iOS开发中多对象归档操作

Sian

1、NSData方式多对象归档

1.     // 1、创建归档路径
2.     NSString *dataPath = [documentsPath stringByAppendingPathComponent:@"data.plist"];
3.     // 2、创建可变数据对象
4.     NSMutableData *data = [NSMutableData data];
5.     // 3、创建归档
6.     NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];
7.     // 4、归档中添加对象元素
8.     [archiver encodeObject:array forKey:@"array"];
9.     [archiver encodeObject:dict forKey:@"dict"];
10.     [archiver encodeObject:string forKey:@"string"];
11.     [archiver encodeObject:imageData forKey:@"image"];
12.     // 5、结束归档
13.     [archiver finishEncoding];
14.     // 6、写入本地沙盒
15.     [data writeToFile:dataPath atomically:YES];
16.     // 7、取出归档即解档
17.     NSData *data1 = [NSData dataWithContentsOfFile:dataPath];
18.     NSKeyedUnarchiver *unarchive1 = [[NSKeyedUnarchiver alloc] initForReadingWithData:data1];
19.     // 8、还原各对象
20.     NSArray *array1 = [unarchive1 decodeObjectForKey:@"array"];
21.     NSDictionary *dict1 = [unarchive1 decodeObjectForKey:@"dict"];
22.     NSString *string1 = [unarchive1 decodeObjectForKey:@"string"];
23.     UIImage *imag1 = [UIImage imageWithData:[unarchive1 decodeObjectForKey:@"image"]];

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2、数组方式进行多对象归档

1.     // 1、创建归档路径
2.     NSString *dataPath2 = [documentsPath stringByAppendingPathComponent:@"data.array"];
3.     // 2、创建多对象数组
4.     NSArray *arrayArchiver = @[array, dict, string, imageData];
5.     // 3、归档数组
6.     [NSKeyedArchiver archiveRootObject:arrayArchiver toFile:dataPath2];
7.     // [arrayArchiver writeToFile:dataPath2 atomically:YES];
8.     // 4、取出归档即解档
9.     NSArray *getArray2 = [NSKeyedUnarchiver unarchiveObjectWithFile:dataPath2];
10.     //NSArray *getArray1 = [NSArray arrayWithContentsOfFile:dataPath2];
11.     // 5、还原数组中各对象
12.     NSArray *array2 = getArray2[0];
13.     NSDictionary *dict2 = getArray2[1];
14.     NSString *string2 = getArray2[2];
15.     UIImage *image2 = [UIImage imageWithData:getArray2[3]];

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基本归档操作请参考：http://www.yusian.com/bbs/thread-7979-1-1.html