Search Results

Search found 10773 results on 431 pages for 'core foundation'.

Page 55/431 | < Previous Page | 51 52 53 54 55 56 57 58 59 60 61 62  | Next Page >

  • Which methods are good to overwrite when creating custom NSManagedObject subclasses?

    - by mystify
    The Core Data Programming Guide talks a lot about what not to overwrite. So the question is: What is good to overwrite? Like I see it, I can't overwrite -init or -initWithEntity:insertIntoManagedObjectContext: So where else would be a good overwrite point to set up some basic stuff? Or is it generally not needed to do custom initialization? Does the whole thing rely only on accessing properties which then start to do fancy things? So no custom initializations?

    Read the article

  • managed object subclasses are not generating implementation files and are incorrectly named

    - by mkc842
    In Xcode 4.6, I generated plenty of managed object subclass files without any problem. But now that I'm trying to do it in Xcode 5, it generates only a .h file. The header file has the correct properties, but it takes the name of my project, rather than the name of the core data entity I selected. Just to be sure I hadn't forgotten something, I carefully followed these steps . What could be going on? Thanks

    Read the article

  • My card reader doesn't show up at all, but previously did in 10.10

    - by Nathan J. Brauer
    I bought a pin-based-USB powered internal media card reader and it worked perfectly when I first installed Ubuntu 10.10 a month ago. I used it a few times since and today I booted up the computer and it's not working. Here's how it used to work: In nautilus->computer, 5 "drives" would display even when no card was inserted. One for each slot (SD, XD, CF/MS, etc). Opening one w/o a card would initiate a "Please insert card." dialog. Inserting a card would automatically open nautilus. Now: No drives display at all whether cards are inserted or not. lsusb lists the following (which seems to indicate that it's not being detected) Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 002: ID 046d:c52e Logitech, Inc. (my keyboard/mouse) Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub (A side note, all of my USB ports are 2.0 + 1 USB port which is 3.0, why does everything say 1.1/2.0?) I tried using ubuntu-bug but for USB devices it expects you to be able to remove and insert them while the computer is running -- obviously something you probably shouldn't be doing when you're dealing with devices plugged straight into the USB pins. Thanks in advance!

    Read the article

  • How do I mount my Android phone?

    - by Amanda
    I'm puzzled because my phone used to just appear when I plugged it in. It doesn't anymore and The development options are definitely set to allow USB debugging. The phone is charging via USB but doesn't appear in lsusb [0 amanda@luna android-sdk-linux_86]$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 004: ID 17ef:4807 Lenovo UVC Camera Bus 003 Device 012: ID 413c:1003 Dell Computer Corp. Keyboard Hub Bus 003 Device 003: ID 08ff:2810 AuthenTec, Inc. AES2810 Bus 003 Device 013: ID 413c:2010 Dell Computer Corp. Keyboard Bus 003 Device 014: ID 046d:c001 Logitech, Inc. N48/M-BB48 [FirstMouse Plus] adb devices -l shows nothing. In my Wireless and Network settings I changed the USB connection settings to "Mass storage" -- they were set to "Ask on connection" though I definitely wasn't getting asked. I don't get any Click here to connect via USB alert either. I'm not even sure whether the issue is my phone or my computer. It seems odd that it isn't even appearing in lsusb Not for nothing, the thumb drive on my keyring also does not appear in lsusb -- I've tried both in a bunch of different ports. I kind of assume the thumb drive is just borked, but it could be my OS.

    Read the article

  • Davicom DM9601 USB LAN NIC Ubuntu 11.10 issue

    - by Gaurav_Java
    I have a davicom dm9601 USB ethernet card. When I plug in the device, it is detected and drivers are loaded, but I can't connect to internet using it. It works perfectly on XP, other laptop but not working on Ubuntu 11.10 How can I install the driver for this? I have tried many things But nothing is working. If I go to this link driver but not compiling or may I be doing something wrong. I found this one but don't know how to follow these steps . This is my lsusb output: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 004: ID 064e:a103 Suyin Corp. Acer/HP Integrated Webcam [CN0314] Bus 003 Device 002: ID 08ff:1600 AuthenTec, Inc. AES1600 Bus 005 Device 002: ID 0a46:9601 Davicom Semiconductor, Inc. DM9601 Fast Ethernet Adapter Bus 006 Device 002: ID 046d:c045 Logitech, Inc. Optical Mouse Bus 003 Device 003: ID 0a5c:2101 Broadcom Corp. Bluetooth Controller Bus 004 Device 002: ID 04d9:1702 Holtek Semiconductor, Inc. But when I connected my Internet from different system its start working.

    Read the article

  • USB Keyboard doesn't work in Ubuntu 14.04

    - by Steven Crossan
    My USB keyboard isn't working in Ubuntu 14.04, but also didn't work in 13.10. I upgraded today in the hope that the issue would be resolved, but it wasn't. The keyboard works in BIOS and GRUB but stops working when I reach the login screen. It is detected by the system, but just doesn't work. Output of lsusb: Bus 002 Device 002: ID 0846:9011 NetGear, Inc. WNDA3100v2 802.11abgn [Broadcom BCM4323] Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 002: ID 1532:000d Razer USA, Ltd Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 002: ID 060b:2231 Solid Year KSK-6001 UELX Keyboard Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub I added: hid usbhid hid_generic ohci_pci To /etc/initramfs-tools/modules and did update-initramfs -u, but that didn't work. I'm new to Ubuntu/Linux and any help you could provide would be greatly appreciated!

    Read the article

  • iPhone App Crashes when merging managed object contexts

    - by DVG
    Short Version: Using two managed object contexts, and while the context is saving to the store the application bombs when I attempt to merge the two contexts and reload the table view. Long Version: Okay, so my application is set up as thus. 3 view controllers, all table views. Platforms View Controller - Games View Controller (Predicated upon platform selection) - Add Game View Controller I ran into a problem when Games View Controller was bombing when adding a new entry to the context, because the fetched results contorller wanted to update the view for something that didn't match the predicate. As a solution, I rebuilt the Add Controller to use a second NSManagedObject Context, called adding context, following the design pattern in the Core Data Books example. My Games List View Controller is a delegate for the add controller, to handle all the saving, so my addButtonPressed method looks like this - (IBAction) addButtonPressed: (id) sender { AddGameTableViewController *addGameVC = [[AddGameTableViewController alloc] initWithNibName:@"AddGameTableViewController" bundle:nil]; NSManagedObjectContext *aAddingContext = [[NSManagedObjectContext alloc] init]; self.addingContext = aAddingContext; [aAddingContext release]; [addingContext setPersistentStoreCoordinator:[[gameResultsController managedObjectContext] persistentStoreCoordinator]]; addGameVC.context = addingContext; addGameVC.delegate = self; addGameVC.newGame = (Game *)[NSEntityDescription insertNewObjectForEntityForName:@"Game" inManagedObjectContext:addingContext]; UINavigationController *addNavCon = [[UINavigationController alloc] initWithRootViewController:addGameVC]; [self presentModalViewController:addNavCon animated:YES]; [addGameVC release]; [addNavCon release]; } There is also a delegate method which handles the saving. This all works swimmingly. The issue is getting the table view controller in the GameListViewController to update itself. Per the example, an observer is added to watch for the second context to be saved, and then to merge the addingContext with the primary one. So I have: - (void)addViewController:(AddGameTableViewController *)controller didFinishWithSave:(BOOL)save { if (save) { NSNotificationCenter *dnc = [NSNotificationCenter defaultCenter]; [dnc addObserver:self selector:@selector(addControllerContextDidSave:) name:NSManagedObjectContextDidSaveNotification object:addingContext]; //snip! Context Save Code [dnc removeObserver:self name:NSManagedObjectContextDidSaveNotification object:addingContext]; } self.addingContext = nil; [self dismissModalViewControllerAnimated:YES]; } - (void)addControllerContextDidSave:(NSNotification*)saveNotification { NSManagedObjectContext *myContext = [gameResultsController managedObjectContext]; [myContext mergeChangesFromContextDidSaveNotification:saveNotification]; } So now, what happens is after save is pressed, the application hangs for a moment and then crashes. The save is processed, as the new game is present when I relaunch the application, and the application seems to be flowing as appropriate, but it bombs out for reasons that are beyond my understanding. NSLog of the saveNotification spits out this: NSConcreteNotification 0x3b557f0 {name = NSManagingContextDidSaveChangesNotification; object = <NSManagedObjectContext: 0x3b4bb90>; userInfo = { inserted = {( <Game: 0x3b4f510> (entity: Game; id: 0x3b614e0 <x-coredata://13168366-B8E7-41C8-B384-BAF14A5E08D9/Game/p2> ; data: { name = "Final Fantasy XIII"; platform = 0x3b66910 <x-coredata://13168366-B8E7-41C8-B384-BAF14A5E08D9/Platform/p20>; }) )}; updated = {( <Platform: 0x3b67650> (entity: Platform; id: 0x3b66910 <x-coredata://13168366-B8E7-41C8-B384-BAF14A5E08D9/Platform/p20> ; data: { games = ( 0x3b614e0 <x-coredata://13168366-B8E7-41C8-B384-BAF14A5E08D9/Game/p2>, 0x603a530 <x-coredata://13168366-B8E7-41C8-B384-BAF14A5E08D9/Game/p1> ); name = "Xbox 360"; }) )}; }} I've tried both a simple [self.tableView reloadData]; and the more complicated multi-method table updating structure in the Core Data Books example. Both produce the same result.

    Read the article

  • App freezing after lunch without any Error on Iphone Simulator?

    - by Meko
    HI.I am using CoreData on my UITable to show some records.It works when I first run.But if I run my app on simulator second time it shows up with data but then it stops.Sometimes it quits from app or it only froze and i cant click on table or tab bar. I looked also on Console but I thought there is no error.Here output from console The Debugger has exited with status 0. [Session started at 2010-03-30 00:22:06 +0300.] 2010-03-30 00:22:08.660 Paparazzi2[3556:207] Creating Photo: Urban disaster 2010-03-30 00:22:08.661 Paparazzi2[3556:207] Person is: Josh 2010-03-30 00:22:08.665 Paparazzi2[3556:207] Person is: Josh 2010-03-30 00:22:08.665 Paparazzi2[3556:207] -- Person Exists : Josh-- 2010-03-30 00:22:08.719 Paparazzi2[3556:207] Creating Photo: Concrete pitch forks 2010-03-30 00:22:08.719 Paparazzi2[3556:207] Person is: Josh 2010-03-30 00:22:08.721 Paparazzi2[3556:207] Person is: Josh 2010-03-30 00:22:08.721 Paparazzi2[3556:207] -- Person Exists : Josh-- 2010-03-30 00:22:08.727 Paparazzi2[3556:207] Creating Photo: Leaves on fire 2010-03-30 00:22:08.728 Paparazzi2[3556:207] Person is: Al 2010-03-30 00:22:08.734 Paparazzi2[3556:207] Person is: Al 2010-03-30 00:22:08.734 Paparazzi2[3556:207] -- Person Exists : Al-- [Session started at 2010-03-30 00:22:08 +0300.] GNU gdb 6.3.50-20050815 (Apple version gdb-967) (Tue Jul 14 02:11:58 UTC 2009) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-apple-darwin".sharedlibrary apply-load-rules all Attaching to process 3556. (gdb)

    Read the article

  • Help with Custom Workflow that monitors an objects state

    - by zSysop
    I need to write a workflow that monitors the status of an object. (It could wait for days or hours for a state to change) I have the following states for the object (lets call it an Issue object): 1) Created 2) Unowned 3) Owned 4) UnAssigned 4) Assigned 6) In Progress 7) Signed Off 8) Closed I would also need to take some action on an object if the object was within a certain state for a defined period (not really sure on how this can be accomplished either). The object's owner/assignee can change at any point (i.e. Go from In Progress to UnOwned) so i am guessing that a state machine diagram is what i would need to use. If my thinking is incorrect then please let me know. My application is written in c# .net 3.5. I was thinking about having a service method called CreateIssue that would insert the ticket into the db and then begin an instance of a workflow (with the object or an id of the object as parameters). I wasn't sure of how the workflow would then know when a particular object has been updated, or if the object's state has changed. I've done some really simple "hello world" type of apps with windows workflow foundation 3.5 but have not yet grasped how to do go about implementing something like this. Any direction on this will be extremely helpful. Thanks in advance.

    Read the article

  • WF performance with new 20,000 persisted workflow instances each month

    - by Nikola Stjelja
    Windows Workflow Foundation has a problem that is slow when doing WF instances persistace. I'm planning to do a project whose bussiness layer will be based on WF exposed WCF services. The project will have 20,000 new workflow instances created each month, each instance could take up to 2 months to finish. What I was lead to belive that given WF slownes when doing peristance my given problem would be unattainable given performance reasons. I have the following questions: Is this true? Will my performance be crap with that load(given WF persitance speed limitations) How can I solve the problem? We currently have two possible solutions: 1. Each new buisiness process request(e.g. Give me a new drivers license) will be a new WF instance, and the number of persistance operations will be limited by forwarding all status request operations to saved state values in a separate database. 2. Have only a small amount of Workflow Instances up at any give time, without any persistance ofso ever(only in case of system crashes etc.), by breaking each workflow stap in to a separate worklof and that workflow handling each business process request instance in the system that is at that current step(e.g. I'm submitting my driver license reques form, which is step one... we have 100 cases of that, and my step one workflow will handle every case simultaneusly). I'm very insterested in solution for that problem. If you want to discuss that problem pleas be free to mail me at [email protected]

    Read the article

  • A way to enable a LaunchDaemon to output sound?

    - by Varun Mehta
    I have a small Foundation application that checks a website and plays a sound if it sees a certain value. This application successfully plays a sound when I run it as my user from the Terminal. I've configured this app to run as a LaunchDaemon, with the following plist: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Label</key> <string>org.myorg.appidentifier</string> <key>ProgramArguments</key> <array> <string>/Users/varunm/path/to/cli/application</string> </array> <key>KeepAlive</key> <true/> <key>RunAtLoad</key> <true/> </dict> </plist> When I have this service launched I can see it successfully read in and log values from the website, but it never generates any sound. The sound files are located in the same directory as the binary, and I use the following code: NSSound *soundToPlay = [[NSSound alloc] initWithContentsOfFile:@"sound.wav" byReference:NO]; [soundToPlay setDelegate:stopper]; [soundToPlay play]; while (g_keepRunning) { [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:1.0]]; } [soundToPlay setCurrentTime:0.0]; Is there any way to get my LaunchDaemon application to play sound? This machine gets run by different people, and sometimes has no one logged in, which is why I have to configure it as a LaunchDaemon.

    Read the article

  • Need some advice before starting coding my next iPhone app...

    - by Tom
    Hi! I need some advice about how should I start coding something. So here is the context: I've just finished building a CMS that manage a SQLite database. My application will be picking this database and use its content as the application's content. So far it's pretty simple. The application will have a navigation that will browse through various workflows, and once at the end workflow, it'll show contents from the database. A consultation kind a thing, example: Liquids - Juice - Orange Juice - Informations about Orange Juice. For my SQLite transactions, so far I believe I'll be using fmdb. It looks like a great wrapper. Here's a simple schema from one of the database: Workflow: id: { type: integer(3), primary: true, autoincrement: true } workflow_id: { type: integer(1) } name: { type: string(255) } That table's rows will be my navigations. Do you believe I should use a navigation controller? If so, then how could I generate the navigation tree from it? I have a good working knowledge of Objective-C and Foundation framework, but never went too far with it so that is why I'm asking before starting in the wrong direction :) Thanks a lot.

    Read the article

  • What are some commonly used source code check-in policies?

    - by rwmnau
    I'm curious what code review policies other development shops apply to their source code when it's checked into the source control repository. I'm setting up a TFS (Team Foundation) server, and I'd like to apply some check-in policies to start to stamp out bad practices. For example, I was thinking of starting with the following couple, so this is the kind of stuff I'm looking for: Prohibit empty "Catch" blocks. This would prevent applications from swallowing any exceptions without at least requiring a comment explaining why it's not necessary to do anything with the exception. Prohibit "Catch ex as Exception" generic exception handling. Instead, require code to catch specific types of exceptions and deal with them appropriately, instead of just building catch-all handling. Require a check-in comment. This one should be self-explanatory, though it seems that TFS (and most other source-control systems) don't require a comment by default. While these are just examples, they're where I'm thinking of starting, and while I'd like some additional examples of what's popular, I'm open to feedback on these. Also, though we're a mostly .NET shop, I imagine the popular policies are universal across languages and IDEs (we have some Java development and a few people who will use the repository develop with Eclipse).

    Read the article

  • Unable to "Run on Server" a webapp from Eclipse

    - by Ram
    When running my WebApp project from Eclipse most of times it run correctly. But if by mistake to stop server, I kill it in "Console" view on instead of "Stop" Server from "Servers" View. While running clean project I get this java.lang.NullPointerException at org.eclipse.wst.common.componentcore.internal.util.VirtualReferenceUtilities.getDefaultProjectArchiveName(VirtualReferenceUtilities.java:81) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getJavaClasspathReferences(J2EEModuleVirtualComponent.java:332) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getNonManifestRefs(J2EEModuleVirtualComponent.java:236) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:160) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:208) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:201) at org.eclipse.jst.common.internal.modulecore.SingleRootUtil.hasConsumableReferences(SingleRootUtil.java:217) at org.eclipse.jst.common.internal.modulecore.SingleRootUtil.validateSingleRoot(SingleRootUtil.java:165) at org.eclipse.jst.common.internal.modulecore.SingleRootUtil.isSingleRoot(SingleRootUtil.java:93) at org.eclipse.jst.common.internal.modulecore.SingleRootExportParticipant.canOptimize(SingleRootExportParticipant.java:84) at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.canOptimize(FlatVirtualComponent.java:136) at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.cacheResources(FlatVirtualComponent.java:118) at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.fetchResources(FlatVirtualComponent.java:101) at org.eclipse.wst.web.internal.deployables.FlatComponentDeployable.members(FlatComponentDeployable.java:147) at org.eclipse.wst.server.core.internal.ModulePublishInfo.hasDelta(ModulePublishInfo.java:418) at org.eclipse.wst.server.core.internal.ServerPublishInfo.hasDelta(ServerPublishInfo.java:443) at org.eclipse.wst.server.core.internal.Server.hasPublishedResourceDelta(Server.java:1539) at org.eclipse.wst.server.core.internal.Server$ResourceChangeJob$1.visit(Server.java:214) at org.eclipse.wst.server.core.internal.Server.visitModule(Server.java:2929) at org.eclipse.wst.server.core.internal.Server.visit(Server.java:2913) at org.eclipse.wst.server.core.internal.Server$ResourceChangeJob.run(Server.java:225) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54) And while launching I get this SEVERE: Error starting static Resources java.lang.IllegalArgumentException: Document base D:\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\Webapp does not exist or is not a readable directory at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:142) at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4319) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:840) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) Please help recover from this.

    Read the article

  • PDF rendering crashes app Core Graphics

    - by Felixyz
    EDIT: The memory leaks turned out to be unrelated to the crashes. Leaks are fixed but crashes remain, still mysterious. My (iPhone) app does lots of PDF loading and rendering, some of it threaded. Sometime, it seems always after I flush a page cash after getting a memory warning, the app crashes with a bad access when trying to draw a pdf page stored in an NSData object. Here is one example trace: #0 0x3016d564 in CGPDFResourcesGetResource () #1 0x3016d58a in CGPDFResourcesGetResource () #2 0x3016d94e in CGPDFResourcesGetExtGState () #3 0x3015fac4 in CGPDFContentStreamGetExtGState () #4 0x301629a8 in op_gs () #5 0x3016df12 in handle_xname () #6 0x3016dd9e in read_objects () #7 0x3016de6c in CGPDFScannerScan () #8 0x30161e34 in CGPDFDrawingContextDraw () #9 0x3016a9dc in CGContextDrawPDFPage () But sometimes I get this instead: Program received signal: “EXC_BAD_ACCESS”. (gdb) bt #0 0x335625fa in objc_msgSend () #1 0x32c04eba in CFDictionaryGetValue () #2 0x3016d500 in get_value () #3 0x3016d5d6 in CGPDFResourcesGetFont () #4 0x3015fbb4 in CGPDFContentStreamGetFont () #5 0x30163480 in op_Tf () #6 0x3016df12 in handle_xname () #7 0x3016dd9e in read_objects () #8 0x3016de6c in CGPDFScannerScan () #9 0x30161e34 in CGPDFDrawingContextDraw () #10 0x3016a9dc in CGContextDrawPDFPage () Is this an indication that I've mistakenly deallocated an object? It's hard for me to decode what's happening here. This is how I create and retain the various objects involved: // Some data was just loaded from the network and is pointed to by "data" self.pdfData = data; _dataProviderRef = CGDataProviderCreateWithData( NULL, [_pdfData bytes], [_pdfData length], NULL ); _documentRef = CGPDFDocumentCreateWithProvider(_dataProviderRef); _pageRef = CGPDFDocumentGetPage(_documentRef, 1); CGPDFPageRetain(_pageRef); _pdfFrame = CGPDFPageGetBoxRect(_pageRef, kCGPDFArtBox); So the NSData object is retained, and I explicitly retain the page reference. The data provider and the document are already retained by the create-functions. And here is my dealloc method: -(void)dealloc { if (_pageRef) CGPDFPageRelease(_pageRef); if (_documentRef) CGPDFDocumentRelease(_documentRef); if (_dataProviderRef) CGDataProviderRelease(_dataProviderRef); self.pdfData = nil; [super dealloc]; } Am I doing anything wrong? Even an assurance that I'm not, with explanation, would be a help.

    Read the article

  • App using MonoTouch Core Graphics mysteriously crashes

    - by Stephen Ashley
    My app launches with a view controller and a simple view consisting of a button and a subview. When the user touches the button, the subview is populated with scrollviews that display the column headers, row headers, and cells of a spreadsheet. To draw the cells, I use CGBitmapContext to draw the cells, generate an image, and then put the image into the imageview contained in the scrollview that displays the cells. When I run the app on the iPad, it displays the cells just fine, and the scrollview lets the user scroll around in the spreadsheet without any problems. If the user touches the button a second time, the spreadsheet redraws and continues to work perfectly, If, however, the user touches the button a third time, the app crashes. There is no exception information display in the Application Output window. My first thought was that the successive button pushes were using up all the available memory, so I overrode the DidReceiveMemoryWarning method in the view controller and used a breakpoint to confirm that this method was not getting called. My next thought was that the CGBitmapContext was not getting released and looked for a Monotouch equivalent of Objective C's CGContextRelease() function. The closest I could find was the CGBitmapContext instance method Dispose(), which I called, without solving the problem. In order to free up as much memory as possible (in case I was somehow running out of memory without tripping a warning), I tried forcing garbage collection each time I finished using a CGBitmapContext. This made the problem worse. Now the program would crash moments after displaying the spreadsheet the first time. This caused me to wonder whether the Garbage Collector was somehow collecting something necessary to the continued display of graphics on the screen. I would be grateful for any suggestions on further avenues to investigate for the cause of these crashes. I have included the source code for the SpreadsheetView class. The relevant method is DrawSpreadsheet(), which is called when the button is touched. Thank you for your assistance on this matter. Stephen Ashley public class SpreadsheetView : UIView { public ISpreadsheetMessenger spreadsheetMessenger = null; public UIScrollView cellsScrollView = null; public UIImageView cellsImageView = null; public SpreadsheetView(RectangleF frame) : base() { Frame = frame; BackgroundColor = Constants.backgroundBlack; AutosizesSubviews = true; } public void DrawSpreadsheet() { UInt16 RowHeaderWidth = spreadsheetMessenger.RowHeaderWidth; UInt16 RowHeaderHeight = spreadsheetMessenger.RowHeaderHeight; UInt16 RowCount = spreadsheetMessenger.RowCount; UInt16 ColumnHeaderWidth = spreadsheetMessenger.ColumnHeaderWidth; UInt16 ColumnHeaderHeight = spreadsheetMessenger.ColumnHeaderHeight; UInt16 ColumnCount = spreadsheetMessenger.ColumnCount; // Add the corner UIImageView cornerView = new UIImageView(new RectangleF(0f, 0f, RowHeaderWidth, ColumnHeaderHeight)); cornerView.BackgroundColor = Constants.headingColor; CGColorSpace cornerColorSpace = null; CGBitmapContext cornerContext = null; IntPtr buffer = Marshal.AllocHGlobal(RowHeaderWidth * ColumnHeaderHeight * 4); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory."); try { cornerColorSpace = CGColorSpace.CreateDeviceRGB(); cornerContext = new CGBitmapContext (buffer, RowHeaderWidth, ColumnHeaderHeight, 8, 4 * RowHeaderWidth, cornerColorSpace, CGImageAlphaInfo.PremultipliedFirst); cornerContext.SetFillColorWithColor(Constants.headingColor.CGColor); cornerContext.FillRect(new RectangleF(0f, 0f, RowHeaderWidth, ColumnHeaderHeight)); cornerView.Image = UIImage.FromImage(cornerContext.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (cornerContext != null) { cornerContext.Dispose(); cornerContext = null; } if (cornerColorSpace != null) { cornerColorSpace.Dispose(); cornerColorSpace = null; } } cornerView.Image = DrawBottomRightCorner(cornerView.Image); AddSubview(cornerView); // Add the cellsScrollView cellsScrollView = new UIScrollView (new RectangleF(RowHeaderWidth, ColumnHeaderHeight, Frame.Width - RowHeaderWidth, Frame.Height - ColumnHeaderHeight)); cellsScrollView.ContentSize = new SizeF (ColumnCount * ColumnHeaderWidth, RowCount * RowHeaderHeight); Size iContentSize = new Size((int)cellsScrollView.ContentSize.Width, (int)cellsScrollView.ContentSize.Height); cellsScrollView.BackgroundColor = UIColor.Black; AddSubview(cellsScrollView); CGColorSpace colorSpace = null; CGBitmapContext context = null; CGGradient gradient = null; UIImage image = null; int bytesPerRow = 4 * iContentSize.Width; int byteCount = bytesPerRow * iContentSize.Height; buffer = Marshal.AllocHGlobal(byteCount); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory."); try { colorSpace = CGColorSpace.CreateDeviceRGB(); context = new CGBitmapContext (buffer, iContentSize.Width, iContentSize.Height, 8, 4 * iContentSize.Width, colorSpace, CGImageAlphaInfo.PremultipliedFirst); float[] components = new float[] {.75f, .75f, .75f, 1f, .25f, .25f, .25f, 1f}; float[] locations = new float[]{0f, 1f}; gradient = new CGGradient(colorSpace, components, locations); PointF startPoint = new PointF(0f, (float)iContentSize.Height); PointF endPoint = new PointF((float)iContentSize.Width, 0f); context.DrawLinearGradient(gradient, startPoint, endPoint, 0); context.SetLineWidth(Constants.lineWidth); context.BeginPath(); for (UInt16 i = 1; i <= RowCount; i++) { context.MoveTo (0f, iContentSize.Height - i * RowHeaderHeight + (Constants.lineWidth/2)); context.AddLineToPoint((float)iContentSize.Width, iContentSize.Height - i * RowHeaderHeight + (Constants.lineWidth/2)); } for (UInt16 j = 1; j <= ColumnCount; j++) { context.MoveTo((float)j * ColumnHeaderWidth - Constants.lineWidth/2, (float)iContentSize.Height); context.AddLineToPoint((float)j * ColumnHeaderWidth - Constants.lineWidth/2, 0f); } context.StrokePath(); image = UIImage.FromImage(context.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (gradient != null) { gradient.Dispose(); gradient = null; } if (context != null) { context.Dispose(); context = null; } if (colorSpace != null) { colorSpace.Dispose(); colorSpace = null; } // GC.Collect(); //GC.WaitForPendingFinalizers(); } UIImage finalImage = ActivateCell(1, 1, image); finalImage = ActivateCell(0, 0, finalImage); cellsImageView = new UIImageView(finalImage); cellsImageView.Frame = new RectangleF(0f, 0f, iContentSize.Width, iContentSize.Height); cellsScrollView.AddSubview(cellsImageView); } private UIImage ActivateCell(UInt16 column, UInt16 row, UIImage backgroundImage) { UInt16 ColumnHeaderWidth = (UInt16)spreadsheetMessenger.ColumnHeaderWidth; UInt16 RowHeaderHeight = (UInt16)spreadsheetMessenger.RowHeaderHeight; CGColorSpace cellColorSpace = null; CGBitmapContext cellContext = null; UIImage cellImage = null; IntPtr buffer = Marshal.AllocHGlobal(4 * ColumnHeaderWidth * RowHeaderHeight); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory: ActivateCell()"); try { cellColorSpace = CGColorSpace.CreateDeviceRGB(); // Create a bitmap the size of a cell cellContext = new CGBitmapContext (buffer, ColumnHeaderWidth, RowHeaderHeight, 8, 4 * ColumnHeaderWidth, cellColorSpace, CGImageAlphaInfo.PremultipliedFirst); // Paint it white cellContext.SetFillColorWithColor(UIColor.White.CGColor); cellContext.FillRect(new RectangleF(0f, 0f, ColumnHeaderWidth, RowHeaderHeight)); // Convert it to an image cellImage = UIImage.FromImage(cellContext.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (cellContext != null) { cellContext.Dispose(); cellContext = null; } if (cellColorSpace != null) { cellColorSpace.Dispose(); cellColorSpace = null; } // GC.Collect(); //GC.WaitForPendingFinalizers(); } // Draw the border on the cell image cellImage = DrawBottomRightCorner(cellImage); CGColorSpace colorSpace = null; CGBitmapContext context = null; Size iContentSize = new Size((int)backgroundImage.Size.Width, (int)backgroundImage.Size.Height); buffer = Marshal.AllocHGlobal(4 * iContentSize.Width * iContentSize.Height); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory: ActivateCell()."); try { colorSpace = CGColorSpace.CreateDeviceRGB(); // Set up a bitmap context the size of the whole grid context = new CGBitmapContext (buffer, iContentSize.Width, iContentSize.Height, 8, 4 * iContentSize.Width, colorSpace, CGImageAlphaInfo.PremultipliedFirst); // Draw the original grid into the bitmap context.DrawImage(new RectangleF(0f, 0f, iContentSize.Width, iContentSize.Height), backgroundImage.CGImage); // Draw the cell image into the bitmap context.DrawImage(new RectangleF(column * ColumnHeaderWidth, iContentSize.Height - (row + 1) * RowHeaderHeight, ColumnHeaderWidth, RowHeaderHeight), cellImage.CGImage); // Convert the bitmap back to an image backgroundImage = UIImage.FromImage(context.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (context != null) { context.Dispose(); context = null; } if (colorSpace != null) { colorSpace.Dispose(); colorSpace = null; } // GC.Collect(); //GC.WaitForPendingFinalizers(); } return backgroundImage; } private UIImage DrawBottomRightCorner(UIImage image) { int width = (int)image.Size.Width; int height = (int)image.Size.Height; float lineWidth = Constants.lineWidth; CGColorSpace colorSpace = null; CGBitmapContext context = null; UIImage returnImage = null; IntPtr buffer = Marshal.AllocHGlobal(4 * width * height); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory: DrawBottomRightCorner()."); try { colorSpace = CGColorSpace.CreateDeviceRGB(); context = new CGBitmapContext (buffer, width, height, 8, 4 * width, colorSpace, CGImageAlphaInfo.PremultipliedFirst); context.DrawImage(new RectangleF(0f, 0f, width, height), image.CGImage); context.BeginPath(); context.MoveTo(0f, (int)(lineWidth/2f)); context.AddLineToPoint(width - (int)(lineWidth/2f), (int)(lineWidth/2f)); context.AddLineToPoint(width - (int)(lineWidth/2f), height); context.SetLineWidth(Constants.lineWidth); context.SetStrokeColorWithColor(UIColor.Black.CGColor); context.StrokePath(); returnImage = UIImage.FromImage(context.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (context != null){ context.Dispose(); context = null;} if (colorSpace != null){ colorSpace.Dispose(); colorSpace = null;} // GC.Collect(); //GC.WaitForPendingFinalizers(); } return returnImage; } }

    Read the article

  • Core Audio - CARIngBuffer

    - by tech74
    Hi, Im looking at using the CARingBuffer in iPhone SDK 3.1 Developer\Extras\CoreAudio\PublicUtility, however was a little puzzled about some of its methods. Firstly this will only make sense really to anyone who's used this class For example the GetTimebounds,SetTimeBounds, ClipTimeBounds functions what are these actually doing? Also when using it, i get crashes caused by example this method in the main Fetch method - ZeroABL(abl, 0, destStartOffset * mBytesPerFrame); CARingBufferError CARingBuffer::Fetch(AudioBufferList *abl, UInt32 nFrames, SampleTime startRead) { SampleTime endRead = startRead + nFrames; SampleTime startRead0 = startRead; SampleTime endRead0 = endRead; SampleTime size; CARingBufferError err = ClipTimeBounds(startRead, endRead); if (err) return err; size = endRead - startRead; SInt32 destStartOffset = startRead - startRead0; if (destStartOffset 0) { ZeroABL(abl, 0, destStartOffset * mBytesPerFrame); } Here the destStartOffset has become larger than the size of the abl Bufferlist so when a memset is done it exceeds the boundaries of the abl Bufferlist causing the crash. Why hasn't this class got checks in to prevent this.

    Read the article

  • Watin - Watin.Core.Exceptions.ElementNotFoundException

    - by potterosa
    I have code that runs that gives me the error : Could not find a 'INPUT (text password textarea hidden) or TEXTAREA' tag containing attribute name with value ________ (It's testing a website) It says it can't find a What reason could it be that it can't find it? It finds others without an issue on other pages, but this page for some odd reason it baulks? How can that be?

    Read the article

  • NSFetchedResultsController Crashes When Navigating from One UITableViewController to Another

    - by wgpubs
    In my core data model I have a Person entity that has a "to many" relationship a Course entity (I also have an inverse "to one" relationship from Course to Person). Now I have a subclassed UITableViewController that uses a NSFetchedResultsController to display Person objects which works fine. I have this set up so that when you click on a Person it publishes another subclassed UITableViewController that uses a NSFetchedController as well to display the Courses associated to the person. PROBLEM: I get this exception whenever I click on the Person and attempt to display the Course UITableViewController ... "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'keypath name not found in entity <NSSQLEntity Course id=2>'" Any ideas on how to resolve or troubleshoot? The code between the two ViewControllers is almost identical except for the NSFetchedResultsController being configured for "Person" entities in one and "Course" entities in another

    Read the article

  • [cocoa] NSSearchField not working as expected

    - by Vegar
    Hi, I'm trying to follow Marcus Zarra in his book 'Core Data'. In the book, he makes a small sample application, but it doesn't give much help when things don't work out... He starts out by visually designing three entities, and then adding array controllers for each entity to the main nib. Second, he adds a tableview and some other visual components to show data from the array controllers. So far, I have managed to follow, but now he adds a search field to the gui, and binds it to the same array controller as one of the tableviews. Expected behavior would be for the tableview to get filtered when typing in the search field, but nothing happens. How do I find out what's wrong? The relevant parts from the nib is as follow: NSArrayController Recipes - Mode = Entity - Enitity Name = Recipe TableView w/TableColumn - Value Bind To Recipes -- Controller Key = arrangedObjects -- Model Key Path = name Search Field - Predicate Bind To Recipes -- Controller Key = filterPredicate -- Model Key Path = name -- Display name = predicate -- Predicate Format = keyPath contains $value There are no relevant messages in the console. regards, -Vegar

    Read the article

  • How is the presentation layer of a CALayer generated?

    - by KJ
    Hi, I'm having difficulties animating my custom layer property using Core Anmiation. My question is how the presentation of a CALayer is generated. Here is what I have now: @interface MyLayer : CALayer { NSMutableDictionary* customProperties; } @property (nonatomic, copy) NSMutableDictionary* customProperties; @end And when I try to animate the key path "customProperties.roll" using CABasicAnimation and addAnimation:forKey:, it seems that the customProperties variable doesn't get copied from the model layer to the presentation layer, and the customProperties of the presentation layer appears to be nil, failing to update the value for the key "roll". Is there a way to animate values in a dictionary correctly? What is the exact relationship between a model layer and a presentation layer while being animated? Thanks!

    Read the article

  • NSFetchedResultsController when navigating from one UITableViewController to another ...

    - by wgpubs
    In my core data model I have a Person entity that has a "to many" relationship a Course entity (I also have an inverse "to one" relationship from Course to Person). Now I have a subclassed UITableViewController that uses a NSFetchedResultsController to display Person objects which works fine. I have this set up so that when you click on a Person it publishes another subclassed UITableViewController that uses a NSFetchedController as well to display the Courses associated to the person. PROBLEM: I get this exception whenever I click on the Person and attempt to display the Course UITableViewController ... "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'keypath name not found in entity '" Any ideas on how to resolve or troubleshoot? The code between the two ViewControllers is almost identical except for the NSFetchedResultsController being configured for "Person" entities in one and "Course" entities in another

    Read the article

  • How to use walker to replace core function

    - by bellesebastien
    I want to modify the way pages are listed in the navigation, particularly the function el_start from wp-includes/classes.php. I've first modified the classes.php directly and it worked fine butnow I want to revert classes.php and move the modification out of wordpress' internal files. I wrote a walker class that I want to use but I don't know how to use it. I want to replace the current call wp_list_pages() to this: $walker_pages = new Walker_Page_CustomTitle; wp_list_pages(array('walker' => $walker_pages, 'title_li' => '', 'depth' => '1')); I've tried using a filter like so: function wp_list_pages_custom() { $walker_pages = new Walker_Page_CustomTitle; wp_list_pages(array('walker' => $walker_pages, 'title_li' => '', 'depth' => '1')); } add_filter('widget_area_primary_aside', 'wp_list_pages_custom'); But with this filter, the site won't load anymore. The tutorial here says I should put this code in header.php but that just puts my page links in the tag. I hope I'm making sense. Thanks.

    Read the article

< Previous Page | 51 52 53 54 55 56 57 58 59 60 61 62  | Next Page >