iOS 去掉首尾空格和换行符

    NSString *str =_textView.text;

    str = [str stringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]];//去除掉首尾的空白字符和换行字符

    str = [strstringByReplacingOccurrencesOfString:@"\r"withString:@""];

    str = [strstringByReplacingOccurrencesOfString:@"\n"withString:@""];

NSLog(@"%@",str);