blocks|key|1690679|text|但是，如果它是可移动的，那么它在安装到PC或移除时可能是不可用的。|type|blockquote|depth|inlineStyleRanges|entityRanges|data|1690680|“安装到PC上”在Android+3.0%2B上不是一个问题，尽管它是在Android1.x/2.x上。在Android+3.0%2B设备上，外部存储很少是可移动的。|unstyled|1690681|那么，对于每个android设备上的所有应用程序，是否总是有任何永久的不可移动的全局存储？|1690682|外部存储就像您将要得到的一样接近。这意味着你可能希望重新考虑你原来的计划。根据应用程序的性质，答案可能是，一个应用程序拥有内部存储的数据，并通过ContentProvider将数据提供给您套件中的其他应用程序。这比外部存储具有更细粒度的安全可能性。|offset|length|style|CODE|1690683|entityMap^0|0|0|0|20|F|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|Q|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|R|8|@$I|S|J|T|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|D|7|U|8|@]|9|@]|A|$]]]|N|$]]

<blockquote>
 But it may possible that if it is removable then it will not be available when mounted to PC or removed.
</blockquote>

"mounted to PC" is not a problem on Android 3.0+, though it is on Android 1.x/2.x. And external storage is rarely removable on Android 3.0+ devices.

<blockquote>
 So, Is there any permanent non removable global storage always available for the all applications on each android device ?
</blockquote>

External storage is as close as you are going to get. This means that you may wish to reconsider your original plan. Depending upon the nature of your app(s), the answer may be that one app has the data on internal storage and is making the data available to other apps in your suite via a <code>ContentProvider</code>. This has more fine-grained security possibilities than does external storage.

blocks|key|647744|text|每一个运行android+4.0%2B的设备都基于媒体传输协议，这意味着如果您将设备挂载到PC上，它仍然可供您的应用程序使用，所以不要太担心它。你一定读过一些关于这方面的过时文章。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|647745|编辑:根据CommonsWare的回答，它甚至是3.0%2B，但是运行Android3.x的设备非常罕见，它们基本上都死了。|style|BOLD|647746|entityMap|0|LINK|mutability|MUTABLE|url|https://en.wikipedia.org/wiki/Media_Transfer_Protocol|1|https://stackoverflow.com/users/115145/commonsware^0|N|6|0|0|0|1O|5|B|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@$A|W|B|X|F|G]]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|H|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]]]

Every device running android 4.0+ is based on <a href="https://en.wikipedia.org/wiki/Media_Transfer_Protocol" rel="nofollow noreferrer">MTP (MEDIA TRANSFER PROTOCOL)</a> which means that if you mount your device to the PC, it will still be available to your application, so don't worry about it too much. You must have read some outdated articles about this.

EDIT: According to the answer of <a href="https://stackoverflow.com/users/115145/commonsware">CommonsWare</a>, it's 3.0+ even, but devices running Android 3.x are so rare they are basically dead.

blocks|key|2989329|text|文件系统存储不会帮助您，因为您的应用程序可以读/写所有其他应用程序也可以读/写/删除，并且您的结果与sdcard部分的情况类似。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2989330|顺便说一句:当连接到PC上时，卸载sdcard部分只在过时的设备上工作。目前的设备只使用MTP协议，允许同时从Android和PC访问。|2989331|如果有几个应用程序协同工作，那么有许多方法可以在彼此之间共享数据：|2989332|在每个应用程序(AndroidManifest.xml)中使用AndroidManifest.xml特性。|ordered-list-item|2989333|制作一个“存储应用程序”，它有一个或多个提供者来访问来自不同应用程序的数据。使用自定义权限保护它们。|2989334|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|P|8|@]|9|@]|A|$]]|$1|I|3|J|5|H|7|Q|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|L|$]]

File system storage will not help you as everywhere your apps can read/write every other app can read/write/delete, too and you end up in a similar situation as on the sdcard section.

BTW: Unmounting the sdcard section when connecting to a PC only works on onld outdated devices. Current devices just use the MTP protocol, which allows access from Android and PC at the same time.

If several apps are working together there a many ways for sharing data among each other:

<ol>
<li>Use the sharedUserId feature in each app (AndroidManifest.xml).</li>
<li>Make one "storing-app" that has one or more Provider for accessing the data from different apps. Secure them using a self-defined permission.</li>
</ol>

blocks|key|647800|text|您可以与FileOutputStream一起使用内部存储，正如在这里的文档中所解释的那样。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|647801|默认情况下，这些文件对您的应用程序是私有的，但是您可以使用Context.MODE_WORLD_WRITEABLE或Context.MODE_WORLD_READABLE来更改它。|647802|但是请注意这一点，因为它会在你的应用程序上造成一些安全问题。也许你可以使用意图或其他方式在你的应用程序之间建立联系。|647803|有关这方面的更多信息，请参考文档。|647804|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/guide/topics/data/data-storage.html#filesInternal|1|http://developer.android.com/reference/android/content/Context.html#MODE_WORLD_WRITEABLE|2|http://developer.android.com/reference/android/content/Context.html#MODE_WORLD_READABLE|3|http://developer.android.com/training/basics/intents/index.html^0|4|G|V|7|0|0|T|S|1M|R|T|S|1|1M|R|2|0|0|E|2|3|0^^$0|@$1|2|3|4|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@$9|12|A|13|1|14]]|E|$]]|$1|F|3|G|5|6|7|15|8|@$9|16|A|17|B|C]|$9|18|A|19|B|C]]|D|@$9|1A|A|1B|1|1C]|$9|1D|A|1E|1|1F]]|E|$]]|$1|H|3|I|5|6|7|1G|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|1H|8|@]|D|@$9|1I|A|1J|1|1K]]|E|$]]|$1|L|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S]]|T|$5|O|P|Q|E|$R|U]]|V|$5|O|P|Q|E|$R|W]]|X|$5|O|P|Q|E|$R|Y]]]]

You can use the internal storage with <code>FileOutputStream</code>, as it's explained <a href="http://developer.android.com/guide/topics/data/data-storage.html#filesInternal" rel="nofollow">here in the documentation</a>. 

By default, those files are private to your app, but you can change that with the <a href="http://developer.android.com/reference/android/content/Context.html#MODE_WORLD_WRITEABLE" rel="nofollow"><code>Context.MODE_WORLD_WRITEABLE</code></a> or <a href="http://developer.android.com/reference/android/content/Context.html#MODE_WORLD_READABLE" rel="nofollow"><code>Context.MODE_WORLD_READABLE</code></a>. 

But please, be careful with that, as it can cause some security problems on your app. Perhaps you could use Intents or other ways to make that link between your apps.

For more information on that, please refer to the <a href="http://developer.android.com/training/basics/intents/index.html" rel="nofollow">documentation</a>.

blocks|key|1690790|text|对于轻量级原语(字符串/ints等)，您可以写入系统设置，这很难被最终用户删除。|type|ordered-list-item|depth|inlineStyleRanges|entityRanges|data|1690791|您可以使用标志Context.MODE_WORLD_READABLE公开应用程序的数据。|1690792|对结构化数据使用ContentProvider。使用权限和权限，以便只允许应用程序读取/写入内容提供程序。|1690793|外部存储，但正如你说的，是不可靠的。上面的数据是公开的，对所有应用程序都是可见的，对最终用户也是如此。这些数据很容易被用户和一些清洁应用程序删除。|1690794|unstyled|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|M|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|N|8|@]|9|@]|A|$]]|$1|H|3|-4|5|I|7|O|8|@]|9|@]|A|$]]]|J|$]]

<ol>
<li>For lightweight primitives (strings/ints, etc), you can write to system settings, which is hard to remove by end users.</li>
<li>You can expose app's data by using flag Context.MODE_WORLD_READABLE.</li>
<li>Use ContentProvider for structed data. Use the authorities and permissions so that only your apps are allowed to read/write to content provider.</li>
<li>External storage, but as you said, is not reliable. The data on it are public and visible to all apps and also to end user. The data are easily deleted by users and some cleaning app.</li>
</ol>

I need to store the data on the android device and want to access this data from different applications(Through the services in background). 

We can achieve this using the External storage. But it may possible that if it is removable then it will not be available when mounted to PC or removed. So, Is there any permanent non removable global storage always available for the all applications on each android device ? If so how I can access it.

Please guide me. Thanks in advance.

Is there any permanent non removable global storage available for the applications on each android device ?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我需要将数据存储在android设备上，并希望从不同的应用程序(通过后台的服务)访问这些数据。我们可以使用外部存储来实现这一点。但是，如果它是可移动的，那么它在安装到PC或移除时可能是不可用的。那么，对于每个android设备上的所有应用程序，是否总是有任何永久的不可移动的全局存储？如果是这样的话，我怎么能访问它。请引...

问对于每个android设备上的应用程序，是否有任何永久的不可移动的全局存储？
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问对于每个android设备上的应用程序，是否有任何永久的不可移动的全局存储？EN