2014/10/15 下午 10:15:45
iphone Programming Glossary: veryHow to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices Now if I want to create an application that runs on both iPhone 4 and 5 of course I have to build every window twice but I also have to detect whether the user has an iPhone with 3.5 or 4 screen and then.. auto resizing capabilities of iOS so your views can adjust and adapt any screen size. That's not very hard read some documentation about that. It will save you a lot of time. iOS 6 also offers new features..
How can I get a writable path on the iPhone? http://stackoverflow.com/questions/1567134/how-can-i-get-a-writable-path-on-the-iphone NSUserDomainMask YES NSString documentsDirectory paths objectAtIndex 0 Secondly and very similar to the Documents directory there is the Library folder where you store configuration files and.. have to actually create the Caches directory there so when writing you have to check and create every time Kind of a pain but that's how it is. Then when you have a writable path you just append a file..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview I can't set the tag in the creation of the cell since the cell might be dequeued instead. It feels very dirty. There must be a better way. iphone uitableview uitableviewcell share improve this question..
This class is not key value coding-compliant for the key http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key coding compliant for the key I'm trying to link a UILabel with an IBOutlet created in my class. Every time I build my application it crashes on the label screen with the error this class is not key value.. File's Owner. the class of the File's Owner is SecondView . So what is wrong here One more thing every time I create a new application and try to link a UISomething to an IBOutlet I get the same error. Is..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework with that. NOTE Program outputs to console results come out as 0.000 that's not an error it's just very very fast This code is really stupidly obscure it is generously commented but the comments don't actually.. that. NOTE Program outputs to console results come out as 0.000 that's not an error it's just very very fast This code is really stupidly obscure it is generously commented but the comments don't actually.. pitch detection on microphone input and we have set it up so that some callback gets triggered every time the microphone gets in 1024 floats. Supposing the microphone sampling rate was 44.1kHz so that's..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview a couple of CALayers based on an example by Bill Dudney. The newest version of the program at the very bottom of the page implements this kind of perspective operation. The code should be reasonably simple..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 the Project section to the Public section OPTIONAL ...and they will AUTOMATICALLY be exported every time you build the app into a sub directory of the debug universal directory they will be in usr local.. Apple's code If you can't find the output file here's a workaround Add the following code to the very end of the script courtesy of Frederik Wallner open CREATING_UNIVERSAL_DIR Apple deletes all output.. Apple should auto select it but they didn't think of that in the main window scroll to bottom. The very last line should read lipo for current configuration Debug creating output file Users blah Library Developer..
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 and hints There has been many Questions recently about drawing PDF's. Yes you can render PDF's very easily with a UIWebView but this cant give the performance and functionality that you would expect from.. vfr reader zooming paging UIScrollView CATiledView brow leaves paging with nice transitions skim everything it seems PDF reader editor for OSX iphone ios ipad pdf calayer share improve this question ..
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 and scrapped the custom backgrounds before I had a chance to fix it. Still this will probably be very helpful for you CustomCellBackgroundView.h Created by Mike Akers on 11 21 08. Copyright 2008 __MyCompanyName__...
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content in the notes string. iphone cocoa touch uikit share improve this question There is actually a very easy way to do resizing of the UITextView to its correct height of the content. It can be done using..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c tool support. Speed Optimizations Instead of checking whether a delegate responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way.. every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c and free concept but Cocoa's references counting scheme has me rather confused. I'm told it's very elegant once you understand it but I'm just not over the hump yet. How do release retain and autorelease.. about other parts of the system crashing because you've freed memory they were using. Assuming everyone is playing along and retaining releasing according to the rules when one piece of code retains and.. to call retain explicitly and then explicitly release it when you're done. Consider the following very contrived bit of code and you'll see a situation where autorelease is required NSString createHelloWorldString..
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 share improve this question Solution The compiler is warning about this for a reason. It's very rare that this warning should simply be ignored and it's easy to work around. Here's how SEL selector.. 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.. all headers. You could end up with crashes in code that the compiler thinks is fine. This is very rare but could happen. Usually you'll just get a warning that it doesn't know which of two method signatures..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Data Usage Tracking Monitoring I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices '4 Retina' size to your view controller in the storyboard. Now if I want to create an application that runs on both iPhone 4 and 5 of course I have to build every window twice but I also have to detect whether the user has an iPhone with 3.5 or 4 screen and then apply the view. How should I do that iphone ios objective c.. nor use different views for different screen sizes. Use the auto resizing capabilities of iOS so your views can adjust and adapt any screen size. That's not very hard read some documentation about that. It will save you a lot of time. iOS 6 also offers new features about this but this is still under NDA at the moment. Be..
How can I get a writable path on the iPhone? http://stackoverflow.com/questions/1567134/how-can-i-get-a-writable-path-on-the-iphone 3.2 NSArray paths NSSearchPathForDirectoriesInDomains NSDocumentDirectory NSUserDomainMask YES NSString documentsDirectory paths objectAtIndex 0 Secondly and very similar to the Documents directory there is the Library folder where you store configuration files and writable databases that you also want to keep around but.. NO attributes nil error error Note that you have to actually create the Caches directory there so when writing you have to check and create every time Kind of a pain but that's how it is. Then when you have a writable path you just append a file name onto it like so NSString filePath documentsDirectory stringByAppendingPathComponent..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview sender int row button.tag What's important to note is that I can't set the tag in the creation of the cell since the cell might be dequeued instead. It feels very dirty. There must be a better way. iphone uitableview uitableviewcell share improve this question In Apple's Accessory sample the following method is used..
This class is not key value coding-compliant for the key http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key class is not key value coding compliant for the key I'm trying to link a UILabel with an IBOutlet created in my class. Every time I build my application it crashes on the label screen with the error this class is not key value coding compliant for the key XXXX . Here is the code in SecondView.h.. string In my SecondView.xib the UILabel is linked with the File's Owner. the class of the File's Owner is SecondView . So what is wrong here One more thing every time I create a new application and try to link a UISomething to an IBOutlet I get the same error. Is there a global parameter that can generate the error I've..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework to load a xib but I'm 90 sure you don't need to bother with that. NOTE Program outputs to console results come out as 0.000 that's not an error it's just very very fast This code is really stupidly obscure it is generously commented but the comments don't actually make life any easier. Basically at the heart of it is.. to load a xib but I'm 90 sure you don't need to bother with that. NOTE Program outputs to console results come out as 0.000 that's not an error it's just very very fast This code is really stupidly obscure it is generously commented but the comments don't actually make life any easier. Basically at the heart of it is vDSP_fft_zrip.. this function in the first place Let's say we want to perform pitch detection on microphone input and we have set it up so that some callback gets triggered every time the microphone gets in 1024 floats. Supposing the microphone sampling rate was 44.1kHz so that's ~44 frames sec. So our time window is whatever the time duration..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview where I've implemented touch based rotation and scaling on a couple of CALayers based on an example by Bill Dudney. The newest version of the program at the very bottom of the page implements this kind of perspective operation. The code should be reasonably simple to read. The sublayerTransform you refer to in your response..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 to the Copy Headers phase OPTIONAL ...and drag drop them from the Project section to the Public section OPTIONAL ...and they will AUTOMATICALLY be exported every time you build the app into a sub directory of the debug universal directory they will be in usr local include OPTIONAL NOTE if you also try to drag drop your project.. The workaround dont' embed xcode projects too many bugs in Apple's code If you can't find the output file here's a workaround Add the following code to the very end of the script courtesy of Frederik Wallner open CREATING_UNIVERSAL_DIR Apple deletes all output after 200 lines. Select your Target and in the Run Script Phase.. Select the top item this is your most recent build . Apple should auto select it but they didn't think of that in the main window scroll to bottom. The very last line should read lipo for current configuration Debug creating output file Users blah Library Developer Xcode DerivedData AppName ashwnbutvodmoleijzlncudsekyf..
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 and Lean PDF Viewer for iPhone iPad iOs tips and hints There has been many Questions recently about drawing PDF's. Yes you can render PDF's very easily with a UIWebView but this cant give the performance and functionality that you would expect from a good PDF viewer. You can draw a PDF page to a CALayer.. projects Apple ZoomingPDF zooming UIScrollView CATiledLayer vfr reader zooming paging UIScrollView CATiledView brow leaves paging with nice transitions skim everything it seems PDF reader editor for OSX iphone ios ipad pdf calayer share improve this question I have build such kind of application using approximatively..
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 look a little funny but we moved to a different design and scrapped the custom backgrounds before I had a chance to fix it. Still this will probably be very helpful for you CustomCellBackgroundView.h Created by Mike Akers on 11 21 08. Copyright 2008 __MyCompanyName__. All rights reserved. #import UIKit UIKit.h typedef..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content 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 of the UITextView to its correct height of the content. It can be done using the UITextView contentSize . CGRect frame _textView.frame frame.size.height..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c precise doesn't mess with NSObject and can provide better tool support. Speed Optimizations Instead of checking whether a delegate responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate.. Instead of checking whether a delegate responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional void something id something didFinishLoadingItem id item void..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c with the iPhone SDK. I'm reasonably comfortable with C's malloc and free concept but Cocoa's references counting scheme has me rather confused. I'm told it's very elegant once you understand it but I'm just not over the hump yet. How do release retain and autorelease work and what are the conventions about their use Or failing.. malloc and free is that any given object doesn't need to worry about other parts of the system crashing because you've freed memory they were using. Assuming everyone is playing along and retaining releasing according to the rules when one piece of code retains and then releases the object any other piece of code also referencing.. Hello World If you want to hang onto that string you'd need to call retain explicitly and then explicitly release it when you're done. Consider the following very contrived bit of code and you'll see a situation where autorelease is required NSString createHelloWorldString NSString s NSString alloc initWithString @ Hello..
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 warning anymore iphone objective c ios automatic ref counting share improve this question Solution The compiler is warning about this for a reason. It's very rare that this warning should simply be ignored and it's easy to work around. Here's how SEL selector NSSelectorFromString @ someMethod IMP imp _controller methodForSelector.. IMP you need to cast 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.. wrong info if declare you objects as id and you're not importing all headers. You could end up with crashes in code that the compiler thinks is fine. This is very rare but could happen. Usually you'll just get a warning that it doesn't know which of two method signatures to choose from. 3 See the ARC reference on retained..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Data Usage Tracking Monitoring I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details shared in this post with other posts..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices in the storyboard. Now if I want to create an application that runs on both iPhone 4 and 5 of course I have to build every window twice but I also have to detect whether the user has an iPhone with 3.5 or 4 screen and then apply the view. How.. screen sizes. Use the auto resizing capabilities of iOS so your views can adjust and adapt any screen size. That's not very hard read some documentation about that. It will save you a lot of time. iOS 6 also offers new features about this but this..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview to note is that I can't set the tag in the creation of the cell since the cell might be dequeued instead. It feels very dirty. There must be a better way. iphone uitableview uitableviewcell share improve this question In Apple's Accessory..
This class is not key value coding-compliant for the key http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key is not key value coding compliant for the key I'm trying to link a UILabel with an IBOutlet created in my class. Every time I build my application it crashes on the label screen with the error this class is not key value coding compliant for.. is linked with the File's Owner. the class of the File's Owner is SecondView . So what is wrong here One more thing every time I create a new application and try to link a UISomething to an IBOutlet I get the same error. Is there a global parameter..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework need to bother with that. NOTE Program outputs to console results come out as 0.000 that's not an error it's just very very fast This code is really stupidly obscure it is generously commented but the comments don't actually make life any.. need to bother with that. NOTE Program outputs to console results come out as 0.000 that's not an error it's just very very fast This code is really stupidly obscure it is generously commented but the comments don't actually make life any easier... say we want to perform pitch detection on microphone input and we have set it up so that some callback gets triggered every time the microphone gets in 1024 floats. Supposing the microphone sampling rate was 44.1kHz so that's ~44 frames sec. So..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview and scaling on a couple of CALayers based on an example by Bill Dudney. The newest version of the program at the very bottom of the page implements this kind of perspective operation. The code should be reasonably simple to read. The sublayerTransform..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 drag drop them from the Project section to the Public section OPTIONAL ...and they will AUTOMATICALLY be exported every time you build the app into a sub directory of the debug universal directory they will be in usr local include OPTIONAL.. too many bugs in Apple's code If you can't find the output file here's a workaround Add the following code to the very end of the script courtesy of Frederik Wallner open CREATING_UNIVERSAL_DIR Apple deletes all output after 200 lines. Select.. most recent build . Apple should auto select it but they didn't think of that in the main window scroll to bottom. The very last line should read lipo for current configuration Debug creating output file Users blah Library Developer Xcode DerivedData..
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 iPhone iPad iOs tips and hints There has been many Questions recently about drawing PDF's. Yes you can render PDF's very easily with a UIWebView but this cant give the performance and functionality that you would expect from a good PDF viewer... CATiledLayer vfr reader zooming paging UIScrollView CATiledView brow leaves paging with nice transitions skim everything it seems PDF reader editor for OSX iphone ios ipad pdf calayer share improve this question I have build such kind..
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 to a different design and scrapped the custom backgrounds before I had a chance to fix it. Still this will probably be very helpful for you CustomCellBackgroundView.h Created by Mike Akers on 11 21 08. Copyright 2008 __MyCompanyName__. All rights..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content 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 of the UITextView to its correct height of the content. It can be done using the UITextView contentSize..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c can provide better tool support. Speed Optimizations Instead of checking whether a delegate responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use.. responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional void something id something..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c with C's malloc and free concept but Cocoa's references counting scheme has me rather confused. I'm told it's very elegant once you understand it but I'm just not over the hump yet. How do release retain and autorelease work and what are.. doesn't need to worry about other parts of the system crashing because you've freed memory they were using. Assuming everyone is playing along and retaining releasing according to the rules when one piece of code retains and then releases the.. string you'd need to call retain explicitly and then explicitly release it when you're done. Consider the following very contrived bit of code and you'll see a situation where autorelease is required NSString createHelloWorldString NSString..
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 automatic ref counting share improve this question Solution The compiler is warning about this for a reason. It's very rare that this warning should simply be ignored and it's easy to work around. Here's how SEL selector NSSelectorFromString.. 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.. and you're not importing all headers. You could end up with crashes in code that the compiler thinks is fine. This is very rare but could happen. Usually you'll just get a warning that it doesn't know which of two method signatures to choose from...
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Data Usage Tracking Monitoring I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details..
Record the sound and play it back with changed pitch http://stackoverflow.com/questions/10549317/record-the-sound-and-play-it-back-with-changed-pitch self if recorder recorder.meteringEnabled YES recorder record double val recorder peakPowerForChannel 0 NSLog @ The Very First Value Of The Recorder Is f val levelTimer NSTimer scheduledTimerWithTimeInterval 0.4 target self selector @selector..
http://stackoverflow.com/questions/12670025/image-url-saving Im arranging my images in the UIScrollView by names with integers. Hope someone could suggest what to do. Thankyou Very Much. NOTE To those who have read this please comment on what part of the code you want me to post here or the part on which..
iPhone crashing when presenting modal view controller http://stackoverflow.com/questions/1412021/iphone-crashing-when-presenting-modal-view-controller the error. Is it something to do with launching 2 views modally in the same event loop or something Thanks Mike Edit Very strange... I have modified it slightly so that the loading view is shown after a tiny delay and this works fine So it appears..
UITableView Won't Scroll In Certain Conditions http://stackoverflow.com/questions/1522838/uitableview-wont-scroll-in-certain-conditions if the table view has more items than fit on the screen about anything bigger than 8 in this layout everything works. Very odd problem kinda blowing my mind. Any insight iphone cocoa touch uitableview share improve this question So I figured..
Problem pushing multiple view controllers onto navigation controller stack http://stackoverflow.com/questions/2619147/problem-pushing-multiple-view-controllers-onto-navigation-controller-stack to view two and then back again it goes to view one. Which is to say that view one is shown instead of view three. Very strangely looking at the viewController array of the navigationController after the calls above show the right entries and..
How to learn about iPhone jailbroken programming? [closed] http://stackoverflow.com/questions/2759660/how-to-learn-about-iphone-jailbroken-programming replace the lockscreen tools needed Suggestions appreciated. iphone sdk jailbreak share improve this question Very good question. I've personally spend quite a bit of time on trying to find documentation on the private APIs and even though..
High-resolution timer for iPhone? http://stackoverflow.com/questions/3540234/high-resolution-timer-for-iphone fast a few seconds then when NTP corrects this drift you will see the clock suddenly go backwards a few seconds. Very bad for timing use. mach_time uses a counter that doesn't ever get corrected by NTP thus can't go backwards thus is far..
UITextView with Syntax Highlighting [duplicate] http://stackoverflow.com/questions/3642540/uitextview-with-syntax-highlighting
How do I do base64 encoding on iphone-sdk? http://stackoverflow.com/questions/392464/how-do-i-do-base64-encoding-on-iphone-sdk
http://stackoverflow.com/questions/4194394/client-server-gksessions but 3 this novel P2P technology would not actually be used in very typical networking programming for games. 4 Very confusingly all the documentation talks about the P2P mode. This is confusing because if you are new to networking programming..
What is meant by .delegate=self? http://stackoverflow.com/questions/4211947/what-is-meant-by-delegate-self self So that's what you're doing. Delegates send messages and you have to say where you want the messages to go. Very typically you want them to go to you so in that case you simply say x.delegate self. Don't forget x.delegate self is exactly..
Convert UIWebview contents to a UIImage when the webview is larger than the screen http://stackoverflow.com/questions/4475397/convert-uiwebview-contents-to-a-uiimage-when-the-webview-is-larger-than-the-scre UIWebview contents to a UIImage when the webview is larger than the screen Very similar to this question and also this answer I'm trying to make an UIImage out from a webview. So far I'm using the code..
iPhone Development - Simulate Memory Warning http://stackoverflow.com/questions/491075/iphone-development-simulate-memory-warning
How to create custom easing function with Core Animation? http://stackoverflow.com/questions/5161465/how-to-create-custom-easing-function-with-core-animation clue how to do that or if it's even possible Are there any alternatives EDIT Here is a concrete example in to steps. Very educational I want to animate an object along a line from point a to b but I want it to bounce its movement along the line..
how to convert array of bytes to base64 String in iphone? http://stackoverflow.com/questions/6466083/how-to-convert-array-of-bytes-to-base64-string-in-iphone of arrLicence and the input is 64 37 81 d4 iphone objective c base64 share improve this question See code sample Very self explained ... http www.cocoadev.com index.pl BaseSixtyFour Also check below SO post . Any base64 library on iphone..
Why am I having to manually set my view's frame in viewDidLoad? http://stackoverflow.com/questions/6757018/why-am-i-having-to-manually-set-my-views-frame-in-viewdidload the frame when it autorotates back to the same orientation Does the view frame not get set to the initial orientation Very confused... I should mention that none of the above including my kludgy hack changes anything visually. The reason I have..
iPhone ImageMagick Library - converting from batch file script to Objective-C using MagickWand API http://stackoverflow.com/questions/7480812/iphone-imagemagick-library-converting-from-batch-file-script-to-objective-c-us
Time based GPS location in background (iphone) http://stackoverflow.com/questions/7560154/time-based-gps-location-in-background-iphone It really depends on your usage of the location. If you monitor actively kiss the battery of your user goodbye. Very detailed accuracy even bigger hit to battery. The backgrounding of location is all or nothing as far as accuracy goes. Less..
App rejected: strange iPhone crash log http://stackoverflow.com/questions/7885682/app-rejected-strange-iphone-crash-log it now. If it does do step X If it does not read on. Now you will need to do follow the steps on this blog . Very useful and well documented article . Hopefully it will symbolicate now and then move to step X . If it does not I'm sorry..
Basic keyframe animation (rotation) http://stackoverflow.com/questions/1031177/basic-keyframe-animation-rotation not looking for animation along a Path since that 䏭 for Translation rather than Rotation ... Anyway any help would be VERY much appreciated Thanks in advance. iphone core animation share improve this question Think I 脎e got it. Here 䏭 code..
Large UICollectionViewCell stopped being displayed when scrolling http://stackoverflow.com/questions/14254222/large-uicollectionviewcell-stopped-being-displayed-when-scrolling Has anyone any ideas for a quick hack solution iphone ios uicollectionview share improve this question i have a VERY dirty and internal solution for this problem @interface UICollectionView CGRect _visibleBounds @end @interface MyCollectionView..
Break on EXC_BAD_ACCESS in XCode? http://stackoverflow.com/questions/1622079/break-on-exc-bad-access-in-xcode issue was. It especially helps in background threads when the Debugger sometimes craps out on any useful information. VERY IMPORTANT TO NOTE however is that you need to 100 make sure this is only in your debug code and not your distribution code...
Location permission alert on iphone with phonegap http://stackoverflow.com/questions/1673579/location-permission-alert-on-iphone-with-phonegap location Of course I only want to change the appname part. Because when you use the framework phonegap the string is VERY ugly something like this var mobile Applications 157EB70D 4AA7 826E 690F0CBE0F appname.app www index.html . Someone having..
An iphone uipickerview that rotates horizontally? http://stackoverflow.com/questions/1892195/an-iphone-uipickerview-that-rotates-horizontally iphone uipickerview that rotates horizontally I've only seen it in a VERY few iPhone apps... but it looks like a picker that rotates left right instead of top bottom . They usually put it on 1 line..
How to make Xcode 3.2.3 build a specfic architecture? http://stackoverflow.com/questions/3438606/how-to-make-xcode-3-2-3-build-a-specfic-architecture that they've Changed it because it used to be confusing . This is not helpful. The build settings for the library VERY clearly say Valid architectures i386 There's no confusion here Xcode is building something other than what the target says..
How can I add a badge to a standard UIButton? http://stackoverflow.com/questions/4722669/how-can-i-add-a-badge-to-a-standard-uibutton the simplest way to achieve this Example image iphone cocoa touch ios badge share improve this question Here's a VERY NICE class by Sascha Paulus called CustomBadge that builds and renders custom badges using Core Graphics. They're just UIView..
How to target iPhone 3GS AND iPhone 4 in one media query? http://stackoverflow.com/questions/5031482/how-to-target-iphone-3gs-and-iphone-4-in-one-media-query ... Above is for small desktop and laptop screens. @media screen and max width 700px ... Above is for the iPad and VERY small desktop laptop screens. @media screen and max device width 480px ... Above is for iPhone 3GS and mobile devices in..
Using AVAssetReader to read (stream) from a remote asset http://stackoverflow.com/questions/6242131/using-avassetreader-to-read-stream-from-a-remote-asset as much between local and non local files as it does between the KIND of files or protocols used. There is a VERY clear distinction between using mp4 mov's versus using the HTTP Live streaming protocol via m3u8's but the differences using..
Objective-C: Asynchronously populate UITableView - how to do this? http://stackoverflow.com/questions/7491517/objective-c-asynchronously-populate-uitableview-how-to-do-this @synthesize delegate @synthesize request @synthesize data @synthesize statusCode @end Now this class is VERY reusable. There are other delegate methods for NSURLConnection that you can add depending on your needs. NSURLConnection..
Which weather data web services do you know? http://stackoverflow.com/questions/8446360/which-weather-data-web-services-do-you-know Historical data. Available for AWS customers. Wunderground API 20 to 5750 per month. Historical data available but VERY expensive. XML or JSON. Takes coordinates as input. There are rumors they get some of their data from National Weather Service..
Array nil (even when addObject:) [duplicate] http://stackoverflow.com/questions/8569495/array-nil-even-when-addobject nil even when addObject duplicate Possible Duplicate addObject to array not working array still nil EVERYTHING UPDATED This app is a table view with a tab bar controller. I am logging the count of the array arrayOfFavourites and.. which is 1 but no cells appear and the cellForRowAtIndexPath is never called using an NSLOG why is this happening I AM VERY ANNOYED iphone objective c cocoa touch nsmutablearray share improve this question In your Favourites.m numberOfRowsInSection..
Encryption App approval from Apple http://stackoverflow.com/questions/8736298/encryption-app-approval-from-apple it Of course they do. You could too if you want. The good news If what you need is an ERN this has become a VERY streamlined automated process in the last year or so. You can do it online and be done with it within hours. Follow this..
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