How to convert NSArray into NSString

Question

How to convert NSArray into NSString in objective-c?

Could you be more specific? An NSArray can contain instances of any Objective-C class. — Frank Shearar, Mar 05 '10 at 13:02
See: http://stackoverflow.com/questions/1828665/convert-nsarray-to-nsstring-objective-c — mfazekas, Mar 05 '10 at 13:07
[Convert NSString separated by comma to NSArray](http://stackoverflow.com/a/8204215/194544) — beryllium, Mar 26 '12 at 19:53
Well, if you're not too particular you can always use `description`. — Hot Licks, Aug 02 '13 at 16:00

score 29 · Accepted Answer · answered Mar 05 '10 at 13:07

29

Bearing in mind that you don't say what's in the NSArray, you can do this:

NSArray *arr = [NSArray arrayWithObjects: @"foo", @"bar", @"baz"];
[arr componentsJoinedByString: @","]

answered Mar 05 '10 at 13:07

Frank Shearar

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Yes, I find that this is strongly assuming that you are having text. Or is it using description field instead? Most likely... But barely usable in that context. – nembleton Oct 01 '12 at 21:26

score 12 · Answer 2 · answered Mar 05 '10 at 15:54

12

Aternatively to Frank's method, which works pretty well, you could also do

NSString *myArrayString = [array description];

The default implementation of description on NSArray will print out the contents in a neatly formatted fashion.

answered Mar 05 '10 at 15:54

Jasarien

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one problem here is that myArrayString will have {} around the text...how to get rid of this? thanks! – TommyG Nov 04 '11 at 23:26

score 4 · Answer 3 · edited Dec 08 '13 at 06:36

4

This is how I have converted my NSArray to NSString

NSError *error = nil;

NSData *data = [NSJSONSerialization dataWithJSONObject:aArray options:kNilOptions error:&error];

NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

edited Dec 08 '13 at 06:36

Radim Köhler

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answered Dec 08 '13 at 06:17

TheGreen

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This is the safest method I've found assuming you eventually want to get back to an array state. Thanks! – Albert Renshaw May 02 '17 at 01:21

score 1 · Answer 4 · edited Aug 10 '17 at 07:25

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Swift 3.0 latest updates

let string = array.componentsJoined(by: ",")

you can used any separator in function which you want to separate the array elements currently in above example is ",".

edited Aug 10 '17 at 07:25

Sai Apps

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answered Feb 20 '17 at 13:39

Chavda jaydeep

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How to convert NSArray into NSString

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