2014/10/15 下午 10:13:08
iphone Programming Glossary: rangeofcharacterfromsethttp://stackoverflow.com/questions/1757303/parsing-json-dates-on-iphone timezoneDelimiter NSCharacterSet characterSetWithCharactersInString @ NSRange rangeOfTimezoneSymbol timestampString rangeOfCharacterFromSet timezoneDelimiter scanner dealloc if rangeOfTimezoneSymbol.length 0 scanner NSScanner alloc initWithString timestampString..
Non US characters in section headers for a UITableView http://stackoverflow.com/questions/2167857/non-us-characters-in-section-headers-for-a-uitableview nonBaseCharacterSet NSRange range NSMakeRange decomposedString length 0 while range.location 0 range decomposedString rangeOfCharacterFromSet nonBaseSet options NSBackwardsSearch range NSMakeRange 0 range.location if range.length 0 break decomposedString deleteCharactersInRange..
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 newline character then the current cursor moves to the end of that word if c 32 c 10 NSRange delimiter textView.text rangeOfCharacterFromSet NSCharacterSet whitespaceAndNewlineCharacterSet options NSLiteralSearch range NSMakeRange textView.selectedRange.location.. 0 isFirstLine NO 1. Adjusts startOfLine to the beginning of the first word before startOfLine NSRange delimiter head rangeOfCharacterFromSet NSCharacterSet whitespaceAndNewlineCharacterSet options NSBackwardsSearch range NSMakeRange 0 startOfLine Updates startsOfLine..
Sorting an NSArray like the MPMediaPickerController/iPod Library http://stackoverflow.com/questions/4707892/sorting-an-nsarray-like-the-mpmediapickercontroller-ipod-library length 0 return NSString stringWithString str NSCharacterSet numbersSet NSCharacterSet decimalDigitCharacterSet if str rangeOfCharacterFromSet numbersSet options 0 range NSMakeRange 0 1 .location NSNotFound return NSString stringWithString str NSRange range NSMakeRange.. 4 range.length range.location NSCharacterSet lettersSet NSCharacterSet letterCharacterSet NSUInteger letterOffset str rangeOfCharacterFromSet lettersSet options 0 range range .location if letterOffset NSNotFound return NSString stringWithString str letterOffset..
Replace multiple characters in a string in Objective-C? http://stackoverflow.com/questions/713918/replace-multiple-characters-in-a-string-in-objective-c
textField:shouldChangeCharactersInRange:replacementString: http://stackoverflow.com/questions/7531834/textfieldshouldchangecharactersinrangereplacementstring charSet NSCharacterSet characterSetWithCharactersInString @ 0123456789 invertedSet retain NSRange location string rangeOfCharacterFromSet charSet return location.location NSNotFound iphone uitextfield uitextfielddelegate share improve this question The..
allow only alphanumeric characters for a UITextField http://stackoverflow.com/questions/7541803/allow-only-alphanumeric-characters-for-a-uitextfield UITextField field shouldChangeCharactersInRange NSRange range replacementString NSString characters return characters rangeOfCharacterFromSet blockedCharacters .location NSNotFound in dealloc blockedCharacters release Note that you 耱l need to declare that your class..
How to know if a UITextField in iOS has blank spaces http://stackoverflow.com/questions/8238691/how-to-know-if-a-uitextfield-in-ios-has-blank-spaces you want to check whether there is any whitespace anywhere in the text you can do it like this NSRange range rawString rangeOfCharacterFromSet whitespace if range.location NSNotFound There is whitespace. If you want to prevent the user from entering whitespace at..
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