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2014/10/15 ¤U¤È 10:03:30
iphone Programming Glossary: additionallyiOS Image Orientation has Strange Behavior http://stackoverflow.com/questions/10600613/ios-image-orientation-has-strange-behavior is set to 3. My workaround code is smart enough to realize this and flip it so the user never notices. Additionally my code to save the image to the library realizes this flips it then saves it so it appears in the camera roll properly...
How does the iOS app Display Recorder record the screen without using private API? http://stackoverflow.com/questions/11090184/how-does-the-ios-app-display-recorder-record-the-screen-without-using-private-ap when detected by the static analysis Apple runs how were they able to do this recording in an approved application Additionally the app causes a red bar to appear at the top of the screen while it records similar to the native iOS's phone call functionality...
iphone 5 simulator - Cannot click on bottom of screen? http://stackoverflow.com/questions/12678864/iphone-5-simulator-cannot-click-on-bottom-of-screen that the bottom portion of my app does not seem to be responding to touch I have a page control and an info button . Additionally when switching screens using the following code self presentModalViewController tableNavController animated YES The bottom..
How can I encrypt CoreData contents on an iPhone http://stackoverflow.com/questions/1645007/how-can-i-encrypt-coredata-contents-on-an-iphone that you're looking for it will have a much lower memory footprint than decrypting an entire database into memory. Additionally it will allow the decryption to be done lazily rather than all up front so your application will load much faster. Depending..
why most of the objects we create in iphone are pointers http://stackoverflow.com/questions/3044292/why-most-of-the-objects-we-create-in-iphone-are-pointers it the derived type instead of the base type and using pointers only as in Obj C eliminates this potential pitfall. Additionally allowing stack allocated objects complicates the reference counting scheme that Objective C has in place and since stack..
Obtaining an NSDecimalNumber from a locale specific string? http://stackoverflow.com/questions/317311/obtaining-an-nsdecimalnumber-from-a-locale-specific-string also should relate to when you need to take a locale specific currency string and convert it to an NSDecimalNumber. Additionally this can be expanded to a locale specific percentage string and convert it to a NSDecimalNumber. iphone objective c cocoa..
Data Formatters temporarily unavailable, will re-try after a 'continue' http://stackoverflow.com/questions/3843903/data-formatters-temporarily-unavailable-will-re-try-after-a-continue iPCU . If it says something like memory level is critical and mentions killing your app then you've run out of memory. Additionally when you run out of memory the crash reporter writes a low memory crash log with jettisoned beside the processes that were..
iPhone SDK 4 AVFoundation - How to use captureStillImageAsynchronouslyFromConnection correctly? http://stackoverflow.com/questions/3847140/iphone-sdk-4-avfoundation-how-to-use-capturestillimageasynchronouslyfromconnec asked me for some sample code but by then I'd decided to use the video frame workaround and had a release to release. Additionally the low preset is very low res and results in a low res low framerate video preview . I'd go for 640x480 if available falling..
Architectural and design question about uploading photos from iPhone app and S3 http://stackoverflow.com/questions/4481311/architectural-and-design-question-about-uploading-photos-from-iphone-app-and-s3 you enable the iPhone or any mobile app on a different platform to write into my S3 bucket without giving it my secret Additionally I'm not sure if this is a good design or not because the flow would be iphone uploads to S3 gets the URL then tells the..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now for a long time in the main thread lengthy calculations etc. will prevent the interface updates from being started. Additionally anything that runs for a while on the main thread will also cause your touch handling to be unresponsive. This means that..
Checking a null value in Objective-C that has been returned from a JSON string http://stackoverflow.com/questions/4839355/checking-a-null-value-in-objective-c-that-has-been-returned-from-a-json-string me from saving a NSDictionary . I have tried using the conditions myString length and myString nil and myString NULL Additionally where is the best place in the iOS documentation to read up on this iphone objective c string json share improve this..
iPhone TBXML Looping And Parsing Data http://stackoverflow.com/questions/5406424/iphone-tbxml-looping-and-parsing-data the XML file looking for an element with the name you're looking for then it grabs the data from the child nodes. Additionally the data is added to the records array. So basically when it's done it should have the data you're wanting in your records..
HTML5 video player behavior on iPhone and iPod in Safari Web Apps http://stackoverflow.com/questions/5438520/html5-video-player-behavior-on-iphone-and-ipod-in-safari-web-apps in a customized UIWebView but unfortunately that is not an option as this is meant to be a web app not a native app . Additionally the video property webkit playsinline does not work. Are there any HTML5 video players that can replicate the embedded YouTube..
instruments with iOS: Why does Memory Monitor disagree with Allocations? http://stackoverflow.com/questions/5518918/instruments-with-ios-why-does-memory-monitor-disagree-with-allocations amount of memory that the app is using. Does anyone know why there is such a big disagreement between these two tools Additionally is it possible to find the source of the low system memory or how to keep it from running out so quickly My app doesn't..
iOS CVImageBuffer distorted from AVCaptureSessionDataOutput with AVCaptureSessionPresetPhoto http://stackoverflow.com/questions/6540710/ios-cvimagebuffer-distorted-from-avcapturesessiondataoutput-with-avcapturesessio lets a user point his or her iPhone camera around and see video frames that have been processed with visual effects. Additionally the user can tap a button to take a freeze frame of the current preview as a high resolution photo that is saved in their..
Video Encoding using AVAssetWriter - CRASHES http://stackoverflow.com/questions/8191840/video-encoding-using-avassetwriter-crashes you must release the object. Since you're not doing so you're going to leak a copy every pass through your while loop. Additionally you're running that loop tightly without managing an autorelease pool. If there are objects being autoreleased in any of..
Error in accessing google reader's Endpoints API http://stackoverflow.com/questions/8229019/error-in-accessing-google-readers-endpoints-api header . See http code.google.com p google reader api wiki Authentication for the supported authentication schemes. Additionally the Authorization header should be formatted as GoogleLogin auth auth token where auth token is the Auth value from the..
Detecting Color of iPhone/iPad/iPod touch? http://stackoverflow.com/questions/8463212/detecting-color-of-iphone-ipad-ipod-touch for his iPhone I'd suggest to initially ask the user Hey what's the color of your phone and then do accordingly. Additionally a research provided me with this information I'm not sure if it's TRUE or if is going to help you. The serial number is..
ASIHTTPRequest vs AFNetworking framework http://stackoverflow.com/questions/8636418/asihttprequest-vs-afnetworking-framework is about to go into version 2.0 and has a thriving developer community whereas ASIHTTPRequest is pretty much dead. Additionally AFNetworking has dozens of great helper libraries and classes available for handling things like OAuth Amazon S3 and the..
Hide keyboard when user touches uiview http://stackoverflow.com/questions/963571/hide-keyboard-when-user-touches-uiview call this on multiple text fields if you're not sure where the focus is currently located I haven't tested that case. Additionally in Interface Builder you'll need to enable the User Interaction Enabled checkbox for the view or programatically use myView.userInteractionEnabled..
Is PhoneGap the right choice for me? http://stackoverflow.com/questions/11422108/is-phonegap-the-right-choice-for-me by embedding a webview within your application. Therefore you can apply your knowledge in HTML CSS JavaScript and it additionally provides ways to interact with native features e.g. camera gps ... . With PhoneGap you write one general web app tweak parts..
How to add controls beneath a UIWebView http://stackoverflow.com/questions/1181609/how-to-add-controls-beneath-a-uiwebview header dumps will get you started. Keep in mind that if Apple notices what you're doing they may reject your app and additionally the internals may change at any time breaking your code. If you go this route try to code it in such a way that missing..
What happens if I don't retain IBOutlet? http://stackoverflow.com/questions/1250518/what-happens-if-i-dont-retain-iboutlet it when setting the instance variable. One interesting point this highlights is that because the UITextField is additionally retained through the property you'll likely not want to keep it around in case of a memory warning. For this reason you.. the scenario. Simply following the guidelines will help avoid problems as you encounter more complex situations. It is additionally worth noting that the memory management behavior differs on Mac OS X on the desktop. On the desktop setting an IBOutlet..
Jailbroken iPhone - root privilages http://stackoverflow.com/questions/1516403/jailbroken-iphone-root-privilages
Select tableview row programmatically http://stackoverflow.com/questions/2035061/select-tableview-row-programmatically
Objective-C: alloc of object within init of another object (memory management) http://stackoverflow.com/questions/2818254/objective-c-alloc-of-object-within-init-of-another-object-memory-management to me because of my @property retain setting I automatically increase the retain counter when setting self.myArray but additionally I have already a 1 retain due to the NSMutableArray alloc and then ending up with a retain count of 2 for that object but..
Problem dealloc'ing memory used by UIImageViews with fairly large image in an UIScrollView http://stackoverflow.com/questions/289360/problem-deallocing-memory-used-by-uiimageviews-with-fairly-large-image-in-an-ui of UIImage. This call uses caching for the image. Normally this is what you want. However with very large images and additionally ones that scroll far off of the visible area it does not seem to be obeying memory warnings and dumping this cache. This..
Must drawInRect: for a separate context be executed on the main thread? http://stackoverflow.com/questions/3207536/must-drawinrect-for-a-separate-context-be-executed-on-the-main-thread #11 0x30c85078 in thread_start update 4 When I run this in the Simulator and this problem happens the console additionally shows the following the below is before loading the first thumbnail Error CGContextSaveGState invalid context Error CGContextSetBlendMode..
UIFileSharingEnabled has no effect http://stackoverflow.com/questions/4546334/uifilesharingenabled-has-no-effect
http://stackoverflow.com/questions/8086584/objective-c-url-encoding
Is it possible to get maximal GPS precision on mobile browser? http://stackoverflow.com/questions/8257160/is-it-possible-to-get-maximal-gps-precision-on-mobile-browser fell to 800 1000 meters. In the same time on GPS Test app on Android I've received GPS position accuracy of 14m and additionally altitude and speed data. So as I see I've not received in both devices in mobile browser either the full data set available..
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