¡@
2014/10/15 ¤U¤È 10:05:30
iphone Programming Glossary: containsWhen should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc by the view they will not actually be deallocated because the UIViewController itself still contains its own outstanding retaining references to those objects as well. Releasing the UIViewController's..
How do I wrap text in a UITableViewCell without a custom cell http://stackoverflow.com/questions/129502/how-do-i-wrap-text-in-a-uitableviewcell-without-a-custom-cell it should be possible to get text to wrap without creating a custom cell since a UITableViewCell contains a UILabel by default. I know I can make it work if I create a custom cell but that's not what I'm trying..
iOS crash reports: atos not working as expected http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected be is the first address showing in the Binary Images section at the very front of the line which contains your executable. Usually the first entry . Since in the past value of the slide was equal to value of..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview UIButton was pressed in a UITableView I have a UITableView with 5 UITableViewCells . Each cell contains a UIButton which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath..
Using SSL in an iPhone App - Export Compliance http://stackoverflow.com/questions/2128927/using-ssl-in-an-iphone-app-export-compliance John wrote his answer. See Apple iTunes export restrictions on apps . The iTunes connect faq also contains a lot of useful information on export compliance. There are also now restrictions that apply to distributing..
Does my application “contain encryption”? http://stackoverflow.com/questions/2135081/does-my-application-contain-encryption iphone encryption app store share improve this question Unfortunately I believe that your app contains encryption in terms of US BIS even if you just use HTTPS if your app is not an exception included in..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav respect size on back nav I have a UIPopoverController hosting a UINavigationController which contains a small hierarchy of view controllers. I followed the docs and for each view controller I set the view's..
Can I make POST or GET requests from an iphone application? http://stackoverflow.com/questions/319463/can-i-make-post-or-get-requests-from-an-iphone-application connectionDidFinishLoading NSURLConnection connection Once this method is invoked responseData contains the complete result This will send a GET. By the time the final method is called responseData will contain..
Managing multiple asynchronous NSURLConnection connections http://stackoverflow.com/questions/332276/managing-multiple-asynchronous-nsurlconnection-connections of branching and ugly code begins to formulate going What kind of data are we getting back If it contains this do that else do other. It would be useful I think to be able to tag these asynchronous requests.. that I can use to track information about the connection and the info dictionary already contains a mutable data object that I can use to store the reply data as it comes in. void connection NSURLConnection..
http://stackoverflow.com/questions/3504173/detect-retina-display 2.0. You CANNOT assume a device is running iOS4 if the scale property exists as the iPad 3.2 also contains this property. On an iPad running iOS3.2 scale will return 1.0 in 1x mode and 2.0 in 2x mode even though..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz code. I'm posting it here so hopefully it'll help someone. It assumes the PDF document actually contains annotations. for int i 0 i pageCount i CGPDFPageRef page CGPDFDocumentGetPage doc i 1 CGPDFDictionaryRef..
Choosing the right IOS XML parser http://stackoverflow.com/questions/4181690/choosing-the-right-ios-xml-parser So There are a million different XML parsers for the iPhone. I have a medium sized XML file that contains alot of duplicate tags at different points in the hierarchy . I was thinking about TBXML but I was concerned..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file CFURLCreateWithFileSystemPath NULL path kCFURLPOSIXPathStyle 0 CFRelease path This dictionary contains extra options mostly for 'signing' the PDF myDictionary CFDictionaryCreateMutable NULL 0 kCFTypeDictionaryKeyCallBacks..
Why NSUserDefaults failed to save NSMutableDictionary in iPhone SDK? http://stackoverflow.com/questions/471830/why-nsuserdefaults-failed-to-save-nsmutabledictionary-in-iphone-sdk NSUserDefaults . The key type in NSMutableDictionary is NSString the value type is NSArray which contains a list of object which implements NSCoding . Per document NSString and NSArray both are conform to NSCoding..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content the size of a UITextView to conform to its content Say for instance I have a UITextView that contains one line of text Hello world I then add another line of text Goodbye world Is there a good way in Cocoa.. at the Notes field for events in the Calendar application note how the cell and the UITextView it contains expands to hold all lines of text in the notes string. iphone cocoa touch uikit share improve this..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c strong reference to that object. For example a view controller is often the delegate of a view it contains. To define your own delegates you'll have to declare their methods somewhere. There are two basic approaches..
Objective C HTML escape/unescape http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape to do this iphone html objective c cocoa touch escaping share improve this question This link contains the solution below. Cocoa CF has the CFXMLCreateStringByUnescapingEntities function but that's not available..
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer i 1 acceleration_x i 2.0f dt dx vx dt and similarly for dy and dz. Here float acceleration_x n contains x acceleration values from start to end of measurement at times 0 dt 2 dt 3 dt ... n 1 dt. To find the..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc to save memory through which the subviews are also released by the view they will not actually be deallocated because the UIViewController itself still contains its own outstanding retaining references to those objects as well. Releasing the UIViewController's additional ownership of these objects ensures they will be deallocated..
How do I wrap text in a UITableViewCell without a custom cell http://stackoverflow.com/questions/129502/how-do-i-wrap-text-in-a-uitableviewcell-without-a-custom-cell am unaware of any differences regarding tables. It feels like it should be possible to get text to wrap without creating a custom cell since a UITableViewCell contains a UILabel by default. I know I can make it work if I create a custom cell but that's not what I'm trying to achieve I want to understand why my current approach..
iOS crash reports: atos not working as expected http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected is the hex value from the crash report. The load address can be is the first address showing in the Binary Images section at the very front of the line which contains your executable. Usually the first entry . Since in the past value of the slide was equal to value of the load address this always worked. But since Apple introduced..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview which UIButton was pressed in a UITableView I have a UITableView with 5 UITableViewCells . Each cell contains a UIButton which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath indexPath NSString identifier @ identifier..
Using SSL in an iPhone App - Export Compliance http://stackoverflow.com/questions/2128927/using-ssl-in-an-iphone-app-export-compliance need an ERN now not a CCATS as was necessary at the time John wrote his answer. See Apple iTunes export restrictions on apps . The iTunes connect faq also contains a lot of useful information on export compliance. There are also now restrictions that apply to distributing apps with encryption on the French app store see the..
Does my application “contain encryption”? http://stackoverflow.com/questions/2135081/does-my-application-contain-encryption sketchy... an authoritative answer would be better. Thanks. iphone encryption app store share improve this question Unfortunately I believe that your app contains encryption in terms of US BIS even if you just use HTTPS if your app is not an exception included in question 2 . Quote from FAQ on iTunes Connect How do I know..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav with embedded navigation controller doesn't respect size on back nav I have a UIPopoverController hosting a UINavigationController which contains a small hierarchy of view controllers. I followed the docs and for each view controller I set the view's popover context size like so self setContentSizeForViewInPopover..
Can I make POST or GET requests from an iphone application? http://stackoverflow.com/questions/319463/can-i-make-post-or-get-requests-from-an-iphone-application connection didFailWithError NSError error Show error void connectionDidFinishLoading NSURLConnection connection Once this method is invoked responseData contains the complete result This will send a GET. By the time the final method is called responseData will contain the entire HTTP response convert to string with NSString..
Managing multiple asynchronous NSURLConnection connections http://stackoverflow.com/questions/332276/managing-multiple-asynchronous-nsurlconnection-connections a delegate assigned to treat them all as one entity a lot of branching and ugly code begins to formulate going What kind of data are we getting back If it contains this do that else do other. It would be useful I think to be able to tag these asynchronous requests kind of like you're able to tag views with IDs. I was curious.. and now I have an info dictionary of data for each connection that I can use to track information about the connection and the info dictionary already contains a mutable data object that I can use to store the reply data as it comes in. void connection NSURLConnection connection didReceiveData NSData data NSMutableDictionary..
http://stackoverflow.com/questions/3504173/detect-retina-display and if the UIScreen mainScreen .scale property is equal to 2.0. You CANNOT assume a device is running iOS4 if the scale property exists as the iPad 3.2 also contains this property. On an iPad running iOS3.2 scale will return 1.0 in 1x mode and 2.0 in 2x mode even though we know that device does not contain a Retina display...
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz story... Update 2 So I finally came up with some working code. I'm posting it here so hopefully it'll help someone. It assumes the PDF document actually contains annotations. for int i 0 i pageCount i CGPDFPageRef page CGPDFDocumentGetPage doc i 1 CGPDFDictionaryRef pageDictionary CGPDFPageGetDictionary page CGPDFArrayRef..
Choosing the right IOS XML parser http://stackoverflow.com/questions/4181690/choosing-the-right-ios-xml-parser the right IOS XML parser So There are a million different XML parsers for the iPhone. I have a medium sized XML file that contains alot of duplicate tags at different points in the hierarchy . I was thinking about TBXML but I was concerned about its lack of XPath support. For instance lets..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file Create a CFURL using the CFString we just defined url CFURLCreateWithFileSystemPath NULL path kCFURLPOSIXPathStyle 0 CFRelease path This dictionary contains extra options mostly for 'signing' the PDF myDictionary CFDictionaryCreateMutable NULL 0 kCFTypeDictionaryKeyCallBacks kCFTypeDictionaryValueCallBacks CFDictionarySetValue..
Why NSUserDefaults failed to save NSMutableDictionary in iPhone SDK? http://stackoverflow.com/questions/471830/why-nsuserdefaults-failed-to-save-nsmutabledictionary-in-iphone-sdk iPhone SDK I'd like to save an NSMutableDictionary object in NSUserDefaults . The key type in NSMutableDictionary is NSString the value type is NSArray which contains a list of object which implements NSCoding . Per document NSString and NSArray both are conform to NSCoding . I am getting this error NSUserDefaults setObject forKey..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content I size a UITextView to its content Is there a good way to adjust the size of a UITextView to conform to its content Say for instance I have a UITextView that contains one line of text Hello world I then add another line of text Goodbye world Is there a good way in Cocoa Touch to get the rect that will hold all of the lines in.. adjust the parent view accordingly As another example look at the Notes field for events in the Calendar application note how the cell and the UITextView it contains expands to hold all lines of text in the notes string. iphone cocoa touch uikit share improve this question There is actually a very easy way to do resizing..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c retain loops since the delegate of an object often holds a strong reference to that object. For example a view controller is often the delegate of a view it contains. To define your own delegates you'll have to declare their methods somewhere. There are two basic approaches discussed in the Apple Docs on protocols 1 An Informal..
Objective C HTML escape/unescape http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape and the like. Is there any methods in Cocoa Touch UIKit to do this iphone html objective c cocoa touch escaping share improve this question This link contains the solution below. Cocoa CF has the CFXMLCreateStringByUnescapingEntities function but that's not available on the iPhone. @interface MREntitiesConverter NSObject..
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer float dx 0.0f float vx 0.0f for int i 1 i n i vx acceleration_x i 1 acceleration_x i 2.0f dt dx vx dt and similarly for dy and dz. Here float acceleration_x n contains x acceleration values from start to end of measurement at times 0 dt 2 dt 3 dt ... n 1 dt. To find the total displacement you just do dl sqrt dx dx dy dy dz dz..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc subviews are also released by the view they will not actually be deallocated because the UIViewController itself still contains its own outstanding retaining references to those objects as well. Releasing the UIViewController's additional ownership..
How do I wrap text in a UITableViewCell without a custom cell http://stackoverflow.com/questions/129502/how-do-i-wrap-text-in-a-uitableviewcell-without-a-custom-cell tables. It feels like it should be possible to get text to wrap without creating a custom cell since a UITableViewCell contains a UILabel by default. I know I can make it work if I create a custom cell but that's not what I'm trying to achieve I want..
iOS crash reports: atos not working as expected http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected The load address can be is the first address showing in the Binary Images section at the very front of the line which contains your executable. Usually the first entry . Since in the past value of the slide was equal to value of the load address this..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview which UIButton was pressed in a UITableView I have a UITableView with 5 UITableViewCells . Each cell contains a UIButton which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath..
Using SSL in an iPhone App - Export Compliance http://stackoverflow.com/questions/2128927/using-ssl-in-an-iphone-app-export-compliance at the time John wrote his answer. See Apple iTunes export restrictions on apps . The iTunes connect faq also contains a lot of useful information on export compliance. There are also now restrictions that apply to distributing apps with encryption..
Does my application “contain encryption”? http://stackoverflow.com/questions/2135081/does-my-application-contain-encryption be better. Thanks. iphone encryption app store share improve this question Unfortunately I believe that your app contains encryption in terms of US BIS even if you just use HTTPS if your app is not an exception included in question 2 . Quote..
Managing multiple asynchronous NSURLConnection connections http://stackoverflow.com/questions/332276/managing-multiple-asynchronous-nsurlconnection-connections as one entity a lot of branching and ugly code begins to formulate going What kind of data are we getting back If it contains this do that else do other. It would be useful I think to be able to tag these asynchronous requests kind of like you're.. of data for each connection that I can use to track information about the connection and the info dictionary already contains a mutable data object that I can use to store the reply data as it comes in. void connection NSURLConnection connection..
http://stackoverflow.com/questions/3504173/detect-retina-display property is equal to 2.0. You CANNOT assume a device is running iOS4 if the scale property exists as the iPad 3.2 also contains this property. On an iPad running iOS3.2 scale will return 1.0 in 1x mode and 2.0 in 2x mode even though we know that device..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz up with some working code. I'm posting it here so hopefully it'll help someone. It assumes the PDF document actually contains annotations. for int i 0 i pageCount i CGPDFPageRef page CGPDFDocumentGetPage doc i 1 CGPDFDictionaryRef pageDictionary..
Choosing the right IOS XML parser http://stackoverflow.com/questions/4181690/choosing-the-right-ios-xml-parser right IOS XML parser So There are a million different XML parsers for the iPhone. I have a medium sized XML file that contains alot of duplicate tags at different points in the hierarchy . I was thinking about TBXML but I was concerned about its lack..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file we just defined url CFURLCreateWithFileSystemPath NULL path kCFURLPOSIXPathStyle 0 CFRelease path This dictionary contains extra options mostly for 'signing' the PDF myDictionary CFDictionaryCreateMutable NULL 0 kCFTypeDictionaryKeyCallBacks..
Why NSUserDefaults failed to save NSMutableDictionary in iPhone SDK? http://stackoverflow.com/questions/471830/why-nsuserdefaults-failed-to-save-nsmutabledictionary-in-iphone-sdk object in NSUserDefaults . The key type in NSMutableDictionary is NSString the value type is NSArray which contains a list of object which implements NSCoding . Per document NSString and NSArray both are conform to NSCoding . I am getting..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content a good way to adjust the size of a UITextView to conform to its content Say for instance I have a UITextView that contains one line of text Hello world I then add another line of text Goodbye world Is there a good way in Cocoa Touch to get the.. another example look at the Notes field for events in the Calendar application note how the cell and the UITextView it contains expands to hold all lines of text in the notes string. iphone cocoa touch uikit share improve this question There is..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c object often holds a strong reference to that object. For example a view controller is often the delegate of a view it contains. To define your own delegates you'll have to declare their methods somewhere. There are two basic approaches discussed in..
Objective C HTML escape/unescape http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape Cocoa Touch UIKit to do this iphone html objective c cocoa touch escaping share improve this question This link contains the solution below. Cocoa CF has the CFXMLCreateStringByUnescapingEntities function but that's not available on the iPhone...
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer i n i vx acceleration_x i 1 acceleration_x i 2.0f dt dx vx dt and similarly for dy and dz. Here float acceleration_x n contains x acceleration values from start to end of measurement at times 0 dt 2 dt 3 dt ... n 1 dt. To find the total displacement..
NSPredicate that is the equivalent of SQL's LIKE http://stackoverflow.com/questions/2740933/nspredicate-that-is-the-equivalent-of-sqls-like
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll your search predicate s are added to this array predicateArray addObject NSPredicate predicateWithFormat @ name CONTAINS cd @ searchString finally add the filter predicate for this view if filterPredicate filterPredicate NSCompoundPredicate..
Using NSPredicate in 2D Arrays http://stackoverflow.com/questions/4559427/using-nspredicate-in-2d-arrays allTerms valueForKeyPath @ @unionOfArrays.self NSPredicate filter NSPredicate predicateWithFormat @ name CONTAINS cd @ @ A NSArray filteredTerms collapsedTerms filteredArrayUsingPredicate filter The magic here is the valueForKeyPath bit... @distinctUnionOfArrays instead Once we have that array of objects we can then filter it normally using a simple name CONTAINS 'blah' predicate. I thought I might be able to get this to work using a SUBQUERY but that's a strange beast and nothing..
NSPredicate endswith multiple files http://stackoverflow.com/questions/5032541/nspredicate-endswith-multiple-files error nil NSArray files dirContents filteredArrayUsingPredicate NSPredicate predicateWithFormat @ self CONTAINS @ NSArray arrayWithObjects @ .mp4 @ .mov @ .m4v @ .pdf @ .doc @ .xls nil iphone objective c nspredicate share improve..
|