2014/10/15 下午 10:05:11

iphone Programming Glossary: coding

Difference between objectForKey and valueForKey?

http://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey

the documentation and they seemed the same to me. iphone objective c cocoa nsdictionary key value coding share improve this question objectForKey is an NSDictionary method. An NSDictionary is a collection..

IBOutlet and IBAction

http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction

and IBAction What is the purpose of using IBAction and IBOutlet in Objective C coding for the iPhone does it make any difference if I don't use them iphone objective c interface builder..

This class is not key value coding-compliant for the key

http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key

class is not key value coding compliant for the key I'm trying to link a UILabel with an IBOutlet created in my class. Every time.. I build my application it crashes on the label screen with the error this class is not key value coding compliant for the key XXXX . Here is the code in SecondView.h . @interface SecondView UIViewController.. reason ' UIViewController 0x3927310 setValue forUndefinedKey this class is not key value coding compliant for the key string.' It is caused by the Second view controller in MainWindow.xib having a..

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

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

should be done is there a good reason for this style being the preferred one iphone objective c coding style share improve this question Current suggested Objective C 2.0 practice is to use the same..

Can I embed a custom font in an iPhone application?

http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application

No one actually provided an answer that solved the question as asked the solution that involves coding your own UILabel subclass doesn't support word wrap which is an essential feature for me though I guess..

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

c share improve this question Basically it doesn't mean anything to the compiler. It's just a coding practice used on private instance variables. Your code isn't going to break if you don't use it. share..

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

C but I'm still in the beginning of learning. Perhaps 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..

Property vs instance variable in Objective-C [duplicate]

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

How to detect iphone is on silent mode

http://stackoverflow.com/questions/833304/how-to-detect-iphone-is-on-silent-mode

detect iphone is on silent mode I am developing one application. In that I want to detect through coding that is iphone on silent mode or not . I am developing it by using cocoa with objective c. If anyone..

How to write data in plist?

http://stackoverflow.com/questions/905542/how-to-write-data-in-plist

created save.plist in resource folder. I have written some data within that directly without using coding . I am able to read that data but I cant able write through coding into the same save.plist. By using.. that directly without using coding . I am able to read that data but I cant able write through coding into the same save.plist. By using following code I am trying to write the data but it get stored within..

Difference between objectForKey and valueForKey?

http://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey

between objectForKey and valueForKey I looked both up in the documentation and they seemed the same to me. iphone objective c cocoa nsdictionary key value coding share improve this question objectForKey is an NSDictionary method. An NSDictionary is a collection class similar to an NSArray except instead of using indexes..

IBOutlet and IBAction

http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction

and IBAction What is the purpose of using IBAction and IBOutlet in Objective C coding for the iPhone does it make any difference if I don't use them iphone objective c interface builder ibaction iboutlet share improve this question IBAction..

This class is not key value coding-compliant for the key

http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key

class is not key value coding compliant for the key I'm trying to link a UILabel with an IBOutlet created in my class. Every time I build my application it crashes on the label screen with.. a UILabel with an IBOutlet created in my class. Every time I build my application it crashes on the label screen with the error this class is not key value coding compliant for the key XXXX . Here is the code in SecondView.h . @interface SecondView UIViewController IBOutlet UILabel string @property nonatomic retain IBOutlet.. your project. The error you are getting is 'NSUnknownKeyException' reason ' UIViewController 0x3927310 setValue forUndefinedKey this class is not key value coding compliant for the key string.' It is caused by the Second view controller in MainWindow.xib having a class of UIViewController instead of SecondView . Changing..

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

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

my aversion to the underscore because that is the one way it should be done is there a good reason for this style being the preferred one iphone objective c coding style share improve this question Current suggested Objective C 2.0 practice is to use the same name for the ivar as the property. You can optionally assign..

Can I embed a custom font in an iPhone application?

http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application

to the answer with the highest number of votes. Interesting. No one actually provided an answer that solved the question as asked the solution that involves coding your own UILabel subclass doesn't support word wrap which is an essential feature for me though I guess I could extend it to do so. iphone ios cocoa touch fonts..

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

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

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 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..

Property vs instance variable in Objective-C [duplicate]

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

How to detect iphone is on silent mode

http://stackoverflow.com/questions/833304/how-to-detect-iphone-is-on-silent-mode

to detect iphone is on silent mode I am developing one application. In that I want to detect through coding that is iphone on silent mode or not . I am developing it by using cocoa with objective c. If anyone knows it kindly reply. iphone objective c cocoa touch audio..

How to write data in plist?

http://stackoverflow.com/questions/905542/how-to-write-data-in-plist

to write data in plist I have created save.plist in resource folder. I have written some data within that directly without using coding . I am able to read that data but I cant able write through coding into the same save.plist. By using following code I am trying to write the data but it get stored.. save.plist in resource folder. I have written some data within that directly without using coding . I am able to read that data but I cant able write through coding into the same save.plist. By using following code I am trying to write the data but it get stored within my .app plist. The code is here NSString errorDesc nil..

Difference between objectForKey and valueForKey?

http://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey

I looked both up in the documentation and they seemed the same to me. iphone objective c cocoa nsdictionary key value coding share improve this question objectForKey is an NSDictionary method. An NSDictionary is a collection class similar to..

Send mail without MFMailComposeViewController

http://stackoverflow.com/questions/1263412/send-mail-without-mfmailcomposeviewcontroller

Another choice is to send directly from the phone your own smpt server not just a client which is a bit more coding. And if you write your own server the mail you send is more likely to be blocked since your originating IP might not match..

How to make xib compatible with both iphone 5 and iphone 4 devices

http://stackoverflow.com/questions/13275144/how-to-make-xib-compatible-with-both-iphone-5-and-iphone-4-devices

connection inspector you then see all the outlet and method name attach them all the same as in the iphone 4 xib. In coding do something like this to instantiate the view controllers if thisDevice.userInterfaceIdiom UIUserInterfaceIdiomPad NSLog..

IBOutlet and IBAction

http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction

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

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

question The article linked to by MrMage is no longer working. So here is what I've learned in my very short time coding in Objective C nonatomic vs. atomic atomic is the default. Always use nonatomic . I don't know why but the book I read said..

Cocos2d Resources

http://stackoverflow.com/questions/2293457/cocos2d-resources

references available here too http www.cocos2d iphone.org wiki doku.php resources iphone_recommended_reading Happy coding B ADDITION I found these two questions have many great resources too http gamedev.stackexchange.com q 2326 1037 http gamedev.stackexchange.com..

How to change an UILabel/UIFont's letter spacing?

http://stackoverflow.com/questions/2544905/how-to-change-an-uilabel-uifonts-letter-spacing

drawRect CGRect rect CGContextRef context UIGraphicsGetCurrentContext CGContextSelectFont context Arial BoldMT 60 kCGEncodingMacRoman CGContextSetCharacterSpacing context 10 CGContextSetTextDrawingMode context kCGTextFill CGContextSetRGBFillColor.. the character spacing. This should work out the box and pulls font text color etc from the UILabel itself proper coding . You may notice I draw the text twice first with clear color. This is to auto center the text in the label. Whilst this.. code CGContextRef context UIGraphicsGetCurrentContext CGContextSelectFont context self.font.fontName cStringUsingEncoding NSASCIIStringEncoding self.font.pointSize kCGEncodingMacRoman CGContextSetCharacterSpacing context 1 CGContextSetFillColorWithColor..

This class is not key value coding-compliant for the key

http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key

class is not key value coding compliant for the key I'm trying to link a UILabel with an IBOutlet created in my class. Every time I build my application.. my class. Every time I build my application it crashes on the label screen with the error this class is not key value coding compliant for the key XXXX . Here is the code in SecondView.h . @interface SecondView UIViewController IBOutlet UILabel.. is 'NSUnknownKeyException' reason ' UIViewController 0x3927310 setValue forUndefinedKey this class is not key value coding compliant for the key string.' It is caused by the Second view controller in MainWindow.xib having a class of UIViewController..

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

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

is the one way it should be done is there a good reason for this style being the preferred one iphone objective c coding style share improve this question Current suggested Objective C 2.0 practice is to use the same name for the ivar as..

Can I embed a custom font in an iPhone application?

http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application

of votes. Interesting. No one actually provided an answer that solved the question as asked the solution that involves coding your own UILabel subclass doesn't support word wrap which is an essential feature for me though I guess I could extend it..

Animation in OpenGL ES view freezes when UIScrollView is dragged on iPhone

http://stackoverflow.com/questions/4876488/animation-in-opengl-es-view-freezes-when-uiscrollview-is-dragged-on-iphone

4.2 and on iPhone OS 3.1.3 on an iPhone 2G device. Any ideas on what to do to prevent pause of the EAGLView apart from coding my own scroll view iphone opengl es uikit uiscrollview share improve this question Whether CADisplayLink fires during..

iOS: Movement Precision in 3D Space

http://stackoverflow.com/questions/5550453/ios-movement-precision-in-3d-space

and only discoverable by having the phone in the correct position in 3D space. I don't need anyone to lay out some coding just give me a brief understanding if with some hard work this could even be possible. Thanks Derek iphone ios4 gps accelerometer..

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

iphone objective c share improve this question Basically it doesn't mean anything to the compiler. It's just a coding practice used on private instance variables. Your code isn't going to break if you don't use it. share improve this answer..

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

not fresh in Objective C but I'm still in the beginning of learning. Perhaps 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..

Property vs instance variable in Objective-C [duplicate]

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

How to detect iphone is on silent mode

http://stackoverflow.com/questions/833304/how-to-detect-iphone-is-on-silent-mode

How to write data in plist?

http://stackoverflow.com/questions/905542/how-to-write-data-in-plist

in plist I have created save.plist in resource folder. I have written some data within that directly without using coding . I am able to read that data but I cant able write through coding into the same save.plist. By using following code I am.. some data within that directly without using coding . I am able to read that data but I cant able write through coding into the same save.plist. By using following code I am trying to write the data but it get stored within my .app plist...

How to identify CAAnimation within the animationDidStop delegate?

http://stackoverflow.com/questions/1255086/how-to-identify-caanimation-within-the-animationdidstop-delegate

store it in your delegate class. The less code the better. Be sure to check out the Apple Reference on Key Value Pair Coding . Are there better techniques for CAAnimation CATransition identification in the animationDidStop delegate Thanks Batgar..

how to do facebook login in iOS 6?

http://stackoverflow.com/questions/13153307/how-to-do-facebook-login-in-ios-6

Status Bar issue

http://stackoverflow.com/questions/19158325/status-bar-issue

Fastest cross-platform A* implementation?

http://stackoverflow.com/questions/2107601/fastest-cross-platform-a-implementation

alternative algorithms however the question is not Should I roll my own A Joel on Software Not Invented Here Syndrome Coding Horror Don't Reinvent the Wheel Overcoming the Not Invented Here Syndrome c iphone algorithm a star share improve this..

iPhone/Cocoa Coding Standards

http://stackoverflow.com/questions/2455384/iphone-cocoa-coding-standards

Cocoa Coding Standards Are there any generally accepted coding standards naming casting etc that apply specifically to iPhone Cocoa..

What video formats are compatible with the assets library?

http://stackoverflow.com/questions/3257224/what-video-formats-are-compatible-with-the-assets-library

x 1 080 NO NO NO Linear PCM 16 bit little endian signed integer 48000 Hz Stereo L R 35.33 Mbit s 6119419764_hd.mp4 AVC Coding 1 280 x 720 NO YES YES AAC 44100 Hz Stereo L R 2.15 Mbit s 6119419764_site.mp4 AVC Coding 640 x 360 NO YES YES AAC 44100.. Mbit s 6119419764_hd.mp4 AVC Coding 1 280 x 720 NO YES YES AAC 44100 Hz Stereo L R 2.15 Mbit s 6119419764_site.mp4 AVC Coding 640 x 360 NO YES YES AAC 44100 Hz Stereo L R 833.71 kbit s 6119419764_mobile.mp4 AVC Coding 568 x 320 YES YES YES AAC 32000.. s 6119419764_site.mp4 AVC Coding 640 x 360 NO YES YES AAC 44100 Hz Stereo L R 833.71 kbit s 6119419764_mobile.mp4 AVC Coding 568 x 320 YES YES YES AAC 32000 Hz Mono 775.14 kbit s 6121206003_orig.mov Taken with iPhone 3Gs H.264 480 x 360 YES YES..

Directly accessing nested dictionary values in Objective-C

http://stackoverflow.com/questions/4317760/directly-accessing-nested-dictionary-values-in-objective-c

just a series of keys joined with dots. You can use them to retrieve nested values from objects that support Key Value Coding including NSDictionary objects like yours. So in your case this should work result valueForKeyPath @ location.name For more.. like yours. So in your case this should work result valueForKeyPath @ location.name For more detail on Key Value Coding see Apple's Key Value Coding Programming Guide . See also this related StackOverflow question . share improve this answer..

iPhone App Crashing - Error Question

http://stackoverflow.com/questions/46220/iphone-app-crashing-error-question

specific the same thing will happen in regular Cocoa . NSUnknownKeyException is a common error when using Key Value Coding to access a key that the object doesn't have. The properties of most Cocoa objects can be accessing directly @ hello world.. can be accessing directly @ hello world length Objective C 1.0 @ hello world .length Objective C 2.0 Or via Key Value Coding @ hello world valueForKey @ length I would get an NSUnknownKeyException if I used the following line @ hello world valueForKey..

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

the basics 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.. shared across your application. Note that Singleton classes work a little differently in regards to memory management. Coding Techniques Delegation Many objects in the iOS SDK have delegate objects that respond to certain events of the object that..

Codesign error: Certificate identity appearing twice

http://stackoverflow.com/questions/5932522/codesign-error-certificate-identity-appearing-twice

Objective-C get a class property from string

http://stackoverflow.com/questions/6179427/objective-c-get-a-class-property-from-string

by using the dataToGet variable iphone objective c class properties share improve this question The Key Value Coding mechanism allows you to interact with a class's properties using string representations of the property names. So for example..

Locking the Fields in MFMailComposeViewController

http://stackoverflow.com/questions/6284599/locking-the-fields-in-mfmailcomposeviewcontroller

Which initializer(s) to override for UITableViewController subclass

http://stackoverflow.com/questions/743010/which-initializers-to-override-for-uitableviewcontroller-subclass

initWithStyle declared locally initWithNibName bundle inherited from UIViewController initWithCoder from adopting NSCoding protocol You need to override 1 or more of these in your subclass depending on how your subclass gets instantiated. In my..