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2014/10/15 ¤U¤È 10:13:25
iphone Programming Glossary: returningiOS 6: How do I restrict some views to portrait and allow others to rotate? http://stackoverflow.com/questions/12630359/ios-6-how-do-i-restrict-some-views-to-portrait-and-allow-others-to-rotate to portrait orientation and only the last view should be allowed to rotate to landscape. When returning from the fourth view to the third and the fourth view was in landscape orientation I want everything.. including the return to portrait even if the device was being held in landscape orientation when returning from view controller #4 to #3. In iOS 6 all view controllers rotate to landscape breaking those that..
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 get single line text. There is plenty of height in the UILabel for the text to display I'm just returning a large value for the height in heightForRowAtIndexPath . iphone objective c cocoa touch share improve..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale share improve this question What exactly takes place when you use this function Is the function returning an invalid image or is the display not showing it correctly This is the method I use to convert to greyscale...
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone NSString on the iPhone Can anybody point me in the right direction to be able to encrypt a string returning another string with the encrypted data I've been trying with AES256 encryption. I want to write a method..
http://stackoverflow.com/questions/2496554/easiest-way-to-support-multiple-orientations-how-do-i-load-a-custom-nib-when-th and load another if needed. You check orientation in shouldAutorotateToInterfaceOrientation returning yes if you want to rotate. I use a navigation controller to manage the transition. If I have the portrait..
Does UIGestureRecognizer work on a UIWebView? http://stackoverflow.com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview what I have seen UIWebView does not play well with others. For gesture recognizers you could try returning YES from BOOL gestureRecognizer UIGestureRecognizer gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer..
NSDateFormatter returning nil in OS 4.0 http://stackoverflow.com/questions/3094819/nsdateformatter-returning-nil-in-os-4-0 returning nil in OS 4.0 I had the following code working on on OS 3.x NSString stringDate @ 2010 06 21T20 06..
http://stackoverflow.com/questions/4445173/when-to-use-nsinteger-vs-int sample code they use NSInteger or NSUInteger when passing a value as an argument to a function or returning a value from a function. NSInteger someFunc ... void someFuncWithInt NSInteger value ... But w in a..
How to programmatically determine iPhone interface orientation? http://stackoverflow.com/questions/634745/how-to-programmatically-determine-iphone-interface-orientation mode. Is there a way to find the current orientation of the GUI in cases where the device is returning ambiguous information I suppose I could track orientation change events to remember the last portrait..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c hit zero and bad memory will be returned to the caller. The answer is to call autorelease before returning the string. By explicitly calling autorelease we pass the responsibility for releasing the string on..
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 perspective it is an object after all. That means that if the method you're calling someMethod is returning a non object including void you could end up with a garbage pointer value being retained released and..
http://stackoverflow.com/questions/8086584/objective-c-url-encoding will not produce the correct encoding in this case it will not encode anything returning the same string. Note consider if this set of characters meet your needs if not change them as needed...
iOS 6: How do I restrict some views to portrait and allow others to rotate? http://stackoverflow.com/questions/12630359/ios-6-how-do-i-restrict-some-views-to-portrait-and-allow-others-to-rotate up to four levels deep. I want the first three views restricted to portrait orientation and only the last view should be allowed to rotate to landscape. When returning from the fourth view to the third and the fourth view was in landscape orientation I want everything to rotate back to portrait. In iOS 5 I simply defined shouldAutorotateToInterfaceOrientation.. allowable orientations. Everything worked as described above including the return to portrait even if the device was being held in landscape orientation when returning from view controller #4 to #3. In iOS 6 all view controllers rotate to landscape breaking those that weren't meant to. The iOS 6 release notes say More responsibility..
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 numberOfLines on that and lineBreakMode doesn't work I still get single line text. There is plenty of height in the UILabel for the text to display I'm just returning a large value for the height in heightForRowAtIndexPath . iphone objective c cocoa touch share improve this question Here is a simpler way and it works for..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale may be the problem Thanks. iphone cocoa touch cgimage share improve this question What exactly takes place when you use this function Is the function returning an invalid image or is the display not showing it correctly This is the method I use to convert to greyscale. UIImage convertToGreyscale UIImage i int kRed 1 int..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone Encryption for an NSString on the iPhone Can anybody point me in the right direction to be able to encrypt a string returning another string with the encrypted data I've been trying with AES256 encryption. I want to write a method which takes two NSString instances one being the message..
http://stackoverflow.com/questions/2496554/easiest-way-to-support-multiple-orientations-how-do-i-load-a-custom-nib-when-th this question You have to load one view then check orientation and load another if needed. You check orientation in shouldAutorotateToInterfaceOrientation returning yes if you want to rotate. I use a navigation controller to manage the transition. If I have the portrait view up and the device rotates I push the landscape view..
Does UIGestureRecognizer work on a UIWebView? http://stackoverflow.com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview ipad uigesturerecognizer share improve this question From what I have seen UIWebView does not play well with others. For gesture recognizers you could try returning YES from BOOL gestureRecognizer UIGestureRecognizer gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer UIGestureRecognizer otherGestureRecognizer..
NSDateFormatter returning nil in OS 4.0 http://stackoverflow.com/questions/3094819/nsdateformatter-returning-nil-in-os-4-0 returning nil in OS 4.0 I had the following code working on on OS 3.x NSString stringDate @ 2010 06 21T20 06 36 00 00 NSDateFormatter dateFormatter NSDateFormatter alloc..
http://stackoverflow.com/questions/4445173/when-to-use-nsinteger-vs-int NSInteger vs int when developing for iOS I see in the apple sample code they use NSInteger or NSUInteger when passing a value as an argument to a function or returning a value from a function. NSInteger someFunc ... void someFuncWithInt NSInteger value ... But w in a function they're just using int to track a value for int i i..
How to programmatically determine iPhone interface orientation? http://stackoverflow.com/questions/634745/how-to-programmatically-determine-iphone-interface-orientation flat displaying an interface oriented in portrait or landscape mode. Is there a way to find the current orientation of the GUI in cases where the device is returning ambiguous information I suppose I could track orientation change events to remember the last portrait landscape orientation or check the main UIView's bounds height..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c it. If we call release however the reference count will hit zero and bad memory will be returned to the caller. The answer is to call autorelease before returning the string. By explicitly calling autorelease we pass the responsibility for releasing the string on to the thread's NSAutoreleasePool which will happen at some..
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 even though you don't want to use it. From the compiler's perspective it is an object after all. That means that if the method you're calling someMethod is returning a non object including void you could end up with a garbage pointer value being retained released and crash. Additional Arguments One consideration is that this..
http://stackoverflow.com/questions/8086584/objective-c-url-encoding ' @ # kCFStringEncodingUTF8 Note stringByAddingPercentEscapesUsingEncoding will not produce the correct encoding in this case it will not encode anything returning the same string. Note consider if this set of characters meet your needs if not change them as needed. RFC 3986 characters requiring encoding added since it is..
iOS 6: How do I restrict some views to portrait and allow others to rotate? http://stackoverflow.com/questions/12630359/ios-6-how-do-i-restrict-some-views-to-portrait-and-allow-others-to-rotate three views restricted to portrait orientation and only the last view should be allowed to rotate to landscape. When returning from the fourth view to the third and the fourth view was in landscape orientation I want everything to rotate back to portrait... as described above including the return to portrait even if the device was being held in landscape orientation when returning from view controller #4 to #3. In iOS 6 all view controllers rotate to landscape breaking those that weren't meant to. The..
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 doesn't work I still get single line text. There is plenty of height in the UILabel for the text to display I'm just returning a large value for the height in heightForRowAtIndexPath . iphone objective c cocoa touch share improve this question..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale touch cgimage share improve this question What exactly takes place when you use this function Is the function returning an invalid image or is the display not showing it correctly This is the method I use to convert to greyscale. UIImage convertToGreyscale..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone Encryption for an NSString on the iPhone Can anybody point me in the right direction to be able to encrypt a string returning another string with the encrypted data I've been trying with AES256 encryption. I want to write a method which takes two..
http://stackoverflow.com/questions/2496554/easiest-way-to-support-multiple-orientations-how-do-i-load-a-custom-nib-when-th then check orientation and load another if needed. You check orientation in shouldAutorotateToInterfaceOrientation returning yes if you want to rotate. I use a navigation controller to manage the transition. If I have the portrait view up and the..
Does UIGestureRecognizer work on a UIWebView? http://stackoverflow.com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview this question From what I have seen UIWebView does not play well with others. For gesture recognizers you could try returning YES from BOOL gestureRecognizer UIGestureRecognizer gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer..
NSDateFormatter returning nil in OS 4.0 http://stackoverflow.com/questions/3094819/nsdateformatter-returning-nil-in-os-4-0 returning nil in OS 4.0 I had the following code working on on OS 3.x NSString stringDate @ 2010 06 21T20 06 36 00 00 NSDateFormatter..
http://stackoverflow.com/questions/3319805/detecting-call-state-in-ios4
Behaviour for significant change location API when terminated/suspended? http://stackoverflow.com/questions/3421242/behaviour-for-significant-change-location-api-when-terminated-suspended the background it should do minimal work and avoid any tasks such as querying the network that might prevent it from returning before the allocated time expires. If it does not your application may be terminated. This suggests you are woken up with..
http://stackoverflow.com/questions/4445173/when-to-use-nsinteger-vs-int I see in the apple sample code they use NSInteger or NSUInteger when passing a value as an argument to a function or returning a value from a function. NSInteger someFunc ... void someFuncWithInt NSInteger value ... But w in a function they're just..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion z values of the acceleration vector to the position vector. This apart from having not much sense has the result of returning the object to the original position after an acceleration. Since the acceleration goes from positive to negative or vice..
NSDate is not returning my local Time zone /default time zone of device http://stackoverflow.com/questions/4547379/nsdate-is-not-returning-my-local-time-zone-default-time-zone-of-device is not returning my local Time zone default time zone of device My local and default time zone is GMT 5 but when I get date and time by..
Drawing waveform with AVAssetReader http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader retain NSThread MCSM_performBlockOnMainThread ^ UIImage result UIImage imageWithData waveFormData NSLog @ returning rendered pictogram on main thread d bytes @ data in UIImage 0.0f x 0.0f pixels waveFormData.length imgExt uppercaseString.. retain NSThread MCSM_performBlockOnMainThread ^ UIImage result UIImage imageWithData waveFormData NSLog @ returning rendered pictogram on main thread d bytes @ data in UIImage 0.0f x 0.0f pixels waveFormData.length imgExt uppercaseString..
How to programmatically determine iPhone interface orientation? http://stackoverflow.com/questions/634745/how-to-programmatically-determine-iphone-interface-orientation in portrait or landscape mode. Is there a way to find the current orientation of the GUI in cases where the device is returning ambiguous information I suppose I could track orientation change events to remember the last portrait landscape orientation..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c reference count will hit zero and bad memory will be returned to the caller. The answer is to call autorelease before returning the string. By explicitly calling autorelease we pass the responsibility for releasing the string on to the thread's NSAutoreleasePool..
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 From the compiler's perspective it is an object after all. That means that if the method you're calling someMethod is returning a non object including void you could end up with a garbage pointer value being retained released and crash. Additional..
What does the Xcode 4.2 preference “Support Wirelessly Connected Devices” do? http://stackoverflow.com/questions/7266391/what-does-the-xcode-4-2-preference-support-wirelessly-connected-devices-do are estimating in version 4.4 . 2 2012 This feature is still gone as of Xcode 4.6. There is currently no sign of it returning in near future if ever. 10 2013 Xcode 5.0 is here and there is still no sign the feature will return. We can pretty much..
http://stackoverflow.com/questions/8086584/objective-c-url-encoding will not produce the correct encoding in this case it will not encode anything returning the same string. Note consider if this set of characters meet your needs if not change them as needed. RFC 3986 characters..
http://stackoverflow.com/questions/10163664/bradlarsons-gpuimage-example-ios-4-1-building-problems-compile-is-ok-but-not its assertion on PDP context 0. Mon Apr 16 11 10 09 unknown CommCenter 33 Notice No more assertions for PDP context 0. Returning it back to normal. Mon Apr 16 11 10 09 unknown CommCenter 33 Notice Scheduling PDP tear down timer for 356253309.686500..
CLGeocoder Only Returning One Placemark http://stackoverflow.com/questions/11344188/clgeocoder-only-returning-one-placemark Only Returning One Placemark I have a problem with CLGeocoder where when I call geocodeAddressString withCompletionHandler I only ever..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone RGBAPixel Bitmap function returns pre calculated RGBA divide RGB by A to get unmodified RGB RGBAPixel bitmap NSLog @ Returning bitmap representation of UIImage. 8 bits each of red green blue and alpha. self setBytesPerRow self.size.width RGBA self..
Returning multiple values from a method in Objective-C http://stackoverflow.com/questions/1692005/returning-multiple-values-from-a-method-in-objective-c multiple values from a method in Objective C I asked a similar question but I couldn't get it working exactly. I'm building..
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
What's the UITableView index magnifying glass character? http://stackoverflow.com/questions/235120/whats-the-uitableview-index-magnifying-glass-character
Realtime formatting with NSNumberFormatter in a UITextfield http://stackoverflow.com/questions/2412491/realtime-formatting-with-nsnumberformatter-in-a-uitextfield self formatCurrencyValue amount doubleValue textField setText NSString stringWithFormat @ @ newAmount return NO Returning yes allows the entered chars to be processed return YES NSString formatCurrencyValue double value NSNumberFormatter numberFormatter..
UITableView issue when using separate delegate/dataSource http://stackoverflow.com/questions/254354/uitableview-issue-when-using-separate-delegate-datasource the following code to TableTestViewController.m NSInteger numberOfSectionsInTableView UITableView tableView NSLog @ Returning num sections return 1 NSInteger tableView UITableView tableView numberOfRowsInSection NSInteger section NSLog @ Returning.. num sections return 1 NSInteger tableView UITableView tableView numberOfRowsInSection NSInteger section NSLog @ Returning num rows return 1 UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath indexPath NSLog @ Trying.. UITableViewCell alloc initWithFrame CGRectZero reuseIdentifier CellIdentifier autorelease cell.text @ Hello NSLog @ Returning cell return cell Build and Go and you should see the word Hello appear in the UITableView Now to attempt to move this UITableView..
Returning data from data-grabbing class from web? http://stackoverflow.com/questions/3883747/returning-data-from-data-grabbing-class-from-web data from data grabbing class from web I'm trying to create a class which will let me get requested data from a web service...
Returning nil in the init in Objective C code http://stackoverflow.com/questions/4336953/returning-nil-in-the-init-in-objective-c-code nil in the init in Objective C code In the case if we return nil in the init method what's happening with retain count..
Drawing waveform with AVAssetReader http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader self class cachedAudioPictogramPathForMPMediaItem item if fman fileExistsAtPath assetPictogramFilepath NSLog @ Returning cached waveform pictogram @ assetPictogramFilepath lastPathComponent self self initWithContentsOfFile assetPictogramFilepath..
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