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2014/10/15 ¤U¤Č 10:09:34
iphone Programming Glossary: getsHow 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 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.. be an instance using viewWillDisappear where you receive a memory warning and the observer never gets unregistered so you should account for that as well. Note The domain you use doesn't matter. It's just..
Do I need to disable NSLog before release Application? http://stackoverflow.com/questions/2025471/do-i-need-to-disable-nslog-before-release-application to release a beta or final release all those DLog lines automatically become empty and nothing gets emitted. This way there's no manual setting of variables or commenting of NSLogs required. Picking your..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework real floats and then reverse to get back to where we started. ip stands for in place which means A gets overwritten That's the reason for all this special packing malarkey so that we can squash the return.. 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.. 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..
How to set Local Notification repeat interval to custom time interval? http://stackoverflow.com/questions/4363847/how-to-set-local-notification-repeat-interval-to-custom-time-interval localnotification share improve this question Got the answer It is as straight as it gets. You cannot create custom repeat intervals. You have to use on NSCalendarUnit's in built Unit Time Intervals..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer CGFloat radius 0.5f CGRectGetHeight bounds Create the visible path which will be the shape that gets the inner shadow In this case it's just a rounded rect but could be as complex as your want CGMutablePathRef.. be any offset 0 CGPathAddRect path NULL CGRectInset bounds 42 42 Add the visible path so that it gets subtracted for the shadow CGPathAddPath path NULL visiblePath CGPathCloseSubpath path Add the visible.. context CGSizeMake 0.0f 1.0f 3.0f aColor CGColor Now fill the rectangle so the shadow gets drawn aColor setFill CGContextSaveGState context CGContextAddPath context path CGContextEOFillPath context..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive single target say an app and a library. All of them end up in the build products folder and Xcode gets naĆÆvely confused about how to package them both into an .ipa file so it merely disables the option... the option. A way to solve this is as follows go through build settings for each of the targets except the application target and set Skip Install flag to YES. Then do the Product Archive tango once..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell scrolling completely stops and clearing out the cache on memory warning. But the app invariably gets a memory warning due to size of images being cached and clears the cache before reloading. If scrolling..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload the problem when i take a picture with the iphone while holding it landscape the image gets uploaded to the server and it viewed like you would expect. when taking a picture holding the phone..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c thread's NSAutoreleasePool is alerted of the call. The NSAutoreleasePool now knows that once it gets an opportunity after the current iteration of the event loop it can call release on the object. From..
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 method you're calling. The result could be anything void int char NSString id etc. ARC normally gets this information from the header of the object type you're working with. 2 There are really only 4 things..
http://stackoverflow.com/questions/706344/lock-unlock-events-iphone ios api locking share improve this question Round about answer Application will resign active gets called in all sorts of scenarios... and from all my testing even if your application stays awake while..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample files out of iCloud and back into a local directory. So this appears to mean that a file directory gets deleted form the local sandbox and moved into the cloud. http developer.apple.com library ios #documentation..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud understanding is that it's a simple NSMutableDictionary of UIImages referenced by filename. It gets bigger and when memory runs out it gets a lot smaller. For example does anyone know for sure that the.. NSMutableDictionary of UIImages referenced by filename. It gets bigger and when memory runs out it gets a lot smaller. For example does anyone know for sure that the image cache behind imageNamed does not..
http://stackoverflow.com/questions/982476/iphone-app-without-appstore access to the application. You can distribute an unlimited number of applications like this. Apple gets a 30 cut. Of course Apple must approve your applicaion. Ad hoc You can distribute applications using..
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 reachabilityWithHostName @ www.apple.com 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.. defaultCenter removeObserver self Note There might be an instance using viewWillDisappear where you receive a memory warning and the observer never gets unregistered so you should account for that as well. Note The domain you use doesn't matter. It's just testing for a gateway to any domain. Important Note The Reachability..
Do I need to disable NSLog before release Application? http://stackoverflow.com/questions/2025471/do-i-need-to-disable-nslog-before-release-application and debugging you'll get debug messages. When you're ready to release a beta or final release all those DLog lines automatically become empty and nothing gets emitted. This way there's no manual setting of variables or commenting of NSLogs required. Picking your build target takes care of it. share improve this answer..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework vDSP_fft_zrip setupReal A stride log2n FFT_INVERSE FFT on n real floats and then reverse to get back to where we started. ip stands for in place which means A gets overwritten That's the reason for all this special packing malarkey so that we can squash the return value into the same space as the send value. To give some perspective.. we be using 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.. 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 of 1024 samples is..
How to set Local Notification repeat interval to custom time interval? http://stackoverflow.com/questions/4363847/how-to-set-local-notification-repeat-interval-to-custom-time-interval hours. How do I do that iphone cocoa touch ios4 uilocalnotification localnotification share improve this question Got the answer It is as straight as it gets. You cannot create custom repeat intervals. You have to use on NSCalendarUnit's in built Unit Time Intervals . I tried all the above solutions and even tried other..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer self bounds CGContextRef context UIGraphicsGetCurrentContext CGFloat radius 0.5f CGRectGetHeight bounds Create the visible path which will be the shape that gets the inner shadow In this case it's just a rounded rect but could be as complex as your want CGMutablePathRef visiblePath CGPathCreateMutable CGRect innerRect CGRectInset.. instead of bounds in the following line 42 cuould just be any offset 0 CGPathAddRect path NULL CGRectInset bounds 42 42 Add the visible path so that it gets subtracted for the shadow CGPathAddPath path NULL visiblePath CGPathCloseSubpath path Add the visible paths as the clipping path to the context CGContextAddPath.. 0.0f alpha 0.5f CGContextSaveGState context CGContextSetShadowWithColor context CGSizeMake 0.0f 1.0f 3.0f aColor CGColor Now fill the rectangle so the shadow gets drawn aColor setFill CGContextSaveGState context CGContextAddPath context path CGContextEOFillPath context Release the paths CGPathRelease path CGPathRelease visiblePath..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive disabled. This happens when your build produces more than a single target say an app and a library. All of them end up in the build products folder and Xcode gets naĆÆvely confused about how to package them both into an .ipa file so it merely disables the option. A way to solve this is as follows go through build settings.. how to package them both into an .ipa file so it merely disables the option. A way to solve this is as follows go through build settings for each of the targets except the application target and set Skip Install flag to YES. Then do the Product Archive tango once again and go to the Organizer to select your new archive...
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell when the user scrolls fast. I am getting images only when scrolling completely stops and clearing out the cache on memory warning. But the app invariably gets a memory warning due to size of images being cached and clears the cache before reloading. If scrolling is very fast it crashes. Any other suggestions are welcome..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload andContentType @ image jpg forKey @ imageFile request startAsynchronous the problem when i take a picture with the iphone while holding it landscape the image gets uploaded to the server and it viewed like you would expect. when taking a picture holding the phone in portrait the image is uploaded and viewed as it had been..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c a plumbing perspective when autorelease is called the current thread's NSAutoreleasePool is alerted of the call. The NSAutoreleasePool now knows that once it gets an opportunity after the current iteration of the event loop it can call release on the object. From our perspective as programmers it takes care of calling release..
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 the runtime needs to know what to do with the result of the method you're calling. The result could be anything void int char NSString id etc. ARC normally gets this information from the header of the object type you're working with. 2 There are really only 4 things that ARC would consider for the return value 3 Ignore..
http://stackoverflow.com/questions/706344/lock-unlock-events-iphone which might need a password to unlock or not . iphone ios api locking share improve this question Round about answer Application will resign active gets called in all sorts of scenarios... and from all my testing even if your application stays awake while backgrounded there are no ways to determine that the screen..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample it moves to iCloud. You can also use this method to move files out of iCloud and back into a local directory. So this appears to mean that a file directory gets deleted form the local sandbox and moved into the cloud. http developer.apple.com library ios #documentation iPhone Conceptual iPhoneOSProgrammingGuide iCloud iCloud.html..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud I need to go the extra mile and do it myself. My current basic understanding is that it's a simple NSMutableDictionary of UIImages referenced by filename. It gets bigger and when memory runs out it gets a lot smaller. For example does anyone know for sure that the image cache behind imageNamed does not respond to didReceiveMemoryWarning.. My current basic understanding is that it's a simple NSMutableDictionary of UIImages referenced by filename. It gets bigger and when memory runs out it gets a lot smaller. For example does anyone know for sure that the image cache behind imageNamed does not respond to didReceiveMemoryWarning It seems unlikely that Apple..
http://stackoverflow.com/questions/982476/iphone-app-without-appstore App store With this method anyone with an iPhone can have access to the application. You can distribute an unlimited number of applications like this. Apple gets a 30 cut. Of course Apple must approve your applicaion. Ad hoc You can distribute applications using ad hoc without going through the app store but you are limited..
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 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.. self Note There might be an instance using viewWillDisappear where you receive a memory warning and the observer never gets unregistered so you should account for that as well. Note The domain you use doesn't matter. It's just testing for a gateway..
Do I need to disable NSLog before release Application? http://stackoverflow.com/questions/2025471/do-i-need-to-disable-nslog-before-release-application When you're ready to release a beta or final release all those DLog lines automatically become empty and nothing gets emitted. This way there's no manual setting of variables or commenting of NSLogs required. Picking your build target takes..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework FFT on n real floats and then reverse to get back to where we started. ip stands for in place which means A gets overwritten That's the reason for all this special packing malarkey so that we can squash the return value into the same.. 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.. 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..
How to set Local Notification repeat interval to custom time interval? http://stackoverflow.com/questions/4363847/how-to-set-local-notification-repeat-interval-to-custom-time-interval ios4 uilocalnotification localnotification share improve this question Got the answer It is as straight as it gets. You cannot create custom repeat intervals. You have to use on NSCalendarUnit's in built Unit Time Intervals . I tried all..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer CGFloat radius 0.5f CGRectGetHeight bounds Create the visible path which will be the shape that gets the inner shadow In this case it's just a rounded rect but could be as complex as your want CGMutablePathRef visiblePath.. line 42 cuould just be any offset 0 CGPathAddRect path NULL CGRectInset bounds 42 42 Add the visible path so that it gets subtracted for the shadow CGPathAddPath path NULL visiblePath CGPathCloseSubpath path Add the visible paths as the clipping.. CGContextSetShadowWithColor context CGSizeMake 0.0f 1.0f 3.0f aColor CGColor Now fill the rectangle so the shadow gets drawn aColor setFill CGContextSaveGState context CGContextAddPath context path CGContextEOFillPath context Release the paths..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive produces more than a single target say an app and a library. All of them end up in the build products folder and Xcode gets naĆÆvely confused about how to package them both into an .ipa file so it merely disables the option. A way to solve this.. file so it merely disables the option. A way to solve this is as follows go through build settings for each of the targets except the application target and set Skip Install flag to YES. Then do the Product Archive tango once again and go to the..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell images only when scrolling completely stops and clearing out the cache on memory warning. But the app invariably gets a memory warning due to size of images being cached and clears the cache before reloading. If scrolling is very fast it..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload request startAsynchronous the problem when i take a picture with the iphone while holding it landscape the image gets uploaded to the server and it viewed like you would expect. when taking a picture holding the phone in portrait the image..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c is called the current thread's NSAutoreleasePool is alerted of the call. The NSAutoreleasePool now knows that once it gets an opportunity after the current iteration of the event loop it can call release on the object. From our perspective as..
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 with the result of the method you're calling. The result could be anything void int char NSString id etc. ARC normally gets this information from the header of the object type you're working with. 2 There are really only 4 things that ARC would..
http://stackoverflow.com/questions/706344/lock-unlock-events-iphone or not . iphone ios api locking share improve this question Round about answer Application will resign active gets called in all sorts of scenarios... and from all my testing even if your application stays awake while backgrounded there..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample this method to move files out of iCloud and back into a local directory. So this appears to mean that a file directory gets deleted form the local sandbox and moved into the cloud. http developer.apple.com library ios #documentation iPhone Conceptual..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud My current basic understanding is that it's a simple NSMutableDictionary of UIImages referenced by filename. It gets bigger and when memory runs out it gets a lot smaller. For example does anyone know for sure that the image cache behind.. that it's a simple NSMutableDictionary of UIImages referenced by filename. It gets bigger and when memory runs out it gets a lot smaller. For example does anyone know for sure that the image cache behind imageNamed does not respond to didReceiveMemoryWarning..
http://stackoverflow.com/questions/982476/iphone-app-without-appstore an iPhone can have access to the application. You can distribute an unlimited number of applications like this. Apple gets a 30 cut. Of course Apple must approve your applicaion. Ad hoc You can distribute applications using ad hoc without going..
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 filePath nil delegate release delegate nil doneSelector NULL errorSelector NULL super dealloc Uploader filePath Gets the path of the file this object is uploading. Results Path to the upload file. Side effects None NSString filePath..
GSRegisterPurpleNamedPort SIGABRT in UIApplicationMain Before App Delegate Gets to Run Any Code http://stackoverflow.com/questions/3589631/gsregisterpurplenamedport-sigabrt-in-uiapplicationmain-before-app-delegate-gets SIGABRT in UIApplicationMain Before App Delegate Gets to Run Any Code We recently put an update out for one of our apps and many users told us that they could no longer run..
How to find a pixel-positon of a cursor in UITextView? http://stackoverflow.com/questions/3920944/how-to-find-a-pixel-positon-of-a-cursor-in-uitextview the part before the cursor position NSString head textView.text substringToIndex textView.selectedRange.location Gets the size of this part CGSize initialSize head sizeWithFont textView.font constrainedToSize CGSizeMake sizeOfContentWidth.. CGSize initialSize head sizeWithFont textView.font constrainedToSize CGSizeMake sizeOfContentWidth sizeOfContentHeight Gets the length of the head NSUInteger startOfLine head length The first line BOOL isFirstLine NO if initialSize.height sizeOfContentLine.. startOfLine causes a reduction in height compared to initialSize. NSString tempHead head substringToIndex startOfLine Gets the size of this temp head CGSize tempHeadSize tempHead sizeWithFont textView.font constrainedToSize CGSizeMake sizeOfContentWidth..
uploading photo through programing in objective-c [duplicate] http://stackoverflow.com/questions/5801049/uploading-photo-through-programing-in-objective-c filePath nil delegate release delegate nil doneSelector NULL errorSelector NULL super dealloc Uploader filePath Gets the path of the file this object is uploading. Results Path to the upload file. Side effects None NSString filePath..
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