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2014/10/15 ¤U¤È 10:04:52
iphone Programming Glossary: callHow to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk @end 4 Then implement this method in the .m file of your view controller which you can call Checks if we have an internet connection or not void testInternetConnection internetReachableFoo Reachability.. the .m file of where you are implementing the check you can place this in one of the first methods called init or viewWillAppear or viewDidLoad etc void viewWillAppear BOOL animated check for internet connection.. notification 8 Set up the method for when the notification gets sent and set whatever checks or call whatever methods you may have set up in my case I just set a BOOL void checkNetworkStatus NSNotification..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone urlRequest delegate self if connection self uploadSucceeded NO Now wait for the URL connection to call us back. Uploader Private postRequestWithURL boundry data Creates a HTML POST request. Results..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how working through this problem and ultimately decided to take a different approach. I replaced the call to show the action sheet with a modal view controller containing a simple tableview. There are many.. SimpleTableViewControllerDelegate with a required method itemSelectedatRow and a weak property called delegate of type id SimpleTableViewControllerDelegate . This is how we will pass the selection back.. In SimpleTableViewController.m implement the tableview data source and delegate methods calling itemSelectedatRow in tableView didSelectRowAtIndexPath . This approach has the added benefit of being..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone the blog post you link to does seem to work pretty decently... aside from the extra comma in each call to CCCrypt which caused compile errors. A later comment on that post includes this adapted code which.. you include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript to call Objective C from Javascript I have a WebView and I want to call a view in Objective C from JavaScript... to call Objective C from Javascript I have a WebView and I want to call a view in Objective C from JavaScript. Does someone know how I can do this I have this code in my ViewController..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language preferred language for your application with English and French as fallbacks. You would want to call this sometime early in your application's startup. You can read more about language locale preferences..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation around the older SDK limitations. I personally have been told by Apple to remove the method call on my next update so I am not yet sure if having a hack for older devices will get through the approval..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application certain user actions. After cleaning up memory the app allocated what's the appropriate method to call to terminate the application iphone objective c cocoa touch ipad share improve this question Have..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone They bend your head a little but if you think of them as notification selectors or callbacks it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback... it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback. So largeImage wont be valid yet. largeImage needs to be an instance variable not scoped to the.. with iOS5 maybe single core devices so I couldnt rely on the image to be available directly after calling findLargeImage . So I changed it to call out to a delegate. @protocol HiresImageDelegate NSObject..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints UIScrollview But the same issues keep cropping up. UIImage Method PDF's in a UIImage don't optically scale as well as a Layer approach. The CPU and memory hit on generating the UIImages from a PDFcontext.. render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault.. but instead draw the image in the layer when zooming is 1. Those tiles will be released automatically when memory warnings are issued. Whenever the user start zooming I acquire the CGPDFPage and render..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c basic concepts. In Cocoa each object keeps track of how many times it is being referenced specifically the NSObject base class implements this . By calling retain on an object you are telling it that you.. of how many times it is being referenced specifically the NSObject base class implements this . By calling retain on an object you are telling it that you want to up its reference count by one. By calling.. calling retain on an object you are telling it that you want to up its reference count by one. By calling release you tell the object you are letting go of it and its reference count is decremented. If after..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now not use the uniqueIdentifier property. To create a unique identifier specific to your app you can call the CFUUIDCreate function to create a UUID and write it to the defaults database using the NSUserDefaults.. on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying the MAC to specifically thwart the MAC as base for an ID scheme. So you now really should use UIDevice identifierForVendor..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown methods so you could do this directly with the runtime API as well . These function pointers are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close to the actual.. ARC needs including the two implicit hidden arguments self and _cmd of every Objective C method call . This is handled in the third line the void on the right hand side simply tells the compiler that you.. what you're doing and not to generate a warning since the pointer types don't match . Finally you call the function pointer. Complex Example When the selector takes arguments or returns a value you'll have..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk @interface MyViewController Reachability internetReachableFoo @end 4 Then implement this method in the .m file of your view controller which you can call Checks if we have an internet connection or not void testInternetConnection internetReachableFoo Reachability reachabilityWithHostname @ www.google.com Internet.. to the .m file where you are implementing the check 7 In the .m file of where you are implementing the check you can place this in one of the first methods called init or viewWillAppear or viewDidLoad etc void viewWillAppear BOOL animated check for internet connection NSNotificationCenter defaultCenter addObserver self.. hostReachable startNotifier now patiently wait for the notification 8 Set up the method for when the notification gets sent and set whatever checks or call whatever methods you may have set up in my case I just set a BOOL void checkNetworkStatus NSNotification notice called after network status changes NetworkStatus..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone connection NSURLConnection alloc initWithRequest urlRequest delegate self if connection self uploadSucceeded NO Now wait for the URL connection to call us back. Uploader Private postRequestWithURL boundry data Creates a HTML POST request. Results The HTML POST request. Side effects None NSURLRequest..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how invalid context errors in iOS 7. I just spent a few hours working through this problem and ultimately decided to take a different approach. I replaced the call to show the action sheet with a modal view controller containing a simple tableview. There are many ways to accomplish this. Here's one way that I just implemented.. table. Also in SimpleTableViewController.h create a protocol SimpleTableViewControllerDelegate with a required method itemSelectedatRow and a weak property called delegate of type id SimpleTableViewControllerDelegate . This is how we will pass the selection back to the parent controller. In SimpleTableViewController.m implement.. This is how we will pass the selection back to the parent controller. In SimpleTableViewController.m implement the tableview data source and delegate methods calling itemSelectedatRow in tableView didSelectRowAtIndexPath . This approach has the added benefit of being fairly reusable. To use import the SimpleTableViewController..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone to know exactly which problems you're encountering. However the blog post you link to does seem to work pretty decently... aside from the extra comma in each call to CCCrypt which caused compile errors. A later comment on that post includes this adapted code which works for me and seems a bit more straightforward. If you.. which works for me and seems a bit more straightforward. If you include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make sense to print such values. int main int argc const char..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript to call Objective C from Javascript I have a WebView and I want to call a view in Objective C from JavaScript. Does someone know how I can do this I have this code in.. to call Objective C from Javascript I have a WebView and I want to call a view in Objective C from JavaScript. Does someone know how I can do this I have this code in my ViewController BOOL webView UIWebView webView2 shouldStartLoadWithRequest..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language to make the change immediate This would make German the preferred language for your application with English and French as fallbacks. You would want to call this sometime early in your application's startup. You can read more about language locale preferences here Internationalization Programming Topics Getting the..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application an iPhone app and I need to force it to exit due to certain user actions. After cleaning up memory the app allocated what's the appropriate method to call to terminate the application iphone objective c cocoa touch ipad share improve this question Have you tried exit 0 Alternatively NSThread mainThread exit although..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone ios #documentation Cocoa Conceptual Blocks Articles 00_Introduction.html They bend your head a little but if you think of them as notification selectors or callbacks it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback. So largeImage wont be valid yet. largeImage needs to.. but if you think of them as notification selectors or callbacks it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback. So largeImage wont be valid yet. largeImage needs to be an instance variable not scoped to the method. I use this construct to do this when using the method.. update When the result block fires seems to be a bit slower with iOS5 maybe single core devices so I couldnt rely on the image to be available directly after calling findLargeImage . So I changed it to call out to a delegate. @protocol HiresImageDelegate NSObject @optional void hiresImageAvailable UIImage aimage @end and..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints have sample code to show how draw a large PDF in a Zoomable UIScrollview But the same issues keep cropping up. UIImage Method PDF's in a UIImage don't optically scale as well as a Layer approach. The CPU and memory hit on generating the UIImages from a PDFcontext limits prevents using it to create a real time render of.. another design approach is this one Note that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault before CGContextDrawPDFPage to reduce memory.. advance in a separate thread. I don't overlay with a UIImage but instead draw the image in the layer when zooming is 1. Those tiles will be released automatically when memory warnings are issued. Whenever the user start zooming I acquire the CGPDFPage and render it using the appropriate CTM. The code in void drawLayer CALayer..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c is really just a special case once you understand the basic concepts. In Cocoa each object keeps track of how many times it is being referenced specifically the NSObject base class implements this . By calling retain on an object you are telling it that you want to up its reference count by one. By calling release.. the basic concepts. In Cocoa each object keeps track of how many times it is being referenced specifically the NSObject base class implements this . By calling retain on an object you are telling it that you want to up its reference count by one. By calling release you tell the object you are letting go of it and its.. specifically the NSObject base class implements this . By calling retain on an object you are telling it that you want to up its reference count by one. By calling release you tell the object you are letting go of it and its reference count is decremented. If after calling release the reference count is now zero then that..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now from the documentation is... Special Considerations Do not use the uniqueIdentifier property. To create a unique identifier specific to your app you can call the CFUUIDCreate function to create a UUID and write it to the defaults database using the NSUserDefaults class. However this value won't be the same if a user..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown and it works through some lower level Objective C runtime methods so you could do this directly with the runtime API as well . These function pointers are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close to the actual method signature of the method but will not always match.. it to a function pointer that includes all of the details that ARC needs including the two implicit hidden arguments self and _cmd of every Objective C method call . This is handled in the third line the void on the right hand side simply tells the compiler that you know what you're doing and not to generate a warning since.. the right hand side simply tells the compiler that you know what you're doing and not to generate a warning since the pointer types don't match . Finally you call the function pointer. Complex Example When the selector takes arguments or returns a value you'll have to change things a bit SEL selector NSSelectorFromString..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk internetReachableFoo @end 4 Then implement this method in the .m file of your view controller which you can call Checks if we have an internet connection or not void testInternetConnection internetReachableFoo Reachability reachabilityWithHostname.. the check 7 In the .m file of where you are implementing the check you can place this in one of the first methods called init or viewWillAppear or viewDidLoad etc void viewWillAppear BOOL animated check for internet connection NSNotificationCenter.. patiently wait for the notification 8 Set up the method for when the notification gets sent and set whatever checks or call whatever methods you may have set up in my case I just set a BOOL void checkNetworkStatus NSNotification notice called after..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone initWithRequest urlRequest delegate self if connection self uploadSucceeded NO Now wait for the URL connection to call us back. Uploader Private postRequestWithURL boundry data Creates a HTML POST request. Results The HTML POST request...
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how spent a few hours working through this problem and ultimately decided to take a different approach. I replaced the call to show the action sheet with a modal view controller containing a simple tableview. There are many ways to accomplish this... create a protocol SimpleTableViewControllerDelegate with a required method itemSelectedatRow and a weak property called delegate of type id SimpleTableViewControllerDelegate . This is how we will pass the selection back to the parent controller... back to the parent controller. In SimpleTableViewController.m implement the tableview data source and delegate methods calling itemSelectedatRow in tableView didSelectRowAtIndexPath . This approach has the added benefit of being fairly reusable...
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone However the blog post you link to does seem to work pretty decently... aside from the extra comma in each call to CCCrypt which caused compile errors. A later comment on that post includes this adapted code which works for me and seems.. straightforward. If you include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make sense to print..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript to call Objective C from Javascript I have a WebView and I want to call a view in Objective C from JavaScript. Does someone know.. to call Objective C from Javascript I have a WebView and I want to call a view in Objective C from JavaScript. Does someone know how I can do this I have this code in my ViewController BOOL webView..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language would make German the preferred language for your application with English and French as fallbacks. You would want to call this sometime early in your application's startup. You can read more about language locale preferences here Internationalization..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation that you are working around the older SDK limitations. I personally have been told by Apple to remove the method call on my next update so I am not yet sure if having a hack for older devices will get through the approval process. share..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application it to exit due to certain user actions. After cleaning up memory the app allocated what's the appropriate method to call to terminate the application iphone objective c cocoa touch ipad share improve this question Have you tried exit 0..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone Articles 00_Introduction.html They bend your head a little but if you think of them as notification selectors or callbacks it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback. So largeImage.. selectors or callbacks it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback. So largeImage wont be valid yet. largeImage needs to be an instance variable not scoped to the method. I use this construct.. to be a bit slower with iOS5 maybe single core devices so I couldnt rely on the image to be available directly after calling findLargeImage . So I changed it to call out to a delegate. @protocol HiresImageDelegate NSObject @optional void hiresImageAvailable..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints large PDF in a Zoomable UIScrollview But the same issues keep cropping up. UIImage Method PDF's in a UIImage don't optically scale as well as a Layer approach. The CPU and memory hit on generating the UIImages from a PDFcontext limits prevents.. Note that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault before.. overlay with a UIImage but instead draw the image in the layer when zooming is 1. Those tiles will be released automatically when memory warnings are issued. Whenever the user start zooming I acquire the CGPDFPage and render it using the appropriate..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c you understand the basic concepts. In Cocoa each object keeps track of how many times it is being referenced specifically the NSObject base class implements this . By calling retain on an object you are telling it that you want to up its reference.. object keeps track of how many times it is being referenced specifically the NSObject base class implements this . By calling retain on an object you are telling it that you want to up its reference count by one. By calling release you tell the.. implements this . By calling retain on an object you are telling it that you want to up its reference count by one. By calling release you tell the object you are letting go of it and its reference count is decremented. If after calling release..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now Considerations Do not use the uniqueIdentifier property. To create a unique identifier specific to your app you can call the CFUUIDCreate function to create a UUID and write it to the defaults database using the NSUserDefaults class. However.. device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying the MAC to specifically thwart the MAC as base for an ID scheme. So you now really should use UIDevice identifierForVendor or create a per install..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown Objective C runtime methods so you could do this directly with the runtime API as well . These function pointers are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close to the actual method signature.. of the details that ARC needs including the two implicit hidden arguments self and _cmd of every Objective C method call . This is handled in the third line the void on the right hand side simply tells the compiler that you know what you're.. that you know what you're doing and not to generate a warning since the pointer types don't match . Finally you call the function pointer. Complex Example When the selector takes arguments or returns a value you'll have to change things..
UIButton in UITableView cell like “Delete Event” http://stackoverflow.com/questions/1076785/uibutton-in-uitableview-cell-like-delete-event handler for the button would use the tag value of the sender to look up the underlying data in the dataSource list. Call release on the button after you've done an addSubview . That way the retain count will fall to zero and the object will..
Upload File to FTP Server on iPhone http://stackoverflow.com/questions/1266176/upload-file-to-ftp-server-on-iphone
iPhone-SDK:Call a function in the background? http://stackoverflow.com/questions/1421817/iphone-sdkcall-a-function-in-the-background SDK Call a function in the background Is it possible to call my function in the background after certain interval programmatically..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript 2 Airship shared displayStoreFront This is the code to open the Store NSLog components objectAtIndex 3 param2 Call your method in Objective C method using the above... return NO return YES Return YES to make sure regular navigation works..
How to draw an UIImage or directly in -drawRect:? http://stackoverflow.com/questions/1663815/how-to-draw-an-uiimage-or-directly-in-drawrect
Accessing the iPhone's Call log with the iPhone SDK http://stackoverflow.com/questions/341622/accessing-the-iphones-call-log-with-the-iphone-sdk the iPhone's Call log with the iPhone SDK I am building application that required some data from iPhone's Call log read only . The call log.. the iPhone's Call log with the iPhone SDK I am building application that required some data from iPhone's Call log read only . The call log is a sqlite db located at User Library CallHistory call_history.db . I used a jailbroken device.. that required some data from iPhone's Call log read only . The call log is a sqlite db located at User Library CallHistory call_history.db . I used a jailbroken device to extract the log. However trying to open this location using the sqlite_open3..
viewWillAppear, viewDidAppear not being called, not firing http://stackoverflow.com/questions/3560669/viewwillappear-viewdidappear-not-being-called-not-firing or UITabBarController my case in a UIViewController somehow interrupts with the calling of these methods. Solution Call them manually in the UIViewController that contains the aforementioned UINavigationController UITabBarController. For example..
remove styling of telephone numbers http://stackoverflow.com/questions/3736807/remove-styling-of-telephone-numbers on an iPhone Like a specific Mobile Safari tag or CSS to add I only have this in place for the number p id phone text Call us on strong 44 0 20 7194 8000 strong p And there are no hyperlinks but iPhone still renders this text number as a hyperlink...
Call the official *Settings* app from my app on iPhone http://stackoverflow.com/questions/4496813/call-the-official-settings-app-from-my-app-on-iphone the official Settings app from my app on iPhone At one point in my app I would like to redirect the user to the official..
UIWebView - Enabling Action Sheets on <img> tags http://stackoverflow.com/questions/5163831/uiwebview-enabling-action-sheets-on-img-tags coord void sendEvent UIEvent event NSSet touches event touchesForWindow self touches retain super sendEvent event Call super to make sure the event is processed as usual if touches count 1 We're only interested in one finger events UITouch.. NSNotification notification webView stringByEvaluatingJavaScriptFromString @ document.documentElement.style.webkitTouchCallout 'none' It's only a little change but it fixes the annoying little bug where you get 2 menus appear the standard one and..
NSInternalInconsistencyException Could not load nib in bundle http://stackoverflow.com/questions/5415252/nsinternalinconsistencyexception-could-not-load-nib-in-bundle mobile Applications 4B0202F9 5961 4AC7 A327 604620AF1F94 VisualMath.app loaded ' with name 'ThemePickerController'' Call stack at first throw 0 CoreFoundation 0x3182464f __exceptionPreprocess 114 1 libobjc.A.dylib 0x3651dc5d objc_exception_throw.. sendEvent 298 20 UIKit 0x32eccc53 _UIApplicationHandleEvent 5090 21 GraphicsServices 0x32977e77 PurpleEventCallback 666 22 CoreFoundation 0x317fba97 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ 26 23 CoreFoundation 0x317fd83f..
Core Data and threads / Grand Central Dispatch http://stackoverflow.com/questions/7540801/core-data-and-threads-grand-central-dispatch @selector mergeChanges name NSManagedObjectContextDidSaveNotification object newMoc Do the work Your method here Call save on context this will send a save notification and call the method below BOOL success newMoc save error if success Deal..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample to store the item. Use the container directory URL to build a new URL that specifies the item ™s location in iCloud. Call the setUbiquitous itemAtURL destinationURL error method of NSFileManager to move the item to iCloud. Never call this method..
How do I build an xcode project for the itunes store? http://stackoverflow.com/questions/803683/how-do-i-build-an-xcode-project-for-the-itunes-store tab click on your existing Ad Hoc distribution configuration that already works and click Duplicate button. Call the new one App Store Click on Build tab then under Code Signing Code Signing Entity in the popup choose iPhone Distribution..
Call a parent view controller (through a navigationcontroller) http://stackoverflow.com/questions/8055052/call-a-parent-view-controller-through-a-navigationcontroller a parent view controller through a navigationcontroller Currently I add a viewcontroller using pushViewController animated.. In your child view controller .h file @protocol ChildViewControllerDelegate NSObject void parentMethodThatChildCanCall @end @interface ChildViewController UIViewController @property assign id ChildViewControllerDelegate delegate In your child.. @implementation ChildViewController @synthesize delegate to call parent method self.delegate parentMethodThatChildCanCall In parent view controller .h file @interface parentViewController ChildViewControllerDelegate In parent view controller..
How do I draw a shadow under a UIView? http://stackoverflow.com/questions/805872/how-do-i-draw-a-shadow-under-a-uiview CGContextSetShadow to draw the shadow but the Quartz 2D programming guide is a little vague Save the graphics state. Call the function CGContextSetShadow passing the appropriate values. Perform all the drawing to which you want to apply shadows...
iPhone Storyboard: different scene for portrait and landscape http://stackoverflow.com/questions/8777629/iphone-storyboard-different-scene-for-portrait-and-landscape orientation share improve this question When you add a view controller to the storyboard it comes with a view. Call that the container view. Add two views to the container view a portrait view and a landscape view. Set the dimension of..
Consume WCF Web Service using Objective-C on iPhone http://stackoverflow.com/questions/982622/consume-wcf-web-service-using-objective-c-on-iphone Variables used NSMutableData webData NSMutableString soapResults NSXMLParser xmlParser BOOL recordResults Web Service Call NSString soapMessage NSString stringWithFormat @ xml version 1.0 encoding UTF 8 n SOAP ENV Envelope n xmlns xsd http www.w3.org..
Sqlite Database Load Fails - Issue with sqlite prepare statement - iPhone - xCode 4.3.1 http://stackoverflow.com/questions/9887785/sqlite-database-load-fails-issue-with-sqlite-prepare-statement-iphone-xcod I am having issues with the following code which loads an SQLite database. NSArray getDatabase NSLog @ Get Database Called NSMutableArray retval NSMutableArray alloc init autorelease NSString query @ SELECT Description UniqueID HexCoords NoHexCoords.. error if success NSAssert1 0 @ Failed to create writable database file with message ' @'. error localizedDescription Call This Function in ApplicationDidFinishLaunching. Now remove the data base that is in ur bundle currently. MAKE SURE U HAD..
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