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2014/10/15 ¤U¤È 10:15:06
iphone Programming Glossary: trickyOptimizing CLLocationManager/CoreLocation to retrieve data points faster on the iPhone http://stackoverflow.com/questions/1081219/optimizing-cllocationmanager-corelocation-to-retrieve-data-points-faster-on-the locationManager to do it's thing and it should try and get you a new value. 4 The core location delegate routine is tricky to get accurate updates out of. When your App first initializes you can be off in accuracy by 1000 meters or more thus one..
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 a combination of IOSurface and IOMobileFramebuffer to record the video or UIGetScreenImage for the other mode. It is a tricky app that WILL get pulled from the AppStore so if you want it you better get it now. UPDATE It appears that this app was..
Drop Shadow on UITextField text http://stackoverflow.com/questions/1274168/drop-shadow-on-uitextfield-text I don't think you get built in support for text shadows here the way you do with UILabel . Two ideas 1 Moderately tricky to code. Add a second UITextField behind the original at a very small offset maybe by 0.2 0.8 . You can listen to every..
UISearchBar Sample Code [closed] http://stackoverflow.com/questions/1302962/uisearchbar-sample-code Sample Code closed Implementing a searchbar can be tricky business and I'm struggling to make it work for my situation. Here's a collection of some of the sample code I've found..
Measuring velocity via iPhone SDK http://stackoverflow.com/questions/1994018/measuring-velocity-via-iphone-sdk possible to do this but seems extremely complicated and error prone. Translating from acceleration to velocity can be tricky to begin with plus the iPhone accelerometer data can be noisy . I'm familiar with the SDK example that demonstrates using..
Reducing the space between sections of the UITableView http://stackoverflow.com/questions/2817308/reducing-the-space-between-sections-of-the-uitableview anything. Any suggestions Thanks in advance. “f iphone ios uitableview share improve this question it was a bit tricky and i am not completely sure how i solved it but try this code CGFloat tableView UITableView tableView heightForHeaderInSection..
Is it possible to configure a UITableView to allow multiple-selection? http://stackoverflow.com/questions/308081/is-it-possible-to-configure-a-uitableview-to-allow-multiple-selection I've tried overriding setSelected animated for each UITableViewCell but trying to fudge the required behavior is tricky as it's difficult to separate the real unselections from the ones where the UITableView thinks I've unselected due to selection..
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk iOS version. For a quick shot of how to do this cf. step 7 in the next section. Note that you are now entering some tricky terrain. Your usual Xcode 3.2.3 compiler will no longer be enforcing your compliance to 3.0 only calls nor does it have..
How can I pop a view from a UINavigationController and replace it with another in one operation? http://stackoverflow.com/questions/410471/how-can-i-pop-a-view-from-a-uinavigationcontroller-and-replace-it-with-another-i I've discovered you don't need to manually mess with the viewControllers property at all. Basically there are 2 tricky things about this. self.navigationController will return nil if self is not currently on the navigation controller's stack...
Is it a problem when an iAd may be obscured? http://stackoverflow.com/questions/4160010/is-it-a-problem-when-an-iad-may-be-obscured view that has successfully loaded an ad will NOT try to load another one until it is onscreen. Makes sense right The tricky part is.... 4b you also won't get any new delegate messages from that bannerView so if you're not moving the bannerView..
http://stackoverflow.com/questions/4238760/how-to-make-a-uitableviewcell-with-a-uitextview-inside-that-dynamically-adjust Tony iphone uitableviewcell uitextview share improve this question Looking at this you need to be somewhat tricky. You need to calculate the height of the textView dynamically and based on the Height of the TextView you need to return..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file you'll see errors in the debug console that look like this Error can't get CIDs for glyphs for 'TimesNewRomanPSMT' The tricky aspect is that the resulting PDF will render fine in some PDF readers but fail to render in other places. So if you have.. workaround I've used libHaru successfully on iPhone as a replacement for CoreGraphics PDF generation. It was a little tricky getting libHaru to build with my project initially but once I got my project setup properly it worked fine for my needs...
http://stackoverflow.com/questions/4949809/pdf-viewer-ipad-app Search Highlight was by far the most difficult followed by text selection. Keeping memory usage low for large PDF's is tricky too. I cant share my source. But here's someone who has a free library that looks promising http mobfarm.eu fastpdfkit https..
Can somebody explain the process of a UIViewController birth (which method follows which)? http://stackoverflow.com/questions/5107604/can-somebody-explain-the-process-of-a-uiviewcontroller-birth-which-method-follo its objects add any connections between them and take care of the memory management for you. Things get a little more tricky with nib files since so much happens behind the scenes. The awakeFromNib method is called for every object that is instantiated..
Scrolling with two fingers with a UIScrollView http://stackoverflow.com/questions/787212/scrolling-with-two-fingers-with-a-uiscrollview touchesEnded finished with touchesEnded or touchesCancelled especially when dealing with UIScrollView. #2 can be tricky. If you decide the event is for UIScrollView another trick is to make UIScrollView believe your two finger gesture is actually..
Retain Cycles: Why is that such a bad thing? http://stackoverflow.com/questions/791322/retain-cycles-why-is-that-such-a-bad-thing management share improve this question Cycles aren't bad but they are often avoided because they can make it tricky to ensure you haven't got memory leaks. Leaks occur especially when objects are 'reference counted'. In a language or system.. very easy to get wrong. This is one of the main reasons that memory leaks occur. To avoid the risk of leaks and the tricky job of breaking cycles correctly when you no longer need a group of objects programmers usually try to avoid cycles. This..
How to trigger MKAnnotationView's callout view without touching the pin? http://stackoverflow.com/questions/978897/how-to-trigger-mkannotationviews-callout-view-without-touching-the-pin
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