nsstring

I want to create a method and use a string value "redColor" to set the UIColor for a label. tableColorName is the NSString "redColor" and I tried to apply a selector to create the UIColor and apply it to my textLabel. Thanks -(void) changeLabelColor { SEL labelColor = NSSelectorFromString([NSString stringWithFormat:[@"%@", tableColorName]]); UIColor *color = [[UIColor class] performSelector:labelColor]; self.textLabel.textColor = color; } Use this method -(UIColor *)giveColorfromStringColor:(NSString *)colorname { SEL labelColor = NSSelectorFromString(colorname); UIColor *color = [UIColor

I have a problem with [NSString strigWithFormat:format] because it returns an id, and I have a lot of code where I changed a NSString var to an other personal type. But the compiler does not prevent me that there are places where a NSString is going to be set into another type of object. So I'm writing a category of NSString and I'm goind to replace all my calls to stringWithFormat to myStringWithFormat . The code is : @interface NSString (NSStringPerso) + (NSString*) myStringWithFormat:(NSString *)format; @end @implementation NSString (NSStringPerso) + (NSString*) myStringWithFormat:(NSString

I'm trying to find out the best way to count the number of uppercase characters that are in a NSString. I know how to find out if a certain character is uppercase by using this code: NSString *s = @"This is a string"; BOOL isUppercase = [[NSCharacterSet uppercaseLetterCharacterSet] characterIsMember:[s characterAtIndex:0]]; What would be the best way to count the number of uppercase letters in a NSString? Thanks. NSString *s = @"This is a string"; int count=0; for (i = 0; i < [s length]; i++) { BOOL isUppercase = [[NSCharacterSet uppercaseLetterCharacterSet] characterIsMember:[s

How can I draw a long text string in a rect with tail truncation? I tried to use drawInRect:withAttributes: with NSLineBreakByTruncatingTail paragraph style, but it always renders text on a single line. It only renders multi-line text with NSLineBreakByWordWrapping and NSLineBreakByCharWrapping break modes and when using this option there is no truncation. Is there any property that I need to set on the paragraph style in order to make this happen? Or is this simply no longer supported, in which case I can see no alternative other than continuing to use deprecated methods. The deprecated

I would like to loop through an NSString and call a custom function on every word that has certain criterion (For example, "has 2 'L's"). I was wondering what the best way of approaching that was. Should I use Find/Replace patterns? Blocks? -(NSString *)convert:(NSString *)wordToConvert{ /// This I have already written Return finalWord; } -(NSString *) method:(NSString *) sentenceContainingWords{ // match every word that meets the criteria (for example the 2Ls) and replace it with what convert: does. } The two ways I know of looping an array that will work for you are as follows: NSArray

I am trying to check the URL entered by the user, but I am fighting against some errors and warnings. -(BOOL) textFieldShouldReturn:(UITextField *)textField { //check "http://" NSString *check = textField.text; NSString *searchString = @"http://"; NSRange resultRange = [check rangeWithString:searchString]; BOOL result = resultRange.location != NSNotFound; if (result) { NSURL *urlAddress = [NSURL URLWithString: textField.text]; } else { NSString *good = [NSString stringWithFormat:@"http://%@", [textField text]]; NSURL *urlAddress = [NSURL URLWithString: good]; } // open url NSURLRequest