeOfString:@"1"]; if (range.location != NSNotFound) { [self dismissModalViewControllerAnimated:YES]; // Doesn't do anything if function called from viewDidLoad } }

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• Multithreaded search with UISearchDisplayController

  - by Kulpreet

  I'm sort of new to any sort of multithreading and simply can't seem to get a simple search method working on a background thread properly. Everything seems to be in order with an NSAutoreleasePool and the UI being updated on the main thread. The app doesn't crash and does perform a search in the background but the search results yield the several of the same items several times depending on how fast I type it in. The search works properly without the multithreading (which is commented out), but is very slow because of the large amounts of data I am working with. Here's the code: - (void)filterContentForSearchText:(NSString*)searchText { NSAutoreleasePool *apool = [[NSAutoreleasePool alloc] init]; isSearching = YES; //[self.filteredListContent removeAllObjects]; // First clear the filtered array. for (Entry *entry in appDelegate.entries) { NSComparisonResult result = [entry.item compare:searchText options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [searchText length])]; if (result == NSOrderedSame) { [self.filteredListContent addObject:entry]; } } isSearching=NO; [self.searchDisplayController.searchResultsTableView performSelectorOnMainThread:(@selector(reloadData)) withObject:nil waitUntilDone:NO]; //[self.searchDisplayController.searchResultsTableView reloadData]; [apool drain]; } - (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString { [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(filteredListContent:) object:searchString]; [self.filteredListContent removeAllObjects]; // First clear the filtered array. [self performSelectorInBackground:(@selector(filterContentForSearchText:)) withObject:searchString]; //[self filterContentForSearchText:searchString]; // Return YES to cause the search result table view to be reloaded. return NO; }

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• PLT Scheme Memory

  - by Eric

  So I need some help with implementing a Make-memory program using Scheme. I need two messages 'write and 'read. So it would be like (mymem 'write 34 -116) and (mymem 'read 99) right? and (define mymem (make-memory 100)).....How would I implement this in scheme? using an Alist???I need some help coding it. I have this code which makes make-memory a procedure and when you run mymem you get ((99.0)) and what i need to do is recur this so i get an alist with dotted pairs to ((0.0)). So any suggestions on how to code this?? Does anyone have any ideas what I could do to recur and make messages Write and read?? (define make-memory (lambda (n) (letrec ((mem '()) (dump (display mem))) (lambda () (if (= n 0) (cons (cons n 0) mem) mem) (cons (cons (- n 1) 0) mem)) (lambda (msg loc val) (cond ((equal? msg 'read) (display (cons n val))(set! n (- n 1))) ((equal? msg 'write) (set! mem (cons val loc)) (set! n (- n 1)) (display mem))))))) (define mymem (make-memory 100)) Yes this is an assignment but I wrote this code. I just need some help or direction. And yes I do know about variable-length argument lists.

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• Remove mailmerge data source via OpenXML

  - by Dan

  I have some code that uses OpenXML to open up a docx file, find all mailmerge fields, and replace them with data (ignoring the datasource that may have been provided). I initially tested this against a document created in Office 2007 and it seemed to work great. We then created one in 2003 based off an Excel spreadsheet data source and saved it to 2007 docx format. When we open the file produced by my code, Word warns the user that it is going to execute some SQL, specifically "SELECT * from 'Sheet1$'". It has options of Yes/No. Selecting Yes requires I find the data source. Selecting No brings me to the document, which appears to be correct. I'm not sure why I'm now seeing this pop up. Perhaps it's due to a different data source for the 2003 document? My hope was that there was a way to delete all references to any datasources and that the pop-up wouldn't show. I found this, but it doesn't seem to work. Any suggestions?

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