ios 字符串去除两端的空白 字符串去除所有空白

// 字符串去除两端的空白
+ (NSString *)removeWhitespaceAndNewlineFromBothEnd:(NSString *)str
{
NSCharacterSet *whitespace = [NSCharacterSet
whitespaceAndNewlineCharacterSet];
return [str
stringByTrimmingCharactersInSet:whitespace];
}

// 字符串去除所有空白
+ (NSString *)removeAllWhitespace:(NSString *)str
{
NSString *tmpStr = [self
removeWhitespaceAndNewlineFromBothEnd:str];
NSString *finalString = [tmpStr
stringByReplacingOccurrencesOfString:@" "
withString:@""];
return finalString;
}