2014/10/15 下午 10:14:00

iphone Programming Glossary: setter

How would I tint an image programatically on the iPhone?

http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone

class needs a UIColor property let's call it overlayColor to hold the blend color and a custom setter that forces a redraw when the color changes. Something like this void setOverlayColor UIColor newColor..

@synthesize vs @dynamic, what are the differences?

http://stackoverflow.com/questions/1160498/synthesize-vs-dynamic-what-are-the-differences

objective c cocoa cocoa touch share improve this question @synthesize will generate getter and setter methods for your property. @dynamic just tells the compiler that the getter and setter methods are implemented.. getter and setter methods for your property. @dynamic just tells the compiler that the getter and setter methods are implemented not by the class itself but somewhere else like the superclass or will be provided..

Is there a documented way to set the iPhone orientation?

http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation

out I would like to force the rotation to be set to portrait. There is an undocumented property setter on UIDevice that does the trick but obviously generates a compiler warning and could disappear with..

@property @synthesize

http://stackoverflow.com/questions/2032826/property-synthesize

in your class header @property nonatomic retain NSString myString @synthesize creates your setter and getter for your property accessor methods Without synthesize you have to write your own setter and.. setter and getter for your property accessor methods Without synthesize you have to write your own setter and getter implemention like getMyString or setMyString capitalize the first character of your property..

iPhone ivar naming convention [duplicate]

http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention

a good indicator of private . My take is that NO class local variable should be accessed without a setter getter property and thus they are ALL private given that why not name them in a way easier to read and..

Why do you use an underscore for an instance variable, but not its corresponding property? [duplicate]

http://stackoverflow.com/questions/2371489/why-do-you-use-an-underscore-for-an-instance-variable-but-not-its-corresponding

share improve this question Reminder The @property directive is equivalent to declaring both a setter and a getter. In the case of level @property CGFloat level can be replaced by CGFloat level void setLevel..

Objective-C - When to use 'self'

http://stackoverflow.com/questions/2385980/objective-c-when-to-use-self

iphone objective c cocoa touch share improve this question Using self causes your class' setter for this variable to be called rather than changing the ivar directly. self.mainViewController aController.. internal variables and so on. In the case where your accessing the frame you're still calling a setter method mainViewController.view.frame UIScreen mainScreen .applicationFrame expands to mainViewController.. In general classes are much less likely to have important code in their getter methods than their setters but it's still possible that accessing directly could break something in a future version of Cocoa..

Prefixing property names with an underscore in Objective C [duplicate]

http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c

numberWithInt 1 Both set the value of bar through either the your custom or the synthesized setter method self setBar numberOne self.bar numberOne Both get the value of bar through your synthesized or..

iVar property, access via self?

http://stackoverflow.com/questions/4088801/ivar-property-access-via-self

property access via self I understand that when accessing setter getter methods for properties I should be using self setThisValue @ a rather than thisValue @ a However.. you should use it rather than accessing the ivar directly. That allows subclasses to override the setter getter and do something different to just fetching the value from the ivar. The only exception is in..

Difference between self.ivar and ivar?

http://stackoverflow.com/questions/4142177/difference-between-self-ivar-and-ivar

between name @ hello and self.name @ hello Thanks EDIT Follow up question How to write my own setter for an ivar i.e. self.ivar ... iphone objective c ios share improve this question self.name uses..

iPhone different between self and normal variable

http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable

specifications given in the @property directive in your .h file. I.e. if you specify retain the setter will retain the variable and if you specify copy it will copy it. The accessors will unless you specify..

Instance variables with underscore in Objective-C 2.0 and renaming with @synthetize leads to optimization warnings by the 'Analyze' tool of Xcode 4 [duplicate]

http://stackoverflow.com/questions/6124109/instance-variables-with-underscore-in-objective-c-2-0-and-renaming-with-synthet

aBar But for the readonly properties that can't work and beside that I'm not sure if using the setter in the class itself is a good practice or not. I'm not fresh in Objective C but I'm still in the beginning..

Property vs instance variable in Objective-C [duplicate]

http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c

How would I tint an image programatically on the iPhone?

http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone

to subclass UIImageView and override the drawRect method. Your class needs a UIColor property let's call it overlayColor to hold the blend color and a custom setter that forces a redraw when the color changes. Something like this void setOverlayColor UIColor newColor if overlayColor overlayColor release overlayColor newColor..

@synthesize vs @dynamic, what are the differences?

http://stackoverflow.com/questions/1160498/synthesize-vs-dynamic-what-are-the-differences

a @property with @dynamic or @synthesize iphone objective c cocoa cocoa touch share improve this question @synthesize will generate getter and setter methods for your property. @dynamic just tells the compiler that the getter and setter methods are implemented not by the class itself but somewhere else like the.. share improve this question @synthesize will generate getter and setter methods for your property. @dynamic just tells the compiler that the getter and setter methods are implemented not by the class itself but somewhere else like the superclass or will be provided at runtime . Uses for @dynamic are e.g. with subclasses..

Is there a documented way to set the iPhone orientation?

http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation

make sense in Landscape mode so as I swapping the views out I would like to force the rotation to be set to portrait. There is an undocumented property setter on UIDevice that does the trick but obviously generates a compiler warning and could disappear with a future revision of the SDK. UIDevice currentDevice setOrientation..

@property @synthesize

http://stackoverflow.com/questions/2032826/property-synthesize

question You asked for simple terms @property declares a property in your class header @property nonatomic retain NSString myString @synthesize creates your setter and getter for your property accessor methods Without synthesize you have to write your own setter and getter implemention like getMyString or setMyString capitalize.. nonatomic retain NSString myString @synthesize creates your setter and getter for your property accessor methods Without synthesize you have to write your own setter and getter implemention like getMyString or setMyString capitalize the first character of your property Sam Just an advice http www.cocoadevcentral.com d learn_objectivec..

iPhone ivar naming convention [duplicate]

http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention

and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable should be accessed without a setter getter property and thus they are ALL private given that why not name them in a way easier to read and use autocomplete on Any overlap in names from parameters..

Why do you use an underscore for an instance variable, but not its corresponding property? [duplicate]

http://stackoverflow.com/questions/2371489/why-do-you-use-an-underscore-for-an-instance-variable-but-not-its-corresponding

explain me.Thanks. iphone objective c cocoa cocoa touch share improve this question Reminder The @property directive is equivalent to declaring both a setter and a getter. In the case of level @property CGFloat level can be replaced by CGFloat level void setLevel CGFloat v Your question Why declare a property named level..

Objective-C - When to use 'self'

http://stackoverflow.com/questions/2385980/objective-c-when-to-use-self

mainViewController is referring to the same instance variable. iphone objective c cocoa touch share improve this question Using self causes your class' setter for this variable to be called rather than changing the ivar directly. self.mainViewController aController is equivalent to self setMainViewController aController.. such as releasing old objects retaining new ones updating internal variables and so on. In the case where your accessing the frame you're still calling a setter method mainViewController.view.frame UIScreen mainScreen .applicationFrame expands to mainViewController view setFrame UIScreen mainScreen applicationFrame Ideally..

Prefixing property names with an underscore in Objective C [duplicate]

http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c

Foo @synthesize bar void baz NSNumber numberOne NSNumber numberWithInt 1 Both set the value of bar through either the your custom or the synthesized setter method self setBar numberOne self.bar numberOne Both get the value of bar through your synthesized or your custom accessor method NSNumber fooBar self bar fooBar..

iVar property, access via self?

http://stackoverflow.com/questions/4088801/ivar-property-access-via-self

Difference between self.ivar and ivar?

http://stackoverflow.com/questions/4142177/difference-between-self-ivar-and-ivar

above as an example. Could someone please explain the difference between name @ hello and self.name @ hello Thanks EDIT Follow up question How to write my own setter for an ivar i.e. self.ivar ... iphone objective c ios share improve this question self.name uses the accessor and or mutator defined by you this is nonatomic..

iPhone different between self and normal variable

http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable

generate accessors for your member variables according to the specifications given in the @property directive in your .h file. I.e. if you specify retain the setter will retain the variable and if you specify copy it will copy it. The accessors will unless you specify otherwise be named propertyName and setPropertyName. Using..

Instance variables with underscore in Objective-C 2.0 and renaming with @synthetize leads to optimization warnings by the 'Analyze' tool of Xcode 4 [duplicate]

http://stackoverflow.com/questions/6124109/instance-variables-with-underscore-in-objective-c-2-0-and-renaming-with-synthet

may be used by category methods Perhaps I should use self.bar aBar But for the readonly properties that can't work and beside that I'm not sure if using the setter in the class itself is a good practice or not. I'm not fresh in Objective C but I'm still in the beginning of learning. Perhaps I'm doing something wrong and have..

Property vs instance variable in Objective-C [duplicate]

http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c

How would I tint an image programatically on the iPhone?

http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone

drawRect method. Your class needs a UIColor property let's call it overlayColor to hold the blend color and a custom setter that forces a redraw when the color changes. Something like this void setOverlayColor UIColor newColor if overlayColor overlayColor..

@synthesize vs @dynamic, what are the differences?

http://stackoverflow.com/questions/1160498/synthesize-vs-dynamic-what-are-the-differences

@synthesize iphone objective c cocoa cocoa touch share improve this question @synthesize will generate getter and setter methods for your property. @dynamic just tells the compiler that the getter and setter methods are implemented not by the.. will generate getter and setter methods for your property. @dynamic just tells the compiler that the getter and setter methods are implemented not by the class itself but somewhere else like the superclass or will be provided at runtime ...

Is there a documented way to set the iPhone orientation?

http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation

I swapping the views out I would like to force the rotation to be set to portrait. There is an undocumented property setter on UIDevice that does the trick but obviously generates a compiler warning and could disappear with a future revision of..

@property @synthesize

http://stackoverflow.com/questions/2032826/property-synthesize

declares a property in your class header @property nonatomic retain NSString myString @synthesize creates your setter and getter for your property accessor methods Without synthesize you have to write your own setter and getter implemention.. creates your setter and getter for your property accessor methods Without synthesize you have to write your own setter and getter implemention like getMyString or setMyString capitalize the first character of your property Sam Just an advice..

iPhone ivar naming convention [duplicate]

http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention

think the _ is a good indicator of private . My take is that NO class local variable should be accessed without a setter getter property and thus they are ALL private given that why not name them in a way easier to read and use autocomplete..

@property and retain, assign, copy, nonatomic in Objective-C

http://stackoverflow.com/questions/2255861/property-and-retain-assign-copy-nonatomic-in-objective-c

BNR iOS Programming book. readwrite vs. readonly readwrite is the default. When you @synthesize both a getter and a setter will be created for you. If you use readonly no setter will be created. Use it for a value you don't want to ever change.. is the default. When you @synthesize both a getter and a setter will be created for you. If you use readonly no setter will be created. Use it for a value you don't want to ever change after the instantiation of the object. retain vs. copy.. want to ever change after the instantiation of the object. retain vs. copy vs. assign assign is the default. In the setter that is created by @synthesize the value will simply be assigned to the attribute. My understanding is that assign should..

Why do you use an underscore for an instance variable, but not its corresponding property? [duplicate]

http://stackoverflow.com/questions/2371489/why-do-you-use-an-underscore-for-an-instance-variable-but-not-its-corresponding

c cocoa cocoa touch share improve this question Reminder The @property directive is equivalent to declaring both a setter and a getter. In the case of level @property CGFloat level can be replaced by CGFloat level void setLevel CGFloat v Your..

Objective-C - When to use 'self'

http://stackoverflow.com/questions/2385980/objective-c-when-to-use-self

same instance variable. iphone objective c cocoa touch share improve this question Using self causes your class' setter for this variable to be called rather than changing the ivar directly. self.mainViewController aController is equivalent.. new ones updating internal variables and so on. In the case where your accessing the frame you're still calling a setter method mainViewController.view.frame UIScreen mainScreen .applicationFrame expands to mainViewController view setFrame UIScreen.. this value too. In general classes are much less likely to have important code in their getter methods than their setters but it's still possible that accessing directly could break something in a future version of Cocoa Touch. share improve..

Prefixing property names with an underscore in Objective C [duplicate]

http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c

numberOne NSNumber numberWithInt 1 Both set the value of bar through either the your custom or the synthesized setter method self setBar numberOne self.bar numberOne Both get the value of bar through your synthesized or your custom accessor..

iVar property, access via self?

http://stackoverflow.com/questions/4088801/ivar-property-access-via-self

property access via self I understand that when accessing setter getter methods for properties I should be using self setThisValue @ a rather than thisValue @ a However with the example.. property for an ivar you should use it rather than accessing the ivar directly. That allows subclasses to override the setter getter and do something different to just fetching the value from the ivar. The only exception is in init methods and dealloc...

Difference between self.ivar and ivar?

http://stackoverflow.com/questions/4142177/difference-between-self-ivar-and-ivar

explain the difference between name @ hello and self.name @ hello Thanks EDIT Follow up question How to write my own setter for an ivar i.e. self.ivar ... iphone objective c ios share improve this question self.name uses the accessor and or..

iPhone different between self and normal variable

http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable

according to the specifications given in the @property directive in your .h file. I.e. if you specify retain the setter will retain the variable and if you specify copy it will copy it. The accessors will unless you specify otherwise be named..

Instance variables with underscore in Objective-C 2.0 and renaming with @synthetize leads to optimization warnings by the 'Analyze' tool of Xcode 4 [duplicate]

http://stackoverflow.com/questions/6124109/instance-variables-with-underscore-in-objective-c-2-0-and-renaming-with-synthet

I should use self.bar aBar But for the readonly properties that can't work and beside that I'm not sure if using the setter in the class itself is a good practice or not. I'm not fresh in Objective C but I'm still in the beginning of learning...

Property vs instance variable in Objective-C [duplicate]

http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c