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2014/10/15 ¤U¤È 10:11:15
iphone Programming Glossary: maintainingHow to properly design multi-orientation iPad application http://stackoverflow.com/questions/11621777/how-to-properly-design-multi-orientation-ipad-application base class I use is equally applicable to iPhone apps. I actually have a more complicated version that handles maintaining iPad and iPhone portrait and landscape layouts for Universal apps . But this question was only about iPad so I stripped..
Improving Finger Painting Performance http://stackoverflow.com/questions/1355527/improving-finger-painting-performance 7 Delete Temporary Graphics on top UIView. In this manner I can accumulate graphics on the underlying UIView while maintaining responsive painting of the temporary graphics on the top UIView. Sidenote Each Drawing is simply an NSArray of custom Point.. most obvious. You may also want to look into bitmap image representations and draw directly into a CGImage rather than maintaining a bunch of CGPoints. Take a look at the Quartz 2D Programming Guide . EDIT Your object below is the equivalent of an NSValue..
How do I scroll a UITableView to a section that contains no rows? http://stackoverflow.com/questions/159821/how-do-i-scroll-a-uitableview-to-a-section-that-contains-no-rows rows NSIndexPath indexPathForRow NSNotFound inSection section I'll leave my original workaround here for anyone still maintaining a project using the 2.x SDK. Found a decent workaround CGRect sectionRect tableView rectForSection indexOfSectionToScrollTo..
sqlite Indexing Performance Advice http://stackoverflow.com/questions/1862771/sqlite-indexing-performance-advice there are things you can do to improve search performance. Apple recommend using a derived properties. This amounts to maintaining a normalised version of your property in your model that is used for searching. The derived property should be done in a..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view coordinate system. Because the position is relative to the anchorPoint of the layer changing that anchorPoint while maintaining the same position moves the layer. In order to prevent this movement you would need to adjust the layer's position to account..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone JSON implementation for the iPhone which would allow me to 1 convert the core data records into a JSON string whilst maintaining the relationship between the entities and 2 convert the JSON string back into core data objects again preserving the relationship..
http://stackoverflow.com/questions/262156/uiimage-rounded-corners into. The scaledHeight is the height that the image actually is drawn at once we take into account the ideal of maintaining proportions float scaleFactor 0.0 float scaledWidth targetSize.width float scaledHeight targetSize.height CGPoint thumbnailPoint..
iPhone Simulator 3.x not listed after upgrading to XCode 3.2.3 Beta4 with OS 4.0 http://stackoverflow.com/questions/2932129/iphone-simulator-3-x-not-listed-after-upgrading-to-xcode-3-2-3-beta4-with-os-4-0 you install the 3.x sdk in parallel to the 4.0. I keep the two Developer directories on my machine Developer for maintaining apps written for 3.0 and 3.1 and Developer4.0Beta for migrating apps to 4.0 and trying out the new features that will be..
http://stackoverflow.com/questions/3320355/how-should-i-approach-building-a-universal-ios-app-that-will-include-ios-4-featu that does not know about the UILocalNotification class. You can still support UILocalNotification in your code while maintaining backwards compatibility by using the following code snippet Class notificationClass NSClassFromString @ UILocalNotification..
How do I open the Settings application from my application? http://stackoverflow.com/questions/377102/how-do-i-open-the-settings-application-from-my-application your users to look in Settings.app if they need to change those settings in the future. Unfortunately that means maintaining some minimal UI for your user to fill in their settings during that first launch but it seems better from a UX perspective..
Most effective way to do networking on Mac/iPhone? http://stackoverflow.com/questions/4269613/most-effective-way-to-do-networking-on-mac-iphone HTTP client classes My current aim is to stream device status e.g. accelerometer over the network over UDP while also maintaining signaling and delivery guaranteed event e.g. button pressed connection over TCP. A desktop application would display this..
How to steal touches from UIScrollView? http://stackoverflow.com/questions/4629499/how-to-steal-touches-from-uiscrollview comprehensive research on how to steal touches from a UIScrollView and send them instantly to a specific subview while maintaining the default behavior for the rest of the scroll view. Consider having a UIPickerView inside of a UITableView. The default..
Difference between UIViewContentModeScaleAspectFit and UIViewContentModeScaleToFill? http://stackoverflow.com/questions/4895272/difference-between-uiviewcontentmodescaleaspectfit-and-uiviewcontentmodescaletof ratio of the content if necessary. UIViewContentModeScaleAspectFit Scales the content to fit the size of the view by maintaining the aspect ratio. Any remaining area of the view ™s bounds is transparent. UIViewContentModeScaleAspectFill Scales the content..
http://stackoverflow.com/questions/4947556/what-is-a-runloop . No additional threads involved and better yet it isn't polling to check the time. Think of a run loop as effectively maintaining a timeline. It'll passively let time elapse until there is something of interest found on the timeline all without polling..
Why is autorelease especially dangerous/expensive for iPhone applications? http://stackoverflow.com/questions/613583/why-is-autorelease-especially-dangerous-expensive-for-iphone-applications carefully not avoiding it altogether. and now for my comment It sounds like there is a certain amount of overhead in maintaining the pool. I read this article which would lead me to probably avoid autorelease as much as possible because I prefer things..
http://stackoverflow.com/questions/7465713/how-to-detect-iap-crackers remains that this may be more trouble than it's worth to make back the amount of time you'll spend implementing and maintaining a thoroughly un fun batch of code you'd need to get a LOT of extra sales from people who were after all so disinclined to..
backing up prevent from the app in iCloud http://stackoverflow.com/questions/8092256/backing-up-prevent-from-the-app-in-icloud from the app in iCloud The way apple storage guidelines is creating more problem for me because most of the data i am maintaining from the Documents directory files dataBase and some kind of app related stuff .Recently i uploaded a binary file to the..
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 to build ICU so I can use it in an iPhone app How do I configure and build ICU so I can link it to my iPhone app I'm maintaining an iPhone app that uses a SQLite database. Now I have to compile with ICU support enabled SQLITE_ENABLE_ICU . I've got the..
http://stackoverflow.com/questions/9090745/custom-font-in-a-storyboard font. The categories simply implement a new property fontName which changes the current font of the element while maintaining the font size. To specify the font in Storyboard just select the desired element label button textview etc and add a User..
How to enable cancel button with UISearchBar? http://stackoverflow.com/questions/9968595/how-to-enable-cancel-button-with-uisearchbar In my app the cancel button gets disabled when I call resignFirstResponder. Anyone know how to hide the keyboard while maintaining the cancel button in an enabled state I use the following code void searchBarSearchButtonClicked UISearchBar searchBar searchBar..
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