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2014/10/15 ¤U¤È 10:12:32
iphone Programming Glossary: performingCheckbox image toggle in UITableViewCell http://stackoverflow.com/questions/1171476/checkbox-image-toggle-in-uitableviewcell I detect taps on the image and handle those differently to didSelectRowAtIndexPath How do I change the image without performing a tableView reloadData See the image below for a sample Thanks iphone cocoa touch uitableview uitableviewcell share improve..
Encrypted NSData to NSString in obj-c? http://stackoverflow.com/questions/1417893/encrypted-nsdata-to-nsstring-in-obj-c on the data then create and return an NSString. It's really just a matter of chaining the two parts together and performing them in reverse on the way out. From my previous answer you can modify encryptString withKey to perform the last step and..
How can my server securely authenticate iPhone in-app purchase? http://stackoverflow.com/questions/1581246/how-can-my-server-securely-authenticate-iphone-in-app-purchase how can the server know that it is really talking with an iPhone that is entitled to the purchase and that Eve is not performing a replay with a dishonestly obtained receipt The receipt may be valid but that doesn't prove that the sender is the entitled..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language list. This will take precedence over the globally set value and be returned to any code in your application that is performing localization. The code for this would look something like NSUserDefaults standardUserDefaults setObject NSArray arrayWithObjects..
Single-Stage vs Two-Stage Animation for iPhone Apps? http://stackoverflow.com/questions/2048781/single-stage-vs-two-stage-animation-for-iphone-apps occurring at the beginning middle and end points of the rotation. However in iPhone OS 3.0 support was added for performing orientation changes in one step. Using a one step orientation change tends to be faster than the older two step process..
Core Data causing app to crash while migrating http://stackoverflow.com/questions/2160848/core-data-causing-app-to-crash-while-migrating fine for most users however I've had 2 crash reports that I don't understand. The crashes appear to all occur while performing automatic inferred migration. My migration options are NSMigratePersistentStoresAutomaticallyOption and NSInferMappingModelAutomaticallyOption..
Orientation in a UIView added to a UIWindow http://stackoverflow.com/questions/2508630/orientation-in-a-uiview-added-to-a-uiwindow using core animation where a user taps a button on a UITableViewCell and I zoom the associated image. The zooming is performing flawlessly what I haven't been able to figure out is why the subview is still in portrait mode even though the device is..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now progress bar. This sample application I created for my class illustrates how to use both NSOperations and queues for performing background work and then updating the UI when done. Also my Molecules application uses background threads for processing..
NSFetchedResultsController custom sort not getting called http://stackoverflow.com/questions/4789782/nsfetchedresultscontroller-custom-sort-not-getting-called sort using the comparator until the managed object model is changed Notes I have tried also turning off caching and or performing a fetch in viewDidLoad but it seems that how many times I fetch does not matter but when. For some reason it only uses my..
How to list only online users on facebook with xmpp framework http://stackoverflow.com/questions/5300912/how-to-list-only-online-users-on-facebook-with-xmpp-framework sd2 release fetchRequest release NSError error nil if fetchedResultsController performFetch error NSLog @ Error performing fetch @ error return fetchedResultsController void controllerDidChangeContent NSFetchedResultsController controller self..
language change only after restart on iphone http://stackoverflow.com/questions/5912018/language-change-only-after-restart-on-iphone done it. This will take precedence over the globally set value and be returned to any code in your application that is performing localization. The code for this would look something like NSUserDefaults standardUserDefaults setObject NSArray arrayWithObjects..
Are the Core Image filters in iOS 5.0 fast enough for realtime video processing? http://stackoverflow.com/questions/6625888/are-the-core-image-filters-in-ios-5-0-fast-enough-for-realtime-video-processing which was too critical of Core Image's performance. The sepia tone filter I was using as a basis of comparison was not performing the same operation as my own so it was a poor benchmark. The performance of Core Image filters also improved significantly..
Rotating the iPhone, and instantiating a new UIViewController? http://stackoverflow.com/questions/730799/rotating-the-iphone-and-instantiating-a-new-uiviewcontroller rotates the iPhone I want to instantiate a new UIViewController automatically upon rotation not clicking a button or performing a similar action and show to the user a view handled by this new UIViewController in landscape orientation. How to do this..
How can I perform facial recogntion on iOS? http://stackoverflow.com/questions/8020842/how-can-i-perform-facial-recogntion-on-ios within an image but I can't find a library or example that matches a face with a person. Does such a means of performing facial recognition not just detection exist for iOS iphone ios opencv face recognition share improve this question ..
How to do animations using images efficiently in iOS http://stackoverflow.com/questions/8112698/how-to-do-animations-using-images-efficiently-in-ios NSArray arrayWithObjects UIImage imageNamed @ img1 UIImage imageNamed @ img2 nil Creating an image view as a layer for performing the animation imgView UIImageView alloc imgView initWithFrame CGRectMake 110 245 100 100 Setting the images for performing.. the animation imgView UIImageView alloc imgView initWithFrame CGRectMake 110 245 100 100 Setting the images for performing animations imgView.animationImages imageArray imgView.animationDuration 8.5 delay for performing the animation imgView.animationRepeatCount.. the images for performing animations imgView.animationImages imageArray imgView.animationDuration 8.5 delay for performing the animation imgView.animationRepeatCount 1 ..and finally adding the animation to the current view self.view addSubview..
http://stackoverflow.com/questions/8224366/unbalanced-calls-to-begin-end-appearance-transitions-warning-when-push-a-view advance iphone ios xcode4 uinavigationcontroller storyboard share improve this question It sounds like you may be performing the segue in viewWillAppear thus generating two viewWillAppear messages without 2 corresponding viewDidAppear messages...
Reducing piracy of iPhone applications http://stackoverflow.com/questions/846309/reducing-piracy-of-iphone-applications Generally we don't have SignerIdentity in any of the App Store applications we build so checking for nil then performing set instructions should make it more difficult for crackers and pirates. I can't take credit for this so please visit How..
iOS background application network access http://stackoverflow.com/questions/9613357/ios-background-application-network-access the Background that actually give you the possibility to end a network process. This can be important if your app is performing some important task such as writing user data to disk or downloading an important file from a network server. Regarding..
Where to determine UIView size http://stackoverflow.com/questions/1103089/where-to-determine-uiview-size has to be used from subclasses' initializers. On the other hand setting the frame twice should not do much harm. Performing a lot of tasks in setFrame is unusual. Layouting is normally done in layoutSubviews and is only performed once. share improve..
Adding unique objects to Core Data http://stackoverflow.com/questions/1236122/adding-unique-objects-to-core-data create the detail it has other properties that will be populated lazily . The problem with this is performance. Performing constant queries to Core Data is slow to the point where adding a list of 150 POI's takes a minute thanks to the multiple..
Detecting Blow through iPhone MIC in Cocos and then Performing animation on an image http://stackoverflow.com/questions/12985461/detecting-blow-through-iphone-mic-in-cocos-and-then-performing-animation-on-an-i Blow through iPhone MIC in Cocos and then Performing animation on an image I am working on an app which is related to the recipes.In this app there is a section where user..
SQL Query for Performing Radius Search based on Latitude Longitude http://stackoverflow.com/questions/1727137/sql-query-for-performing-radius-search-based-on-latitude-longitude Query for Performing Radius Search based on Latitude Longitude We have a restaurant table that has lat long data for each row. We need to write..
http://stackoverflow.com/questions/1852672/best-way-to-change-the-color-view-of-disclosure-indicator-accessory-view-in-a-ta delegate. The other option is to draw a UIImage overriding the drawRect method of CustomContentView utility class. Performing option 1 I can get the things done the apple way. Just give them the view and they do the rest. But I guess adding a new..
Can i pop to Specific ViewController? http://stackoverflow.com/questions/3027559/can-i-pop-to-specific-viewcontroller Second ViewController to Third ViewController Now I want to Pop From Third ViewController to First ViewController.I am Performing This task using the Below Code but i application get's Terminate.Please any body give me some proper Guidelines.I can't..
Why Isn't Core Data Fetching My Data? http://stackoverflow.com/questions/5467193/why-isnt-core-data-fetching-my-data their frequency by Simply deleting the existing store NSFileManager defaultManager removeItemAtURL storeURL error nil Performing automatic lightweight migration by passing the following dictionary as the options parameter NSDictionary dictionaryWithObjectsAndKeys..
Performing iPhone optimization on externally downloaded PNGs http://stackoverflow.com/questions/640909/performing-iphone-optimization-on-externally-downloaded-pngs iPhone optimization on externally downloaded PNGs When a PNG is added to an XCode iPhone project the compiler optimizes..
NSDateComponents - day method returning wrong day http://stackoverflow.com/questions/6885896/nsdatecomponents-day-method-returning-wrong-day current calendar time zone locale settings etc . The more correct way to iterate through days per wwdc11 video Performing Calendar Calculations iTunes link is to add appropriate number of date components to a starting date on each iteration .....
Detect if the user has touched the screen http://stackoverflow.com/questions/9251174/detect-if-the-user-has-touched-the-screen frequency by Simply deleting the existing store NSFileManager defaultManager removeItemAtURL storeURL error nil Performing automatic lightweight migration by passing the following dictionary as the options parameter NSDictionary dictionaryWithObjectsAndKeys..
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