string = [[string componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@" z/-"]] componentsJoinedByString:@""];
示例：
NSString *string = @"6225-021 xyz1234/"; NSString *afterString = [[string componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@" z/-"]] componentsJoinedByString:@""]; NSLog(@"before:%@, after:%@", string, afterString); 2014-02-28 15:19:12.626 XiaoJiZhuoMi[6188:a0b] before:6225-021 xyz1234/, after:6225021xy1234
Objective-c: 移除字符串中的指定字符,布布扣,bubuko.com
原文：http://www.cnblogs.com/ihojin/p/remove-character-in-string.html