NSString* str = [@"%E4%B8%AD%E5%9B%BD" stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog(@"str=%@", str);
NSString *str1 = @"中国";
NSString *str2 = [str1 stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog(@"str2 = %@",str2);
12.关于归档反归档
#warning 归档第一步:对student对象进行归档操作
NSString *stuPath = [documentPath stringByAppendingPathComponent:@"student.av"];
BOOL stuResult = [NSKeyedArchiver archiveRootObject:stu toFile:stuPath];
if (stuResult) {
NSLog(@"stu归档成功");
}
#warning 归档第二步: 反归档取出文件中的数据
Student *stu1 = [NSKeyedUnarchiver unarchiveObjectWithFile:stuPath];
NSLog(@"name = %@, age = %ld, sex = %@", stu1.name, stu1.age, stu1.sex);