String replacement in Objective-C

Question

How to replace a character is a string in Objective-C

User · Answer

The problem exists in old versions on the iOS. in the latest, the right-to-left works well. What I did, is as follows:

first I check the iOS version:

if (![self compareCurVersionTo:4 minor:3 point:0])

Than:

// set RTL on the start on each line (except the first)  
myUITextView.text = [myUITextView.text stringByReplacingOccurrencesOfString:@"\n"
                                                           withString:@"\u202B\n"];

User · Answer

NSString objects are immutable  they can t be changed   but there is a mutable subclass  NSMutableString  that gives you several methods for replacing characters within a string  It s probably your best bet

User · Answer

It also posible string replacement with stringByReplacingCharactersInRange withString   for  int i   0  i  lt  card length - 4  i           if     card substringWithRange NSMakeRange i  1   isEqual                   NSRange range   NSMakeRange i  1           card    card stringByReplacingCharactersInRange range withString                    out                 1234

User · Answer

NSString  stringreplace  yourString stringByReplacingOccurrencesOfString   search  withString   new string

User · Answer

You could use the method  -  NSString   stringByReplacingOccurrencesOfString  NSString   target                                          withString  NSString   replacement      to get a new string with a substring replaced  See NSString documentation for others   Example use  NSString  str     This is a string    str    str stringByReplacingOccurrencesOfString   string                                       withString   duck

User · Answer

If you want multiple string replacement   NSString  s     foo bar baz foo   NSCharacterSet  doNotWant    NSCharacterSet characterSetWithCharactersInString          s     s componentsSeparatedByCharactersInSet  doNotWant  componentsJoinedByString        NSLog        s        gt  foobarbazfoo

[ios] String replacement in Objective-C

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