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2014/10/15 ¤U¤È 10:05:28
iphone Programming Glossary: constructiOS PNG Image rotated 90 degrees http://stackoverflow.com/questions/10307521/ios-png-image-rotated-90-degrees share improve this question If you're having trouble due to the existing image imageOrientation property you can construct an otherwise identical image with different orientation like this CGImageRef imageRef sourceImage CGImage UIImage rotatedImage..
Is UIPageControl Useless By Itself? http://stackoverflow.com/questions/1103915/is-uipagecontrol-useless-by-itself
http://stackoverflow.com/questions/1342674/motionbegan-not-working of UIView As discussed in the comments this also works not too surprisingly in a subclass of UIView . Here's how to construct a minimal example. Create a new View based Application project call it ShakeTest . Create a new subclass of UIView call..
http://stackoverflow.com/questions/1424608/nsurlconnection-timeout share improve this question You can specify a timeout in your NSURLRequest object. One way to do this is to construct it via the requestWithURL cachePolicy timeoutInterval method. You can pass in the default NSURLRequestUseProtocolCachePolicy..
Reading binary image data from a web service into UIImage http://stackoverflow.com/questions/2360986/reading-binary-image-data-from-a-web-service-into-uiimage at this link http www.cocoadev.com index.pl BaseSixtyFour scroll to the code sample by MiloBird user . Now I can construct the image successfully. It uses objective c categories to add the selector id dataWithBase64EncodedString NSString string..
Detecting Acceleration in a car (iPhone Accelerometer) http://stackoverflow.com/questions/2733249/detecting-acceleration-in-a-car-iphone-accelerometer cases where this will be difficult and let's concentrate on the math 3 From the forward vector and the gravity vector construct a plane. 4 Whenever a force is received project it onto said plane to get rid of sideways force etc. 5 Then use that force..
Drawing formulas with Quartz 2d http://stackoverflow.com/questions/2907045/drawing-formulas-with-quartz-2d trust me when I say typesetting equations is not a trivial undertaking. In my case I used Core Animation layers to construct the sub elements of a parsed equation. The equations are constructed hierarchically and the operations that compose them.. In my case I used Core Animation layers to construct the sub elements of a parsed equation. The equations are constructed hierarchically and the operations that compose them are laid out as such. Each operation is contained within its parent..
Xcode/GDB: How to get information about an exception that was just thrown? http://stackoverflow.com/questions/3327828/xcode-gdb-how-to-get-information-about-an-exception-that-was-just-thrown arguments are passed on the stack so the syntax is considerably more horrible. The shortest expression I could construct that gets to it is id ebp 8 . To make things less painful I suggest using a convenience variable gdb set exception id ebp..
How to display temporary popup message on iPhone/iPad/iOS http://stackoverflow.com/questions/3737911/how-to-display-temporary-popup-message-on-iphone-ipad-ios inside. It does not ask for user input but disappears on its own in some short period of time. Android has a similar construct which is standard. Also similar to the windows displayed by Growl. Suggestions appreciated. iphone ipad popup alert share..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone So largeImage wont be valid yet. largeImage needs to be an instance variable not scoped to the method. I use this construct to do this when using the method but you may find something more suitable to your use. node.view findLargeImage UIImage..
MPMoviePlayerController vs. MPMoviePlayerViewController http://stackoverflow.com/questions/4056844/mpmovieplayercontroller-vs-mpmovieplayerviewcontroller more generally what is the difference between a controller and a view controller I know that you use a controller to construct a view as with MPMoviePlayerController.view so what does a ViewController create iphone mpmovieplayercontroller share..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer these paths. In essence to get the subpaths to subtract when you add them together you need to draw them or rather construct them in opposite directions one clockwise and the other anti clockwise. Then you need to set your visible path as the clipping..
Call the official *Settings* app from my app on iPhone http://stackoverflow.com/questions/4496813/call-the-official-settings-app-from-my-app-on-iphone to the Network section within the Settings app. I think what I need is the Settings app's url scheme and the format to construct my request. But I doubt that calling such an official app is forbidden. Can anyone can help me iphone objective c settings..
How can I extract a URL from a sentence that is in a NSString? http://stackoverflow.com/questions/4590440/how-can-i-extract-a-url-from-a-sentence-that-is-in-a-nsstring as Dave mentions. Far less prone to error than regular expressions. Take a look at regular expressions . You can construct a simple one to extract the URL using the NSRegularExpression class only available on iPhone but since that's what you're..
How do you create a custom camera view, instead of UIImagePickerViewController? http://stackoverflow.com/questions/5156417/how-do-you-create-a-custom-camera-view-instead-of-uiimagepickerviewcontroller
How do you explicitly animate a CALayer's backgroundColor? http://stackoverflow.com/questions/518192/how-do-you-explicitly-animate-a-calayers-backgroundcolor do you explicitly animate a CALayer's backgroundColor I'm trying to construct a CABasicAnimation to animate the backgroundColor property of a Core Animation CALayer but I can't figure out how to properly..
Can you use cancel/isCancelled with GCD/dispatch_async? http://stackoverflow.com/questions/5449469/can-you-use-cancel-iscancelled-with-gcd-dispatch-async were re implemented to use GCD internally. So the dependency is the other way around. NSOperation is a higher level construct than GCD. Even if you were to use NSOperation though your implementation of cancellation would be largely the same you'd.. the same you'd still have to check self.isCancelled periodically to see whether you should abandon the space ship construction. The only concern I have with your implementation of the CHECKER macro is that it implements an unexpected return . As..
How to check what day of the week it is (i.e. Tues, Fri?) and compare two NSDates? http://stackoverflow.com/questions/583692/how-to-check-what-day-of-the-week-it-is-i-e-tues-fri-and-compare-two-nsdate then you can access individual parts of the date like this components year components month components day Or you can construct a new NSDate object using NSCalendar 's dateFromComponents method and compare the two NSDate objects. share improve this..
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 in bounds. If you wish to build your view hierarchy manually the recommended place to do so is in loadView. Since you construct the view yourself in this method you can initialize its frame to whatever you'd like. The size you choose doesn't matter..
How do you shrink a UIPickerView on the iPhone? http://stackoverflow.com/questions/905969/how-do-you-shrink-a-uipickerview-on-the-iphone and one column. The height of the picker view should be equal to the height of a row. I'm using Interface Builder to construct the UIPickerView but I can't find an easy way to resize this control. How do you shrink a UIPickerView iphone ios interface..
iPhone: Override UIButton buttonWithType to return subclass http://stackoverflow.com/questions/2562713/iphone-override-uibutton-buttonwithtype-to-return-subclass as well. Does anyone know how to do this @implementation OversizedButton id buttonWithType UIButtonType buttonType Construct and return an OversizedButton rather than a UIButton Needs to handle special types such as UIButtonTypeDetailDisclosure..
Can I select a specific block of text in a UITextField? http://stackoverflow.com/questions/3277538/can-i-select-a-specific-block-of-text-in-a-uitextfield position for left and for right UITextPosition newPosition textField positionFromPosition selectedRange.start offset 5 Construct a new range using the object that adopts the UITextInput our textfield UITextRange newRange textField textRangeFromPosition..
Reading samples via AVAssetReader http://stackoverflow.com/questions/4049207/reading-samples-via-avassetreader whether you are talking about video samples or audio samples. To read video samples you need to do the following Construct an AVAssetReader asset_reader AVAssetReader alloc initWithAsset asset error error error checking goes here Get the video.. doing something real time certain video formats perform better than others BGRA is faster than ARGB for instance . Construct the actual track output and add it to the asset reader AVAssetReaderTrackOutput asset_reader_output AVAssetReaderTrackOutput..
Facebook FQL multiquery in iOS SDK http://stackoverflow.com/questions/6022522/facebook-fql-multiquery-in-ios-sdk help on this would be very appreciated iphone objective c facebook fql fql.multiquery share improve this question Construct your FQL Query NSString fql NSString stringWithFormat @ SELECT uid name hometown_location from user where uid IN SELECT..
Access to iPhone music library http://stackoverflow.com/questions/625625/access-to-iphone-music-library audio items from the user ™s library. This support lets you play all audio types supported by the iPod application. Construct queues of audio items to play back. Perform searches of the user ™s audio library. Access the user ™s playlists including..
Return NSArray from NSDictionary http://stackoverflow.com/questions/6481504/return-nsarray-from-nsdictionary have daylight saving NSCalendar cal NSCalendar currentCalendar cal setTimeZone NSTimeZone timeZoneForSecondsFromGMT 0 Construct DateComponents based on startDate so the iterating date can be created. Its massively important to do this assigning via..
How to use a common target object to handle actions/outlets of multiple views? http://stackoverflow.com/questions/6950674/how-to-use-a-common-target-object-to-handle-actions-outlets-of-multiple-views to use in the code below . Profit The Code id owner self or whatever id targetObject self.targetObject or whatever... Construct a dictionary of objects with strings identifying them. These strings should match the Identifiers you specified in IB's..
iPhone: How to send a HTTP request to a web service using Xcode http://stackoverflow.com/questions/7262484/iphone-how-to-send-a-http-request-to-a-web-service-using-xcode request urlData NSURLConnection sendSynchronousRequest urlRequest returningResponse response error error Construct a String around the Data from the response return NSString alloc initWithData urlData encoding NSUTF8StringEncoding This..
Objective-C: Asynchronously populate UITableView - how to do this? http://stackoverflow.com/questions/7491517/objective-c-asynchronously-populate-uitableview-how-to-do-this id CIMGFSimpleDownloadDelegate delegate @end This subclass is the most basic way to download something from a URL. Construct it with a NSURLRequest and a delegate. It will call back on a success or failure. The implementation is only slightly longer...
Array nil (even when addObject:) [duplicate] http://stackoverflow.com/questions/8569495/array-nil-even-when-addobject animated YES Grab the selected item entry channel items objectAtIndex indexPath row if entry NSLog @ entry Construct a URL with the link string of the item NSURL url NSURL URLWithString entry link Construct a request object with that URL.. row if entry NSLog @ entry Construct a URL with the link string of the item NSURL url NSURL URLWithString entry link Construct a request object with that URL NSURLRequest req NSURLRequest requestWithURL url Load the request into the web view webViewController..
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