1.字符串的替换函数
-
-(NSString )stringByReplacingOccurrencesOfString:(NSString )target withString:(NSString *)replacement;
- 用replacement替换target
NSString *str = @"http:&&www.xiaoningle.com&img&logo.png";
NSString *newStr = [str stringByReplacingOccurrencesOfString:@"&" withString:@"/"];
NSLog(@"newStr = %@", newStr);
输出结果: http://www.xiaoningle.com/img/logo.png
- -(NSString )stringByTrimmingCharactersInSet:(NSCharacterSet )set;
- 去除首尾
NSString *str = @" http://www.xiaoningle.com/img/logo.png ";
NSString *newStr = [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSLog(@"str =|%@|", str);
NSLog(@"newStr =|%@|", newStr);
输出结果:
str =| http://www.xiaoningle.com/img/logo.png |
newStr =|http://www.xiaoningle.com/img/logo.png|
NSString *str = @"***http://www.xiaoningle.com/img/logo.png***";
NSString *newStr = [str stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"*"]];
NSLog(@"str =|%@|", str);
NSLog(@"newStr =|%@|", newStr);
输出结果:
str =|***http://www.xiaoningle.com/img/logo.png***|
newStr =|http://www.xiaoningle.com/img/logo.png|
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