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2014/10/15 ¤U¤È 10:03:42
iphone Programming Glossary: anywayJavascript for “Add to Home Screen” on iPhone? http://stackoverflow.com/questions/1141979/javascript-for-add-to-home-screen-on-iphone including ones on the home screen is with the builtin UI and that Apples does not provide anyway to do this from scripts within a page. In fact I am pretty sure there is no mechanism for doing this..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc Could I not just relase everything in dealloc If the view did unload wouldn't dealloc be called anyway iphone objective c ios cocoa touch memory management share improve this question In addition to..
http://stackoverflow.com/questions/1509547/uiview-with-rounded-corners Signing In . This subview has corners which aren't rounded . How can I make them round Is there anyway to do it using IB iphone objective c cocoa touch share improve this question Try this #import QuartzCore..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received access errors when running on the device. The best way to track these things down and a good idea anyway even if there are no apparent problems is to run the app in the Instruments tool especially with the..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone node.view.largeImage if thumb blah blah Thats what I learned while trying to get this working anyway. iOS 5 update When the result block fires seems to be a bit slower with iOS5 maybe single core devices..
Can we retrieve the applications currently running in iPhone and iPad http://stackoverflow.com/questions/4312613/can-we-retrieve-the-applications-currently-running-in-iphone-and-ipad ids may be you can figure out which ones are system processes and which one are 3rd party apps but anyway I don't believe you can use it in application for appstore. code taken from here NSArray runningProcesses..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable setters. The accessors have got the self. prefix. You shouldn't access the variables directly anyway. Your sample code doesn't work as it should be _myVar some_other_object _myVar is the ivar not myVar...
Testing CoreLocation on iPhone Simulator http://stackoverflow.com/questions/802156/testing-corelocation-on-iphone-simulator and even define routes. See http developer.apple.com for more details. Legacy Question Is there anyway to test CoreLocation on the iPhone Simulator All I require is to be able to set the location myself..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons no GC runtime cost. The compiler inserts retains and releases in all the places you should have anyway. But it's smarter than you and can optimize out the ones that aren't actually needed just like it can..
How to use NSURLConnection to connect with SSL for an untrusted cert? http://stackoverflow.com/questions/933331/how-to-use-nsurlconnection-to-connect-with-ssl-for-an-untrusted-cert UserInfo 0xd29930 untrusted server certificate . Is there a way to set it to accept connections anyway just like in a browser you can press accept or a way to bypass it iphone ssl https share improve..
Javascript for “Add to Home Screen” on iPhone? http://stackoverflow.com/questions/1141979/javascript-for-add-to-home-screen-on-iphone this question The only way to add any book marks in MobileSafari including ones on the home screen is with the builtin UI and that Apples does not provide anyway to do this from scripts within a page. In fact I am pretty sure there is no mechanism for doing this on the desktop version of Safari either. share improve this..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc than in dealloc What is the void viewDidUnload is good for Could I not just relase everything in dealloc If the view did unload wouldn't dealloc be called anyway iphone objective c ios cocoa touch memory management share improve this question In addition to what has already been indicated I wanted to elaborate more..
http://stackoverflow.com/questions/1509547/uiview-with-rounded-corners has a subview which has a UIActivityView and a UILabel saying Signing In . This subview has corners which aren't rounded . How can I make them round Is there anyway to do it using IB iphone objective c cocoa touch share improve this question Try this #import QuartzCore QuartzCore.h ... view.layer.cornerRadius 5 view.layer.masksToBounds..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone suitable to your use. node.view findLargeImage UIImage thumb node.view.largeImage if thumb blah blah Thats what I learned while trying to get this working anyway. iOS 5 update When the result block fires seems to be a bit slower with iOS5 maybe single core devices so I couldnt rely on the image to be available directly after..
Can we retrieve the applications currently running in iPhone and iPad http://stackoverflow.com/questions/4312613/can-we-retrieve-the-applications-currently-running-in-iphone-and-ipad You can get a list of running processes and from process ids may be you can figure out which ones are system processes and which one are 3rd party apps but anyway I don't believe you can use it in application for appstore. code taken from here NSArray runningProcesses int mib 4 CTL_KERN KERN_PROC KERN_PROC_ALL 0 size_t miblen..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable value It's easy now to distinguish between ivars and getters setters. The accessors have got the self. prefix. You shouldn't access the variables directly anyway. Your sample code doesn't work as it should be _myVar some_other_object _myVar is the ivar not myVar. self.myVar some_other_object works too uses the accessors..
Testing CoreLocation on iPhone Simulator http://stackoverflow.com/questions/802156/testing-corelocation-on-iphone-simulator Xcode 4.1 is is now possible to test location in the simulator and even define routes. See http developer.apple.com for more details. Legacy Question Is there anyway to test CoreLocation on the iPhone Simulator All I require is to be able to set the location myself and have CoreLocation return it. iphone objective c cocoa touch..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons than your old code. It is not garbage collection. It has no GC runtime cost. The compiler inserts retains and releases in all the places you should have anyway. But it's smarter than you and can optimize out the ones that aren't actually needed just like it can unroll loops eliminate temporary variables inline functions..
How to use NSURLConnection to connect with SSL for an untrusted cert? http://stackoverflow.com/questions/933331/how-to-use-nsurlconnection-to-connect-with-ssl-for-an-untrusted-cert is a self signed one Error Domain NSURLErrorDomain Code 1202 UserInfo 0xd29930 untrusted server certificate . Is there a way to set it to accept connections anyway just like in a browser you can press accept or a way to bypass it iphone ssl https share improve this question There is a supported API for accomplishing this..
Javascript for “Add to Home Screen” on iPhone? http://stackoverflow.com/questions/1141979/javascript-for-add-to-home-screen-on-iphone book marks in MobileSafari including ones on the home screen is with the builtin UI and that Apples does not provide anyway to do this from scripts within a page. In fact I am pretty sure there is no mechanism for doing this on the desktop version..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc is good for Could I not just relase everything in dealloc If the view did unload wouldn't dealloc be called anyway iphone objective c ios cocoa touch memory management share improve this question In addition to what has already been..
http://stackoverflow.com/questions/1509547/uiview-with-rounded-corners and a UILabel saying Signing In . This subview has corners which aren't rounded . How can I make them round Is there anyway to do it using IB iphone objective c cocoa touch share improve this question Try this #import QuartzCore QuartzCore.h..
Re-Apply currency formatting to a UITextField on a change event http://stackoverflow.com/questions/2388448/re-apply-currency-formatting-to-a-uitextfield-on-a-change-event the textfield on user input but you'll have to figure out the localization yourself that part should be easy enough anyway. void viewDidLoad super viewDidLoad setup text field ... #define PADDING 10.0f const CGRect bounds self.view.bounds CGFloat..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received and show up as bad access errors when running on the device. The best way to track these things down and a good idea anyway even if there are no apparent problems is to run the app in the Instruments tool especially with the Leaks option. share..
Accessing iPhone WiFi Information via SDK http://stackoverflow.com/questions/351954/accessing-iphone-wifi-information-via-sdk allow these private API calls in apps which is preventing him from updating WiFinder. But if you want to use them anyway some kind folks have posted a list of discovered Apple80211 functions to google code . It looks like Apple80211GetInfoCopy..
How can I find out if the iPhone user currently has a passcode set and encryption enabled? http://stackoverflow.com/questions/3806455/how-can-i-find-out-if-the-iphone-user-currently-has-a-passcode-set-and-encryptio 4 iPhones and then exit the application if they do not have a passcode and data protection enabled. I can't figure out anyway to find out the state of these settings though. All of the APIs I've found such as protectedDataAvailable in UIApplication..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone UIImage thumb node.view.largeImage if thumb blah blah Thats what I learned while trying to get this working anyway. iOS 5 update When the result block fires seems to be a bit slower with iOS5 maybe single core devices so I couldnt rely..
How should I store UIImages within my Core Data database? http://stackoverflow.com/questions/3908910/how-should-i-store-uiimages-within-my-core-data-database a few lines of code but for UIImages I am unsure how to do it without writing a lot of code. I was wondering is there anyway to do this easily or if there isn't what's the best way to achieve this with the least amount of effort. Also is it okay..
Can we retrieve the applications currently running in iPhone and iPad http://stackoverflow.com/questions/4312613/can-we-retrieve-the-applications-currently-running-in-iphone-and-ipad and from process ids may be you can figure out which ones are system processes and which one are 3rd party apps but anyway I don't believe you can use it in application for appstore. code taken from here NSArray runningProcesses int mib 4 CTL_KERN..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion mat.m22 mat.m32 0 mat.m13 mat.m23 mat.m33 0 0 0 0 1 glMultMatrixf rotMat This works really well. More problems arise anyway when I try to find the displacement in space during an acceleration. The Apple Teapot example with Core Motion just adds..
What does @synthesize window=_window do? http://stackoverflow.com/questions/5170631/what-does-synthesize-window-window-do NSString searchText Is it the equivalent of self.searchBar rather than searchBar or are those two identical anyway iphone objective c share improve this question Your properties almost always have a backing variable. What @synthesize..
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 happen if my_setFrame was defined somewhere else This problem isn't unique to swizzling but we can work around it anyway. The workaround has an added benefit of addressing other pitfalls as well. Here's what we do instead @implementation NSView..
Why am I having to manually set my view's frame in viewDidLoad? http://stackoverflow.com/questions/6757018/why-am-i-having-to-manually-set-my-views-frame-in-viewdidload
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable ivars and getters setters. The accessors have got the self. prefix. You shouldn't access the variables directly anyway. Your sample code doesn't work as it should be _myVar some_other_object _myVar is the ivar not myVar. self.myVar some_other_object..
Testing CoreLocation on iPhone Simulator http://stackoverflow.com/questions/802156/testing-corelocation-on-iphone-simulator in the simulator and even define routes. See http developer.apple.com for more details. Legacy Question Is there anyway to test CoreLocation on the iPhone Simulator All I require is to be able to set the location myself and have CoreLocation..
iPhone UIWebView local resources using Javascript and handling onorientationChange http://stackoverflow.com/questions/843820/iphone-uiwebview-local-resources-using-javascript-and-handling-onorientationchan id content_flipped p This doesn't work yet but there is a chance apple will enable it at some point so I've put it in anyway. You would be holding your phone upside down if it did work. p div div body html iphone uiwebview iphone web share improve..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons collection. It has no GC runtime cost. The compiler inserts retains and releases in all the places you should have anyway. But it's smarter than you and can optimize out the ones that aren't actually needed just like it can unroll loops eliminate..
How to use NSURLConnection to connect with SSL for an untrusted cert? http://stackoverflow.com/questions/933331/how-to-use-nsurlconnection-to-connect-with-ssl-for-an-untrusted-cert Code 1202 UserInfo 0xd29930 untrusted server certificate . Is there a way to set it to accept connections anyway just like in a browser you can press accept or a way to bypass it iphone ssl https share improve this question There..
Basic keyframe animation (rotation) http://stackoverflow.com/questions/1031177/basic-keyframe-animation-rotation As I understand it I ™m not looking for animation along a Path since that ™s for Translation rather than Rotation ... Anyway any help would be VERY much appreciated Thanks in advance. iphone core animation share improve this question Think..
How to get a single entity from an image? http://stackoverflow.com/questions/15131768/how-to-get-a-single-entity-from-an-image
CGImage/UIImage lazily loading on UI thread causes stutter http://stackoverflow.com/questions/1815476/cgimage-uiimage-lazily-loading-on-ui-thread-causes-stutter when it first becomes visible. This puzzles me since my worker thread has explicit code for decompressing JPEG data. Anyway on a hunch I wrote some code to render into a temporary graphics context on the background thread and sure enough the stutter.. I have no idea what UIImage is actually doing behind the scenes. Perhaps it is decompressing the JPEG data. Anyway the method is void forceLazyLoadOfImage UIImage image CGImageRef imgRef image.CGImage CGFloat currentWidth CGImageGetWidth..
iphone sdk CGAffineTransform getting the angle of rotation of an object http://stackoverflow.com/questions/2051811/iphone-sdk-cgaffinetransform-getting-the-angle-of-rotation-of-an-object can include a skew operation which turns the image into a parallelogram and the rotation angle isn't defined anymore. Anyway since the rotation matrix generates cos x sin x 0 sin x cos x 0 0 0 1 You can recover the angle with return atan2 transform.b..
UIDatePicker - Problem Localizing http://stackoverflow.com/questions/2894161/uidatepicker-problem-localizing so you would think the localization of the picker would be linked to the iDevice's language not the Region Format. Anyway to simulate the localized DatePicker in the Simulator Exit your app go to Settings. Select General Select International..
$(document).click() not working correctly on iPhone. jquery http://stackoverflow.com/questions/3705937/document-click-not-working-correctly-on-iphone-jquery events. They raise touch events. Thanks very much apple. Why couldn't they just keep it standard like everyone else Anyway thanks Nico for the tip. Credit to http ross.posterous.com 2008 08 19 iphone touch events in javascript document .ready..
How do I get a view in Interface Builder to load a custom view in another nib? http://stackoverflow.com/questions/3944964/how-do-i-get-a-view-in-interface-builder-to-load-a-custom-view-in-another-nib a paragraph in a comment submits Focus fail. And I can't put this in as a comment on the correct answer Hella lame. Anyway dood that is great. I can make my own widget classes now for goofy Awesome stuff. Make the FileOwner of your UI nib your..
Alternatives For iOS Development Under Windows [duplicate] http://stackoverflow.com/questions/4533847/alternatives-for-ios-development-under-windows is a great OS to develop some stuff but the problem is that I'm under Windows and I don't have any plans to buy a Mac. Anyway what I want isn't the port of the SDK for Windows so I can develop in Objective C. But what I want is to know all maybe..
how to write in append mode for text file http://stackoverflow.com/questions/4779877/how-to-write-in-append-mode-for-text-file the following line of code savedString writeToFile documentTXTPath atomically YES And remaning code are all fine. Anyway check my code also NSArray paths NSSearchPathForDirectoriesInDomains NSDocumentDirectory NSUserDomainMask YES NSString documentsDirectory..
Transferring ownership of an iPhone app on the app store http://stackoverflow.com/questions/671382/transferring-ownership-of-an-iphone-app-on-the-app-store to the iTunes related structure of the appStore. You can't be part of the Beatles and the Rolling Stones Bands... Anyway eventually a colleague managed to get things sorted out and we got our App which was running under my private single Dev.. going to change but they didn't know by when and how. Probably due to iPad coming and related timelines involved . Anyway. It's possible and it's pretty easy. Send your request wait a couple of weeks might be days by now and you'll have the transfer...
Most efficient way to draw part of an image in iOS http://stackoverflow.com/questions/8035673/most-efficient-way-to-draw-part-of-an-image-in-ios with masksToBounds property but using CALayer will give you very little extra performance usually not considerable. Anyway you need to know all of the low level details to use them properly for optimization. Why is that one of the fastest ways.. with UIView implementation because it can get full acceleration of underlying OpenGL which means GPU acceleration . Anyway if you need extreme optimization for hundreds of animated sprites with finely tuned pixel shaders like in a game app you.. like in a game app you should use OpenGL directly because CALayer lacks many options for optimization at lower levels. Anyway at least for optimization of UI stuff it's incredibly hard to be better than Apple. Why your method is slower than UIImageView..
How do I install this script into PhoneGap for iOS http://stackoverflow.com/questions/8718411/how-do-i-install-this-script-into-phonegap-for-ios the need to do this myself. I am an IOS developer but needed to use phonegap to keep costs down for multiplatform dev. Anyway i fixed your code. As i guess you dont want to spend your time learning obj c you just need to replace the contents of your..
UIScrollView image/photo viewer with paging enabled and zooming http://stackoverflow.com/questions/975708/uiscrollview-image-photo-viewer-with-paging-enabled-and-zooming the contentsize etc. Then when you zoom back to 1.0f it adds the other views back and puts things all back in order. Anyway that project works perfectly in the simulator but on the device there is some nasty movement of the view you are resizing..
http://stackoverflow.com/questions/9763979/download-image-asynchronously it crashes when I click the back button and forward button when I try to go back and forth of the view repeatedly . Anyway this happens very rarely but I need to get rid of this bug. Is there any other library that does not use private API's that..
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