iOS 去掉字符串中的特殊字符，并移除空格

NSCharacterSet doNotWant = [NSCharacterSet characterSetWithCharactersInString:@"@／：；（）¥「」＂、[]{}#%-+=\|~＜＞%^&*()+'""];
NSString * tempString = [[self.wordTextView.text componentsSeparatedByCharactersInSet: doNotWant]componentsJoinedByString: @""];

        NSString *returnString = [tempString stringByReplacingOccurrencesOfString:@" " withString:@""];
        
        [self.delegate FinishEditWith:returnString andIndex:self.index];