Format array items for string output

I'm trying to display the items in an array us开发者_运维百科ing the following:

NSString *alertString = [NSString stringWithFormat:@"%@", path];

Which works fine, but when I display the string it gets displayed in the following way:

(

A,

B,

C,

D

)

Is there a way to get it to display in a different way, such as all on one line and without brackets, commas or line returns like this:

A B C D

You have a few options. It looks like the objects within the array have a description method that prints them the way you want to, so it may be as simple as using:

NSString *alertString = [path componentsJoinedByString:@" "];

If not, you could consider something like this:

NSMutableString *s = [NSMutableString string];
[path enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
    [s appendString:@" "];
    [s appendString:[obj someMethodThatFormatsTheObject]];
}];
NSString *alertString = [NSString stringWithString:s];

Or even:

NSMutableArray *a = [NSMutableArray array];
[path enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
    [a addObject:[obj sometMethodThatFormatsTheObject]];
}];
NSString *alertString = [a componentsJoinedByString:@" "];

If that path is an NSArray, you could use the -componentsJoinedByString: method to concatenate all strings in the array with the desired separator.

NSString* alertString = [path componentsJoinedByString:@" "];