保存哈希映射到共享preferences [英] Saving a hash map into Shared Preferences

问题描述

我如何保存哈希映射到的共享preferences 在Android的？

How I can save a Hash Map into the Shared Preferences in Android?

推荐答案

我不建议编写复杂的对象到共享preference。相反，我会用的ObjectOutputStream 将其写入到内存中。

I would not recommend writing complex objects into SharedPreference. Instead I would use ObjectOutputStream to write it to the internal memory.

File file = new File(getDir("data", MODE_PRIVATE), "map");    
ObjectOutputStream outputStream = new ObjectOutputStream(new FileOutputStream(file));
outputStream.writeObject(map);
outputStream.flush();
outputStream.close();

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