什么时候encodeWithCoder被调用？ [英] When does encodeWithCoder get called?

问题描述

这将保存数组（我认为）。

This will save an array (I think).

- (void)encodeWithCoder:(NSCoder *)encoder {
    [encoder encodeObject:myArray forKey:@"myArray"];
}

当我要保存数组时，我必须直接调用此方法我必须做别的事吗？

Do I have to directly call this method when I want to save an array or do I have to do something else?

推荐答案

你不直接调用这个方法。如果需要序列化该对象，它由 NSCoder 子类调用。如果要对对象图进行编码，请使用 archivedDataWithRootObject：或 archiveRootObject：toFile： c> NSKeyedArchiver 。这将调用对象的 encodeWithCoder：方法。另请注意，数组中的每个对象都必须实现 NSCoding 协议。

You don’t call this method directly. It’s called by a NSCoder subclass if it needs to serialize that object. If you want to encode an object graph use the class methods archivedDataWithRootObject: or archiveRootObject:toFile: of NSKeyedArchiver. This in turn will call the encodeWithCoder: method of your objects. Also note that every object in your array has to implement the NSCoding protocol.

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