Converting NSArray to NSString

Question

I wish to know how to convert an NSArray (for example: ) into an Objective-C string (NSString).

Also, how do I concatenate two strings together? So, in PHP it's:

$variable1 = "string one":
$variable2 = $variable1;

But I need it in Objective-C

Answer 1

Possible duplication: Convert NSArray to NSString in Objective-C

Firstly, that is not PHP concatenation, This is:

  $variable1 = "Hello":
  $variable1 .= "World";

see: https://stackoverflow.com/a/11441389/1255945

Next, Stackoverflow isnt a personal tutor. You should only post here specific problems and provide as much code and information as you can, not just stuff thats basically saying "I cant be bothered to look myself, tell me".

I must admit I have done this myself so i'm not having a go at you, just trying to be polite as share my knowledge and experience

With that in mind, to convert an NSArray to NSString

Taken from: http://ios-blog.co.uk/tutorials/objective-c-strings-a-guide-for-beginners/

  NSString * resultString = [[array valueForKey:@"description"] componentsJoinedByString:@""];

If you want to split the string into an array use a method called componentsSeparatedByString to achieve this:

  NSString *yourString = @"This is a test string";
  NSArray *yourWords = [myString componentsSeparatedByString:@" "];

  // yourWords is now: [@"This", @"is", @"a", @"test", @"string"]

if you need to split on a set of several different characters, use NSString’s componentsSeparatedByCharactersInSet:

  NSString *yourString = @"Foo-bar/iOS-Blog";
  NSArray *yourWords = [myString componentsSeparatedByCharactersInSet:
              [NSCharacterSet characterSetWithCharactersInString:@"-/"]
            ];

  // yourWords is now: [@"Foo", @"bar", @"iOS", @"Blog"]

Note however that the separator string can’t be blank. If you need to separate a string into its individual characters, just loop through the length of the string and convert each char into a new string:

  NSMutableArray *characters = [[NSMutableArray alloc] initWithCapacity:[myString length]];
    for (int i=0; i < [myString length]; i++) {
    NSString *ichar  = [NSString stringWithFormat:@"%c", [myString characterAtIndex:i]];
    [characters addObject:ichar];
}

Hope this helps, and Good luck developing :)