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2014/10/15 ¤U¤È 10:13:38
iphone Programming Glossary: safeDelete/Reset all entries in Core Data? http://stackoverflow.com/questions/1077810/delete-reset-all-entries-in-core-data won't be able to persist your changes. Just removing the store and recreating it is both fast and safe and can certainly be done programatically at runtime. Update for iOS5 With the introduction of external..
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage 180 The answer Daniel gave is also correct but it suffers from the problem that it is not thread safe since you're using UIGraphicsBeginImageContext . Since the above code only uses CG functions you're..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone
How to share custom data between iPhone applications? http://stackoverflow.com/questions/220630/how-to-share-custom-data-between-iphone-applications like a data file that both applications can read and write too. As far as I know there isn't a safe way to do this other than storing your data on a remote server. If you need the data accessible without..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 of previous runs of this script # NB this directory is ONLY created by this script it should be safe to delete rm rf CREATING_UNIVERSAL_DIR mkdir CREATING_UNIVERSAL_DIR # echo lipo for current configuration..
http://stackoverflow.com/questions/4445173/when-to-use-nsinteger-vs-int i ... int something something somethingElseThatsAnInt ... I've read been told that NSInteger is a safe way to reference an integer in either a 64 bit or 32 bit environment so why use int at all iphone objective..
Create singleton using GCD's dispatch_once in Objective C http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c can target iOS 4.0 or above Using GCD is it the best way to create singleton in Objective C thread safe id sharedInstance static dispatch_once_t once static id sharedInstance dispatch_once once ^ sharedInstance.. c xcode singleton share improve this question This is a perfectly acceptable and thread safe way to create an instance of your class. It may not technically be a singleton in that there can only..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature something like sharedRFC3339DateFormatter . Be aware however that NSDateFormatter is not thread safe and you have to use locks or @synchronized blocks when you're using the same instance from multiple..
Delete/Reset all entries in Core Data? http://stackoverflow.com/questions/1077810/delete-reset-all-entries-in-core-data need to make sure you retain referential integrity or you won't be able to persist your changes. Just removing the store and recreating it is both fast and safe and can certainly be done programatically at runtime. Update for iOS5 With the introduction of external binary storage allowsExternalBinaryDataStorage or Store..
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage inline double radians double degrees return degrees M_PI 180 The answer Daniel gave is also correct but it suffers from the problem that it is not thread safe since you're using UIGraphicsBeginImageContext . Since the above code only uses CG functions you're all set. I also have a similar function to resize and do proper..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone
How to share custom data between iPhone applications? http://stackoverflow.com/questions/220630/how-to-share-custom-data-between-iphone-applications need to share is persistent. In other words you need something like a data file that both applications can read and write too. As far as I know there isn't a safe way to do this other than storing your data on a remote server. If you need the data accessible without a data connection then you would need to figure out a way..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 build to CREATING_UNIVERSAL_DIR # ... remove the products of previous runs of this script # NB this directory is ONLY created by this script it should be safe to delete rm rf CREATING_UNIVERSAL_DIR mkdir CREATING_UNIVERSAL_DIR # echo lipo for current configuration CONFIGURATION creating output file CREATING_UNIVERSAL_DIR..
http://stackoverflow.com/questions/4445173/when-to-use-nsinteger-vs-int just using int to track a value for int i i something i ... int something something somethingElseThatsAnInt ... I've read been told that NSInteger is a safe way to reference an integer in either a 64 bit or 32 bit environment so why use int at all iphone objective c ios types nsinteger share improve this question..
Create singleton using GCD's dispatch_once in Objective C http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c singleton using GCD's dispatch_once in Objective C If you can target iOS 4.0 or above Using GCD is it the best way to create singleton in Objective C thread safe id sharedInstance static dispatch_once_t once static id sharedInstance dispatch_once once ^ sharedInstance self alloc init return sharedInstance iphone ios objective.. self alloc init return sharedInstance iphone ios objective c xcode singleton share improve this question This is a perfectly acceptable and thread safe way to create an instance of your class. It may not technically be a singleton in that there can only ever be 1 of these objects but as long as you only use the..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature
Delete/Reset all entries in Core Data? http://stackoverflow.com/questions/1077810/delete-reset-all-entries-in-core-data integrity or you won't be able to persist your changes. Just removing the store and recreating it is both fast and safe and can certainly be done programatically at runtime. Update for iOS5 With the introduction of external binary storage allowsExternalBinaryDataStorage..
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage return degrees M_PI 180 The answer Daniel gave is also correct but it suffers from the problem that it is not thread safe since you're using UIGraphicsBeginImageContext . Since the above code only uses CG functions you're all set. I also have..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone
Calculate the size of a folder http://stackoverflow.com/questions/2188469/calculate-the-size-of-a-folder bytes . Am a little unsure of what to go with here 201KB or 130 398 bytes as the actual size. For now I'll go on the safe side and cut my limit in half until I find out what this means exactly... If anyone can add any more information to these..
How to share custom data between iPhone applications? http://stackoverflow.com/questions/220630/how-to-share-custom-data-between-iphone-applications you need something like a data file that both applications can read and write too. As far as I know there isn't a safe way to do this other than storing your data on a remote server. If you need the data accessible without a data connection..
Remove gradient background from UIWebView? http://stackoverflow.com/questions/3009063/remove-gradient-background-from-uiwebview this question Aha yes terminology fail. I wouldn't call that a shadow at all but c'est la vie. Here is my type safe code to achieve the effect. To summarise this will hide any image view children of the scroll view. It's not as vulnerable..
Best way to save data on the iPhone http://stackoverflow.com/questions/307313/best-way-to-save-data-on-the-iphone
iPhone App Localization - English problems? http://stackoverflow.com/questions/3308519/iphone-app-localization-english-problems setting you just set with the code NSUserDefaults standardUserDefaults removeObjectForKey @ AppleLanguages It's safe to remove at this point because all the bundle initialisation has been completed. Your app should now be using a Localization.strings..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 remove the products of previous runs of this script # NB this directory is ONLY created by this script it should be safe to delete rm rf CREATING_UNIVERSAL_DIR mkdir CREATING_UNIVERSAL_DIR # echo lipo for current configuration CONFIGURATION..
http://stackoverflow.com/questions/4445173/when-to-use-nsinteger-vs-int int i i something i ... int something something somethingElseThatsAnInt ... I've read been told that NSInteger is a safe way to reference an integer in either a 64 bit or 32 bit environment so why use int at all iphone objective c ios types..
What are the Dangers of Method Swizzling in Objective C? http://stackoverflow.com/questions/5339276/what-are-the-dangers-of-method-swizzling-in-objective-c are scared of sharp knives because they think they'll cut themselves badly but the truth is that sharp knives are safer . Method swizzling can be used to write better more efficient more maintainable code. It can also be abused and lead to.. each one at a time. Method swizzling is not atomic I have yet to see an implementation of method swizzling that is safe to use concurrently 1 . This is actually not a problem in 95 of cases that you'd want to use method swizzling. Usually you.. covered most issues. Always call the original implementation. If you don't you're probably changing too much to be safe. Possible naming conflicts Naming conflicts are an issue all throughout Cocoa. We frequently prefix class names and method..
Create singleton using GCD's dispatch_once in Objective C http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c Objective C If you can target iOS 4.0 or above Using GCD is it the best way to create singleton in Objective C thread safe id sharedInstance static dispatch_once_t once static id sharedInstance dispatch_once once ^ sharedInstance self alloc init.. iphone ios objective c xcode singleton share improve this question This is a perfectly acceptable and thread safe way to create an instance of your class. It may not technically be a singleton in that there can only ever be 1 of these..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature certain configurations something like sharedRFC3339DateFormatter . Be aware however that NSDateFormatter is not thread safe and you have to use locks or @synchronized blocks when you're using the same instance from multiple threads. share improve..
http://stackoverflow.com/questions/7273014/ios-unique-user-identifier think it's a different person based on the UDID. If you don't need the UDID use CFUUIDCreate to create a unique ID and safe it to the user defaults on first launch use CFUUIDCreateString to convert the UUID to a string first . It will survive backups..
Why do I have to call super -dealloc last, and not first? http://stackoverflow.com/questions/909856/why-do-i-have-to-call-super-dealloc-last-and-not-first not access variables of the superclass anymore because they are released when you call super dealloc . It is always safe to call the superclass in the last line. Also KVO and depended triggered keys can produce side effects if they are depended..
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