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2014/10/15 ¤U¤È 10:15:42
iphone Programming Glossary: variablesHow to use NSzombie in xcode? [duplicate] http://stackoverflow.com/questions/1211923/how-to-use-nszombie-in-xcode know how to enable NSZombie in Xcode 4 xcode nszombie share improve this question Environment variables are now part of the scheme . If you edit the scheme you want to turn on zombies for in the Product menu..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone I defined constants #define RGBA 4 #define RGBA_8_BIT 8 In my UIImage subclass I declared instance variables size_t bytesPerRow size_t byteCount size_t pixelCount CGContextRef context CGColorSpaceRef colorSpace..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention work I've noticed that in a lot of the reference materials out there I see that a lot of the time variables are named _variable in the .h file then are @synthesize'd in the .m file as @synthesize variable _variable.. There is not consensus on this. Some people like to use it for clarity to separate out class variables and as another responder noted to avoid conflict with incoming parameter names. Even in Apple sample.. revealed by the compiler and avoided through more thoughtful naming of parameters or internal variables . 2 even better reason if you use refactor in XCode on an internal class var that is named the same..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults relevant to your own object void encodeWithCoder NSCoder encoder Encode properties other class variables etc encoder encodeObject self.question forKey @ question encoder encodeObject self.categoryName forKey..
How To Make iPhone App compatible with multiple SDK (firmware) versions http://stackoverflow.com/questions/3027120/how-to-make-iphone-app-compatible-with-multiple-sdk-firmware-versions will make my app unusable for anyone on a firmware lower than 4.0. Is there a way to change that variables and the .xib file based on the user's firmware Cheers. iphone iphone sdk 3.0 compatibility ios4 share..
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 false if DEBUG_THIS_SCRIPT true then echo ########### TESTS ############# echo Use the following variables when debugging this script note that they may change on recursions echo BUILD_DIR BUILD_DIR echo BUILD_ROOT.. after 200 lines. Select your Target and in the Run Script Phase you MUST untick Show environment variables in build log if you're using a custom build output directory for XCode4 then XCode puts all your unexpected..
What does an underscore signify in the name of a member variable in Objective-C? [duplicate] http://stackoverflow.com/questions/5659156/what-does-an-underscore-signify-in-the-name-of-a-member-variable-in-objective-c
http://stackoverflow.com/questions/6124109/instance-variables-with-underscore-in-objective-c-2-0-and-renaming-with-synthet variables with underscore in Objective C 2.0 and renaming with @synthetize leads to optimization warnings by the.. Thanks you in advance if you can help me iphone objective c osx static analysis instance variables share improve this question Is never used should be taken literally you only define its value in.. define its value in assignments never use it. This is the same kind of warning you get for local variables if you only define their values and never use it what are they for The static analyzer is thus warning..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the object value that's returned..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app POST to send to Paypal and makes an NSURLRequest. You can fill in the appropriate string format variables. I used HTTP Client to check what I was doing. void sendPayPalRequestPOST perfomingSetMobileCheckout..
Syntax help - Variable as object name [duplicate] http://stackoverflow.com/questions/7940809/syntax-help-variable-as-object-name help Variable as object name duplicate Possible Duplicate create multiple variables based on an int count Objective C Equivalent of PHP's &ldquo Variable Variables&rdquo How would I create..
When do you make an underscore in front of an instance variable? [duplicate] http://stackoverflow.com/questions/837559/when-do-you-make-an-underscore-in-front-of-an-instance-variable objective c cocoa cocoa touch share improve this question A lot of people use this for private variables to differentiate between private variables and public variables within an object. It is a completely.. this question A lot of people use this for private variables to differentiate between private variables and public variables within an object. It is a completely optional way of working. share improve this..
How to use NSzombie in xcode? [duplicate] http://stackoverflow.com/questions/1211923/how-to-use-nszombie-in-xcode can't figure out which object is zombie ing . Does anybody know how to enable NSZombie in Xcode 4 xcode nszombie share improve this question Environment variables are now part of the scheme . If you edit the scheme you want to turn on zombies for in the Product menu select Edit Scheme go to the Run Foo.app stage in the left..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone reference to data . Method 1 Writable Pixel Information I defined constants #define RGBA 4 #define RGBA_8_BIT 8 In my UIImage subclass I declared instance variables size_t bytesPerRow size_t byteCount size_t pixelCount CGContextRef context CGColorSpaceRef colorSpace UInt8 pixelByteData A pointer to an array of RGBA bytes in..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention in front of a variable in a cocoa objective c class work I've noticed that in a lot of the reference materials out there I see that a lot of the time variables are named _variable in the .h file then are @synthesize'd in the .m file as @synthesize variable _variable Why is this done What am I missing Thanks iphone objective.. Thanks iphone objective c share improve this question There is not consensus on this. Some people like to use it for clarity to separate out class variables and as another responder noted to avoid conflict with incoming parameter names. Even in Apple sample code the use is mixed. However I greatly prefer to not use.. autocomplete on Any overlap in names from parameters is quickly revealed by the compiler and avoided through more thoughtful naming of parameters or internal variables . 2 even better reason if you use refactor in XCode on an internal class var that is named the same as the property used to access it the property and synthesize..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults two methods substituting calls to encodeObject with something relevant to your own object void encodeWithCoder NSCoder encoder Encode properties other class variables etc encoder encodeObject self.question forKey @ question encoder encodeObject self.categoryName forKey @ category encoder encodeObject self.subCategoryName forKey..
How To Make iPhone App compatible with multiple SDK (firmware) versions http://stackoverflow.com/questions/3027120/how-to-make-iphone-app-compatible-with-multiple-sdk-firmware-versions iAd in a future update of an app of mine. I assume that this will make my app unusable for anyone on a firmware lower than 4.0. Is there a way to change that variables and the .xib file based on the user's firmware Cheers. iphone iphone sdk 3.0 compatibility ios4 share improve this question Yes you can build with the latest..
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 any future bugs in Xcode ######## # DEBUG_THIS_SCRIPT false if DEBUG_THIS_SCRIPT true then echo ########### TESTS ############# echo Use the following variables when debugging this script note that they may change on recursions echo BUILD_DIR BUILD_DIR echo BUILD_ROOT BUILD_ROOT echo CONFIGURATION_BUILD_DIR CONFIGURATION_BUILD_DIR.. Wallner open CREATING_UNIVERSAL_DIR Apple deletes all output after 200 lines. Select your Target and in the Run Script Phase you MUST untick Show environment variables in build log if you're using a custom build output directory for XCode4 then XCode puts all your unexpected files in the wrong place. Build the project Click on..
What does an underscore signify in the name of a member variable in Objective-C? [duplicate] http://stackoverflow.com/questions/5659156/what-does-an-underscore-signify-in-the-name-of-a-member-variable-in-objective-c
http://stackoverflow.com/questions/6124109/instance-variables-with-underscore-in-objective-c-2-0-and-renaming-with-synthet variables with underscore in Objective C 2.0 and renaming with @synthetize leads to optimization warnings by the 'Analyze' tool of Xcode 4 duplicate Possible Duplicate How.. I'm doing something wrong and have a bad coding practice somewhere. Thanks you in advance if you can help me iphone objective c osx static analysis instance variables share improve this question Is never used should be taken literally you only define its value in assignments never use it. This is the same kind of warning.. question Is never used should be taken literally you only define its value in assignments never use it. This is the same kind of warning you get for local variables if you only define their values and never use it what are they for The static analyzer is thus warning you because typically variables that are never accessed are..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown to ignore the warning but it may be dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the object value that's returned from methodForSelector even though you don't want to..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app heavy API research. Below is a method that creates an HTTP POST to send to Paypal and makes an NSURLRequest. You can fill in the appropriate string format variables. I used HTTP Client to check what I was doing. void sendPayPalRequestPOST perfomingSetMobileCheckout YES recordResults FALSE NSString parameterString NSString stringWithFormat..
Syntax help - Variable as object name [duplicate] http://stackoverflow.com/questions/7940809/syntax-help-variable-as-object-name help Variable as object name duplicate Possible Duplicate create multiple variables based on an int count Objective C Equivalent of PHP's &ldquo Variable Variables&rdquo How would I create and reference an object using a variable as it's name Example..
When do you make an underscore in front of an instance variable? [duplicate] http://stackoverflow.com/questions/837559/when-do-you-make-an-underscore-in-front-of-an-instance-variable
How to use NSzombie in xcode? [duplicate] http://stackoverflow.com/questions/1211923/how-to-use-nszombie-in-xcode ing . Does anybody know how to enable NSZombie in Xcode 4 xcode nszombie share improve this question Environment variables are now part of the scheme . If you edit the scheme you want to turn on zombies for in the Product menu select Edit Scheme..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone Pixel Information I defined constants #define RGBA 4 #define RGBA_8_BIT 8 In my UIImage subclass I declared instance variables size_t bytesPerRow size_t byteCount size_t pixelCount CGContextRef context CGColorSpaceRef colorSpace UInt8 pixelByteData..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention objective c class work I've noticed that in a lot of the reference materials out there I see that a lot of the time variables are named _variable in the .h file then are @synthesize'd in the .m file as @synthesize variable _variable Why is this done.. improve this question There is not consensus on this. Some people like to use it for clarity to separate out class variables and as another responder noted to avoid conflict with incoming parameter names. Even in Apple sample code the use is mixed... parameters is quickly revealed by the compiler and avoided through more thoughtful naming of parameters or internal variables . 2 even better reason if you use refactor in XCode on an internal class var that is named the same as the property used..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults with something relevant to your own object void encodeWithCoder NSCoder encoder Encode properties other class variables etc encoder encodeObject self.question forKey @ question encoder encodeObject self.categoryName forKey @ category encoder..
How To Make iPhone App compatible with multiple SDK (firmware) versions http://stackoverflow.com/questions/3027120/how-to-make-iphone-app-compatible-with-multiple-sdk-firmware-versions I assume that this will make my app unusable for anyone on a firmware lower than 4.0. Is there a way to change that variables and the .xib file based on the user's firmware Cheers. iphone iphone sdk 3.0 compatibility ios4 share improve this question..
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 # DEBUG_THIS_SCRIPT false if DEBUG_THIS_SCRIPT true then echo ########### TESTS ############# echo Use the following variables when debugging this script note that they may change on recursions echo BUILD_DIR BUILD_DIR echo BUILD_ROOT BUILD_ROOT echo.. deletes all output after 200 lines. Select your Target and in the Run Script Phase you MUST untick Show environment variables in build log if you're using a custom build output directory for XCode4 then XCode puts all your unexpected files in the..
What does an underscore signify in the name of a member variable in Objective-C? [duplicate] http://stackoverflow.com/questions/5659156/what-does-an-underscore-signify-in-the-name-of-a-member-variable-in-objective-c
http://stackoverflow.com/questions/6124109/instance-variables-with-underscore-in-objective-c-2-0-and-renaming-with-synthet variables with underscore in Objective C 2.0 and renaming with @synthetize leads to optimization warnings by the 'Analyze' tool of.. coding practice somewhere. Thanks you in advance if you can help me iphone objective c osx static analysis instance variables share improve this question Is never used should be taken literally you only define its value in assignments never use.. literally you only define its value in assignments never use it. This is the same kind of warning you get for local variables if you only define their values and never use it what are they for The static analyzer is thus warning you because typically..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the object value that's returned from methodForSelector..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app that creates an HTTP POST to send to Paypal and makes an NSURLRequest. You can fill in the appropriate string format variables. I used HTTP Client to check what I was doing. void sendPayPalRequestPOST perfomingSetMobileCheckout YES recordResults FALSE..
Syntax help - Variable as object name [duplicate] http://stackoverflow.com/questions/7940809/syntax-help-variable-as-object-name help Variable as object name duplicate Possible Duplicate create multiple variables based on an int count Objective C Equivalent of PHP's &ldquo Variable Variables&rdquo How would I create and reference an..
When do you make an underscore in front of an instance variable? [duplicate] http://stackoverflow.com/questions/837559/when-do-you-make-an-underscore-in-front-of-an-instance-variable know about iphone objective c cocoa cocoa touch share improve this question A lot of people use this for private variables to differentiate between private variables and public variables within an object. It is a completely optional way of working...
How to use NSzombie in xcode? [duplicate] http://stackoverflow.com/questions/1211923/how-to-use-nszombie-in-xcode stage in the left panel and the Arguments tab on the right. You can then add NSZombieEnabled to the Environment Variables section and set the value to YES as you could in Xcode 3. In Xcode 4.1 and above there's also checkbox on the Diagnostics..
Correct way to show downloadable content in UITableView (with ProgressBar etc.) http://stackoverflow.com/questions/12207288/correct-way-to-show-downloadable-content-in-uitableview-with-progressbar-etc can I make sure that the user can download 2 files at once. I'm afraid it causes issues because I use some instance Variables. In a way it should work a bit like downloading from iCloud in the Music App Here is my code UITableViewCell tableView UITableView..
Objective-C/iPhone Memory Management Static Variables http://stackoverflow.com/questions/1606854/objective-c-iphone-memory-management-static-variables C iPhone Memory Management Static Variables I have a static method that creates an instance of the class and puts it in the static variable. I am wondering what the..
Variables/parameters in Sqlite query for Iphone App http://stackoverflow.com/questions/1878425/variables-parameters-in-sqlite-query-for-iphone-app parameters in Sqlite query for Iphone App In my Iphone App I have created this query SELECT FROM visuel where id_visuel..
Xcode debug with iPhone app is slow and laggy http://stackoverflow.com/questions/3226311/xcode-debug-with-iphone-app-is-slow-and-laggy Someone suggested to disable Run Variable View Use Data Formatter in xcode 3.2 previous i guess it is Debug Variables View Enable Data Formatters and it seems to work for me too till now So now I am asking why D UPDATE2 This solved the debugger..
Why my array instance is out of scope? http://stackoverflow.com/questions/4177662/why-my-array-instance-is-out-of-scope What they can be is unreachable which is what happens when you don't have any variables holding the object's pointer. Variables can be out of scope. You can only use a variable within the same scope in which you declared it you can't begin a compound..
How to preserve the index path value in the table view in iPhone? http://stackoverflow.com/questions/4815770/how-to-preserve-the-index-path-value-in-the-table-view-in-iphone Please help me out. Thanks iphone uitableview checkmark share improve this question Variables are unavailable once you reach the end of scope I don't know if they're nil or released I just know you can't use them ...
How to add NSDebug.h and use NSZombie in iPhone SDK http://stackoverflow.com/questions/535060/how-to-add-nsdebug-h-and-use-nszombie-in-iphone-sdk I have read several articles online and I am still unsure of the exact procedure. I know I have to set the Environment Variables which I have done NSZombieEnabled YES NSDebugEnabled YES NSDeallocateZombies NO I think I'm not sure I have to import NSDebug.h...
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers slides http cs193p.stanford.edu downloads 08 NavigationTabBarControllers.pdf Page 16 51 How Not To Share Data Global Variables or singletons This includes your application delegate Direct dependencies make your code less reusable And more difficult..
http://stackoverflow.com/questions/7081245/global-variables-in-xcode Variables in XCode How can I make it so that the user can store a pick number and the application can store that as a global variable...
How to assign a variable inside a block to a variable outside a block? http://stackoverflow.com/questions/7962721/how-to-assign-a-variable-inside-a-block-to-a-variable-outside-a-block
How to debug “message sent to deallocated instance” in Xcode4? http://stackoverflow.com/questions/8298946/how-to-debug-message-sent-to-deallocated-instance-in-xcode4 to deallocated instance&rdquo in Xcode4 I pressed ALT CMD R and activated NSZombieEnabled in Arguments Environment Variables. Additionally I activated it in Diagnostics Memory Management Enable Zombie Objects. However when I built and run at some..
Consume WCF Web Service using Objective-C on iPhone http://stackoverflow.com/questions/982622/consume-wcf-web-service-using-objective-c-on-iphone my results. I know this is not a comprehensive solution so shoot me a message or comment if you require more detail. Variables used NSMutableData webData NSMutableString soapResults NSXMLParser xmlParser BOOL recordResults Web Service Call NSString..
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