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2014/10/15 ¤U¤È 10:13:41
iphone Programming Glossary: secUIPickerView that looks like UIDatePicker but with seconds http://stackoverflow.com/questions/10999575/uipickerview-that-looks-like-uidatepicker-but-with-seconds that looks like UIDatePicker but with seconds I am making a timer app and needed to display hour min and seconds to the user. I tried using UIDatePicker but it shows.. that looks like UIDatePicker but with seconds I am making a timer app and needed to display hour min and seconds to the user. I tried using UIDatePicker but it shows only hours and mins as selections. Not seconds. After doing a bit.. hour min and seconds to the user. I tried using UIDatePicker but it shows only hours and mins as selections. Not seconds. After doing a bit of research online I found that there is no way to get seconds in UIDatePicker and I had to write..
How to implement a box or gaussian blur on iPhone http://stackoverflow.com/questions/1140117/how-to-implement-a-box-or-gaussian-blur-on-iphone a box or gaussian blur on iPhone I want to be able to take an image and blur it relatively quickly say in 0.1 sec . Image size would almost never be larger than 256 x 256 px. Do I have to loop thru every pixel and average them with neighbors..
How do I break down an NSTimeInterval into year, months, days, hours, minutes and seconds on iPhone? http://stackoverflow.com/questions/1237778/how-do-i-break-down-an-nstimeinterval-into-year-months-days-hours-minutes-an do I break down an NSTimeInterval into year months days hours minutes and seconds on iPhone I have a time interval that spans years and I want all the time components from year down to seconds. My.. and seconds on iPhone I have a time interval that spans years and I want all the time components from year down to seconds. My first thought is to integer divide the time interval by seconds in a year subtract that from a running total of.. I want all the time components from year down to seconds. My first thought is to integer divide the time interval by seconds in a year subtract that from a running total of seconds divide that by seconds in a month subtract that from the running..
http://stackoverflow.com/questions/1420131/iphone-text-glow-effect Text Glow Effect In my IPhone application I want the text in UILabel to glow for a second then fade for a sec . Also i want to repeat this cycle for say 3 or 4 times. Is this possible iphone animation graphics.. Text Glow Effect In my IPhone application I want the text in UILabel to glow for a second then fade for a sec . Also i want to repeat this cycle for say 3 or 4 times. Is this possible iphone animation graphics glow graphic effects..
How to Get time difference in iPhone http://stackoverflow.com/questions/1427151/how-to-get-time-difference-in-iphone difference in iPhone I have 2 arrays with time values in it. They are in the following format. mm ss hundreds of a sec. I want to get the difference between the two lastObjects in the arrays. NSDate is not working because the last value is.. between the two lastObjects in the arrays. NSDate is not working because the last value is in hundredsth of a sec. A question. If the second date is larger than the first will it give me a negative number like 01 10 00 iphone objective.. lastObjects in the arrays. NSDate is not working because the last value is in hundredsth of a sec. A question. If the second date is larger than the first will it give me a negative number like 01 10 00 iphone objective c nsdate nstimeinterval..
XCode 5 Crashes on AppStore Validation http://stackoverflow.com/questions/18913964/xcode-5-crashes-on-appstore-validation Time 2013 09 20 11 37 11.767 0200 OS Version Mac OS X 10.8.5 12F37 Report Version 10 Interval Since Last Report 8761 sec Crashes Since Last Report 8 Per App Interval Since Last Report 5941 sec Per App Crashes Since Last Report 8 Anonymous UUID.. Version 10 Interval Since Last Report 8761 sec Crashes Since Last Report 8 Per App Interval Since Last Report 5941 sec Per App Crashes Since Last Report 8 Anonymous UUID B3570A30 11F9 5E70 9890 7B380C40FAE3 Crashed Thread 0 Dispatch queue..
iphone - How do I add videos to iPad simulator? http://stackoverflow.com/questions/2571656/iphone-how-do-i-add-videos-to-ipad-simulator for this question c'mon guys thanks. iphone iphone sdk 3.0 ipad ios simulator share improve this question Took a sec and some deviousness but I figured it out. Put a video file into your application's Documents directory I tried a .MOV but..
Transitioning to landscape rotation within a uinavigationcontroller http://stackoverflow.com/questions/2922919/transitioning-to-landscape-rotation-within-a-uinavigationcontroller navigation interface before presenting it as a modal view. That way what is showing in the navigation interface is the second view on the stack and so there is a Back button. Then in the navigation controller delegate catch the Back button and.. know to be the root level. So void doButton id sender appear to navigate into a landscape view SecondViewController sec SecondViewController alloc init sec.title self.title to give the correct Back button title UINavigationController nav UINavigationController.. doButton id sender appear to navigate into a landscape view SecondViewController sec SecondViewController alloc init sec.title self.title to give the correct Back button title UINavigationController nav UINavigationController alloc initWithRootViewController..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework 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 ie 1 44 s. So we would pack A with 1024 floats from..
UILabel updating stops during scrolling UIScrollView http://stackoverflow.com/questions/5377914/uilabel-updating-stops-during-scrolling-uiscrollview also have a label at the super view level that receives updated values on its text property from a NSTimer every millisecond. The problem is During scrolling the label stops to display the updates. When the scrolling is end updates on the label.. CFAbsoluteTimeGetCurrent float theTime currentTime startTime elapsedTimeLabel.text NSString stringWithFormat @ 1.2f sec. theTime Thanks for any help. iphone objective c ios uiviewcontroller uiscrollview share improve this question I had..
Why is UIBezierPath faster than Core Graphics path? http://stackoverflow.com/questions/6327817/why-is-uibezierpath-faster-than-core-graphics-path by each path in Instruments. Below are typical results call tree inverted you can see that strokeContext takes 9.5 sec. while strokeUIBezierPath takes only 5 sec. Running Self Symbol Name 14638.0ms 88.2 CGContextStrokePath 9587.0ms 57.8 QuartzTestView.. typical results call tree inverted you can see that strokeContext takes 9.5 sec. while strokeUIBezierPath takes only 5 sec. Running Self Symbol Name 14638.0ms 88.2 CGContextStrokePath 9587.0ms 57.8 QuartzTestView strokeContext 5051.0ms 30.4 ..
GCD, Threads, Program Flow and UI Updating http://stackoverflow.com/questions/7290931/gcd-threads-program-flow-and-ui-updating @selector performLongRunningWork withObject nil void performLongRunningWork id obj simulate 5 seconds of work I added a slider to the form I can slide it back and forth during the 5 sec. sleep 5 self performSelectorOnMainThread.. id obj simulate 5 seconds of work I added a slider to the form I can slide it back and forth during the 5 sec. sleep 5 self performSelectorOnMainThread @selector workDone withObject nil waitUntilDone YES void workDone id obj self.. queue ^ self performLongRunningWork dispatch_async main ^ self workDone void performLongRunningWork simulate 5 seconds of work I added a slider to the form I can slide it back and forth during the 5 sec. sleep 5 void workDone self feedbackLabel..
http://stackoverflow.com/questions/7437643/ios-ping-with-timeout for response too long. Windows ping command timeout I need to have w Timeout Specifies the amount of time in milliseconds to wait for the Echo Reply message that corresponds to a given Echo Request message to be received. If the Echo Reply.. is not received within the time out the Request timed out error message is displayed. The default time out is 4000 4 seconds . Simple Ping code I'm using http developer.apple.com library mac #samplecode SimplePing Introduction Intro.html iphone.. length to change the timeout CFSocketNativeHandle sock CFSocketGetNative self _socket struct timeval tv tv.tv_sec 0 tv.tv_usec 100000 0.1 sec setsockopt sock SOL_SOCKET SO_SNDTIMEO void tv sizeof tv bytesSent sendto sock packet bytes..
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