2014/10/15 下午 10:12:55
iphone Programming Glossary: printshttp://stackoverflow.com/questions/1180550/weird-switch-error-in-obj-c
What's the trick to pass an event to the next responder in the responder chain? http://stackoverflow.com/questions/1207287/whats-the-trick-to-pass-an-event-to-the-next-responder-in-the-responder-chain View automatically has a MyView which is a UIView . Now inside of MyView I put that code like above with a NSLog that prints touched MyView . But I forward the event to the next responder just like above. And inside the ViewController I have another.. to the next responder just like above. And inside the ViewController I have another touchesBegan method that just prints an NSLog a la touched view controller . Now guess what When I touch the MyView it prints touched MyView . When I touch outside.. touchesBegan method that just prints an NSLog a la touched view controller . Now guess what When I touch the MyView it prints touched MyView . When I touch outside of MyView which is the view of the VC then I get a touched view controller . So both..
Cocoa: What's the Difference between the frame and the bounds? http://stackoverflow.com/questions/1210047/cocoa-whats-the-difference-between-the-frame-and-the-bounds imagine a view that has a size of 100x100 width x height positioned at 25 25 x y of its superview. The following code prints out this view's bounds and frame This method is in the view controller of the superview void viewDidLoad super viewDidLoad..
How to detect which 3rd sdk use UDID? http://stackoverflow.com/questions/15997031/how-to-detect-which-3rd-sdk-use-udid run strings and grep on the library files. i.e. strings libSomething.a grep uniqueIdentifier If you see any line that prints exactly uniqueIdentifier there is a risk they call it. This method is not 100 bullet proof. But I'd expect Apple doing a..
I need to inspect the view hierarchy on an iPhone program http://stackoverflow.com/questions/2343246/i-need-to-inspect-the-view-hierarchy-on-an-iphone-program share improve this question Along the lines of what Yannick suggests Erica Sadun has code here that pretty prints the view hierarchy with class and frame information . You can make this into a UIView category with the following interface..
How to dump data stored in objective-c object (NSArray or NSDictionary) http://stackoverflow.com/questions/289241/how-to-dump-data-stored-in-objective-c-object-nsarray-or-nsdictionary description to print a pretty useful recursive description of their contents but the default NSObject description prints only the pointer value corresponding to the instance. If you control the code for the types in question you can override..
Compress/Decompress NSString in objective-c (iphone) using GZIP or deflate http://stackoverflow.com/questions/3015904/compress-decompress-nsstring-in-objective-c-iphone-using-gzip-or-deflate Hello my name is Steven Elliott which is gzipped and then converted to a base64 string. Unfortunately the result that prints using NSLog is just blank. NSString encodedGzippedString @ GgAAAB LCAAAAAAABADtvQdgHEmWJSYvbcp7f0r1StfgdKEIgGATJNiQQBDswYjN5pLsHWlHIymrKoHKZVZlXWYWQMztnbz33nvvvffee..
Obtaining an NSDecimalNumber from a locale specific string? http://stackoverflow.com/questions/317311/obtaining-an-nsdecimalnumber-from-a-locale-specific-string YES NSDecimalNumber decimalNumber formatter numberFromString s NSLog decimalNumber stringValue prints 0.07000000000000001 I'm using 10.4 mode in addition to being recommended per the documentation it is also the only mode..
How can I create a small Mac app that receives data over the WiFi network from an iOS app? http://stackoverflow.com/questions/3902282/how-can-i-create-a-small-mac-app-that-receives-data-over-the-wifi-network-from-a receives data over the WiFi network from an iOS app What I need is to have a simple screen in this Mac app that just prints a string as the iPhone is transmitting strings through the WiFi network. This string is simply a string value from a slider..
App crashes with 4.2 iPhone simulator 'set start-with-shell off' http://stackoverflow.com/questions/4271480/app-crashes-with-4-2-iphone-simulator-set-start-with-shell-off with shell off' on Xcode I'm tried to add this line to .gdbinit but without luck. With 4.0 4.1 SDK iPhone Simulator prints warnings about attempt to call symbol that is not present on the iPhone in debug window but app don't crashes. Using using..
How can I extract a URL from a sentence that is in a NSString? http://stackoverflow.com/questions/4590440/how-can-i-extract-a-url-from-a-sentence-that-is-in-a-nsstring someString options NSMatchingCompleted range NSMakeRange 0 someString length NSLog @ @ match Correctly prints 'http abc.com efg.php EFAei687e3EsA' That will extract the first URL in any string of course this does no error checking..
iOS UIImageJPEGRepresentation error: Not a JPEG file: starts with 0xff 0xd9 http://stackoverflow.com/questions/5081297/ios-uiimagejpegrepresentation-error-not-a-jpeg-file-starts-with-0xff-0xd9 draw the image in a table cell and it is fine. Now if I try to use UIImageJPEGRepresentation myImage 1.0 the debugger prints out these lines Error Not a JPEG file starts with 0xff 0xd9 Error Application transferred too few scanlines And the function..
been having a little confusion about the retainCount of NSURLConnection http://stackoverflow.com/questions/5220902/been-having-a-little-confusion-about-the-retaincount-of-nsurlconnection request delegate self NSLog @ aaaaaaaaa d _conn retainCount url release request release _conn release turns out it prints aaaaaaaaaaaaa 2 shouldn't it be 1 Or there are some kind of exception out there.Then I change it NSURL url NSURL alloc initWithString..
http://stackoverflow.com/questions/5270241/complete-list-of-lifecycle-functions-of-viewcontroller-from-starting-to-end-of-t called call in each method. Experienced programmers would use NSLog @ s __PRETTY_FUNCTION__ because it automatically prints the method name and can be copied pasted faster. The View Controller Programming Guide can be handy too. It explains all..
NSDate not returning correct date http://stackoverflow.com/questions/6554999/nsdate-not-returning-correct-date stringDate data description Right now it's July 1 2011 11 43 pm. My iPod even says that on the top bar. But stringDate prints out 2011 07 02 03 43 46 0000 This is obviously wrong. I have used NSDate millions of times but never had this problem. What..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature there was some conflict with the static declared in the subclass and added the extra NSLog. But look what that NSLog prints 2011 07 15 16 35 24.322 DemoApp 214 307 Category's locale __NSCFLocale 0x160550 en_US_POSIX 2011 07 15 16 35 24.338 DemoApp..
How to check if a font is available in version of iOS? http://stackoverflow.com/questions/8529593/how-to-check-if-a-font-is-available-in-version-of-ios fonts CourierNewPSMT CourierNewPS BoldMT CourierNewPS BoldItalicMT CourierNewPS ItalicMT The following example code prints a list of each font in every family on the current device NSArray fontFamilies UIFont familyNames for int i 0 i fontFamilies..
http://stackoverflow.com/questions/937136/lua-on-iphone framework to add liblua.a and I have used add existing files to add the include directory. This works as expected and prints the string hi from LUA . When I try the same thing in a iPhone project it gives the errors _luaL_newstate referenced from..
Login to Facebook using FBGraph http://stackoverflow.com/questions/11805078/login-to-facebook-using-fbgraph want to connect to Facebook from my iPhone app. I followed FBGraph API to see how we can use Facebook in our App like Prints the information of user which is logged in FbGraphResponse fb_graph_response fbGraph doGraphGet @ me withGetVars nil NSLog..
Core Data Boolean property NSNumber doesn't remember it's boolean http://stackoverflow.com/questions/14029473/core-data-boolean-property-nsnumber-doesnt-remember-its-boolean the model forgets that it's a boolean NSLog @ @ strcmp self.isResolved objCType @encode BOOL 0 @ equal @ different Prints different . What is up with that iphone objective c ios core data share improve this question What is up with that..
Convert decimal to fraction in Objective-C? http://stackoverflow.com/questions/5552537/convert-decimal-to-fraction-in-objective-c printf Real .3f fraction ld ld error .3f n aReal aFraction.nominator aFraction.denominator aFraction.error Prints this Real 123.450 fraction 3827 31 error 0.002 Last but not least let's see how we get our newly crafted fraction into out..
remove non ASCII characters from NSString in objective-c http://stackoverflow.com/questions/6361586/remove-non-ascii-characters-from-nsstring-in-objective-c
How do I verify reference count in ARC mode? http://stackoverflow.com/questions/8863269/how-do-i-verify-reference-count-in-arc-mode in main NSNumber n0 NSNumber alloc initWithInt 0 NSLog @ 0 reference count ld CFGetRetainCount __bridge CFTypeRef n0 Prints 2 in my test So NSNumber likely caches or at least reuses some instances. But not others n0 NSNumber alloc initWithInt 200.. But not others n0 NSNumber alloc initWithInt 200 NSLog @ n0 reference count ld CFGetRetainCount __bridge CFTypeRef n0 Prints 1 I am the sole owner of this instance. There could be weak or unretained references to it but no other strong references... NSNumber n1 NSNumber alloc initWithInt 200 NSLog @ n1 reference count ld CFGetRetainCount __bridge CFTypeRef n1 Prints 1 again. New instance with same value as prior instance. You could of course compare pointers to see that they are separate..
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