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2014/10/15 ¤U¤È 10:08:36

iphone Programming Glossary: existence

What is NSConcreteData, and where is it defined?

http://stackoverflow.com/questions/1113811/what-is-nsconcretedata-and-where-is-it-defined

be treated and referred to as an NSData object by your code. At the end of the day the simple answer is ignore the existence of NSConcreteData and treat it like NSData . For more information on class clusters please see the Class Clusters section..

How to detect a jailbroken device? [duplicate]

http://stackoverflow.com/questions/12085504/how-to-detect-a-jailbroken-device

improve this question On the majority of jailbroken devices Cydia is installed so you could simply check for its existence. RichardJ.Ross posted an answer to a similar question that was relevant but he was told that his answer does not work for..

iphone app send email

http://stackoverflow.com/questions/1494626/iphone-app-send-email

2.0 or later The MFMailComposeViewController class is only available in iPhone OS 3.0 or later. So we must verify the existence of the above class and provide a workaround for devices running earlier versions of the iPhone OS. We display an email composition..

How to preserve iPhone application state before terminating the application?

http://stackoverflow.com/questions/1811696/how-to-preserve-iphone-application-state-before-terminating-the-application

to store the selected tab index. Then in your applicationDidFinishLaunching implementation you'll check for the existence of that NSUserDefaults key and set the UITabBarController's selected index to the stored value if it exists. If you want..

How to insert data into a SQLite database in iPhone

http://stackoverflow.com/questions/2184861/how-to-insert-data-into-a-sqlite-database-in-iphone

I have two methods void createEditableCopyOfDatabaseIfNeeded NSLog @ Creating editable copy of database First test for existence. BOOL success NSFileManager fileManager NSFileManager defaultManager NSError error NSArray paths NSSearchPathForDirectoriesInDomains..

iPhone: How to Pass Data Between Several Viewcontrollers in a Tabbar App

http://stackoverflow.com/questions/2363777/iphone-how-to-pass-data-between-several-viewcontrollers-in-a-tabbar-app

should have access to the internal data of another controller. The only reason a view controllers needs to know of the existence of another controller is if it has to trigger the loading of that other controller. The quick and dirty way to create a..

NSNumber >= 13 won't retain. Everything else will

http://stackoverflow.com/questions/2533355/nsnumber-13-wont-retain-everything-else-will

management after all It's just that the fact that numbers less than 13 are likely references to numbers already in existence that's saving your bacon in those cases. I suggest you post more code so that we can track down that specific problem. And..

how to connect with sqlite in iphone?

http://stackoverflow.com/questions/2720288/how-to-connect-with-sqlite-in-iphone

void createEditableCopyOfDatabaseIfNeeded NSLog @ Creating editable copy of database First test for existence. BOOL success NSFileManager fileManager NSFileManager defaultManager NSError error NSArray paths NSSearchPathForDirectoriesInDomains..

SQLite3 database doesn't actually insert data - iPhone

http://stackoverflow.com/questions/2785211/sqlite3-database-doesnt-actually-insert-data-iphone

directory path. Here's a snippet from my app Snap it Notes BOOL createEditableCopyOfDatabaseIfNeeded First test for existence. BOOL success BOOL newInstallation NSFileManager fileManager NSFileManager alloc init NSError error NSArray paths NSSearchPathForDirectoriesInDomains..

API to determine whether running on iPhone or iPad

http://stackoverflow.com/questions/2884391/api-to-determine-whether-running-on-iphone-or-ipad

are running on an iPhone or an iPad One way I can think of would be to use UIDevice currentDevice model And detect the existence of the string @ iPad which seems a bit fragile. In the 3.2 SDK I see that UIDevice also has a property which is really what.. work for pre 3.2 obviously UIDevice currentDevice userInterfaceIdiom Are there other ways than checking for the existence of @ iPad for a universal app iphone objective c cocoa touch ipad uidevice share improve this question Checkout UI_USER_INTERFACE_IDIOM..

How to declare instance variables and methods not visible or usable outside of the class instance?

http://stackoverflow.com/questions/5826345/how-to-declare-instance-variables-and-methods-not-visible-or-usable-outside-of-t

that all need access to this information. If that ivar is declared conventionally in the header under @interface its existence is publicly advertised and it is usable by anyone creating an instance of the class. The ideal scenario would be that this..

Saving SecKeyRef device generated public/private key pair on disk

http://stackoverflow.com/questions/5988735/saving-seckeyref-device-generated-public-private-key-pair-on-disk

ASN.1 or base 64 I just need to figure out how to pull the key out of a SecKeyRef . I'm also well aware of the non existence of OS X's SecKeychainItemExport . iphone ios security cryptography share improve this question Ah found the answer..

What causes “Missed Method” in this code?

http://stackoverflow.com/questions/6323244/what-causes-missed-method-in-this-code

function I would say that it is an helper function that wraps a call to a selector by preceding it with a check of existence of that selector. Instead of checking each time and the performing the selector you call the helper function that will do..

Where would you place your SQLite database file in an iPhone app?

http://stackoverflow.com/questions/717108/where-would-you-place-your-sqlite-database-file-in-an-iphone-app

default database in the application Documents directory. void createEditableCopyOfDatabaseIfNeeded First test for existence. BOOL success NSFileManager fileManager NSFileManager defaultManager NSError error NSArray paths NSSearchPathForDirectoriesInDomains..

iOS 5 does not allow to store downloaded data in Documents directory?

http://stackoverflow.com/questions/8209406/ios-5-does-not-allow-to-store-downloaded-data-in-documents-directory

the logic of retrieval also since it is considered that if record is present in database there is no need change the existence of the file and it directly opens it when user clicks on the magazine. Kindly guide me on this issue. Thanks in advance...

getting data from plist to NSMutableArray and writing the NSMutableArray to same plist iPhone

http://stackoverflow.com/questions/9193363/getting-data-from-plist-to-nsmutablearray-and-writing-the-nsmutablearray-to-same

you need to copy it to the documents directory. This is done like so void createEditableCopyOfIfNeeded First test for existence. BOOL success NSFileManager fileManager NSFileManager defaultManager NSError error NSArray paths NSSearchPathForDirectoriesInDomains..

ViewController = _ViewController meaning [duplicate]

http://stackoverflow.com/questions/9235556/viewcontroller-viewcontroller-meaning

Thanks iphone objective c xcode share improve this question More or less. These lines in the .h declare the existence of two public variables called window and controller @property strong nonatomic UIWindow window @property strong nonatomic.. strong nonatomic UIWindow window @property strong nonatomic ViewController controller But these lines only declare the existence of the variables they don't actually create them. It's up to the class to implement these however it wants they could be..