Search Results

Search found 15685 results on 628 pages for 'iphone sdk3 2'.

Page 421/628 | < Previous Page | 417 418 419 420 421 422 423 424 425 426 427 428  | Next Page >

  • Sorting array containing strings in objective c

    - by jakob
    Hello experts! I have an array named 'names' with strings looking like this: ["name_23_something", "name_25_something", "name_2_something"]; Now I would like to sort this array in ascending order so it looks like this: ["name_25_something", "name_23_something", "name_2_something"]; I guess that should start of with extracting the numbers since I want that the sorting is done by them: for(NSString *name in arr) { NSArray *nameSegments = [name componentsSeparatedByString:@"_"]; NSLog("number: %@", (NSString*)[nameSegments objectAtIndex:1]); } I'm thinking of creating a dictionary with the keys but I'm not sure if that is the correct objective-c way, maybe there some some methods I could use instead? Could you please me with some tips or example code how this sorting should be done in a proper way. Thank you

    Read the article

  • Does Apple's Reachability work with 3G connectivity?

    - by rickharrison
    I am developing an iPad application, and I am trying to figure out the best way to decide if a user can connect to the Internet. If the user has no connectivity, I will load cached data, otherwise I will load new data. I am trying to use Apple's reachability class for this, and I wanted to see if I am doing this correctly. In applicationDidFinishLaunchingWithOptions, I am doing this: [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(reachabilityChanged:) name: kReachabilityChangedNotification object: nil]; Reachability hostReach = [[Reachability reachabilityWithHostName: @"www.apple.com"] retain]; [hostReach startNotifer]; Then my reachabilityChanged: looks like this: - (void)reachabilityChanged:(NSNotification* )note { Reachability *curReach = [note object]; self.internetConnectionStatus = [curReach currentReachabilityStatus]; if (internetConnectionStatus == NotReachable) { [viewController getDataOffline]; } else { if (![[NSUserDefaults standardUserDefaults] objectForKey:kFIRST_LAUNCH]) [viewController getCurrentLocation]; else [viewController getData]; } } Right now, this is working perfectly for WiFi iPads. I just want to make sure that this will work for 3G iPads. Could you please let me know if I am doing this correctly or not?

    Read the article

  • show UIAlertView when In app purchase is in progress

    - by edie
    Hi... I've added an UIAlertView that has UIActivityIndicatior as a subview on my application. This alertView only show when the purchase is in progress. I've put my alert view in this way in my StoreObserver: - (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions { for (SKPaymentTransaction *transaction in transactions) { switch (transaction.transactionState) { case SKPaymentTransactionStatePurchasing: [self stillPurchasing]; // this creates an alertView and shows break; case SKPaymentTransactionStatePurchased: [self completeTransaction:transaction]; break; case SKPaymentTransactionStateFailed: [self failedTransaction:transaction]; break; case SKPaymentTransactionStateRestored: [self restoreTransaction:transaction]; break; default: break; } } } - (void) stillPurchasing { UIAlertView *alert = [[UIAlertView alloc]initWithTitle: @"In App Purchase" message: @"Processing your purchase..." delegate: nil cancelButtonTitle: nil otherButtonTitles: nil]; self.alertView = alert; [alert release]; UIActivityIndicatorView *ind = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle: UIActivityIndicatorViewStyleWhiteLarge]; self.indicator = ind; [ind release]; [self.indicator startAnimating]; [self.alertView addSubview: self.indicator]; [self.alertView show]; } When I tap my the buy button this UIAlertView shows together with my UIActivityIndicator.. But when the transaction completes the alertView still on the top of the view and the Indicator was the only one that was removed. My question was how should I release the alertView? Or where/When should I release it. I've added these command to release my alertView and Indicator on these cases: case SKPaymentTransactionStatePurchased: case SKPaymentTransactionStateFailed: case SKPaymentTransactionStateRestored: [self.indicator stopAnimating]; [self.indicator removeFromSuperview]; [self.alertView release]; [self.indicator release]; I've only added the alertView to show that the purchasing was still in progress. Any suggestion to create any feedback to users will be thankful for me.. Thanks

    Read the article

  • Detecting Touches in an OpenGL rendered scene

    - by Icky
    Hey. I was wondering whether there is a way to detect a touch in an OpenGL rendered scene. What I have i a set of images which are being rendered in my main view. Now if the user touches one of these images (or objects) I would like to know which one was touched - similar to the CGRectContainsPoint(frame, [touch locationInView:self.view] method. Is there an easy way to find out? If there is none, this would also help.

    Read the article

  • something wrong in my program by using GData xmlsupport

    - by ben
    Ld build/Debug-iphonesimulator/newParser.app/newParser normal i386 cd /Users/apple/Desktop/newParser setenv MACOSX_DEPLOYMENT_TARGET 10.5 setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.sdk -L/Users/apple/Desktop/newParser/build/Debug-iphonesimulator -F/Users/apple/Desktop/newParser/build/Debug-iphonesimulator -filelist /Users/apple/Desktop/newParser/build/newParser.build/Debug-iphonesimulator/newParser.build/Objects-normal/i386/newParser.LinkFileList -mmacosx-version-min=10.5 -lxml2 -framework Foundation -framework UIKit -framework CoreGraphics -o /Users/apple/Desktop/newParser/build/Debug-iphonesimulator/newParser.app/newParser Undefined symbols: "_kGDataXMLXPathDefaultNamespacePrefix", referenced from: _kGDataXMLXPathDefaultNamespacePrefix$non_lazy_ptr in GDataXMLNode.o (maybe you meant: _kGDataXMLXPathDefaultNamespacePrefix$non_lazy_ptr) ld: symbol(s) not found collect2: ld returned 1 exit status

    Read the article

  • How to check a character is alphabet or integer.

    - by user133611
    Hi All, In my project i have string suppose NSString* str = @"$ 120.00"; From the above string i am getting every individual character, Now i have to get all integres in the string i.e, $ is not a integer so i dont want that, "1" is a integer i want that like this . How can i do that can any one help me Thank you

    Read the article

  • Static variable for communication among like-typed objects

    - by Dan Ray
    I have a method that asynchronously downloads images. If the images are related to an array of objects (a common use-case in the app I'm building), I want to cache them. The idea is, I pass in an index number (based on the indexPath.row of the table I'm making by way through), and I stash the image in a static NSMutableArray, keyed on the row of the table I'm dealing with. Thusly: @implementation ImageDownloader ... @synthesize cacheIndex; static NSMutableArray *imageCache; -(void)startDownloadWithImageView:(UIImageView *)imageView andImageURL:(NSURL *)url withCacheIndex:(NSInteger)index { self.theImageView = imageView; self.cacheIndex = index; NSLog(@"Called to download %@ for imageview %@", url, self.theImageView); if ([imageCache objectAtIndex:index]) { NSLog(@"We have this image cached--using that instead"); self.theImageView.image = [imageCache objectAtIndex:index]; return; } self.activeDownload = [NSMutableData data]; NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:[NSURLRequest requestWithURL:url] delegate:self]; self.imageConnection = conn; [conn release]; } //build up the incoming data in self.activeDownload with calls to didReceiveData... - (void)connectionDidFinishLoading:(NSURLConnection *)connection { NSLog(@"Finished downloading."); UIImage *image = [[UIImage alloc] initWithData:self.activeDownload]; self.theImageView.image = image; NSLog(@"Caching %@ for %d", self.theImageView.image, self.cacheIndex); [imageCache insertObject:image atIndex:self.cacheIndex]; NSLog(@"Cache now has %d items", [imageCache count]); [image release]; } My index is getting through okay, I can see that by my NSLog output. But even after my insertObject: atIndex: call, [imageCache count] never leaves zero. This is my first foray into static variables, so I presume I'm doing something wrong. (The above code is heavily pruned to show only the main thing of what's going on, so bear that in mind as you look at it.)

    Read the article

  • is this uibutton autoreleased ?

    - by dubbeat
    HI This is just a question to check my sanity really. I'm hunting memory leaks that show up in instruments but not the static analyzer. In one spot the analyzer is pointing to this block of code UIButton *randomButton = [UIButton buttonWithType:UIButtonTypeRoundedRect ]; randomButton.frame = CGRectMake(205, 145, 90, 22); // size and position of button [randomButton setTitle:@"Random" forState:UIControlStateNormal]; randomButton.backgroundColor = [UIColor clearColor]; randomButton.adjustsImageWhenHighlighted = YES; [randomButton addTarget:self action:@selector(getrandom:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:randomButton]; For some reason I thought the above code would auto release the button because I'm not calling init or alloc? If I add [randombutton release] at the bottom of the code my button fails to show. Could somebody describe to me the correct way to release a button from memory that is created in the above way? Or would I be better off making the button a class variable and sticking the release in the dealloc method?

    Read the article

  • Creating a mask from a graphics context

    - by Magic Bullet Dave
    I want to be able to create a greyscale image with no alpha from a png in the app bundle. This works, and I get an image created: // Create graphics context the size of the overlapping rectangle UIGraphicsBeginImageContext(rectangleOfOverlap.size); CGContextRef ctx = UIGraphicsGetCurrentContext(); // More stuff CGContextDrawImage(ctx, drawRect2, [UIImage imageNamed:@"Image 01.png"].CGImage); // Create the new UIImage from the context UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); However the resulting image is 32 bits per pixel and has an alpha channel, so when I use CGCreateImageWithMask it doesn't work. I've tried creating a bitmap context thus: CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray(); CGContextRef ctx =CGBitmapContextCreate(nil, rectangleOfOverlap.size.width, rectangleOfOverlap.size.height, 8, rectangleOfOverlap.size.width , colorSpace, kCGImageAlphaNone); UIGraphicsGetImageFromCurrentImageContext returns zero and the resulting image is not created. Am I doing something dumb here? Any help would be greatly appreciated. Regards Dave

    Read the article

  • renderInContext creating memory that is not promptly released

    - by iworkinprogress
    While debugging in instruments using 'ObjectAlloc' I'm noticing 7megs of memory being allocated for the renderInContext call, but it never is released. When I comment out the renderInContext call this doesn't happen, and future renderInContext calls does not continue to increase the memory allotment. UIGraphicsBeginImageContext(contentHolder.bounds.size); [contentHolder.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); Is there a way to force this memory to be released?

    Read the article

  • UINavigationController (drawRect:)

    - by ludo
    Hi, I created an application with a TabBarController, 4 TabBarItems and every TabBarItem have is own NavigationController file (everything created in IB). I'm using the drawRect function to design my navigationBar: @implementation UINavigationBar (customImage) -(void)drawRect:(CGRect)rect { UIImage *image = [UIImage imageNamed:@"MyImage.png"]; [image drawInRect:CGRectMake(0,0, self.frame.size.width,self.frame.size.height)]; } @end The problem is that the NavigationBar change for every ViewController inside my app, what I want is only draw the NavigationBar for one TabBarItem only and use the default navigationBar for other controller. How to do that? Thanks,

    Read the article

  • Do [sprite stopActionByTag: kTag]; working differently for different CCActions ?

    - by srikanth rongali
    //prog 1 -(void)gameLogic:(ccTime)dt { id actionMove = [CCMoveTo actionWithDuration:1.0 position:ccp(windowSize.width/2-400, actualY)]; [actionMove setTag:6]; [self schedule:@selector(update:)]; [hitBullet runAction:actionMove]; } -(void)update:(ccTime)dt { if ( (CGRectIntersectsRect(hitRect, playerRect)) ) { [[[self getActionByTag:6] retain] autorelease]; [hitBullet stopActionByTag: 6]; } } //prog 2 -(void)gameLogic:(ccTime)dt { id actionMove = [CCMoveTo actionWithDuration:1.0 position:ccp(windowSize.width/2-400, actualY)]; id hitBulletAction = [CCSequence actionWithDuration:(intervalforEnemyshoot)]; id hitBulletSeq = [CCSequence actions: hitBulletAction, actionMove, nil]; [hitBulletSeq setTag:5]; [self schedule:@selector(update:)]; [hitBullet runAction:hitBulletSeq]; } -(void)update:(ccTime)dt { if ( (CGRectIntersectsRect(hitRect, playerRect)) ) { [[[self getActionByTag:5] retain] autorelease]; [hitBullet stopActionByTag: 5]; } } While prog1 is working prog2 is not working ? I think the both are same. But why the two stopActions are working differently in two prog1 and prog2 ? I mean the actions are stopped in prog1 but the actions are not stopping in prog2 ? thank You.

    Read the article

  • Memory allocation in detached NSThread to load an NSDictionary in background?

    - by mobibob
    I am trying to launch a background thread to retrieve XML data from a web service. I developed it synchronously - without threads, so I know that part works. Now I am ready to have a non-blocking service by spawning a thread to wait for the response and parse. I created an NSAutoreleasePool inside the thread and release it at the end of the parsing. The code to spawn and the thread are as follows: Spawn from main-loop code: . . [NSThread detachNewThreadSelector:@selector(spawnRequestThread:) toTarget:self withObject:url]; . . Thread (inside 'self'): -(void) spawnRequestThread: (NSURL*) url { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; parser = [[NSXMLParser alloc] initWithContentsOfURL:url]; [self parseContentsOfResponse]; [parser release]; [pool release]; } The method parseContentsOfResponse fills an NSMutableDictionary with the parsed document contents. I would like to avoid moving the data around a lot and allocate it back in the main-loop that spawned the thread rather than making a copy. First, is that possible, and if not, can I simply pass in an allocated pointer from the main thread and allocate with 'dictionaryWithDictionary' method? That just seems so inefficient. Are there perferred designs?

    Read the article

  • Design pattern to keep track UITableView rows correspondance to underlying data in constant time.

    - by DenNukem
    When my model changes I want to animate changes in UITableView by inserting/deleting rows. For that I need to know the ordinal of the given row (so I can construct NSIndexPath), which I find hard to do in better-than-linear time. For example, consider that I have a list of addressbook entries which are manualy sorted by the user, i.e. there is no ordering "key" that represents the sort order. There is also a corresponding UITableView that shows one row per addressbook entry. When UITableView queries the datasource I query the NSMUtableArray populated with my entries and return required data in constant time for each row. However, if there is a change in underlying model I am getting a notification "Joe Smith, id#123 has been removed". Now I have a dilemma. A naive approach would be to scan the array, determine the index at which Joe Smith is and then ask UITableView to remove that precise row from the view, also removing it form the array. However, the scan will take linear time to finish. Now I could have an NSDictionary which allows me to find Joe Smith in constant time, but that doesn't do me a lot of good because I still need to find his ordinal index within the array in order to instruct UITableView to remove that row, which is again a linear search. I could further decide to store each object's ordinal inside the object itself to make it constant, but it will become outdated after first such update as all subsequent index values will have changed due to removal of an object. So what is the correct design pattern to accurately reflect model changes in the UITableView in costant (or at least logarithmic) time?

    Read the article

  • How to auto-increment reference number persistently when NSManagedObjects created in core-data.

    - by KayKay
    In my application i am using core-data to store information and saving these data to the server using web-connectivity i have to use MySql. Basically what i want to do is to keep track of number of NSManagedObject already created and Whenever i am adding new NSManagedObject, based on that counting it will assign the class a Int_value which will act as primary_key in MySql. For examaple, there are already 10 NSManagedobjects, and when i will add new one it will assign it "11" as primary_key. these value will have to be increasing because there is no deleting of NSManagedObject. From my approach its about static member in applicationDelegate whose initial value can be any integer but should be incremented by one(like auto-increment) everytime new NSManagedObject is created and also it should be persistent. I am not clear how to do this, please give me suggestions. Thanks in advance.

    Read the article

  • Objective C: CoreData and aggregation

    - by Ralf
    Given a CoreData-Entity with an date (days) and an ammount called Transaction. Is it with CoreData possible (and how) to aggregate/group the 'table' (with all Transactions) by Date and calculate the sum of the day in a second column/attribute? (the SQL-Solution would be SELECT date, sum(ammount) FROM transaction GROUP BY date)

    Read the article

  • Detecting when Bluetooth is disabled on iOS5

    - by Non Umemoto
    I'm developing blog speaker app. I wanna pause the audio when bluetooth is disabled like iPod app. I thought it's not possible without using private api after reading this. Check if Bluetooth is Enabled? But, my customer told me that Rhapsody and DI Radio apps both support it. Then I found iOS5 has Core Bluetooth framework. https://developer.apple.com/library/ios/documentation/CoreBluetooth/Reference/CoreBluetooth_Framework/CoreBluetooth_Framework.pdf CBCentralManagerStatePoweredOff status seems like the one. But, the description says this api only supports Bluetooth 4.0 low energy devices. Did anyone try doing the same thing? I want to support current popular bluetooth headsets, or bluetooth enabled steering wheel on the car. I don't know if it's worth trying when it only supports some brand new bluetooth.

    Read the article

  • Efficient method of getting all plist arrays into one array?

    - by cannyboy
    If I have a plist which is structured like this: Root Array Item 0 Dictionary City String New York People Array Item 0 String Steve Item 1 String Paul Item 2 String Fabio Item 3 String David Item 4 String Penny Item 1 Dictionary City String London People Array Item 0 String Linda Item 1 String Rachel Item 2 String Jessica Item 3 String Lou Item 2 Dictionary City String Barcelona People Array Item 0 String Edward Item 1 String Juan Item 2 String Maria Then what is the most efficient way of getting all the names of the people into one big NSArray?

    Read the article

  • Objective C IBOutlets

    - by Alan
    In cases where multiple buttons call an IBOutlet, can the IBOutlet determine which button was pressed? edit: All fixed and wired up. key point: Object ID is not sender tag! Tag is a standalone value on the first page of the attributes. - (IBAction)buttonPressed:(id)sender { switch ( [sender tag] ) { case 109: NSLog(@"Button 1"); break; case 108: NSLog(@"Button 2"); break; } }

    Read the article

  • Adding objects to an NSMutableArray, order seems odd when parsing from an XML file

    - by diatrevolo
    Hello: I am parsing an XML file for two elements: "title" and "noType". Once these are parsed, I am adding them to an object called aMaster, an instance of my own Master class that contains NSString variables. I am then adding these instances to an NSMutableArray on a singleton, in order to call them elsewhere in the program. The problem is that when I call them, they don't seem to be on the same NSMutableArray index... each index contains either the title OR the noType element, when it should be both... can anyone see what I may be doing wrong? Below is the code for the parser. Thanks so much!! #import "XMLParser.h" #import "Values.h" #import "Listing.h" #import "Master.h" @implementation XMLParser @synthesize sharedSingleton, aMaster; - (XMLParser *) initXMLParser { [super init]; sharedSingleton = [Values sharedValues]; aMaster = [[Master init] alloc]; return self; } - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict { aMaster = [[Master alloc] init]; //Extract the attribute here. if ([elementName isEqualToString:@"intro"]) { aMaster.intro = [attributeDict objectForKey:@"enabled"]; } else if ([elementName isEqualToString:@"item"]) { aMaster.item_type = [attributeDict objectForKey:@"type"]; //NSLog(@"Did find item with type %@", [attributeDict objectForKey:@"type"]); //NSLog(@"Reading id value :%@", aMaster.item_type); } else { //NSLog(@"No known elements"); } //NSLog(@"Processing Element: %@", elementName); //HERE } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { if(!currentElementValue) currentElementValue = [[NSMutableString alloc] initWithString:string]; else { [currentElementValue appendString:string];//[tempString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]]; CFStringTrimWhitespace((CFMutableStringRef)currentElementValue); } } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if ([elementName isEqualToString:@"item"]) { [sharedSingleton.master addObject:aMaster]; NSLog(@"Added %@ and %@ to the shared singleton", aMaster.title, aMaster.noType); //Only having one at a time added... don't know why [aMaster release]; aMaster = nil; } else if ([elementName isEqualToString:@"title"]) { [aMaster setValue:currentElementValue forKey:@"title"]; } else if ([elementName isEqualToString:@"noType"]) { [aMaster setValue:currentElementValue forKey:@"noType"]; //NSLog(@"%@ should load into the singleton", aMaster.noType); } NSLog(@"delimiter"); NSLog(@"%@ should load into the singleton", aMaster.title); NSLog(@"%@ should load into the singleton", aMaster.noType); [currentElementValue release]; currentElementValue = nil; } - (void) dealloc { [aMaster release]; [currentElementValue release]; [super dealloc]; } @end

    Read the article

< Previous Page | 417 418 419 420 421 422 423 424 425 426 427 428  | Next Page >