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2014/10/15 ¤U¤Č 10:04:44
iphone Programming Glossary: btwHow to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees 3 components kCGImageAlphaPremultipliedLast. I don't get an error whenever I provide a SMALLER size as the target size BTW . Can any of you show me how to just ROTATE my UIImage 90 degrees CCW using just core graphics functions while preserving..
iPhone: Base versus Active versus Deployment target http://stackoverflow.com/questions/1358033/iphone-base-versus-active-versus-deployment-target settings One final question is apple allowing to choose iPhone OS 2.0 as the Deployment Target Thanks in advance BTW one of my main reason for this question is because when compiling with earlier SDKs apple seems to have a problem releasing..
How to use bluetooth to connect two iPhone? http://stackoverflow.com/questions/1427250/how-to-use-bluetooth-to-connect-two-iphone connection between two iPhones but I don't find any bluetooth API in iPhone SDK 3.0. Can anybody help me Thanks. BTW Is it possible to connect more than two iPhones at the same time by using bluetooth iphone bluetooth share improve this..
HowTo initialise MKMapView with a given user location? http://stackoverflow.com/questions/1437568/howto-initialise-mkmapview-with-a-given-user-location this question Yes it is possible to have a separate location manager object and assign its value to the mapview BTW I'm using ' ' below as list prefix to prevent the SO code formatter from borking . In your UIViewController maintain two..
Dragging an UIView inside UIScrollView http://stackoverflow.com/questions/1481826/dragging-an-uiview-inside-uiscrollview to drag around the cards and still scroll the subview. It's a lot simpler and cleaner than the hitTest solution above. BTW for extra credit if you are using iOS 3.2 or 4.0 or later use the UIPanGestureRecognizer class to handle the drag and drop..
Is there a way to programatically restore my iphone to factory settings? http://stackoverflow.com/questions/15203001/is-there-a-way-to-programatically-restore-my-iphone-to-factory-settings how to use it. An application which uses this API should have com.apple.springboard.wipedevice entitlement to work. BTW. One more alternative is to use MDM protocol. It has a wipe command. However it requires way more machinery MDM server enroll..
Do you know a good and efficient FFT? [closed] http://stackoverflow.com/questions/1592345/do-you-know-a-good-and-efficient-fft which offers an easy power of 2 1D FFT implementation for free and some typing and would be very memory efficient. BTW for voice you probably only need to go to 3 4Khz....10Khz is way way up there for the human voice. share improve this answer..
composite colors: CALayer and blend mode on iPhone http://stackoverflow.com/questions/1658751/composite-colors-calayer-and-blend-mode-on-iphone rect CGContextRef c UIGraphicsGetCurrentContext CGContextSetBlendMode c kCGBlendModeDifference myLayer drawInContext c BTW I did not add the layers as sublayers of the view's layer that is I never called myView.layer addSublayer myLayer share..
@property and retain, assign, copy, nonatomic in Objective-C http://stackoverflow.com/questions/2255861/property-and-retain-assign-copy-nonatomic-in-objective-c the default. Always use nonatomic . I don't know why but the book I read said there is rarely a reason to use atomic . BTW The book I read is the BNR iOS Programming book. readwrite vs. readonly readwrite is the default. When you @synthesize both..
How do I zoom an MKMapView to the users current location without CLLocationManager? http://stackoverflow.com/questions/2473706/how-do-i-zoom-an-mkmapview-to-the-users-current-location-without-cllocationmanag
Displaying ppt, doc, and xls in UIWebView doesn't work but pdf does http://stackoverflow.com/questions/2520137/displaying-ppt-doc-and-xls-in-uiwebview-doesnt-work-but-pdf-does 8 baseURL nil where MIMEType is @ application vnd.ms powerpoint @ application vnd.ms word @ application vnd.ms excel BTW I've seen DOC files use mimetype @ application msword but the vnd version seems more appropriate. I tried both just in case...
Most effective way to do networking on Mac/iPhone? http://stackoverflow.com/questions/4269613/most-effective-way-to-do-networking-on-mac-iphone what you're after. It is used everywhere in the 300 000 iFone apps. It is networking on the iFone. Hope it helps. BTW it's worth nothing that there is absolutely nothing wrong at all with just using GK .. the performance can be spectacular...
What's the best way to put a c-struct in an NSArray? http://stackoverflow.com/questions/4516991/whats-the-best-way-to-put-a-c-struct-in-an-nsarray making a new little class. However I want to know how the usual idiom for actually putting structs in an array thanks. BTW here's the NSData approach which is perhaps not best... Megapoint p NSArray a NSArray arrayWithObjects NSData dataWithBytes.. sizeof Megapoint NSData dataWithBytes p length sizeof Megapoint NSData dataWithBytes p length sizeof Megapoint nil BTW as a point of reference and thanks to Jarret Hardie here's how to store CGPoints and similar in an NSArray NSArray points..
iOS Application Background Downloading http://stackoverflow.com/questions/4579810/ios-application-background-downloading class and set it in my ViewControllers like that MyService service setDownloadProgressDelegate self.myUIProgressView BTW. If you need to continue downloading even when your app exits you can set ShouldContinueWhenAppEntersBackground property..
how to detect (iphone sdk) if a video file was recorded in portrait orientation, or landscape http://stackoverflow.com/questions/4627940/how-to-detect-iphone-sdk-if-a-video-file-was-recorded-in-portrait-orientation you are holding the phone in landscape orientation on playback and correctly displaying it if holding it in portrait. BTW I can't use ffmpeg can't live with the license restrictions . Is there an iPhone SDK native way to do this iphone sdk video..
Zooming MKMapView to fit annotation pins? http://stackoverflow.com/questions/4680649/zooming-mkmapview-to-fit-annotation-pins annotations. I am pretty sure this will work but I just wanted to check I was not missing anything obvious. Code added BTW FGLocation is an class that conforms to MKAnnotation locationFake is an NSMutableArray of these objects. Comments always..
Point in Tilt Direction - iPhone http://stackoverflow.com/questions/5128861/point-in-tilt-direction-iphone unit test that section you write before you proceed here is one of many answers from SO UIAccelerationValue angle BTW as you can probably see you can get a rough result by taking the ratio of simply the raw x by raw y value rather than the..
Programatically answer an incoming phone call on iPhone http://stackoverflow.com/questions/5219526/programatically-answer-an-incoming-phone-call-on-iphone
iOS: Connect to Facebook without leaving the app for authorization http://stackoverflow.com/questions/5666523/ios-connect-to-facebook-without-leaving-the-app-for-authorization wants to share something. So my question is if there is a way to authenticate with Facebook without leaving the app. BTW I have tried to use the old API. It worked in the beginning but yesterday it stopped working. I just see a blank screen..
HTML character decoding in Objective-C / Cocoa Touch http://stackoverflow.com/questions/1105169/html-character-decoding-in-objective-c-cocoa-touch I found this Objective C HTML escape unescape but it doesn't work for me. My encoded characters come from a RSS feed btw look like this #038 I searched all over the net and found related discussions but no fix for my particular encoding I think..
http://stackoverflow.com/questions/1166444/mkmapview-zoom-and-region but will then rubber band back into place. However your mileage may vary since I haven't used it for this purpose. btw there are definite fixes improvements in OS 3.1 to aspects of MapKit that were giving me trouble in 3.0. share improve..
openURL a local file or force UIDocumentInteractionController to use a specific app http://stackoverflow.com/questions/12539243/openurl-a-local-file-or-force-uidocumentinteractioncontroller-to-use-a-specific data that I would prefer not to make so readily available. When the file is opened by my intended app not made by me btw it does not allow any kind of saving or access to raw data. I realize that by including the file in my app anyone who is..
Jailbroken iPhone - root privilages http://stackoverflow.com/questions/1516403/jailbroken-iphone-root-privilages var mobile Library but I get nothing in subdirectories like var mobile Library Notes var mobile Library SBSettings and btw what is most important in my case var mobile Library SMS or Notes displays nothing. Of course when I browse my device by..
Embedding Python in an iPhone app http://stackoverflow.com/questions/3691655/embedding-python-in-an-iphone-app useful . Also you might want to join the pyobjc dev list. While you aren't targeting a PyObjC based application which btw is a good idea PyObjC has a long way to go before it'll be iOS friendly the PyObjC community has been discussing this and..
UISearchDisplayContoller ??can't prevent table reload on typing in search bar http://stackoverflow.com/questions/3903718/uisearchdisplaycontoller-cant-prevent-table-reload-on-typing-in-search-bar self.searchDisplayController.searchBar.text stringByAppendingFormat @ # d indexPath.row return cell Thanks btw this is my first question asked here ”please let me know if I miss any points of etiquette iphone uitableview uisearchbar..
Accessing Videos in library using AssestsLibrary framework iPhone? http://stackoverflow.com/questions/3948485/accessing-videos-in-library-using-assestslibrary-framework-iphone code...but when i run the application the code is not working...the array assets is still empty what am i doing wrong btw my iPhone is a 3G upgraded to iPhone 4.1. but assets framework is not giving any error NSMutableArray assets NSMutableArray..
How to show HTML text from API on the iPhone? http://stackoverflow.com/questions/4138336/how-to-show-html-text-from-api-on-the-iphone those so no problems there. But I don't know what to do with the HTML chunk. I'm doing all of this programmatically btw. If you can't tell I'm relatively new to iOS development only about 2 3 weeks in with NO obj c background. So if a UIWebView..
A valid provisioning profile for this executable was not found for debug mode http://stackoverflow.com/questions/4167466/a-valid-provisioning-profile-for-this-executable-was-not-found-for-debug-mode and also removed and reinstalled it and recreated the project but i am getting that whenever i try to debug on device. btw the adhoc distribution provision profile works. I spent my whole day to find out a solution but nothing. hope someone has..
How can I check if an NSDate falls in between two other NSDates in an NSMutableArray http://stackoverflow.com/questions/5293543/how-can-i-check-if-an-nsdate-falls-in-between-two-other-nsdates-in-an-nsmutablea NSMutableArray In my app I have an NSMutableArray that users can modify by adding or deleting entries from the array btw entries are always added at index 0 this is done using a table view. Each entry in the array store's the date that the cell..
UIDocumentInteractionController crashing upon exit http://stackoverflow.com/questions/6152764/uidocumentinteractioncontroller-crashing-upon-exit where the call to presentPreviewAnimated is found. If somebody could please take a look I would be most grateful. btw there is no NIB file when this view controller is created. Yes this in itself is wrong iphone ios uiviewcontroller uidocumentinteraction..
How to disable iOS System Sounds http://stackoverflow.com/questions/6284402/how-to-disable-ios-system-sounds ios ipad share improve this question It is possible to change the system sounds which turns out to be the ringer btw using the AVSystemController. However AVSystemController exists in the private Celestial framework. Since this framework..
Problems with fbDidLogin never called iOS http://stackoverflow.com/questions/7044412/problems-with-fbdidlogin-never-called-ios just doesn't work...It wil doe authorize every time when the view did load loads again. Has anyone got a clue Thnx btw I also have the following line BOOL application UIApplication application handleOpenURL NSURL url return controller facebook..
http://stackoverflow.com/questions/7729473/can-i-use-username-and-password-information-from-uitextfields-to-log-onto-a-webs sorry just realised you already had the solution but were missing the implementation. Hope the above helps. btw to add a dynamic variable into the injected javascript use void webViewDidFinishLoad UIWebView webView NSString injectedVariable..
Is it possible to target older iOS versions when using Xcode 4.2 and iOS 5 SDK? http://stackoverflow.com/questions/7760946/is-it-possible-to-target-older-ios-versions-when-using-xcode-4-2-and-ios-5-sdk to iOS 4.2. 4 Open the projects Info.plist remove the setting Required device capabilities note it required armv7 btw I figured this out when I tried to manually add the app via the organizer and it reported Can't install application The..
Objective-C 2.0: class_copyPropertyList(), how to list properties from categories http://stackoverflow.com/questions/848636/objective-c-2-0-class-copypropertylist-how-to-list-properties-from-categorie properties of a class including those coming from categories I tried this with the iPhone simulator iPhone SDK 2.2.1 btw. in case this is important . iphone objective c cocoa share improve this question Based on my tests here properties..
Can't convert from NSString to NSDate http://stackoverflow.com/questions/9254700/cant-convert-from-nsstring-to-nsdate @ datefromstring @ dateString dateFromString return dateFromString dateFromString is nil. What should I do Thanks btw dateString will always contain a string ed date in this format 2012 02 10 08 01 25 0000 iphone objective c xcode share..
How to disable vertical bounce/scroll on iPhone in a mobile web application http://stackoverflow.com/questions/9669670/how-to-disable-vertical-bounce-scroll-on-iphone-in-a-mobile-web-application things but most of them disables my form or horizontal scroll and bounce as well. Any ideas Im using jquery.mobile btw Update I actually managed to get the code from the first answer working somewhat function stopScrolling touchEvent touchEvent.preventDefault..
Cocoa-Touch, NSManagedObject: Exception when setting a property http://stackoverflow.com/questions/1556304/cocoa-touch-nsmanagedobject-exception-when-setting-a-property instead of being a @property nonatomic retain NS String Number propname it's a @property nonatomic retain NSDate date Btw the Item instance I'm assigning on is just a regular Item alloc init no associated context or anything. First I thought..
removing jagged edges of my ropes using antialiasing of OpenGLES http://stackoverflow.com/questions/17500418/removing-jagged-edges-of-my-ropes-using-antialiasing-of-opengles Retina devices or simply ignore that the issue exists on non Retina devices because they're about to go away anyway. Btw the CCTexture2D aliasing and antialiasing methods are confusingly named they do not perform full screen or texture edge..
ToolBar between UINavigationBar and UITableView? http://stackoverflow.com/questions/17825226/toolbar-between-uinavigationbar-and-uitableview of NSFetchedResultsController. Any ideas on how to accomplish this Would I have to do it programmatically If so how Btw I'm targeting iOS6 with storyboards and ARC. iphone ios objective c uitableviewcontroller share improve this question..
Is it possible to successful animate a moving UIButton? http://stackoverflow.com/questions/3568868/is-it-possible-to-successful-animate-a-moving-uibutton thePath bubble.layer addAnimation theGroup forKey @ animatePosition But the buttons still don't respond to touches. Btw I have several of these 'bubble' buttons on screen at once so having several NSTimers concurrently active wouldn't be optimal...
A TimeMachine taking my iDevice back to 3.1.2? http://stackoverflow.com/questions/4487314/a-timemachine-taking-my-idevice-back-to-3-1-2 it possible that I get a iPhone 3Gs with iOS 4.x and some software package so that I can restore it back to iOS 3.1.2 Btw by saying 3.1.2 I mean the official non jailbreaking 3.1.2. Many thanks Di iphone objective c iphone sdk 3.0 share improve..
Objective C: How to upload image and text using HTTP POST? http://stackoverflow.com/questions/5422028/objective-c-how-to-upload-image-and-text-using-http-post work I do not get any error in the console or anything and the image is uploaded but the text is not sent. Any ideas Btw The server side script is a very simple php script. iphone objective c ipad file upload http post share improve this..
How to capitalize or change case of an NSString in Objective-C? http://stackoverflow.com/questions/5586756/how-to-capitalize-or-change-case-of-an-nsstring-in-objective-c nsstring share improve this question Here ya go viewNoteDateMonth.text displayDate objectAtIndex 2 uppercaseString Btw april is lowercase NSString lowercaseString APRIL is UPPERCASE NSString uppercaseString April May is Capitalized Word Caps..
UIView beginAnimations with subviews http://stackoverflow.com/questions/868121/uiview-beginanimations-with-subviews The problem is that when I add subviews to myView to my surprise they do not follow their superview's animation scheme Btw. subviews are currently added as usual in MyView's initWithFrame. I tried to set their transform property to CGAffineTransformIdentity..
Removing view from its superview http://stackoverflow.com/questions/8853544/removing-view-from-its-superview it again Why not immediately self.subView.hidden YES self.subView endEditing YES self.subView removeFromSuperview Btw you might want to look into your memory management I see you alloc your subView but I don't see it being released when the..
How to write exif metadata to an image (not the camera roll, just a UIImage or JPEG) http://stackoverflow.com/questions/9006759/how-to-write-exif-metadata-to-an-image-not-the-camera-roll-just-a-uiimage-or-j
Draw a straight line using OpenGL ES in iPhone? http://stackoverflow.com/questions/9736887/draw-a-straight-line-using-opengl-es-in-iphone per vertex 2 floats per vertex NULL offset to the first coordinate in this case 0 glDrawArrays GL_LINES 0 2 render Btw I've been going through Learning OpenGL ES for iOS by Erik Buck which you can buy in Rough Cut form through O'Reilly an..
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