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2014/10/15 ¤U¤È 10:14:20
iphone Programming Glossary: specifyingcreate UIImageView with portion of image file http://stackoverflow.com/questions/1049102/create-uiimageview-with-portion-of-image-file drawRect and using CGAffineTransform but it seems like there ought to be a simpler way to do this perhaps by specifying a CGRect to the UIImage that is passed to the UIImageView but I don't see an API for this. iphone uiimageview uiimage ..
Checkbox image toggle in UITableViewCell http://stackoverflow.com/questions/1171476/checkbox-image-toggle-in-uitableviewcell massage some stuff. You probably want to pass in the two image names to make it more reusable and also I'd recommend specifying the notification name string from outside the object as well assuming you are using the notification method. share improve..
How to change the device orientation programmatically in iOS 6 http://stackoverflow.com/questions/12650137/how-to-change-the-device-orientation-programmatically-in-ios-6 supports a mask of interface orientation values. UIInterfaceOrientationMask Enum These constants are mask bits for specifying a view controller ™s supported interface orientations. typedef enum UIInterfaceOrientationMaskPortrait 1 UIInterfaceOrientationPortrait..
color replacement in image for iphone application http://stackoverflow.com/questions/15082025/color-replacement-in-image-for-iphone-application cvGetSize mainImage IPL_DEPTH_8U 3 cvCvtColor mainImage hsvImage CV_RGB2HSV 2 Isolate a color with cvThreshold specifying a certain tolerance you want a range of colors not one flat color . cvThreshold hsvImage threshImage 0 100 CV_THRESH_BINARY..
Programmatically align a toolbar on top of the iPhone keyboard http://stackoverflow.com/questions/158574/programmatically-align-a-toolbar-on-top-of-the-iphone-keyboard the top of the iPhone keyboard as in iPhone Safari when you're navigating form elements for example . Currently I am specifying the toolbar's rectangle with constants but because other elements of the interface are in flux toolbars and nav bars at..
Delegates, can't get my head around them http://stackoverflow.com/questions/1792815/delegates-cant-get-my-head-around-them web is retrieved. What I'd like to know in particular is how to use delegates with multiple objects. As far as I know specifying the same delegate for an object e.g. table cell would cause the same events to be called for both the cells at the same..
Send and receive messages through NSNotificationCenter in Objective-C? [closed] http://stackoverflow.com/questions/2191594/send-and-receive-messages-through-nsnotificationcenter-in-objective-c the notification center to inform us of TestNotification notifications using the receiveTestNotification selector. By specifying object nil we tell the notification center that we are not interested in who posted the notification. If you provided an..
Delegates Vs. Notifications in iPhoneOS http://stackoverflow.com/questions/2232694/delegates-vs-notifications-in-iphoneos If more than one type of message has to be passed from delegatee to delegate delegating can make this clearer by specifying one delegate method per message. For notifications you can use multiple notification names but all notifications end up..
Dismiss keyboard by touching background of UITableView http://stackoverflow.com/questions/2321038/dismiss-keyboard-by-touching-background-of-uitableview object by default this will detect a gesture on a single tap so no further customization is required specifying a target action for when the gesture is fired and then attaching the gesture recognizer object to your table view. E.g...
Setting direction for UISwipeGestureRecognizer http://stackoverflow.com/questions/3319209/setting-direction-for-uiswipegesturerecognizer up should be recognized. It is stated in the docs for UISwipeGestureRecognizer You may specify multiple directions by specifying multiple UISwipeGestureRecognizerDirection constants using bitwise OR operands. The default direction is UISwipeGestureRecognizerDirectionRight...
:active pseudo-class doesn't work in mobile safari http://stackoverflow.com/questions/3885018/active-pseudo-class-doesnt-work-in-mobile-safari active pseudo class doesn't work in mobile safari In Webkit on iPhone iPad iPod specifying styling for an active pseudo class for an a tag doesn't trigger when you tap on the element. How can I get this to trigger..
What is the fastest way to draw single pixels directly to the screen in an iPhone application? http://stackoverflow.com/questions/389289/what-is-the-fastest-way-to-draw-single-pixels-directly-to-the-screen-in-an-iphon
How do I create the current date (or any date) as an NSDate without hours, minutes and seconds? http://stackoverflow.com/questions/4832536/how-do-i-create-the-current-date-or-any-date-as-an-nsdate-without-hours-minut know I asked a similar question earlier but I need to end up with NSDate not a string and I'm a little concerned about specifying a date format e.g. yyyy etc. iphone objective c xcode ios nsdate share improve this question First you have to understand..
How should I specify the path for an sqlite db in an iPhone project? http://stackoverflow.com/questions/5042836/how-should-i-specify-the-path-for-an-sqlite-db-in-an-iphone-project After adding it as a resource the database file itself is in the project root. I've only been able to open it by specifying the full path as OS X sees it i.e. Users Louis Documents Test Project test.db . But of course there is no such path on an..
Passing custom data in [UIButton addTarget] http://stackoverflow.com/questions/5690283/passing-custom-data-in-uibutton-addtarget custom data in UIButton addTarget How do I add custom data while specifying a target in a UIButton id data getSomeData button addTarget self action @selector buyButtonTapped event forControlEvents..
Custom URL scheme not recognized as link in SMS app(only in iphone 4 iOS 5.0) http://stackoverflow.com/questions/7901405/custom-url-scheme-not-recognized-as-link-in-sms-apponly-in-iphone-4-ios-5-0 copy paste it in browser. This happens only in iPhone4 iOS v5.0 Steps to Reproduce Define a custom URL for the app by specifying a new URL scheme in info.plist. Send an SMS with the custom URL of the app to iPhone4 iOS v5.0 . Open the SMS. Expected..
How to change a particular color in an image? http://stackoverflow.com/questions/8046643/how-to-change-a-particular-color-in-an-image Convert the image from RGB to HSV using cvCvtColor we only want to change the hue . Isolate a color with cvThreshold specifying a certain tolerance you want a range of colors not one flat color . Discard areas of color below a minimum size using a..
How to build ICU so I can use it in an iPhone app? http://stackoverflow.com/questions/8126233/how-to-build-icu-so-i-can-use-it-in-an-iphone-app two separate steps compiling libicu for your host MacOS in a build directory cross compiling libicu for iOS by also specifying the cross compile directory. The reason why step 1 is necessary is that libicu will bootstrap itself a bit i.e. it will..
iOS 5: Curious about UIAppearance http://stackoverflow.com/questions/8257556/ios-5-curious-about-uiappearance the appearance to be applied only in some view controllers there is also a method in the docs to control that by specifying where your objects are located UIBarButtonItem appearanceWhenContainedIn ABPeoplePickerNavigationController class nil setTintColor..
Overriding highlighted selection in UIPickerView http://stackoverflow.com/questions/958443/overriding-highlighted-selection-in-uipickerview methods pickerView rowHeightForComponent and pickerView widthForComponent . The default height is 44 if you're not specifying a custom height. The background color must be UIColor clearColor . The view must capture all touches. The one gotcha when..
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