IOS阶段学习第18天笔记(归档与解归档操作)

 1 //创建一个二维数组（数组中每个元素又是一个数组对象）
 2 NSMutableArray *array1=[[NSMutableArray alloc]init];
 3 for(int i=0;i<4;i++){
 4   [array1 addObject:[NSString stringWithFormat:@"str%d",i+1]];
 5 }
 6  
 7 NSMutableArray *array2=[[NSMutableArray alloc]init];
 8  for(int i=0;i<5;i++){
 9    [array2 addObject:[NSNumber numberWithInt:arc4random()%100]];
10 }
11 
12 NSArray *bigArray=@[array1,array2];
13 //将数组对象写入文件，（先写入内存中，如果写入成功，马上存入文件）
14 [bigArray writeToFile:@"/Users/kingkong/Desktop/day08/array.plist" atomically:YES];
15 
16 //将plist文件的内容直接读取出存入数组
17 NSArray *newArray=[[NSArray alloc]initWithContentsOfFile:@"/Users/kingkong/Desktop/day08/array.plist"];
18 NSLog(@"%@",newArray);
19 
20 NSArray *emails=@[@"zhangsan@163.com",@"zhangsan@qq.com"];
21 //创建一个字典对象
22 NSDictionary *dict=[NSDictionary dictionaryWithObjectsAndKeys:@"zhangsan",@"name",@"123456",@"password",emails,@"email", nil];
23 //将字典对象写入文件
24 [dict writeToFile:@"/Users/kingkong/Desktop/day08/dict.plist" atomically:YES];
25 
26  //将plist文件的内如读取出来存入字典
27 NSDictionary *newDict=[NSDictionary dictionaryWithContentsOfFile:@"/Users/kingkong/Desktop/day08/dict.plist"];
28 NSLog(@"%@",newDict);