Objective-C的集合類序列化到文件中或者從文件中反序列化其實很簡單，請看下面的示例代碼：

NSArray?*array =?[NSArray?arrayWithObjects:

@"Hefeweizen", @"IPA", @"Pilsner", @"Stout",?nil];

NSDictionary?*dictionary =?[NSDictionary?dictionaryWithObjectsAndKeys:

array, @"array", @"Stout", @"dark", @"Hefeweizen", @"wheat", @"IPA",

@"hoppy",?nil];

// 得到documents directory的路徑

NSArray?*paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,

NSUserDomainMask, YES);

if?([paths count]?>?0)

{

// Array的保存路徑

NSString??*arrayPath =?[[paths objectAtIndex:0]

stringByAppendingPathComponent:@"array.out"];

// dictionary的保存路徑

NSString??*dictPath =?[[paths objectAtIndex:0]

stringByAppendingPathComponent:@"dict.out"];

// 保存array

[array writeToFile:arrayPath atomically:YES];

// 保存dictionary

[dictionary writeToFile:dictPath atomically:YES];

// 從文件中讀取回來

NSArray?*arrayFromFile =?[NSArray?arrayWithContentsOfFile:arrayPath];

NSDictionary?*dictFromFile =?[NSDictionary?dictionaryWithContentsOfFile:dictPath];

for?(NSString?*element in arrayFromFile)

NSLog(@"Beer: %@", element);

for?(NSString?*key in dictFromFile)

NSLog(@"%@ Style: %@", key,?[dictionary valueForKey:key]);

}

輸出如下：

http://blog.prosight.me/index.php/2010/02/582

轉載于:https://www.cnblogs.com/1208/archive/2012/07/05/2578210.html

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