Convert NSString separated by comma to NSArray

Question

Possible Duplicate:
Convert NSArray to NSString in Objective-C

I have an array of an NSArray myArray, here is the content:

 (
            "<MPConcreteMediaItem: 0x1b7dd0> 8671085923283003246",
            "<MPConcreteMediaItem: 0x1b7e50> 16275751483823231324",
            "<MPConcreteMediaItem: 0x1b7e70> 4976771456698615367"
 )

I used the code below to assign to an NSString myString:

NSString *myString = [myArray description];

And the out put is still as expected:

 (
            "<MPConcreteMediaItem: 0x1b7dd0> 8671085923283003246",
            "<MPConcreteMediaItem: 0x1b7e50> 16275751483823231324",
            "<MPConcreteMediaItem: 0x1b7e70> 4976771456698615367"
 )

Now, say I want to convert myString back to an array named newArray, I used this:

NSArray *newArray = [[NSArray alloc]init];
newArray = [myString componentsSeparatedByString:@","];

But the content of the newArray is now different:

(       
"(
    \"<MPConcreteMediaItem: 0x1b7dd0> 8671085923283003246\"",
        "
    \"<MPConcreteMediaItem: 0x1b7e50> 16275751483823231324\"",
        "
    \"<MPConcreteMediaItem: 0x1b7e70> 4976771456698615367\""
)"
)

Any idea what I need to do to fix this?

Why would you want to do this? Note that the description also features the newline characters and brackets, not just commas. — jrturton, Nov 20 '11 at 19:50

beryllium · Accepted Answer · 2011-11-20T21:37:10.013

43

There are two methods

Use

NSString *myString = [myArray componentsJoinedByString:@","]; //instead of [myArray description];

edited Nov 20 '11 at 21:37

answered Nov 20 '11 at 19:51

beryllium

29,669
15
106
125

Ashish Agarwal · Answer 2 · 2011-11-21T01:17:28.923

This is what the NSArray prints out.

"(
\"<MPConcreteMediaItem: 0x1b7dd0> 8671085923283003246\"",
    "
\"<MPConcreteMediaItem: 0x1b7e50> 16275751483823231324\"",
    "
\"<MPConcreteMediaItem: 0x1b7e70> 4976771456698615367\""
)"

To print out the individual elements in the array try this and see what happens

NSString *myString1 = [myArray objectAtIndex:1];
NSString *myString2 = [myArray objectAtIndex:2];
NSLog(myString1);
NSLog(myString2);

score 2 · Answer 3 · answered Nov 20 '11 at 19:52

2

Maybe I'm missing something but you are doing operations on "C" strings not NSStrings. You need more "@"s.

answered Nov 20 '11 at 19:52

dnevins

135
5

2

I am assuming this is not raw code but the output form an `NSLog()` therefore it will not have the `@`'s – Paul.s Nov 20 '11 at 19:58

Convert NSString separated by comma to NSArray

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