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2014/10/15 ¤U¤È 10:08:59
iphone Programming Glossary: figureHow do I record audio on iPhone with AVAudioRecorder? http://stackoverflow.com/questions/1010343/how-do-i-record-audio-on-iphone-with-avaudiorecorder it correctly. One more thing. In the code I am not showing how to handle metering data but you can figure it out easily. Finally note that the AVAudioRecorder method deleteRecording as of this writing crashes..
How to use NSzombie in xcode? [duplicate] http://stackoverflow.com/questions/1211923/how-to-use-nszombie-in-xcode that is crashing with no error tracing. I can see part of what is going on if I debug but can't figure out which object is zombie ing . Does anybody know how to enable NSZombie in Xcode 4 xcode nszombie..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs with paging enabled will stop at multiples of its frame width or height . So the first step is to figure out how wide you want your pages to be. Make that the width of the UIScrollView . Then set your subview's..
Upload File to FTP Server on iPhone http://stackoverflow.com/questions/1266176/upload-file-to-ftp-server-on-iphone like to implement logic that uploads file to FTP Server. I am new in iPhone development so want to figure out preferred approach. After browsing available API for this task I have managed to find only code..
iPhone viewWillAppear not firing http://stackoverflow.com/questions/131062/iphone-viewwillappear-not-firing with viewWillAppear when you do not create your view hierarchy just right. My problem is I can't figure out what that means. If I create a RootViewController and call addSubView on that controller I would..
Memory leak detection tools in Xcode http://stackoverflow.com/questions/144261/memory-leak-detection-tools-in-xcode
http://stackoverflow.com/questions/2711297/underline-text-in-uilabel UIWebView but it is obviously too heave a class for just text rendering. My thoughts was to figure out the start point and length of each string in each line. And draw a line under it accordingly. I.. of each string in each line. And draw a line under it accordingly. I meet problems at how to figure out the length and start point forthe string. Can anybody help me on this I try to use UILabel textRectForBounds..
iPhone: Detecting user inactivity/idle time since last screen touch http://stackoverflow.com/questions/273450/iphone-detecting-user-inactivity-idle-time-since-last-screen-touch user has not touched the screen for a certain time period you take a certain action I'm trying to figure out the best way to do that. There's this somewhat related method in UIApplication UIApplication sharedApplication..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone thumbnail and display it. I want to display the actual image in an image view but I am unable to figure out how to do this. I tried using the URLs field in the ALAsset object but was unsuccessful. Anybody..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell section and rounded on all 4 corners for sections that contain one cell. Unfortunately I couldn't figure out how to have this mode set automatically so I had to set it in the UITableViewDataSource's cellForRowAtIndexPath..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz idea to get to the annots CGPDFDictionary for each page atleast. after that you should be able to figure it out with help from the PDF spec from Adobe. 1. get the CGPDFDocumentRef. 2. get each page. 3. on..
Can we retrieve the applications currently running in iPhone and iPad http://stackoverflow.com/questions/4312613/can-we-retrieve-the-applications-currently-running-in-iphone-and-ipad this question You can get a list of running processes and from process ids may be you can figure out which ones are system processes and which one are 3rd party apps but anyway I don't believe you..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll search is canceled you can see below that this object is released . All UITableView methods must figure out what table view it will query and which applicable FRC to pull the information from. The FRC delegate.. query and which applicable FRC to pull the information from. The FRC delegate methods must also figure out which tableView to update. It is surprising how much of this is boilerplate code. Relevant bits.. void fetchedResultsController NSFetchedResultsController fetchedResultsController configureCell UITableViewCell theCell atIndexPath NSIndexPath theIndexPath your cell guts here UITableViewCell..
Lock-down iPhone/iPod/iPad so it can only run one app http://stackoverflow.com/questions/5011774/lock-down-iphone-ipod-ipad-so-it-can-only-run-one-app
SplitView like Facebook app on iPhone http://stackoverflow.com/questions/7775195/splitview-like-facebook-app-on-iphone the tableview and makes that view full screen. I want ideas on how to do this because I cannot figure it out myself. Thanks iphone objective c uinavigationcontroller uisplitviewcontroller tableview share..
How to target a specific iPhone version? http://stackoverflow.com/questions/820142/how-to-target-a-specific-iphone-version I've got some code I want to only execute on the latest iPhone SDK 3.0 however I can't seem to figure out a way to target just 3.0 and ignore 2.2.1 etc. There is an ifdef statement but it just seems to..
http://stackoverflow.com/questions/8275578/how-to-get-information-about-free-memory-and-running-processes-in-an-app-store-a evidence I'm already searching for days but can't find any good starting point. How can this app figure all this stuff out without any jailbreaking hacking etc. Until recently I was sure that something like..
View Controllers: How to switch between views programmatically? http://stackoverflow.com/questions/910994/view-controllers-how-to-switch-between-views-programmatically But that's it. So all signs stand for the cleverness of UITabBarController now and I have to figure out how to replicate that right iphone uikit uiviewcontroller uitabbarcontroller share improve this..
How do I record audio on iPhone with AVAudioRecorder? http://stackoverflow.com/questions/1010343/how-do-i-record-audio-on-iphone-with-avaudiorecorder otherwise you will never be able to initialize it correctly. One more thing. In the code I am not showing how to handle metering data but you can figure it out easily. Finally note that the AVAudioRecorder method deleteRecording as of this writing crashes your application. This is why I am removing the recorded..
How to use NSzombie in xcode? [duplicate] http://stackoverflow.com/questions/1211923/how-to-use-nszombie-in-xcode to use NSzombie in xcode duplicate I have an app that is crashing with no error tracing. I can see part of what is going on if I debug but can't figure out which object is zombie ing . Does anybody know how to enable NSZombie in Xcode 4 xcode nszombie share improve this question Environment variables are now..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs cocoa touch share improve this question A UIScrollView with paging enabled will stop at multiples of its frame width or height . So the first step is to figure out how wide you want your pages to be. Make that the width of the UIScrollView . Then set your subview's sizes however big you need them to be and set their centers..
Upload File to FTP Server on iPhone http://stackoverflow.com/questions/1266176/upload-file-to-ftp-server-on-iphone File to FTP Server on iPhone I would like to implement logic that uploads file to FTP Server. I am new in iPhone development so want to figure out preferred approach. After browsing available API for this task I have managed to find only code that uses CFNetwork that looks like not Objective C based ...
iPhone viewWillAppear not firing http://stackoverflow.com/questions/131062/iphone-viewwillappear-not-firing firing I've read numerous posts about people having problems with viewWillAppear when you do not create your view hierarchy just right. My problem is I can't figure out what that means. If I create a RootViewController and call addSubView on that controller I would expect the added view s to be wired up for viewWillAppear events...
Memory leak detection tools in Xcode http://stackoverflow.com/questions/144261/memory-leak-detection-tools-in-xcode
http://stackoverflow.com/questions/2711297/underline-text-in-uilabel that could be multiple lines of string I find some people suggest UIWebView but it is obviously too heave a class for just text rendering. My thoughts was to figure out the start point and length of each string in each line. And draw a line under it accordingly. I meet problems at how to figure out the length and start point.. My thoughts was to figure out the start point and length of each string in each line. And draw a line under it accordingly. I meet problems at how to figure out the length and start point forthe string. Can anybody help me on this I try to use UILabel textRectForBounds limitedToNumberOfLines this should be the drawing..
iPhone: Detecting user inactivity/idle time since last screen touch http://stackoverflow.com/questions/273450/iphone-detecting-user-inactivity-idle-time-since-last-screen-touch screen touch Has anybody implemented a feature where if the user has not touched the screen for a certain time period you take a certain action I'm trying to figure out the best way to do that. There's this somewhat related method in UIApplication UIApplication sharedApplication .idleTimerDisabled It'd be nice if you instead..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone in the device's photo gallery. So far I am able to access the thumbnail and display it. I want to display the actual image in an image view but I am unable to figure out how to do this. I tried using the URLs field in the ALAsset object but was unsuccessful. Anybody knows how this can be done Here's some code where I was able..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell in a section no rounded corners for cells in the middle of a section and rounded on all 4 corners for sections that contain one cell. Unfortunately I couldn't figure out how to have this mode set automatically so I had to set it in the UITableViewDataSource's cellForRowAtIndexPath method. It's a real PITA but I've confirmed..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz graphics share improve this question heres the basic idea to get to the annots CGPDFDictionary for each page atleast. after that you should be able to figure it out with help from the PDF spec from Adobe. 1. get the CGPDFDocumentRef. 2. get each page. 3. on each page use CGPDFDictionaryGetArray pageDictionary Annots..
Can we retrieve the applications currently running in iPhone and iPad http://stackoverflow.com/questions/4312613/can-we-retrieve-the-applications-currently-running-in-iphone-and-ipad we do it for an app for CYDIA Store iphone ios4 share improve this question You can get a list of running processes and from process ids may be you can figure out which ones are system processes and which one are 3rd party apps but anyway I don't believe you can use it in application for appstore. code taken from here..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll should not be used unless there is a search when the search is canceled you can see below that this object is released . All UITableView methods must figure out what table view it will query and which applicable FRC to pull the information from. The FRC delegate methods must also figure out which tableView to update... UITableView methods must figure out what table view it will query and which applicable FRC to pull the information from. The FRC delegate methods must also figure out which tableView to update. It is surprising how much of this is boilerplate code. Relevant bits of the header file @interface BlahViewController UITableViewController.. self.fetchedResultsController self.searchFetchedResultsController void fetchedResultsController NSFetchedResultsController fetchedResultsController configureCell UITableViewCell theCell atIndexPath NSIndexPath theIndexPath your cell guts here UITableViewCell tableView UITableView theTableView cellForRowAtIndexPath NSIndexPath..
Lock-down iPhone/iPod/iPad so it can only run one app http://stackoverflow.com/questions/5011774/lock-down-iphone-ipod-ipad-so-it-can-only-run-one-app
SplitView like Facebook app on iPhone http://stackoverflow.com/questions/7775195/splitview-like-facebook-app-on-iphone exactly as pictured when you click on a tableview item it hides the tableview and makes that view full screen. I want ideas on how to do this because I cannot figure it out myself. Thanks iphone objective c uinavigationcontroller uisplitviewcontroller tableview share improve this question Facebook guys have done brilliant..
How to target a specific iPhone version? http://stackoverflow.com/questions/820142/how-to-target-a-specific-iphone-version to target a specific iPhone version I've got some code I want to only execute on the latest iPhone SDK 3.0 however I can't seem to figure out a way to target just 3.0 and ignore 2.2.1 etc. There is an ifdef statement but it just seems to cover the entire iPhone #if TARGET_OS_IPHONE Any help is appreciated...
http://stackoverflow.com/questions/8275578/how-to-get-information-about-free-memory-and-running-processes-in-an-app-store-a there MUST be an public API to access this information. The evidence I'm already searching for days but can't find any good starting point. How can this app figure all this stuff out without any jailbreaking hacking etc. Until recently I was sure that something like this is absolutely impossible on iOS. I've found this code..
View Controllers: How to switch between views programmatically? http://stackoverflow.com/questions/910994/view-controllers-how-to-switch-between-views-programmatically and initializing the ViewControllerA I get an viewDidLoad. But that's it. So all signs stand for the cleverness of UITabBarController now and I have to figure out how to replicate that right iphone uikit uiviewcontroller uitabbarcontroller share improve this question You can begin from the simplest removeFromSuperview..
How do I record audio on iPhone with AVAudioRecorder? http://stackoverflow.com/questions/1010343/how-do-i-record-audio-on-iphone-with-avaudiorecorder able to initialize it correctly. One more thing. In the code I am not showing how to handle metering data but you can figure it out easily. Finally note that the AVAudioRecorder method deleteRecording as of this writing crashes your application...
How to use NSzombie in xcode? [duplicate] http://stackoverflow.com/questions/1211923/how-to-use-nszombie-in-xcode I have an app that is crashing with no error tracing. I can see part of what is going on if I debug but can't figure out which object is zombie ing . Does anybody know how to enable NSZombie in Xcode 4 xcode nszombie share improve this..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs A UIScrollView with paging enabled will stop at multiples of its frame width or height . So the first step is to figure out how wide you want your pages to be. Make that the width of the UIScrollView . Then set your subview's sizes however..
Upload File to FTP Server on iPhone http://stackoverflow.com/questions/1266176/upload-file-to-ftp-server-on-iphone on iPhone I would like to implement logic that uploads file to FTP Server. I am new in iPhone development so want to figure out preferred approach. After browsing available API for this task I have managed to find only code that uses CFNetwork..
iPhone viewWillAppear not firing http://stackoverflow.com/questions/131062/iphone-viewwillappear-not-firing having problems with viewWillAppear when you do not create your view hierarchy just right. My problem is I can't figure out what that means. If I create a RootViewController and call addSubView on that controller I would expect the added view..
Memory leak detection tools in Xcode http://stackoverflow.com/questions/144261/memory-leak-detection-tools-in-xcode
http://stackoverflow.com/questions/2711297/underline-text-in-uilabel I find some people suggest UIWebView but it is obviously too heave a class for just text rendering. My thoughts was to figure out the start point and length of each string in each line. And draw a line under it accordingly. I meet problems at how.. start point and length of each string in each line. And draw a line under it accordingly. I meet problems at how to figure out the length and start point forthe string. Can anybody help me on this I try to use UILabel textRectForBounds limitedToNumberOfLines..
iPhone: Detecting user inactivity/idle time since last screen touch http://stackoverflow.com/questions/273450/iphone-detecting-user-inactivity-idle-time-since-last-screen-touch feature where if the user has not touched the screen for a certain time period you take a certain action I'm trying to figure out the best way to do that. There's this somewhat related method in UIApplication UIApplication sharedApplication .idleTimerDisabled..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone am able to access the thumbnail and display it. I want to display the actual image in an image view but I am unable to figure out how to do this. I tried using the URLs field in the ALAsset object but was unsuccessful. Anybody knows how this can..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell in the middle of a section and rounded on all 4 corners for sections that contain one cell. Unfortunately I couldn't figure out how to have this mode set automatically so I had to set it in the UITableViewDataSource's cellForRowAtIndexPath method...
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz heres the basic idea to get to the annots CGPDFDictionary for each page atleast. after that you should be able to figure it out with help from the PDF spec from Adobe. 1. get the CGPDFDocumentRef. 2. get each page. 3. on each page use CGPDFDictionaryGetArray..
Can we retrieve the applications currently running in iPhone and iPad http://stackoverflow.com/questions/4312613/can-we-retrieve-the-applications-currently-running-in-iphone-and-ipad ios4 share improve this question You can get a list of running processes and from process ids may be you can figure out which ones are system processes and which one are 3rd party apps but anyway I don't believe you can use it in application..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll is a search when the search is canceled you can see below that this object is released . All UITableView methods must figure out what table view it will query and which applicable FRC to pull the information from. The FRC delegate methods must also.. table view it will query and which applicable FRC to pull the information from. The FRC delegate methods must also figure out which tableView to update. It is surprising how much of this is boilerplate code. Relevant bits of the header file @interface.. void fetchedResultsController NSFetchedResultsController fetchedResultsController configureCell UITableViewCell theCell atIndexPath NSIndexPath theIndexPath your cell guts here UITableViewCell tableView UITableView..
Lock-down iPhone/iPod/iPad so it can only run one app http://stackoverflow.com/questions/5011774/lock-down-iphone-ipod-ipad-so-it-can-only-run-one-app
SplitView like Facebook app on iPhone http://stackoverflow.com/questions/7775195/splitview-like-facebook-app-on-iphone tableview item it hides the tableview and makes that view full screen. I want ideas on how to do this because I cannot figure it out myself. Thanks iphone objective c uinavigationcontroller uisplitviewcontroller tableview share improve this question..
How to target a specific iPhone version? http://stackoverflow.com/questions/820142/how-to-target-a-specific-iphone-version iPhone version I've got some code I want to only execute on the latest iPhone SDK 3.0 however I can't seem to figure out a way to target just 3.0 and ignore 2.2.1 etc. There is an ifdef statement but it just seems to cover the entire iPhone..
http://stackoverflow.com/questions/8275578/how-to-get-information-about-free-memory-and-running-processes-in-an-app-store-a this information. The evidence I'm already searching for days but can't find any good starting point. How can this app figure all this stuff out without any jailbreaking hacking etc. Until recently I was sure that something like this is absolutely..
View Controllers: How to switch between views programmatically? http://stackoverflow.com/questions/910994/view-controllers-how-to-switch-between-views-programmatically I get an viewDidLoad. But that's it. So all signs stand for the cleverness of UITabBarController now and I have to figure out how to replicate that right iphone uikit uiviewcontroller uitabbarcontroller share improve this question You can..
CGAffineTransformMakeRotation counter clockwise always http://stackoverflow.com/questions/13791582/cgaffinetransformmakerotation-counter-clockwise-always is less than the fromValue. It doesn't matter if your values are positive or negative only the relation between them. Figure out what your starting angle is figure out which direction you want to rotate and figure out what your ending angle is...
How can I change the language of the displayed UIKeyboard from within my iPhone app? http://stackoverflow.com/questions/1784935/how-can-i-change-the-language-of-the-displayed-uikeyboard-from-within-my-iphone OS also supports different input methods and keyboard layouts for different languages some of which are shown in Figure 5 4. The input method and layout for the keyboard is determined by the user ™s language preferences. So it appears there's..
Using Cocoa Touch Tutorial: Extract Address Book Address Values on iPhone OS http://stackoverflow.com/questions/1994870/using-cocoa-touch-tutorial-extract-address-book-address-values-on-iphone-os Set up an NSArray and copy the values in. NSArray theArray id ABMultiValueCopyArrayOfAllValues multi autorelease Figure out which values we want and store the index. const NSUInteger theIndex ABMultiValueGetIndexForIdentifier multi identifier..
javascript scroll event for iPhone/iPad? http://stackoverflow.com/questions/2863547/javascript-scroll-event-for-iphone-ipad events until the user stops panning ”an onscroll event is generated when the page stops moving and redraws ”as shown in Figure 6 1. Similarly scroll with 2 fingers fires onscroll only after you've stopped scrolling. The usual way of installing the..
Figure out UIBarButtonItem frame in window? http://stackoverflow.com/questions/2994354/figure-out-uibarbuttonitem-frame-in-window out UIBarButtonItem frame in window UIBarButtonItem does not extend UIView so there is nothing like a frame property. But..
How can I combine multiple iPhone applications in to one application? http://stackoverflow.com/questions/3054788/how-can-i-combine-multiple-iphone-applications-in-to-one-application two applications into one but if your individual applications are reasonably well factored this should be trivial. Figure out the UI presentation you're going to use to switch between the two applications tabs or a list view or whatever then..
Warning: The Copy Bundle Resources build phase contains this target's Info.plist file http://stackoverflow.com/questions/3095612/warning-the-copy-bundle-resources-build-phase-contains-this-targets-info-plist this warning because you probably added your Info.plist file to your Copy Bundle Resources build phase as shown in Figure figure shown The INFOPLIST_FILE build setting specifies the name of the Info.plist associated with your target. When building..
Redrawing UIScrollView contents after every zoom http://stackoverflow.com/questions/3313947/redrawing-uiscrollview-contents-after-every-zoom withView UIView view atScale float scale CGFloat oldZoomScale contentView.zoomScale CGSize size self.bounds.size Figure out where the scroll view was centered so that we can fix up its offset after adjusting the scaling CGPoint contentCenter.. new size contentView.frame CGRectMake 0 0 newContentSize.width newContentSize.height self.contentSize newContentSize Figure out the new contentOffset so that the contentView doesn't appear to move CGPoint newContentOffset CGPointMake contentCenter.x..
Drawing app on iPad using OpenGL http://stackoverflow.com/questions/4606680/drawing-app-on-ipad-using-opengl i 1 CGPointValue .y invertedYThirdCoord self.bounds.size.height currentStroke objectAtIndex i 2 CGPointValue .y Figure our how many dots you need count MAX ceilf sqrtf currentStroke objectAtIndex i 2 CGPointValue .x currentStroke objectAtIndex..
Figure out time by latitude/longitude? http://stackoverflow.com/questions/4632100/figure-out-time-by-latitude-longitude out time by latitude longitude Here's the deal. I have a latitude longitude set of a location. I need to figure out what..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers Fair 'nuff. A bit further on we get this slide telling us what we should do. Page 18 51 Best Practices for Data Flow Figure out exactly what needs to be communicated Define input parameters for your view controller For communicating back up the..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare 2.1 D i j Dist i j MIN D i 1 j D i j 1 D i 1 j 1 Here D i j is the i j element of the cost matrix see below. Check Figure 3 of that paper to see this recurrence relation is applied. In short columns are computed first starting from D 1 1 D 0..
iPhone: Tracking/Identifying individual touches http://stackoverflow.com/questions/913086/iphone-tracking-identifying-individual-touches all touch objects for the current multi touch sequence and can provide touch objects specific to a view or window see Figure 3 2 . A touch object is persistent for a given finger during a sequence and UIKit mutates it as it tracks the finger throughout..
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