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2014/10/15 ¤U¤È 10:12:31
iphone Programming Glossary: patternWhere to place the “Core Data Stack” in a Cocoa/Cocoa Touch application http://stackoverflow.com/questions/1267520/where-to-place-the-core-data-stack-in-a-cocoa-cocoa-touch-application view controller to the next as described in Accessing the Core Data Stack . This follows the basic pattern for iPhone all applications you pass data or a model controller from one view controller to the next...
Get to UIViewController from UIView on iPhone? http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone the view controller the recommended way and what Apple does across Cocoa is to use the delegate pattern. An example of how to implement it follows @protocol MyViewDelegate NSObject void viewActionHappened..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c for a property will access the ivar with the same name as the property indicates that's the pattern they expect you to follow. No matter what since objects still have to send messages to themselves to..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers which focus on the importance of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly presentation.. easier to understand if you think about them in the context of the dependency injection design pattern. In a nutshell this means that your controller shouldn't look up the objects it needs to do its job.. controller i.e. pass in the objects it needs via methods . If you follow the dependency injection pattern your controller will be modular and reusable. And if you think about where the Stanford presenters are..
Property vs instance variable in Objective-C [duplicate] http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c for a property will access the ivar with the same name as the property indicates that's the pattern they expect you to follow. No matter what since objects still have to send messages to themselves to..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable to understand how strategies some folks use to distinguish instance vars vs. properties. A common pattern is the following @interface MyClass NSObject NSString _myVar @property nonatomic retain NSString myVar..
Where to place the “Core Data Stack” in a Cocoa/Cocoa Touch application http://stackoverflow.com/questions/1267520/where-to-place-the-core-data-stack-in-a-cocoa-cocoa-touch-application them on a context or a managed object is passed from one view controller to the next as described in Accessing the Core Data Stack . This follows the basic pattern for iPhone all applications you pass data or a model controller from one view controller to the next. The typical role of the singleton as described here is as..
Get to UIViewController from UIView on iPhone? http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone contexts. Should you need the view to interface in a way with the view controller the recommended way and what Apple does across Cocoa is to use the delegate pattern. An example of how to implement it follows @protocol MyViewDelegate NSObject void viewActionHappened @end @interface MyView UIView @property nonatomic assign MyViewDelegate..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c declaration but the fact that by default synthesized accessors for a property will access the ivar with the same name as the property indicates that's the pattern they expect you to follow. No matter what since objects still have to send messages to themselves to access properties it's hard to confuse when you're accessing..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers it together. First I agree with the previous answers which focus on the importance of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly presentation data. Second see page 10 of the Stanford presentation.. best practices mentioned in the Stanford presentation are much easier to understand if you think about them in the context of the dependency injection design pattern. In a nutshell this means that your controller shouldn't look up the objects it needs to do its job e.g. reference a global variable . Instead you should always.. Instead you should always inject those dependencies into the controller i.e. pass in the objects it needs via methods . If you follow the dependency injection pattern your controller will be modular and reusable. And if you think about where the Stanford presenters are coming from i.e. as Apple employees their job is to build..
Property vs instance variable in Objective-C [duplicate] http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c declaration but the fact that by default synthesized accessors for a property will access the ivar with the same name as the property indicates that's the pattern they expect you to follow. No matter what since objects still have to send messages to themselves to access properties it's hard to confuse when you're accessing..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable vs. instance variable I'm trying to understand how strategies some folks use to distinguish instance vars vs. properties. A common pattern is the following @interface MyClass NSObject NSString _myVar @property nonatomic retain NSString myVar @end @implementation MyClass @synthesize myVar _myVar Now..
Where to place the “Core Data Stack” in a Cocoa/Cocoa Touch application http://stackoverflow.com/questions/1267520/where-to-place-the-core-data-stack-in-a-cocoa-cocoa-touch-application is passed from one view controller to the next as described in Accessing the Core Data Stack . This follows the basic pattern for iPhone all applications you pass data or a model controller from one view controller to the next. The typical role of..
Get to UIViewController from UIView on iPhone? http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone in a way with the view controller the recommended way and what Apple does across Cocoa is to use the delegate pattern. An example of how to implement it follows @protocol MyViewDelegate NSObject void viewActionHappened @end @interface MyView..
http://stackoverflow.com/questions/1900352/what-is-nsnotification when the UIApplication object reaches certain states. In many respects it is a specialized one to one Observer pattern. You can read more about it here http stackoverflow.com questions 652460 what is the appdelegate for and how do i know when..
SEL performSelector and arguments http://stackoverflow.com/questions/2716143/sel-performselector-and-arguments inv invoke On a side note your method looks like an init method but does not follow the correct initializer pattern for Objective C. You need to call the super classes initializer and you need to test for a nil result from that call and..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c synthesized accessors for a property will access the ivar with the same name as the property indicates that's the pattern they expect you to follow. No matter what since objects still have to send messages to themselves to access properties it's..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell
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 and lead to horrible bugs. Background As with all design patters if we are fully aware of the consequences of the pattern we are able to make more informed decisions about whether or not to use it. Singletons are a good example of something that's..
Difference between protocol and delegates? http://stackoverflow.com/questions/5431413/difference-between-protocol-and-delegates with this particular variable regardless of what class it is. This is a great way of avoiding the inheritance design pattern and avoids tight coupling. Delegates are a use of the language feature of protocols. The delegation design pattern is a.. pattern and avoids tight coupling. Delegates are a use of the language feature of protocols. The delegation design pattern is a way of designing your code to use protocols where necessary. In the Cocoa frameworks the delegate design pattern is.. pattern is a way of designing your code to use protocols where necessary. In the Cocoa frameworks the delegate design pattern is used to specify an instance of a class which conforms to a particular protocol. This particular protocol specifies methods..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers previous answers which focus on the importance of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly presentation data. Second.. presentation are much easier to understand if you think about them in the context of the dependency injection design pattern. In a nutshell this means that your controller shouldn't look up the objects it needs to do its job e.g. reference a global.. into the controller i.e. pass in the objects it needs via methods . If you follow the dependency injection pattern your controller will be modular and reusable. And if you think about where the Stanford presenters are coming from i.e...
Is it possible to reference a variable with a string and an int? http://stackoverflow.com/questions/6049175/is-it-possible-to-reference-a-variable-with-a-string-and-an-int not in Obj C is it possible iphone objective c string reference int share improve this question This is an anti pattern I call the Poor Man's Array. The better way to do this is to use a proper collection like an array instead of a bunch of..
Property vs instance variable in Objective-C [duplicate] http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c synthesized accessors for a property will access the ivar with the same name as the property indicates that's the pattern they expect you to follow. No matter what since objects still have to send messages to themselves to access properties it's..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable variable I'm trying to understand how strategies some folks use to distinguish instance vars vs. properties. A common pattern is the following @interface MyClass NSObject NSString _myVar @property nonatomic retain NSString myVar @end @implementation..
http://stackoverflow.com/questions/1900352/what-is-nsnotification vs. AppDelegate iphone nsnotification share improve this question Apple has provided an Observer Pattern in the Cocoa library called the NSNotificationCenter. The basic idea is that a listener registers with a broadcaster using..
Pattern for wrapping an Asynchronous JavaScript function to make it synchronous http://stackoverflow.com/questions/214491/pattern-for-wrapping-an-asynchronous-javascript-function-to-make-it-synchronous for wrapping an Asynchronous JavaScript function to make it synchronous I'm working with a JavaScript API where most of..
Trouble using opaque pointers in Objective C++ http://stackoverflow.com/questions/2463970/trouble-using-opaque-pointers-in-objective-c step InMemoryAudioFile audioFilePlayer ADSR_opaque env error expected specifier qualifier list before 'ADSR_opaque' Pattern pattern float loopLengthRatio float volume Is there something simple I'm doing wrong here iphone objective c objective..
How to preserve image transparency when using colorWithPatternImage: http://stackoverflow.com/questions/4209383/how-to-preserve-image-transparency-when-using-colorwithpatternimage to preserve image transparency when using colorWithPatternImage I have an image prepared with transparency like this With two UIviews I configure the background colors as so self.view.backgroundColor.. as so self.view.backgroundColor UIColor groupTableViewBackgroundColor self.dashedView.backgroundColor UIColor colorWithPatternImage UIImage imageNamed @ red_square.png I expect the red square to be repeated over the UIView with transparency preserved..
Implementing Delegate Pattern in Objective-C http://stackoverflow.com/questions/455822/implementing-delegate-pattern-in-objective-c Delegate Pattern in Objective C I am building a class that handles NSURLConnection requests. To allow other classes to use this class I..
What are the key concepts for an iPhone Developer to learn? [closed] http://stackoverflow.com/questions/5677655/what-are-the-key-concepts-for-an-iphone-developer-to-learn of iOS development. There coding patterns techniques and some general tidbits that you should know about. Coding Patterns Key Value Observing KVO Allowing one object to respond to changes of another object's properties by registering the Observer.. with the target object. For more on KVO see Apple's Key Value Observing Programming Guide . Model View Controller Pattern In the Model View Controller Pattern MVC objects generally fit into one of three roles. You have the Model which is at the.. on KVO see Apple's Key Value Observing Programming Guide . Model View Controller Pattern In the Model View Controller Pattern MVC objects generally fit into one of three roles. You have the Model which is at the most basic level your data. Or more..
Applications are expected to have a root view controller at the end of application launch http://stackoverflow.com/questions/7520971/applications-are-expected-to-have-a-root-view-controller-at-the-end-of-applicati application UIApplication application didFinishLaunchingWithOptions NSDictionary launchOptions Set Background Color Pattern self.window.backgroundColor UIColor blackColor self.tabBarController.tabBar.backgroundColor UIColor clearColor self.window.backgroundColor.. self.tabBarController.tabBar.backgroundColor UIColor clearColor self.window.backgroundColor UIColor colorWithPatternImage UIImage imageNamed @ testbg.png Set StatusBar Color UIApplication sharedApplication setStatusBarStyle UIStatusBarStyleBlackTranslucent..
Correct Singleton Pattern Objective C (iOS)? http://stackoverflow.com/questions/7598820/correct-singleton-pattern-objective-c-ios Singleton Pattern Objective C iOS I found some information in the net to create a singleton class using GCD. Thats cool because it's thread.. using the trial and error method and et voila the following came out @implementation MySingleton MARK MARK Singleton Pattern using GCD id allocWithZone NSZone zone return self sharedInstance retain id copyWithZone NSZone zone return self id autorelease..
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