Truncate part of an NSString starting at a particular character

问题

I have a string

NSString * myOldString = @"This is a string (and this part is between brackets)"

Now, I want to truncate the string in such a way, that basically everything between the brackets, including the brackets, is truncated.

More precisely: I don't care what is happening after the first bracket at all.

I can't do a simple stringByReplacingOccurrencesOfString:, because I cannot predict what will be between the brackets. So, the resulting string should be:

"This is a string"

回答1:

One method:

NSArray *components = [myOldString componentsSeparatedByString:@"("];
NSString *newString = [components objectAtIndex:0];

Should also work for the case where there isn't a '('

回答2:

should be simply

NSRange r = [myOldString rangeOfString:@"("]
NSString new string = [myOldString substringToIndex:r.location];

if the braket is still there just -1

来源：https://stackoverflow.com/questions/932273/truncate-part-of-an-nsstring-starting-at-a-particular-character