Getting the substring from a certain character in NSString

问题

If I have an NSString that is initially:

"ABCDE*FGHI"

How do I make it turn into

"FGHI"

In other words, everything from the asterisk onwards is kept.

Likewise, how would I turn it into:

"ABCDE"

(everything up to the asterisk is kept)

Thanks

回答1:

NSString *myString = @"ABCDE*FGHI"; 
NSArray *myArray = [myString componentsSeparatedByString:@"*"];

key 0 of myArray will contain @"ABCDE"
key 1 will contain @"FGHI"

If you want more than one character to be the separator,
use componentsSeparatedByCharactersInSet:

NSString *myString = @"ABCDE*FGHI-JKL"; 
NSArray *myArray = [myString componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"*-"]];

key 0 of myArray will contain @"ABCDE"
key 1 will contain @"FGHI"
key 2 will contain @"JKL"

回答2:

NSString *myString = @"ABCDE*FGHI";
NSString *subString = [myString substringWithRange: NSMakeRange(0, [myString rangeOfString: @"*"].location)];

回答3:

NSString *myString = @"ABCDE*FGHI";
NSArray *myArray = [myString componentsSeparatedByString:@"*"];

回答4:

NSString *yourString = @"ABCDE*FGHI";

NSMutableArray * array = [[NSMutableArray alloc] initWithArray:[yourString componentsSeparatedByString:@"*"]];

for(int i =0 ; i < array.count ; i++){
    NSLog(@"- %d : %@ \n",i,[array objectAtIndex:i]);
}

来源：https://stackoverflow.com/questions/3051960/getting-the-substring-from-a-certain-character-in-nsstring

标签

iphone

objective-c

nsstring