Convert NSArray to NSString in Objective-C

I am wondering how to convert an **NSArray** ` [@"Apple", @"Pear ", 323, @"Orange"] ` to a string in **Objective-C**.

One approach would be to iterate over the array, calling the `description` message on each item:

NSMutableString * result = [[NSMutableString alloc] init];
for (NSObject * obj in array)
{
[result appendString:[obj description]];
}
NSLog(@"The concatenated string is %@", result);

Another approach would be to do something based on each item's class:

NSMutableString * result = [[NSMutableString alloc] init];
for (NSObject * obj in array)
{
if ([obj isKindOfClass:[NSNumber class]])
{
// append something
}
else
{
[result appendString:[obj description]];
}
}
NSLog(@"The concatenated string is %@", result);

If you want commas and other extraneous information, you can just do:

NSString * result = [array description];

I recently found a really good tutorial on Objective-C Strings:

[To see links please register here]

And I thought that this might be of interest:

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];
}

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

I think Sanjay's answer was almost there but i used it this way

NSArray *myArray = [[NSArray alloc] initWithObjects:@"Hello",@"World", nil];
NSString *greeting = [myArray componentsJoinedByString:@" "];
NSLog(@"%@",greeting);

Output :

2015-01-25 08:47:14.830 StringTest[11639:394302] Hello World

As Sanjay had hinted - I used method *componentsJoinedByString* from NSArray that does joining and gives you back **NSString**

BTW **NSString** has reverse method *componentsSeparatedByString* that does the splitting and gives you **NSArray** back .

The way I know is easy.

var NSArray_variable = NSArray_Object[n]
var stringVarible = NSArray_variable as String

`n` is the inner position in the array
This in SWIFT Language.
It might work in **Objective C**

NSString * str = [componentsJoinedByString:@""];

and you have dic or multiple array then used bellow

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

NSArray *array = [NSArray arrayWithObjects:@"One",@"Two",@"Three", nil];
NSString *stringFromArray = [array componentsJoinedByString:@" "];

The first line initializes an array with objects.
The second line joins all elements of that array by adding the string inside the "" and returns a string.

Swift 3.0 solution:

let string = array.joined(separator: " ")

**Objective C Solution**

NSArray * array = @[@"1", @"2", @"3"];
NSString * stringFromArray = [[array valueForKey:@"description"] componentsJoinedByString:@"-"]; // "1-2-3"

Those who are looking for a solution in `Swift`

If the array contains strings, you can use the String's join method:

var array = ["1", "2", "3"]

let stringFromArray = "-".join(array) // "1-2-3"
**In Swift 2:**

var array = ["1", "2", "3"]

let stringFromArray = array.joinWithSeparator("-") // "1-2-3"


**In Swift 3 & 4**

var array = ["1", "2", "3"]

let stringFromArray = array.joined(separator: "-") // "1-2-3"