iOS字符串截取

 // 截取（ ）中的字符串

NSRangestartRange = [self.userCopyNamerangeOfString:@"("];

        NSRangeendRange = [self.userCopyNamerangeOfString:@")"];

        NSRangerange =NSMakeRange(startRange.location+ startRange.length, endRange.location- startRange.location- startRange.length);

        NSString*result = [self.userCopyNamesubstringWithRange:range];

以后慢慢增加