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  • Memory issue regarding UIImageView on IPhone 4.0 / IPad

    - by Sagar Mane
    Hello All, My Application is crashing due to low memory [ Received memory warning level 1 + 2] To trace this I have used Instrument and come with following points Test Enviorment : Single view controller added on Window When I don't use UIImageView Real Memory is used 3.66 MB When I uses UIImageView with Image having size 25 KB : Real Memory is used 4.24 MB. almost 560 KB extra when compare to w/o UIImageView and which keep on adding as I am adding more UIImageview on the view. below is sample code for adding UIImageview which I am refering UIImageView* iSplashImage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Default-Landscape.png"]]; iSplashImage.frame = CGRectMake(0, 0, 320, 480); [self.window addSubview:iSplashImage]; AND dealloc if(iSplashImage) { [iSplashImage release]; iSplashImage = nil; } Issue is this 560 KB is not getting release and after some time application receives low memory warning. Can anyone point out if I am missing something or doing else. As My application uses lots of Images in One session. Thanks in Advance, Sagar

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  • How to enable Cancel button on UI Searchbar iPhone

    - by sandy
    I am using an UI search bar into my iPhone application, I would like enable Cancel button of Search bar at the time of view did load but not able to do so as its gets activated when a user starts editing the search bar. To be more precise I would to achieve the serach functionality that has been provided by Apple in Stock application

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  • Strange crashes on the iPad device with core graphics functions

    - by toastie
    I am getting a lot of strange EXC_BAD_ACCESS crashes on the iPad that only happen on the device and not in the simulator. I am assuming that they are somehow memory related, but I am not sure. They all happen with image context related functions. One strange example is using CGImageCreateWithImageInRect. For example, if i run through a bunch of UIImages and crop them with CGImageCreateWithImageInRect, it will always crash at specific arbitrary sizes. Like, if I crop them all to 200x200, it crashes out after processing 12 images. If i crop them to 210x210, it works no problem. The EXC_BAD_ACCESS happens inside of "memmove" called from "CGBlt_copyBytes". That is all the debugger shows me strangely enough. I can't see the callstack going up to any of my methods. All of this works fine in the simulator! I know this is all very vague, but if anyone has any ideas, they would be greatly appreciated.

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  • How do I send SMS without launching Text application?

    - by Thomas
    Hello all: I am developing a simple application which has to send an SMS message from the app itself instead of launching the native Text app. Here's my action now. What should I change to achieve my desired functionality? -(IBAction)startButtonPressed { NSString *phoneNumber = @"13136296693"; NSString *url = [NSString stringWithFormat: @"sms:%@",phoneNumber]; NSLog(@"Send SMS to: %@ ", url); [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]]; } Thanks! Thomas

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  • Nexus One Android Debugging in Ubuntu 9.10

    - by Doughy
    I can't get Ubuntu 9.10 to recognize the Nexus One as a debug device. I tried following the instructions found here but they are not working: http://alan.lamielle.net/2010/01/22/nexus-one-usb-in-ubuntu-9-10 Anyone know of a link or know how to get the Nexus One to debug correctly in Ubuntu 9.10?

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  • iPhone HTTP Server

    - by Andrew
    Can someone give me simple code to help with creating an HTTP server for the iPhone. Something simple with much documentation would be appreciated. Anything you have please share.

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  • Asynchronous Image loading in certain custom UITableViewCells

    - by Dan
    So, I'm sure that this issue has been brought up before, but I haven't quite seen a solution for my specific problem. What I'm doing is loading a group of custom UITableViewCell's that are drawn using Loren Brichter's solution, each cell has some content, an icon (representing the user) that is asynchronously loaded into it, and a few other things. Eventually, I'm hoping to add support for images. Not every cell has an image, so in the creation of the cell, it determines if an image is required to be loaded and drawn into the cell. My problem is that I don't know how I can do that while keeping the image loaded asynchronously - with not every cell having the need to load an image (like needed with the icon) I'm not sure how to keep it in order when an cell is thrown off screen and re-rendered when the user scrolls over it. Each cell draws it content from an NSArray containing a custom object called FeedItem. All I'm really looking for is some sort of solution or idea to help me because right now I am at a loss. Thanks guys, I will appreciate the help.

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  • What is a good way to animate UIViews inside UITableViewCell after a callback?

    - by erotsppa
    We couldn't find a way to animate UIViews inside a UITableCell as an action from a callback. Suppose in a scenario where you click on a button on the UITableViewCell and it fires off an asynchronous action to download a picture. Suppose further that when the picture is downloaded we want a UIView in the cell to animate the picture to give user a visual feedback that something new is about to be presented. We couldn't find a way to track down the UIVIew to invoke beginAnimation on because the original cell that the user clicked on might now be used for another row due to the nature of cells being reused when you scroll up and down in the table. In other words we can't keep a pointer to that UITableViewCell. We need to find another way to target the cell and animate it if that row is visible and don't animate if the row is scrolled out of range.

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  • how to delete contents from plist programmatically ?

    - by srikanth rongali
    I have a plist file. I want to delete the data from the plist. How can I do it programmatically ? My Plist have an array cells. cells is filled by dictionaries . Each dictionary is filled by string. I used the following way. NSString* plistPath1 = [[NSBundle mainBundle] pathForResource:@"details" ofType:@"plist"]; [cells removeObjectAtIndex:[clickedButtonPath row]]; NSMutableArray *array1 = [[NSMutableArray alloc] initWithCapacity:4]; array1 = cells; [array1 writeToFile:plistPath1 atomically: YES]; But the plist is not taking the changes. Thank you.

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  • Strange error inserting new relationship data in core-data

    - by michael
    My app will allow users to create a personalised list of events from a large list of events. I have a table view which simply displays these events, tapping on one of them takes the user to the event details view, which has a button "add to my events". In this detailed view I own the original event object, retrieved via an NSFetchedResultsController and passed to the detailed view (via a table cell, the same as the core data recipes sample). I have no trouble retrieving/displaying information from this "event". I am then trying to add it to the list of MyEvents represented by a one to many (inverse) relationship: This code: NSManagedObjectContext *context = [event managedObjectContext]; MyEvents *myEvents = (MyEvents *)[NSEntityDescription insertNewObjectForEntityForName:@"MyEvents" inManagedObjectContext:context]; [myEvents addEventObject:event];//ERROR And this code (suggested below): //would this add to or overwrite the "list" i am attempting to maintain NSManagedObjectContext *context = [event managedObjectContext]; MyEvents *myEvents = (MyEvents *)[NSEntityDescription insertNewObjectForEntityForName:@"MyEvents" inManagedObjectContext:context]; NSMutableSet *myEvent = [myEvents mutableSetValueForKey:@"event"]; [myEvent addObject:event]; //ERROR Bot produce (at the line indicated by //ERROR): *** -[NSComparisonPredicate evaluateWithObject:]: message sent to deallocated instance Seems I may have missed something fundamental. I cant glean any more information through the use of debugging tools, with my knowledge of them. 1) Is this a valid way to compile and store an editable list like this? 2) Is there a better way? 3) What could possibly be the deallocated instance in error? -- I have now modified the Event entity to have a to-many relationship called "myEvents" which referrers to itself. I can add Events to this fine, and logging the object shows the correct memory addresses appearing for the relationship after a [event addMyEventObject:event];. The same failure happens right after this however. I am still at a loss to understand what is going wrong. This is the backtrace #0 0x01f753a7 in ___forwarding___ () #1 0x01f516c2 in __forwarding_prep_0___ () #2 0x01c5aa8f in -[NSFetchedResultsController(PrivateMethods) _preprocessUpdatedObjects:insertsInfo:deletesInfo:updatesInfo:sectionsWithDeletes:newSectionNames:treatAsRefreshes:] () #3 0x01c5d63b in -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:] () #4 0x0002e63a in _nsnote_callback () #5 0x01f40005 in _CFXNotificationPostNotification () #6 0x0002bef0 in -[NSNotificationCenter postNotificationName:object:userInfo:] () #7 0x01bbe17d in -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] () #8 0x01c1d763 in -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:] () #9 0x01ba25ea in -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] () #10 0x01bdfb3a in -[NSManagedObjectContext processPendingChanges] () #11 0x01bd0957 in _performRunLoopAction () #12 0x01f4d252 in __CFRunLoopDoObservers () #13 0x01f4c65f in CFRunLoopRunSpecific () #14 0x01f4bc48 in CFRunLoopRunInMode () #15 0x0273878d in GSEventRunModal () #16 0x02738852 in GSEventRun () #17 0x002ba003 in UIApplicationMain () Cheers.

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  • how to use intent from receiver android

    - by ng93
    hi ive got a working sms receiver but when i try to load another class using: Intent intent = new Intent(SMSReceiver.this, SMSNotifier.class); startActivityForResult(intent, 0); i get the error: The constructor Intent(SMSReceiver, Class<SMSNotifier>) is undefined for the first line and: The method startActivityForResult(Intent, int) is undefined for the type SMSReceiver for the second line id really appreciate some advice as to whats going wrong thanks, ng93

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  • NOt able to parse "&"

    - by shishir.bobby
    HI all, my xml consist of words in few different language,latin words etc. i am able to parse these latin characters n all except the fact,that i am not able parse only "&" This is wat i am getting @gdb Entity: line 223: parser error : xmlParseEntityRef: no name Ull always be mine 4 now & 4ever.Ull always be mine 4 u r my treasure.Ull Any hint to overcome this regards shishir

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  • What does get-task-allow do in Xcode?

    - by Mr. Matt
    So when I set up my entitlements in my iPhone app project, I create a new Entitlements.plist, and set the value of get-task-allow to false. But why? What does this key represent? EDIT Note this is related to this question - I found that flipping the value of this key to true allowed me to install the app on my device)

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  • ABAddressBookGetPersonCount(ab) problem

    - by prathumca
    Why the call to ABAddressBookGetPersonCount(ab); is giving the problem? I have around 2000 contacts in my address book. When my app gets started I'm trying to read the entire address book. This works perfectly on simulator but causing crash on IPhone. The crash report is pointing to 9 AppSupport 0x31fbca1e 0x31fb6000 + 27166 // CPRecordStoreGetCountOfInstancesOfClassWhere + 0x7e 10 AddressBook 0x318df668 0x318d5000 + 42600 // ABCGetPersonCountInStore + 0x88 11 AddressBook 0x318ea450 0x318d5000 + 87120 // ABAddressBookGetPersonCount + 0x8 12 MyAddressBook 0x0000ad30 0x1000 + 40240 // -[MyAddressBookController readAB] + 0x2c0 13 MyAddressBook 0x0000a8ce 0x1000 + 39118 // -[MyAddressBookController start] + 0x4a What I'm doing in "readAB"? - (void) readAB { ABAddressBookRef ab = ABAddressBookCreate(); CFArrayRef contacts = ABAddressBookCopyArrayOfAllPeople(ab); CFIndex count = ABAddressBookGetPersonCount(ab); for(int i = 0; i < count; i++) { //doing some thing... } } If you observe the above crash report, it is clearly pointing to CFIndex count = ABAddressBookGetPersonCount(ab);. Whats wrong with this code? I'm sure that this code works perfectly on firmware 3.1.2. But now I upgraded firmware to 3.1.3. Is this upgrade is causing any trouble? Regards, prathumca.

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  • Optimizing UITableView

    - by Daniel Granger
    I have a UITableview made up with a custom cell loaded from a nib. This custom cell has 9 UILabel s and thats all. When scrolling the table on my iPhone the tables scrolling motion is slightly jerky, its not as smooth as other tableviews! (On the simulator it scrolls fine but I guess its using the extra power of my mac) Are there any tips to help optimize this or any tableview or methods to help find the bottleneck. Many Thanks

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  • How to remove NSString Related Memory Leaks?

    - by Rahul Vyas
    in my application this method shows memory leak how do i remove leak? -(void)getOneQuestion:(int)flashcardId categoryID:(int)categoryId { flashCardText = [[NSString alloc] init]; flashCardAnswer=[[NSString alloc] init]; //NSLog(@"%s %d %s", __FILE__, __LINE__, __PRETTY_FUNCTION__, __FUNCTION__); sqlite3 *MyDatabase; sqlite3_stmt *CompiledStatement=nil; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *MyDatabasePath = [documentsDirectory stringByAppendingString:@"/flashCardDatabase.sqlite"]; if(sqlite3_open([MyDatabasePath UTF8String],&MyDatabase) == SQLITE_OK) { sqlite3_prepare_v2(MyDatabase, "select flashCardText,flashCardAnswer,flashCardTotalOption from flashcardquestionInfo where flashCardId=? and categoryId=?", -1, &CompiledStatement, NULL); sqlite3_bind_int(CompiledStatement, 1, flashcardId); sqlite3_bind_int(CompiledStatement, 2, categoryId); while(sqlite3_step(CompiledStatement) == SQLITE_ROW) { self.flashCardText = [NSString stringWithUTF8String:(char *)sqlite3_column_text(CompiledStatement,0)]; self.flashCardAnswer= [NSString stringWithUTF8String:(char *)sqlite3_column_text(CompiledStatement,1)]; flashCardTotalOption=[[NSNumber numberWithInt:sqlite3_column_int(CompiledStatement,2)] intValue]; } sqlite3_reset(CompiledStatement); sqlite3_finalize(CompiledStatement); sqlite3_close(MyDatabase); } } this method also shows leaks.....what's wrong with this method? -(void)getMultipleChoiceAnswer:(int)flashCardId { if(optionsList!=nil) [optionsList removeAllObjects]; else optionsList = [[NSMutableArray alloc] init]; sqlite3 *MyDatabase; sqlite3_stmt *CompiledStatement=nil; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *MyDatabasePath = [documentsDirectory stringByAppendingString:@"/flashCardDatabase.sqlite"]; if(sqlite3_open([MyDatabasePath UTF8String],&MyDatabase) == SQLITE_OK) { sqlite3_prepare_v2(MyDatabase,"select OptionText from flashCardMultipleAnswer where flashCardId=?", -1, &CompiledStatement, NULL); sqlite3_bind_int(CompiledStatement, 1, flashCardId); while(sqlite3_step(CompiledStatement) == SQLITE_ROW) { [optionsList addObject:[NSString stringWithUTF8String:(char *)sqlite3_column_text(CompiledStatement,0)]]; } sqlite3_reset(CompiledStatement); sqlite3_finalize(CompiledStatement); sqlite3_close(MyDatabase); } }

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  • ListAdapter to modify the datasource (which is an arraylist)

    - by dusker
    Hi Everyone, here's a problem that i've run into lately: I have a listview with a custom adapter class, the adapter takes in a listview and populates the listview with elements from it. Now, i'd like to have a button on each row of a listview to remove the item from it. How should i approach this problem? Is there a way to remotely trigger a method in the activity class and call notifydatachanged() method on the adapter to refresh the listview? thanks in advance for your help and some code snippets if possible best regards peter

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  • Push different views from a table.

    - by Tanner
    Hello All, Ive been following a tutorial to implement a search bar ( http://www.iphonesdkarticles.com/2009/01/uitableview-searching-table-view.html ) However I cant seem to push different views. Here is what my didsSelectRowAtIndexPath looks like. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSString *selectedCountry = nil; if(searching) selectedCountry = [copyListOfItems objectAtIndex:indexPath.row]; else { NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section]; NSArray *array = [dictionary objectForKey:@"Countries"]; selectedCountry = [array objectAtIndex:indexPath.row]; } //Initialize the detail view controller and display it. if ([[listOfItems objectAtIndex:indexPath.row] isEqual:@"neon"]){ Neon *abo = [[Neon alloc] initWithNibName:@"Neon" bundle:nil]; //dvController.selectedCountry = selectedCountry; [self.navigationController pushViewController:abo animated:YES]; [abo release]; } } And here is the debuger message when I click on neon: 2010-05-09 08:47:27.516 iTeachU[3821:307] * Terminating app due to uncaught exception 'NSRangeException', reason: ' -[NSMutableArray objectAtIndex:]: index 60 beyond bounds [0 .. 0]' ** Call stack at first throw: terminate called after throwing an instance of 'NSException' Program received signal: “SIGABRT”. If anyone has a way to push views based on the cells text it would be greatly appreciated. Thanks

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  • Is there any sync services library for iphone

    - by Fedrick
    Hi all, i am developing a mobile client to sync images from iphone photo gallery to amazon s3,so is there any sync services libraries that can help me in this regard.. Also is there any library to access the iphone photo gallery,I just wanted to pick all photos, randomly, from the images stored on the device with no user interaction? Thanks in advance.......

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  • First Letter Section Headers with Core Data

    - by Cory Imdieke
    I'm trying to create a list of people sorted in a tableView of sections with the first letter as the title for each section - a la Address Book. I've got it all working, though there is a bit of an issue with the sort order. Here is the way I'm doing it now: NSFetchRequest *request = [[NSFetchRequest alloc] init]; [request setEntity:[NSEntityDescription entityForName:@"Contact" inManagedObjectContext:context]]; NSSortDescriptor *fullName = [[NSSortDescriptor alloc] initWithKey:@"fullName" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:fullName, nil]; [request setSortDescriptors:sortDescriptors]; [fullName release]; [sortDescriptors release]; NSError *error = nil; [resultController release]; resultController = [[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:@"firstLetter" cacheName:nil]; [resultController performFetch:&error]; [request release]; fullName is a standard property, and firstLetter is a transient property which returns - as you'd expect - the first letter of the fullName. 95% of the time, this works perfectly. The problem is the result controller expects these two "lists" (the sorted fullName list and the sorted firstLetter list) to match exactly. If I have 2 contacts like John and Jack, my fullName list would sort these as Jack, John every time but my firstLetter list might sort them as John, Jack sometimes as it's only sorting by the first letter and leaving the rest to chance. When these lists don't match up, I get a blank tableView with 0 items in it. I'm not really sure how I should go about fixing this issue, but it's very frustrating. Has anyone else run into this? What did you guys find out?

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  • NSMutableArray count method show the NSMutableArray is count 0?

    - by Tattat
    This is my init method: -(id)init{ self = [super init]; magicNumber = 8; myMagicArray = [[NSMutableArray alloc] initWithCapacity:(magicNumber*magicNumber)]; NSLog(@"this is the magic Array: %d", [myMagicArray count]); return self; } This is the .h: @interface Magic : NSObject { NSMutableArray *myMagicArray; int magicNumber; } The console shows me that number is 0. instead of 64, wt's happen? I already check out this post: StackOverflow Link: http://stackoverflow.com/questions/633699/nsmutablearray-count-always-returns-zero

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