2014/10/15 下午 10:13:45
iphone Programming Glossary: selectorsNSURLConnection NSURLRequest proxy for asynchronous web service calls http://stackoverflow.com/questions/1959243/nsurlconnection-nsurlrequest-proxy-for-asynchronous-web-service-calls delegate self successSelector @selector didFinishWithData failSelector @selector didFailWithError Implement your selectors like this void didFinishWithData NSData data Do something with data void didFailWithError NSError error Do something with..
UIControl - changing assigned selectors: addTarget & removeTarget http://stackoverflow.com/questions/1978751/uicontrol-changing-assigned-selectors-addtarget-removetarget changing assigned selectors addTarget removeTarget I'm using 10 buttons in my interface and need from time to time to change the button's selector... that if I change the selector using the addTarget method sans the removeTarget method that I'll essentially stack up selectors for my UIButton to fire when it is pressed. iphone objective c cocoa touch uibutton uicontrol share improve this question..
SEL performSelector and arguments http://stackoverflow.com/questions/2716143/sel-performselector-and-arguments correct syntax. MyClass init SEL sel owner NSObject parent int i 10 parent performSelector sel i iphone objective c selectors share improve this question Take a look at the NSObject documentation. In this case parent performSelector sel withObject..
How does Apple know you are using private API? http://stackoverflow.com/questions/2842357/how-does-apple-know-you-are-using-private-api as UITouch._phase which could be the cause of rejection of Three20 based apps last few months. 3. Listing Objective C selectors or strings Objective C selectors are stored in a special region of the binary and therefore Apple could extract the content.. the cause of rejection of Three20 based apps last few months. 3. Listing Objective C selectors or strings Objective C selectors are stored in a special region of the binary and therefore Apple could extract the content from there and check if you've.. from there and check if you've used some undocumented Objective C methods such as UIDevice setOrientation . Since selectors are independent from the class you're messaging even if your custom class defines setOrientation irrelevant to UIDevice..
Dynamic UIMenuItems with @selector and dynamic methods http://stackoverflow.com/questions/3249182/dynamic-uimenuitems-with-selector-and-dynamic-methods menu item void forwarder UIMenuController mc NSLog @ URL for item is @ actionDict objectForKey _cmd To generate the selectors you could use something like SEL uniqueActionSelector NSString unique ... the unique part NSString selString NSString stringWithFormat..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone Conceptual Blocks Articles 00_Introduction.html They bend your head a little but if you think of them as notification selectors or callbacks it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback. So..
Passing parameters to addTarget:action:forControlEvents http://stackoverflow.com/questions/3988485/passing-parameters-to-addtargetactionforcontrolevents selector to make button able to call it when certain action occurs touch up in your case . Controls can use 3 types of selectors to respond to actions all of them have predefined meaning of their parameters with no parameters action @selector switchToNewsDetails..
Using NSUserDefaults for storing UISwitch state http://stackoverflow.com/questions/4231536/using-nsuserdefaults-for-storing-uiswitch-state or device the switch state is not restored... What is my mistake in the above code Cheers iSee iphone objective c selectors nsuserdefaults uiswitch share improve this question you can use following code NSUserDefaults standardUserDefaults setBool..
Sorting NSArray which many contain number http://stackoverflow.com/questions/4588542/sorting-nsarray-which-many-contain-number
method_missing-like functionality in objective-c (i.e. dynamic delegation at run time) http://stackoverflow.com/questions/4630797/method-missing-like-functionality-in-objective-c-i-e-dynamic-delegation-at-run methodSignatureForSelector to return the correct NSMethodSignature required for forwardInvocation to work on unknown selectors . It's also recommended that you override respondsToSelector to declare that you can handle the selector in question. share..
UIWebView without Copy/Paste and selection rectangle when showing documents http://stackoverflow.com/questions/5515522/uiwebview-without-copy-paste-and-selection-rectangle-when-showing-documents last thing I can think of that might work have you tested adding the selector @selector select to the list of disabled selectors EDIT Ok as you what to display a PDF rather then a html page you can try this. Setup Put the webView in a scrollView Set..
Using NSMutableDictionary as backing store for properties http://stackoverflow.com/questions/5873776/using-nsmutabledictionary-as-backing-store-for-properties to the class using the Objective C runtime API. You can add the same implementation s for many different selectors. For your purpose have a function or method that examines the selector using NSStringForSelector and regular NSString examining..
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 if your object is supposed to be released as in #3 above that is the method you're calling returns a new object . For selectors you're trying to call that return void or other non objects you could enable compiler features to ignore the warning but.. are rarely an issue this isn't likely to come up. Static Selectors Interestingly the compiler will not complain about selectors declared statically _controller performSelector @selector someMethod The reason for this is because the compiler actually..
Need some help understanding transient properties in Core Data http://stackoverflow.com/questions/7504391/need-some-help-understanding-transient-properties-in-core-data different objects are interchangeable. Even if a managed object reports as a fault it will still respond to unmodeled selectors. Accessing any modeled property causes the fault to fire and the object becomes fully active. Core Data does a great deal..
iMessage Style Receding Keyboard in an iOS App http://stackoverflow.com/questions/7780753/imessage-style-receding-keyboard-in-an-ios-app @selector keyboardDidShow name UIKeyboardDidShowNotification object nil return Add methods to specified as the selectors for the notifications method is called whenever the keyboard is about to be displayed void keyboardWillShow NSNotification..
How to change the Color of text in UITabBarItem in iOS 5 http://stackoverflow.com/questions/8412010/how-to-change-the-color-of-text-in-uitabbaritem-in-ios-5 iOS v5.0 and later you can customize the appearance of tab bars by setting item label text attributes using appearance selectors declared by UIBarItem. You can also use the methods listed in 𦒄ustomizing Appearance. You can customize the appearance of..
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