IOS简单的字串替换方法stringByTrimmingCharactersInSet 和空格的替换 （）

  NSString *str = @"一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入";
      NSMutableCharacterSet *set = [[NSMutableCharacterSet alloc] init];
      [set formUnionWithCharacterSet:[NSCharacterSet lowercaseLetterCharacterSet]];//小写字母
      NSLog(@"1 %@",[str stringByTrimmingCharactersInSet:set]);
      [set formUnionWithCharacterSet:[NSCharacterSet uppercaseLetterCharacterSet]];//大写字母
      NSLog(@"2 %@",[str stringByTrimmingCharactersInSet:set]);
      [set formUnionWithCharacterSet:[NSCharacterSet symbolCharacterSet]];//符号
      NSLog(@"3 %@",[str stringByTrimmingCharactersInSet:set]);
      [set formUnionWithCharacterSet:[NSCharacterSet punctuationCharacterSet]];//标点
     NSLog(@"4 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet controlCharacterSet]];//控制符
     NSLog(@"5 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet decimalDigitCharacterSet]];//小数
     NSLog(@"6 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet letterCharacterSet]];//文字
     NSLog(@"7 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet nonBaseCharacterSet]];//非基础
     NSLog(@"8 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet alphanumericCharacterSet]];//字母数字
     NSLog(@"9 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet decomposableCharacterSet]];//可分解
     NSLog(@"10 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet illegalCharacterSet]];//非法
     NSLog(@"11 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet capitalizedLetterCharacterSet]];//大写
     NSLog(@"12 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet newlineCharacterSet]];//换行符
     NSLog(@"13 %@",[str stringByTrimmingCharactersInSet:set]);
     [set formUnionWithCharacterSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];//空格换行
     NSLog(@"14 %@",[str stringByTrimmingCharactersInSet:set]);

 -- ::01.863 yingkong1987[:fb03]  一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
  -- ::01.864 yingkong1987[:fb03]  一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
  -- ::01.864 yingkong1987[:fb03]  一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
  -- ::01.864 yingkong1987[:fb03]  一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
  -- ::01.865 yingkong1987[:fb03]  一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
  -- ::01.865 yingkong1987[:fb03]  一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
  -- ::01.865 yingkong1987[:fb03]   (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
  -- ::01.865 yingkong1987[:fb03]   (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
  -- ::01.865 yingkong1987[:fb03]   (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
 -- ::01.866 yingkong1987[:fb03]   (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
 -- ::02.170 yingkong1987[:fb03]   (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
 -- ::02.170 yingkong1987[:fb03]   (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
 -- ::02.170 yingkong1987[:fb03]   (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
 -- ::02.170 yingkong1987[:fb03]  

原文转自 ：http://blog.csdn.net/huifeidexin_1/article/details/7977857