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2014/10/15 ¤U¤È 10:14:13
iphone Programming Glossary: simplifiedHow do you implement a Highpass filter for the IPhone accelerometer? http://stackoverflow.com/questions/142944/how-do-you-implement-a-highpass-filter-for-the-iphone-accelerometer accelerometer didAccelerate UIAcceleration acceleration Subtract the low pass value from the current value to get a simplified high pass filter rollingX acceleration.x kFilteringFactor rollingX 1.0 kFilteringFactor rollingY acceleration.y kFilteringFactor..
iOS Hiding tab bar in iOS 6 creates black bar (fix for iOS 6 breaks iOS 7!) http://stackoverflow.com/questions/19006545/ios-hiding-tab-bar-in-ios-6-creates-black-bar-fix-for-ios-6-breaks-ios-7 and our team trying it out. So make sure you download the latest revision from there. The method signature has been simplified to void setTabBarHidden BOOL hidden animated BOOL animated You can call it like this within your UIViewController subclass..
Difference between @interface declaration and @property declaration http://stackoverflow.com/questions/2159725/difference-between-interface-declaration-and-property-declaration aVar myclass setAVar 24 Writing these accessor and mutator methods can get quite tedious so in Objective C 2.0 Apple simplified it for us. We can now write In header .h file @property nonatomic assign int aVar In implementation .m file @synthesize..
iPhone + UITableView + place an image for separator http://stackoverflow.com/questions/2227420/iphone-uitableview-place-an-image-for-separator to set the fields in the cell cell setItem self.items objectAtIndex indexPath.row return cell And then here's my simplified implementation of SavedTableCell.h #import UIKit UIKit.h #import Item.h @interface SavedTableCell UITableViewCell my cell.. item @property nonatomic retain UILabel primaryLabel @property nonatomic retain UIImageView icon @end And here is a simplified SavedTableCell.m #import SavedTableCell.h @implementation SavedTableCell @synthesize primaryLabel icon id initWithReuseIdentifier..
Obtaining an NSDecimalNumber from a locale specific string? http://stackoverflow.com/questions/317311/obtaining-an-nsdecimalnumber-from-a-locale-specific-string mode available on the iPhone but indicating to the formatter that I want to generate decimal numbers. Note that I've simplified my example I'm actually dealing with currency strings . However I'm obviously doing something wrong for it to return a value..
iPhone Smooth Transition from One Video To Another http://stackoverflow.com/questions/3410003/iphone-smooth-transition-from-one-video-to-another of a person walking.....the user taps the video and a seamless transition occurs to a video of a person running over simplified example My first thought was to create 2 movie players and use transitions between the 2 view elements. But movie player..
Find a point, a given distance, along a simple cubic bezier curve. (On an iPhone!) http://stackoverflow.com/questions/4058979/find-a-point-a-given-distance-along-a-simple-cubic-bezier-curve-on-an-iphone in your cocoa application How do you find points and the tangents along the curve Later for a complete and simplified solution based on Michal's answer below click to Find the tangent of a point on a cubic bezier curve on an iPhone . iphone..
Can example “GLImageProcessing” work with multi filters http://stackoverflow.com/questions/4375479/can-example-glimageprocessing-work-with-multi-filters towards grey contrast 1.0 extrapolates away from grey Here the general extrapolation 2 Src t Dst 0.5 t can be simplified because Dst is a constant grey . That results in 2 Src t 0.25 0.5 t Unit0 calculates Src t Unit1 adds 0.25 0.5 t Since 0.5..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion slowing down artificially that means introducing a virtual deceleration even if there is no real counterpart. A very simplified example if vX 0 lastAccelerationXTimeStamp 0.3sec vX 0.9 ` You will need a combination of such conditions to tame the beast...
How to steal touches from UIScrollView? http://stackoverflow.com/questions/4629499/how-to-steal-touches-from-uiscrollview UIEvent event for UITouch touch in touches touch.view touchesBegan touches withEvent event The above code is a simplified version. I also make sure that the view is a picker view or one of it's subviews and set the appropriate state for the gesture..
How To Draw line on touch event? http://stackoverflow.com/questions/4669490/how-to-draw-line-on-touch-event void drawRect CGRect rect UIColor redColor set for UIBezierPath path in paths path stroke Note that this is simplified a lot. If you draw many lines performance will suffer and eventually you'll want to cache the drawing in a bitmap image..
http://stackoverflow.com/questions/4772341/is-it-possible-for-a-uiwebview-to-save-and-autofill-previously-entered-form-valu YES error nil GETTING DATA void webViewDidFinishLoad UIWebView webView verify view is on the login page of the site simplified NSURL requestURL self.webView.request URL if requestURL.host isEqualToString @ www.mydomain.com check for stored login..
How to Parse XML File using xmlparsing on iphone? http://stackoverflow.com/questions/5715174/how-to-parse-xml-file-using-xmlparsing-on-iphone for XML parsing and XPath queries in Cocoa which also provides a tutorial on how to use it. That XPathQuery class is a simplified way to parse XML. I recommend it unless you want to write the same code yourself which doesn't seem the case. With that..
http://stackoverflow.com/questions/5960731/strange-behavior-of-select-dropdowns-onchange-js-event-when-using-next-on-m onchange is fired and the next in focus dropdown's list items are repopulated while it is in focus. Here is the code simplified DOCTYPE html PUBLIC W3C DTD XHTML 1.0 Transitional EN http www.w3.org TR xhtml1 DTD xhtml1 transitional.dtd html xmlns http..
How call SOAP based web-Service using PhoneGap in iPhone? http://stackoverflow.com/questions/5974295/how-call-soap-based-web-service-using-phonegap-in-iphone on mobile phones might be slow. So you could use some kind of weserver to talk to the webservice end send some simplified json to your phone or you can take a look at this tutorial from ibm describing how to call a webservice directly from javascript..
iPhone: Can a dev other than team agent build an app for distribution http://stackoverflow.com/questions/629057/iphone-can-a-dev-other-than-team-agent-build-an-app-for-distribution of an app. Thank you iphone ios distribution share improve this question NOTE This process is heavily simplified in XCode 4 although not personally tested by me with importing and exporting of developer profiles through the Organizer..
Syncing objects between two disparate systems, best approach? http://stackoverflow.com/questions/636675/syncing-objects-between-two-disparate-systems-best-approach peer so that only modified rows need to be transmitted. If this is going to be a star topology the leaves can use a simplified schema where the last synced version is stored in each table. Some form of soft deletes are required in order to support..
Getting the visible rect of an UIScrollView's content http://stackoverflow.com/questions/868288/getting-the-visible-rect-of-an-uiscrollviews-content ought to be scrollView.bounds.size rather than scrollView.contentSize which is the size of the content view. Also simplified the math a bit and didn't quite see the use for the isless which would break the code whenever it's greater. share improve..
Copy Folder (w/contents) from bundle to Documents directory - iOS http://stackoverflow.com/questions/9830061/copy-folder-w-contents-from-bundle-to-documents-directory-ios @ plans.gallery BOOL success fileManager fileExistsAtPath documentDBFolderPath if success NSLog @ Success return else simplified method with more common and helpful method resourceDBFolderPath NSBundle mainBundle pathForResource @ plans ofType @ gallery..
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